US20090084791A1 - Closure Having a Segmented Locking Ring - Google Patents
Closure Having a Segmented Locking Ring Download PDFInfo
- Publication number
- US20090084791A1 US20090084791A1 US12/021,886 US2188608A US2009084791A1 US 20090084791 A1 US20090084791 A1 US 20090084791A1 US 2188608 A US2188608 A US 2188608A US 2009084791 A1 US2009084791 A1 US 2009084791A1
- Authority
- US
- United States
- Prior art keywords
- locking ring
- connecting ring
- arcuate
- pressure retaining
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/02—Detachable closure members; Means for tightening closures
- F16J13/08—Detachable closure members; Means for tightening closures attached by one or more members actuated to project behind a part or parts of the frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/10—Manholes; Inspection openings; Covers therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/02—Detachable closure members; Means for tightening closures
- F16J13/10—Detachable closure members; Means for tightening closures attached by means of a divided ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/16—Pivoted closures
- F16J13/20—Pivoted closures mounted by mobile fastening on swinging arms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/24—Covers or similar closure members for pressure vessels in general with safety devices, e.g. to prevent opening prior to pressure release
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/136—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/20—Clamps
- Y10T292/205—Ring
- Y10T292/212—With expanding or contracting means
Abstract
A pressure closure having a round door with an arcuate locking ring having a plurality of arcuate locking ring segments connected by at least one connecting ring movably retained therewith proximate an outer circumference of an outer surface of the door. The locking ring segments may have at least one cavity extending through the arcuate length thereof. An arcuate connecting ring extends through each cavity in the locking ring segments retaining them together to form the locking ring. Alternatively, the connecting ring connects the locking ring segments together with connecting ring retaining links cooperating with the connecting ring and locking ring segments. Optionally, the cross-sectional configuration of the connecting ring is rounded. Advantageously, the optional at least one cavity extending through the locking ring segments has an axial opening extending the arcuate length of each locking ring segment. The axial opening may have a width less than or greater than the diameter of the locking ring extending therethrough. Optionally, the locking ring segments may have protuberances and fitting recesses on adjacent circumferential ends. Furthermore, connecting ring retaining links may be placed between a plurality of adjacent locking ring segments securing the connecting ring into cavities in the locking ring segments or securing the connecting ring proximate solid locking ring segments.
Description
- This application under 35 USC § 119(e), claims priority to, and benefit from, U.S. Provisional Application Ser. No. 60/976,997, filed on Oct. 2, 2007, entitled “Closure Having a Segmented Locking Ring,” which is currently pending, naming the above-listed individual as the sole inventor.
- 1. Field of the Invention
- The present invention relates generally to closures for pressure vessels or pipes and more specifically to locking members for pressure closures.
- 2. Description of the Related Art
- Closures for pressure vessels and pipes typically comprise a round door adapted to fit an aperture in the body of the vessel, pipe, or hub extending therefrom. The aperture has an inner circumferential groove for supporting a portion of a locking member. The doors have locking member(s), or portions thereof, proximate a circumferential portion of an outer surface of the door wherein the locking member is engaged to cooperate with the groove about the aperture after the door is closed and seated in the aperture. The locking members of the prior art are typically comprised of a plurality of arms or blocks slidably mounted adjacent the outer periphery of the door and movable from an unlocked position to a locked position. In an unlocked position, the locking member(s) is within the periphery of the outer surface of the door. In a locked position, a part of the locking member(s) protrudes beyond the periphery for engagement with the circumferential groove in the aperture.
- Known configurations of locking members include arms or blocks that rotate or extend outwardly, arcuate or “C” shaped rings, slotted as well as segmented, that expand to a locking configuration and contract to an unlocking configuration. Locking member(s) of the prior art have load bearing surfaces that engage an external surface of the annular groove in the hub or vessel and a load bearing surface that engages a portion of the external surface of the door. When the internal surface of the door is subjected to pressure, the resultant force is transferred from the external surface of the door to the external surface of the annular groove about the aperture through the locking member(s) wherein an internal load bearing surface cooperates with the external surface of the door and an external load bearing surface cooperates with the external load bearing surface of the annular groove of the hub.
- A pressure or vacuum closure having a round door with an arcuate locking ring having a plurality of arcuate locking ring segments is provided. The plurality of locking ring segments are connected, end to end, by at least one connecting ring forming the locking ring having an arcuate “C” shaped configuration. The locking ring is movably retained proximate an outer circumference of an external surface of the door with retaining clips. The locking ring is suitable to expand and contract wherein an outer circumferential portion of the locking ring is suitable to engage a groove within an inner circumferential surface of an opening when the locking ring is in an expanded orientation and is suitable to contract to a circumference less than the inner circumference of the opening. When the locking ring is in an expanded locked position, an outer circumferential portion of the locking ring extends beyond the circumference of the door and is received into the groove within the inner annular surface of the pipe, container, vessel, or hub extending therefrom.
- The locking ring segments may have at least one cavity extending through the arcuate length thereof with a portion of the connecting ring extending therethrough, retaining the locking ring segments together to form the locking ring. Each cavity has a greater cross-sectional area than the cross-sectional area of the connecting ring extending therethrough. Optionally, the cross-sectional configuration of the connecting ring and cavities through which it extends is rounded. At least one cavity(s) extending through the locking ring segments may have an axial opening extending the arcuate length of each locking ring segment. Axial, as used herein, refers to an orientation with respect to the longitudinal axis of the hub when the door is in a closed position within the hub. The axial opening may have a width less than or greater than the diameter of the locking ring extending therethrough. Optionally, the locking ring segments have protuberances and fitting recesses on adjacent circumferential ends. Furthermore, connecting ring retaining links may be placed between a plurality of adjacent locking ring segments securing the connecting ring(s) into the cavities.
- Alternatively, the arcuate locking ring has a plurality of arcuate locking ring segments with a connecting ring retaining link fastened between each arcuate segment and each end face of the arcuate locking ring. In this embodiment, each connecting ring retaining link has a portion extending radially inward from an inner radial surface of the arcuate locking ring. Radial, as used herein, refers to an orientation with respect to the radius of the hub when the door is in a closed position within the hub. The inward extending portion has an aperture therein for receiving the connecting ring. The connecting ring arcuately extends through each aperture in the connecting ring retaining links, thus retaining each locking ring segment together to form the arcuate locking ring.
- In order that the invention may be better understood, embodiments of the closure in accordance with the present invention will now be described by way of examples. These embodiments are not to limit the scope of the present invention as other embodiments of the closure of the present invention will become apparent to one having ordinary skill in the art upon reading the instant description. Examples of the present invention are shown in figures wherein:
-
FIG. 1 is a perspective view of an embodiment of a closure in a closed representation showing a door within a hub and components thereof on an outer surface of the door. -
FIG. 2A is a frontal view of the closure ofFIG. 1 in a closed representation showing the orientation of a locking ring and actuator assembly with respect to a door in a closed position within a hub. -
FIG. 2B is a cross-sectional view of the closure ofFIG. 2A showing the orientation of the locking ring segment, connecting ring, hinge assembly, safety system assembly, and sealing gasket with respect to a door and a hub. -
FIG. 3A is a side view of the closure ofFIG. 1 in an open representation showing the orientation of a locking ring and actuator assembly with respect to a door and a hub. -
FIG. 3B is a cross-sectional view of the closure ofFIG. 3A showing the orientation of the locking ring in a retracted, open orientation about a door. -
FIG. 4 is a cross-sectional cut-away view of the closure ofFIG. 2B showing the cooperation of the locking ring segment and a sealing gasket with the hub. -
FIG. 5 is a frontal view of the locking ring ofFIG. 1 showing locking ring segments of an expanded locking ring and an expansion gap between end faces of the locking ring. -
FIGS. 6A-6L are cross-sectional views of several embodiments of a locking ring showing configurations of locking ring segments of the locking ring having cavities cooperating with at least one connecting ring and the cooperation therebetween. -
FIGS. 6N and 6M are cut-away views of several embodiments of a locking ring showing configurations of locking ring segments of the locking ring, connecting rings, connecting ring retaining links, and cooperation therebetween. -
FIG. 7 is a perspective view of a locking ring showing locking ring segments cooperating with a connecting ring about an inner radial surface thereof with a plurality of connecting ring retaining links. -
FIGS. 7A and 7B are top and side views, respectively, of the locking ring ofFIG. 7 showing the engagement and cooperation of the connecting ring retaining links and fasteners with the locking ring segments. -
FIG. 7C is a cross-sectional view of a locking ring segment and connecting ring of the locking ring ofFIG. 7 showing the orientation between the connecting ring and locking ring. -
FIG. 7D is a front view of a connecting ring retaining link ofFIG. 7 . -
FIGS. 8A through 8F show embodiments of sealing gaskets that may be seated within a circumferential groove about an inner surface of a door. -
FIG. 1 is a perspective view ofclosure 100 in a closed representation.Closure 100 comprisesdoor 104 hingedly attached to the outermost annular surface ofhub 102 withhinge assembly 108 and seated within an inner annular surface ofhub 102. In this closed orientation,segmented locking ring 106 is expanded having a portion visible about an external surface ofdoor 104 and a portion within groove 116 (shown inFIG. 2 b) in an inner annular surface ofhub 102. Also shown here is lockingring actuator assembly 110 comprising cranklever 112 rotatingly engaging crankspring 114 and lockingring 106 via weldment. In this locked position, cranklever 112 has been rotated clockwise from an unlocked position wherein crankspring 114 applies a separating force proximate one end of lockingring 106 and cranklever 112 applies a separating force proximate the other end of lockingring 106 expandinglocking ring 106. Between the end faces 134 and 136 of lockingring 106 is lockingsegment 115 supported therein with lockingsegment assembly 113. Lockingsegment 115 has a portion in the innerannular groove 116 inhub 102 between the end faces 134 and 136 of lockingring 106 which prevents the contraction of lockingring 106 when in an expanded locked position.Clips 111 moveablyhold locking ring 106 proximate the outer circumferential edge of the outer surface ofdoor 104 allowing lockingring 106 to expand into and contract out ofgroove 116 inhub 102. -
FIGS. 2 a and 2 b showdoor 104 in a closed orientation withinhub 102.Door 104 has outwardly tapered outerload bearing surface 140 proximate the inner annular surface ofhub 102 which cooperates with axially inward facing load bearing surface 122 (shown inFIG. 4 ) of lockingring 106.Hub 102 has innerannular groove 116 proximate the outer circumferential surface ofdoor 104. The axially inward facing load bearing surface of innerannular groove 116 cooperates with axially outward facing load bearing surface 123 (shown inFIG. 4 ) of lockingring 106. Lockingring 106 is shown as a plurality of lockingring segments 118 retained together with connectingring 120. Lockingring 106 comprising a plurality of lockingring segments 118 and connectingring 120 may have a plurality of configurations forming anexpandable locking ring 106 with axially inward and outward facingload bearing surfaces 122 and 123 (shown inFIG. 4 ). - Also shown in
FIGS. 2 a and 2 b is safetylocking segment assembly 113 havinglocking segment 115. Lockingsegment assembly 113 comprisespressure warning screw 126 having threadedend 130 that cooperates with threadedaperture 132 indoor 104.Aperture 132 is in flow communication with the wetted internal portion ofhub 102 and ambient air whenpressure warning screw 126 is removed. About an outer annular surface ofpressure warning screw 126 is “L” shaped lockingsegment connecting bracket 124 which has an aperture in one leg about an outer portion ofpressure warning screw 126.Pins 128 extend through apertures inpressure warning screw 126 and cooperate within each side ofbracket 124 so that whenpressure warning screw 126 is removed, the assembly remains inseparable. Whenpressure warning screw 126 is threaded intoaperture 132, as shown, lockingsegment connecting bracket 124 which is adjacent or connected to an inner radial surface of lockingsegment 115 constrains lockingsegment 115 between end faces 134 and 136 of lockingring 106. In this locked position, lockingring 106 is prohibited from contracting and keeping a portion of lockingring 106 withingroove 116. Looseningpressure warning screw 126releases locking segment 115 so that it may be removed fromhub 102. When in the locked position, as shown here, lockingsegment 115 cooperates with each end, 134 and 136, of lockingring 106 retaining it in an expanded locked orientation within innerannular groove 116. Advantageously, at least one of the threads within the inner annular surface ofaperture 132 or on the outer annular surface of threadedend 130 ofpressure warning screw 126 has a groove therein or other configuration allowing an amount of pressurized gasses withinhub 102 to escape making a whistling sound or other warning sound aboutgasket 139 whenpressure warning screw 126 is loosened. - Sealing
gasket 138 is shown within a circumferential groove about an inner surface ofdoor 104 proximate an outer circumference. Sealinggasket 138 may be of any configuration as is known in the art which imparts a seal between an inner surface ofdoor 104 andhub 102. For example, seal 138 may be an o-ring seal, an energized seal comprised of a single piece or a plurality of pieces including an anti-extrusion ring thereabout, or have other configurations as is known in the art. For example, seal 138 may be fluid or spring energized.Seal 138 may be extruded or molded and may have an anti-extrusion ring about an outer circumferential surface. -
FIGS. 3 a and 3 b showdoor 104 in an open orientation hingedly attached tohub 102 withhinge assembly 108.Closure 100 has lockingsegment assembly 113 removed therefrom wherein a gap is formed between eachend face ring 106. End faces 134 and 136 are then drawn together in the gap created with the removal of locking segment 115 (shown inFIG. 2A ).Door 104 has lockingring 106 contracted to an inner portion of outwardly tapered outerload bearing surface 140 and removed fromgroove 116. -
FIG. 4 shows the cooperation betweensegmented locking ring 106 with a load bearing portion inannular groove 116 in the inner annular surface ofhub 102. Lockingring segment 118 has axially inward and outward facingload bearing surfaces load bearing surface 122 cooperates with outwardly tapered outerload bearing surface 140 ofdoor 104. Outward facingload bearing surface 123 cooperates with an axially inward facing load bearing surface of innerannular groove 116. This configuration transfers the pressure applied to the inner surface ofdoor 104 to lockingring 106 and innerannular groove 116. -
FIG. 5 shows a front view ofsegmented locking ring 106 having connectingring 120. Lockingring 106 has a plurality of lockingring segments 118 retained together with connectingring 120 forming arcuate or “C” shaped segmentedlocking ring 106. Lockingring 106 has end faces 134 and 136 movable towards and away from each other allowing radial expansion and contraction of thelocking ring 106. Connectingring 120 resides within an arcuate cavity within each lockingring segment 118 and is comprised of a flexible material, such as spring steel, suitable for expanding andcontracting locking ring 106. -
FIGS. 6A-6L show several embodiments of a locking ring and associated connecting ring(s).FIG. 6A shows lockingring 106 having connectingring 120 withinarcuate cavity 109. Connectingring 120 is comprised of a flexible material having a round cross-section suitable for retaininglocking ring segments 118 together and suitable for enablinglocking ring 106 to radially expand and contract into an open and closed orientation. In a closed orientation, lockingring 106 is expanded wherein an outer circumferential portion is suitable to engage a groove within an inner circumferential surface of an opening. In an open orientation, lockingring 106 is contracted to a circumference less than the inner circumference of the outer portion of the opening.Arcuate cavity 109 has an axially outward opening in lockingring 106 and a larger diameter than that of connectingring 120 forming a space between an inner surface of lockingring segment 118 and connectingring 120 providing room for connectingring 120 to radially expand and contract without placing excessive force on an internal surface of lockingring segment 118.Arcuate cavity 109 shows an axially outward opening in lockingring 106. This axial opening is optional as it is formed during an advantageous method of removing material from an internal portion of lockingring segment 118 formingarcuate cavity 109 and is not critical to the present invention as other methods of manufacture known in the art may producearcuate cavity 109 withinring segment 118 without an opening in an outer surface ofring segment 118. - Locking
ring 106 has axially inward and outward facingload bearing surfaces load bearing surface 140 ofhub 102 and a load bearing surface withingroove 116 inhub 102. Load bearing surfaces 122 and 123 are shown as being substantially parallel and form an angle α with respect to the central axis of lockingring 106. Advantageously, angle α is between about 85° and 0° and more advantageously at least 30°. Even though in the embodiments shown, load bearingsurfaces load bearing surfaces load bearing surfaces ring 106. This wedge configuration causes an expanding force to be placed on lockingring 106 when an outward force is exerted byload bearing surface 140 ofdoor 104 forcingload bearing surface 123 against the load bearing surface withingroove 116 inhub 102. -
FIG. 6B shows lockingring 206 having connectingring 220 withinarcuate cavity 209 in lockingring segment 218. Connectingring 220 has a horizontal oval shaped cross-section suitable for retaininglocking ring segments 218 together and suitable for enablinglocking ring 206 to radially expand and contract into an open and closed orientation.Arcuate cavity 209 also has a horizontal oval configuration and has an axially outward opening in lockingring 206.Arcuate cavity 209 has a larger diameter than that of connectingring 220 forming a space between an inner surface of lockingring segment 218 and connectingring 220 providing room for connectingring 220 to radially expand and contract without placing excessive force on an internal surface of lockingring segment 218. Lockingring 206 has axially inward and outward facingload bearing surfaces -
FIG. 6C shows lockingring 306 having connectingring 120 withinarcuate cavity 309 in lockingring segment 318. Connectingring 120 has a round cross-section suitable for retaininglocking ring segments 318 together and suitable for enablinglocking ring 306 to radially expand and contract into an open and closed orientation.Arcuate cavity 309 also has a round configuration and has an axially inward opening in lockingring 306.Arcuate cavity 309 has a larger diameter than that of connectingring 120 forming a space between an inner surface of lockingring segment 318 and connectingring 120 providing room for connectingring 120 to radially expand and contract without placing excessive force on an internal surface of lockingring segment 318. Lockingring 306 has axially inward and outward facingload bearing surfaces -
FIG. 6D shows lockingring 406 having connectingring 420 withinarcuate cavity 409 in lockingring segment 418. Connectingring 420 has a vertical oval shape cross-section suitable for retaininglocking ring segments 418 together and suitable for enablinglocking ring 406 to radially expand and contract into an open and closed orientation.Arcuate cavity 409 also has a vertical oval configuration and has an axially outward opening in lockingring 406.Arcuate cavity 409 has a larger diameter than that of connectingring 420 forming a space between an inner surface of lockingring segment 418 and connectingring 420. -
FIG. 6E shows lockingring 506 having connectingrings 120 withinarcuate cavities ring segment 518. Connectingrings 120 have a round cross-section for retaininglocking ring segments 518 together and are suitable for enablinglocking ring 506 to radially expand and contract into an open and closed orientation.Arcuate cavity 109 has a round configuration and has an axially outward opening in lockingring 506.Arcuate cavity 509 has a round configuration and has an axially inward opening in lockingring 506.Arcuate cavities rings 120 forming a space between an inner surface of lockingring segment 518 and connectingrings 120. -
FIG. 6F shows lockingring 606 having connectingring 620 withinarcuate cavity 609 in lockingring segment 618. Connectingring 620 has a round cross-section suitable for retaininglocking ring segments 618 together and suitable for enablinglocking ring 606 to radially expand and contract into an open and closed orientation.Arcuate cavity 609 also has a round configuration and has a radially inward opening in lockingring 606.Arcuate cavity 609 has a larger diameter than that of connectingring 620 forming a space between an inner surface of lockingring segment 618 and connectingring 620. -
FIG. 6G shows lockingring 706 having connectingring 720 withinarcuate cavity 709 in lockingring segment 718. Connectingring 720 has a round cross-section suitable for retaininglocking ring segments 718 together and suitable for enablinglocking ring 706 to radially expand and contract into an open and closed orientation.Arcuate cavity 709 also has a round configuration and has a radially outward opening in lockingring 706.Arcuate cavity 709 has a larger diameter than that of connectingring 720 forming a space between an inner surface of lockingring segment 718 and connectingring 720. -
FIG. 6H shows lockingring 806 having connectingrings arcuate cavities ring segment 818. Connectingrings locking ring segments 818 together and are suitable for enablinglocking ring 806 to radially expand and contract into an open and closed orientation.Arcuate cavity 809 has a round configuration and has a radially outward opening in lockingring 806.Arcuate cavity 811 has a round configuration and has a radially inward opening in lockingring 806.Arcuate cavities rings ring segment 518 and connectingrings -
FIG. 6I shows lockingring 906 having connectingring 920 withinarcuate cavity 909 in lockingring segment 918. Connectingring 920 has a rectangular cross-section suitable for retaininglocking ring segments 918 together and suitable for enablinglocking ring 906 to radially expand and contract into an open and closed orientation.Arcuate cavity 909 also has a rectangular configuration and has a radially outward opening in lockingring 906.Arcuate cavity 909 has a larger cross-sectional area than that of connectingring 920 forming a space between an inner surface of lockingring segment 918 and connectingring 920. -
FIG. 6J shows lockingring 1006 having connectingring 1020 withinarcuate cavity 1009 in lockingring segment 1018. Connectingring 1020 has a rectangular cross-section suitable for retaininglocking ring segments 1018 together and suitable for enablinglocking ring 1006 to radially expand and contract into an open and closed orientation.Arcuate cavity 1009 also has a rectangular configuration and has an axially inward opening in lockingring 1006.Arcuate cavity 1009 has a larger cross-sectional area than that of connectingring 1020 forming a space between an inner surface of lockingring segment 1018 and connectingring 1020. -
FIG. 6K shows lockingring 1106 having connectingring 1120 withinarcuate cavity 1109 in lockingring segment 1118. Connectingring 1120 has a rounded cross-section with a hollow center suitable for retaininglocking ring segments 1118 together and suitable for enablinglocking ring 1106 to radially expand and contract into an open and closed orientation.Arcuate cavity 1109 also has a round configuration and has an axially outward opening in lockingring 1106.Arcuate cavity 1109 has a larger diameter than that of connectingring 1120 forming a space between an inner surface of lockingring segment 1118 and connectingring 1120. Lockingring segment 1118 has a substantially rectangular configuration withload bearing surfaces -
FIG. 6L shows lockingring 1206 having connectingrings arcuate cavities ring segment 1218. Connectingrings locking ring segments 1218 together and are suitable for enablinglocking ring 1206 to radially expand and contract into an open and closed orientation.Arcuate cavity 1209 has a round configuration and has an axially outward opening in lockingring 1206.Arcuate cavity 1211 has a round configuration and has an axially inward opening in lockingring 1206.Arcuate cavities rings ring segment 1218 and connectingrings -
FIG. 6M shows lockingring 1306 having connectingring 120 withinarcuate cavity 1309. Connectingring 120 is comprised of a flexible material having a round cross-section suitable for retaininglocking ring segments 1318 together and suitable for enablinglocking ring 1306 to radially expand and contract into an open and closed orientation. It is to be understood that connectingring 120 may have any cross-sectional configuration such as oval, rectangular, or even triangular. In a closed orientation, lockingring 1306 is expanded wherein an outer circumferential portion is suitable to engage a groove within an inner circumferential surface of an opening. In an open orientation, lockingring 1306 is contracted to a circumference less than the inner circumference of the outer portion of the opening exterior of the groove.Arcuate cavity 1309 has an axially outward opening in lockingring 1306 and a larger diameter than that of connectingring 120 forming a space between an inner surface of lockingring segment 1318 and connectingring 120 providing room for connectingring 120 to radially expand and contract without placing excessive force on an internal surface of lockingring segment 1318.Arcuate cavity 1309 has an axially outward opening in lockingring 1306 with a width proximate the diameter ofcavity 1309. This axial opening configuration permits more cost effective tooling of lockingring segment 1318 in makingcavity 1309 at specified tolerances.Protuberance 1321 extends from one circumferential end of lockingring segment 1318 and engages a like shaped recess on the other circumferential end of an adjacent locking ring segment 1318 (not shown). Connectingring retaining link 126 hasaperture 128 b suitable to receiveprotuberance 1321 andaperture 128 a suitable to receive connectingring 120. A connectingring retaining link 126 is placed between a plurality of lockingring segments 1318 in lockingring 1306 about lockingring 120 andprotuberances 1321retaining connecting ring 120 withincavity 1309. -
FIG. 6N shows lockingring 1406 having connectingrings arcuate cavities ring segment 1418. Connectingrings locking ring segments 1418 together and are suitable for enablinglocking ring 1406 to radially expand and contract into an open and closed orientation.Arcuate cavities ring 1406.Arcuate cavities rings ring segment 1418 and connectingrings Arcuate cavities ring 1406 with a width proximate the diameter ofcavities ring segment 1418 in makingcavities ring retaining link 126 hasaperture 128 b suitable to receive connectingring 1222 andaperture 128 a suitable to receive connectingring 1220. A connectingring retaining link 126 is placed between a plurality of adjacentlocking ring segment 1418 in lockingring 1406 about lockingrings retaining connecting rings cavities ring retaining link 126 is placed between each adjacentlocking ring segment 1418. It is to be understood thatapertures ring retaining link 126 and still be within the scope of the present invention. -
FIG. 7 shows a perspective view ofsegmented locking ring 1506 having connectingring 1520. Lockingring 1506 has a plurality of solidlocking ring segments 1518 retained together with connectingring 1520 forming arcuate or “C” shaped segmentedlocking ring 1506. Connectingring 1520 is comprised of a flexible material, such as spring steel, suitable for expanding andcontracting locking ring 1506. Lockingring 1506 is shown in an expanded closed orientation having end faces 1534 and 1536 gap spaced.Fasteners 1521 hold connectingring retaining links 1526 between each lockingring segment 1518 and to eachend face links 1526 haveaperture 1528 a suitable to receive connectingring 1520. -
FIGS. 7A and 7B are top and side views, respectively, showingfasteners 1521 fastened to onelocking ring segment 1518 in acavity 1525 and having a head extending into acavity 1519 in an adjacentlocking ring segment 1518.Fasteners 1521 extend throughapertures 1528 b, shown inFIG. 7D , fastening connectingring retaining links 1526 between each lockingring segment 1518 and to eachend face fastener 1521, between each lockingring segment 1518, resides within acavity 1519 within each lockingring segment 1518.Cavity 1519 has a larger diameter than the head offastener 1521 so that when lockingring segments 1518 flex or contract in a radial direction;fasteners 1521 do not damage lockingring segments 1518. -
FIG. 7C is a cross-sectional view of a solidlocking ring segment 1518 and connectingring 1520 showing the orientation therebetween. Connectingring 1520 has a round cross-sectional configuration and is spaced from the inner circumferential surface of lockingring segment 1518 so that connectingring 1520 does not interfere with lockingring segments 1518 when lockingring 1506 is in an expanded closing configuration. Lockingring segments 1518 have a rectangular configuration withload bearing surfaces -
FIG. 7D shows a front view of a connectingring retaining link 1526. Connectingring retaining link 1526 has a rectangular lower portion for engaging ends of lockingring segments 1518 and being fastened thereto.Apertures 1528 b are suitable for extendingfasteners 1521 therethrough. The top portion of connectingring retaining link 1526 hasaperture 1528 a suitable for receiving connectingring 1520. -
FIGS. 8A through 8F show alternative embodiments of sealing gaskets.Sealing gasket 1638 shown inFIG. 8A is withincircumferential groove 1639 about an inner surface ofdoor 1604 proximate an outer circumference thereof. Lockingring segment 1518 and connectingring 1520 are shown cooperating with an outer surface ofdoor 1604.Sealing gasket 1638 imparts a seal between the inner surface ofdoor 1604 and a hub. In this embodiment,seal 1638 is a fluid energized seal having a smaller inner radius thangroove 1639. The outer radius ofseal 1638 is proximate the outer radius ofgroove 1639 so thatseal 1638 is retained withingroove 1639 whendoor 1604 is opened.Seal 1640, shown inFIG. 8B , has an inner and outer radius proximate the inner and outer radius ofgroove 1639. Both seals, 1638 and 1640, are fluid energized seals having a rectangular outer portion for seating ingroove 1639 and an upper portion with a radially inward facing groove. The radially inward facing groove provides the fluid energized characteristic to the seals. -
FIGS. 8C and 8D show fluid energized seals having an anti-extrusion ring.Seal 1642 has a portion for seating into a circumferential groove about an inner surface of a door.Sealing gasket 1642 imparts a seal between the inner surface of a door and a hub. In these embodiments,seals 1642 are fluid energized seals having an upper portion with radially inward facinggroove 1662. Radially inward facinggroove 1662 provides the fluid energizedcharacteristic seal 1642 wherein pressure acting ongroove 1662 forces seal 1642 against a door and a hub in cooperation therewith.Seal 1642 is shown havinganti-extrusion ring 1650, inFIG. 8C , about an outer circumferentialsurface preventing seal 1642 from being extruded between the door and hub when pressure is applied atgroove 1662.Anti-extrusion 1650 is a hollow ring which may be comprised of polymeric or metallic materials. For example,anti-extrusion ring 1650 may have nylon or polytetrafluoroethylene or may be comprised of a metallic spring.Seal 1642 is shown havinganti-extrusion ring 1652, inFIG. 8D , about an outer circumferential surface thereof.Anti-extrusion ring 1652 has a solid ring like structure and may have a molded or extruded polymeric material or may have a metallic material. Anti-extrusion rings 1650 and 1652 may be coextruded or molded withseal 1642 or they may be structurally separate from molded or extrudedseal 1642. -
FIG. 8E shows fluid energizedseal 1644 havinganti-extrusion ring 1654.Anti-extrusion ring 1654 may be structurally separate fromseal 1644 oranti-extrusion ring 1654 may coextruded or molded withseal 1644.Seal 1644 has a rectangular portion for seating into a circumferential groove about an inner surface of a door. Radially inward facinggroove 1664 provides the fluid energizedcharacteristic seal 1644 wherein pressure acting ongroove 1664 forces seal 1644 against a door, a hub, andanti-extrusion ring 1654.Anti-extrusion ring 1654 has a band like configuration where a portion ofanti-extrusion ring 1654 fits into the circumferential groove about the door.Anti-extrusion ring 1654 may be comprised of polymeric or metallic materials. -
FIG. 8F shows spring energizedseals 1646 and 1648 respectively.Spring 1656 is a cantilever spring which serves to energizeseal 1646 by providing an expanding force to a portion thereof as shown.Cantilever spring 1656 may be comprised of a metallic material or polymeric material such as polytetrafluoroethylene. The spring serves to energize seal by providing an expanding force to a portion thereof as shown and may be a helical wound metallic spring or have an annular ring configuration. Advantageously, an annular ring configured spring is comprised of an elastic polymeric material.
Claims (37)
1. A pressure retaining closure for an opening in a pipe, vessel, or hub extending therefrom comprising:
a round door having an inner and outer surface;
an arcuate locking ring having a plurality of arcuate locking ring segments and at least one connecting ring movably retained therewith proximate an outer circumference of said outer surface of said door;
at least one cavity having a rounded cross-section extending through the arcuate length of each of said plurality of arcuate locking ring segments;
said at least one connecting ring having a round cross-section and arcuately extending through each of said cavities of said locking ring segments retaining each of said locking ring segments together forming said locking ring;
said at least one cavity having a greater cross-sectional area than the cross-sectional area of said connecting ring extending therethrough; and
said arcuate locking ring being suitable to expand and contract wherein an outer circumferential portion of said locking ring is suitable to engage a groove within an inner circumferential surface of said opening when said locking ring is in an expanded orientation and is suitable to contract to a circumference less than the inner circumference of said opening.
2. The pressure retaining closure of claim 1 wherein said cross-section of said at least one connecting ring and said cross-sectional area of said at least one cavity is round.
3. The pressure retaining closure of claim 1 wherein said cross-section of said at least one connecting ring and said cross-sectional area of said at least one cavity is oval.
4. The pressure retaining closure of claim 1 wherein said connecting ring is solid.
5. The pressure retaining closure of claim 1 wherein said connecting ring is hollow.
6. The pressure retaining closure of claim 1 wherein each of said at least one cavity in each of said locking ring segments has an arcuately extending opening therein.
7. The pressure retaining closure of claim 6 wherein each of said arcuately extending openings are in an axial surface of each of said locking ring segments.
8. The pressure retaining closure of claim 7 wherein at least one of said arcuately extending openings is in an axially inward facing surface of each of said locking ring segments, said axially inward facing surface being proximate said outer surface of said door.
9. The pressure retaining closure of claim 7 wherein at least one of said arcuately extending openings is in an axially outward surface of each of said locking ring segments, said axially outward surface facing away from said outer surface of said door.
10. The pressure retaining closure of claim 1 wherein each of said at least one cavities has an arcuately extending axially outward opening with a width less than the diameter of said connecting ring therein.
11. The pressure retaining closure of claim 1 having at least two cavities in each of said plurality of locking ring segments and at least two connecting rings.
12. The pressure retaining closure of claim 11 wherein each of said cavities has an arcuately extending axially outward opening with a width greater than the diameter of said connecting ring therein and a connecting ring retaining link between at least two of said arcuate locking ring segments, said connecting ring retaining link having at least one aperture receiving each of said connecting rings.
13. The pressure retaining closure of claim 1 wherein said locking ring has an inner and outer load bearing surface, said inner and said outer load bearing surfaces being substantially frustoconical.
14. The pressure retaining closure of claim 1 wherein each of said cavities has an arcuately extending axially outward opening with a width proximate the diameter of said connecting ring therein, each of said locking ring segments having at least one adjacent circumferential end with either a protuberance or a recess suitable for receiving said protuberance, and a connecting ring retaining link with at least one aperture suitable to receive said protuberance and said connecting ring between at least two of said adjacent circumferential ends.
15. A pressure retaining closure comprising:
a round door having an inner and outer surface;
an arcuate locking ring having a plurality of arcuate locking ring segments and at least one connecting ring movably retained proximate an outer circumference of said outer surface of said door;
at least one cavity extending through the arcuate length of each of said plurality of arcuate locking ring segments, said at least one cavity having an arcuately extending axial opening in each of said plurality of arcuate locking ring segments;
said at least one connecting ring arcuately extending through each of said cavities of said locking ring segments retaining each of said locking ring segments together forming said locking ring;
said at least one cavity having a greater cross-sectional area than the cross-sectional area of said connecting ring extending therethrough; and
said arcuate locking ring being suitable to expand and contract wherein an outer circumferential portion of said locking ring is suitable to engage a groove within an inner circumferential surface of an opening in a pipe, vessel, or hub extending therefrom when said locking ring is in an expanded orientation and is suitable to contract to a circumference less than the inner circumference of said opening.
16. The pressure retaining closure of claim 15 wherein said outer cross-sectional surface of said at least one connecting ring and said cross-sectional area of said at least one cavity is rectangular.
17. The pressure retaining closure of claim 15 wherein said outer cross-sectional surface of said at least one connecting ring and said cross-sectional area of said at least one cavity is rounded.
18. The pressure retaining closure of claim 15 wherein said connecting ring is solid.
19. The pressure retaining closure of claim 15 wherein said connecting ring is hollow.
20. The pressure retaining closure of claim 15 wherein each of said arcuately extending axially openings have a width proximate the diameter of said connecting ring therein, each of said locking ring segments having at least one adjacent circumferential end with either a protuberance or a recess suitable for receiving said protuberance, and a connecting ring retaining link with at least one aperture suitable to receive said protuberance and said connecting ring between at least two of said adjacent circumferential ends.
21. The pressure retaining closure of claim 15 having at least two cavities in each of said plurality of locking ring segments and at least two connecting rings.
22. The pressure retaining closure of claim 21 wherein each of said cavities has an arcuately extending axially outward opening with a width greater than the diameter of said connecting ring therein and a connecting ring retaining link between at least two of said arcuate locking ring segments, said connecting ring retaining link having at least one aperture receiving each of said connecting rings.
23. The pressure retaining closure of claim 15 wherein said locking ring has an inner and outer load bearing surface, said inner and said outer load bearing surfaces being substantially frustoconical.
24. The pressure retaining closure of claim 15 wherein at least one of said arcuately extending openings is in an axially inward facing surface of each of said locking ring locking ring segments, said axially inward facing surface being proximate said outer surface of said door.
25. The pressure retaining closure of claim 15 wherein at least one of said arcuately extending openings is in an axially outward surface of each of said locking ring segments, said axially outward surface facing away from said outer surface of said door.
26. A pressure retaining closure for an opening in a pipe, vessel, or hub extending therefrom comprising:
a round door having an inner and outer surface;
an arcuate locking ring having a plurality of arcuate locking ring segments and at least one connecting ring movably retained proximate an outer circumference of said outer surface of said door;
at least one rounded cavity extending through the arcuate length of each of said plurality of arcuate locking ring segments, said at least one cavity having an arcuately extending axial opening in each of said plurality of arcuate locking ring segments;
said at least one connecting ring having a rounded outer cross-sectional surface and arcuately extending through each of said cavities of said locking ring segments retaining each of said locking ring segments together forming said locking ring;
said at least one cavity having a greater cross-sectional area than the cross-sectional area of said connecting ring extending therethrough; and
said arcuate locking ring being suitable to expand and contract wherein an outer circumferential portion of said locking ring is suitable to engage an inner annular groove within an inner circumferential surface of said opening when said locking ring is in an expanded orientation and is suitable to contract to a circumference less than the inner circumference of the opening.
27. The pressure retaining closure of claim 26 wherein said locking ring has an inner load bearing surface and an outer load bearing surface, said inner load bearing surface being adapted to cooperate with an outer perimeter portion of said outer surface of said door and said outer load bearing surface being adapted to cooperate with said inner annular groove.
28. The pressure retaining closure of claim 27 wherein said load bearing surfaces are substantially frustoconical.
29. The pressure retaining closure of claim 27 wherein said load bearing surfaces form an angle with respect to a central axis of said locking ring of at least 30°.
30. The pressure retaining closure of claim 29 wherein said load bearing surfaces are substantially parallel.
31. The pressure retaining closure of claim 26 wherein said outer surface of said door has a tapered portion proximate the outer circumference thereof.
32. A pressure retaining closure for an opening in a pipe, vessel, or hub extending therefrom comprising:
a round door having an inner and outer surface;
an arcuate locking ring having a plurality of arcuate locking ring segments slidingly retained proximate an outer circumference of said outer surface of said door, said arcuate locking ring having two end faces and being suitable to radially expand and contract altering a distance between said two end faces;
a connecting ring retaining link fastened between each of said arcuate locking ring segments and each of said end faces of said arcuate locking ring, each of said connecting ring retaining links having a portion extending radially inward from an inner radial surface of said arcuate locking ring, said inward extending portion having an aperture therein; and
a connecting ring arcuately extending through each of said apertures of said connecting ring retaining links retaining each of said locking ring segments together forming said arcuate locking ring.
33. The pressure retaining closure of claim 32 wherein said arcuate locking ring segments are solid.
34. The pressure retaining closure of claim 32 wherein said arcuate locking ring segments have a rectangular cross-sectional configuration.
35. The pressure retaining closure of claim 32 wherein said connecting ring retaining links are fastened between each of said arcuate locking ring segments with at least one fastener having a head, each of said arcuate locking ring segments having said at least one fastener head extending thereto has a cavity suitable for receiving one of said at least one fastener head.
36. The pressure retaining closure of claim 35 wherein each of said at least one cavity has a diameter greater than said fastener head being received therein by an amount sufficient to allow said locking ring segments to flex or contract in a radial direction wherein said fastener heads do not damage said locking ring segments.
37. The pressure retaining closure of claim 36 wherein said inner surface of said door has a molded seal within a circumferential groove proximate an outer circumference thereof.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/021,886 US20090084791A1 (en) | 2007-10-02 | 2008-01-29 | Closure Having a Segmented Locking Ring |
US12/681,384 US8251243B2 (en) | 2007-10-02 | 2008-06-09 | Closure having a segmented locking ring |
PCT/US2008/066319 WO2009045574A1 (en) | 2007-10-02 | 2008-06-09 | Closure having segmented locking ring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US97699707P | 2007-10-02 | 2007-10-02 | |
US12/021,886 US20090084791A1 (en) | 2007-10-02 | 2008-01-29 | Closure Having a Segmented Locking Ring |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/681,384 Continuation-In-Part US8251243B2 (en) | 2007-10-02 | 2008-06-09 | Closure having a segmented locking ring |
US12/681,384 Continuation US8251243B2 (en) | 2007-10-02 | 2008-06-09 | Closure having a segmented locking ring |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090084791A1 true US20090084791A1 (en) | 2009-04-02 |
Family
ID=40507009
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/021,886 Abandoned US20090084791A1 (en) | 2007-10-02 | 2008-01-29 | Closure Having a Segmented Locking Ring |
US12/681,384 Active 2028-03-16 US8251243B2 (en) | 2007-10-02 | 2008-06-09 | Closure having a segmented locking ring |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/681,384 Active 2028-03-16 US8251243B2 (en) | 2007-10-02 | 2008-06-09 | Closure having a segmented locking ring |
Country Status (2)
Country | Link |
---|---|
US (2) | US20090084791A1 (en) |
WO (1) | WO2009045574A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101936393A (en) * | 2010-09-10 | 2011-01-05 | 江苏盛伟过滤设备有限公司 | Opening telescope type conical sleeve and fast-opening blind plate locking mechanism thereof |
WO2011010119A1 (en) * | 2009-07-21 | 2011-01-27 | Pipeline Engineering & Supply Company Limited | Pipeline closure |
US20110146825A1 (en) * | 2009-12-18 | 2011-06-23 | Grundfos Management A/S | Conduit closure |
CN103213781A (en) * | 2013-03-28 | 2013-07-24 | 章锡明 | Pressure self-sealing device for manhole cover of powder tanker |
CN103216615A (en) * | 2013-04-17 | 2013-07-24 | 中国石油集团工程设计有限责任公司 | Novel fixed pressure ring type fast opening blind plate and opening and closing method of novel fixed pressure ring type fast opening blind plate |
WO2013131200A1 (en) * | 2012-03-09 | 2013-09-12 | Simson Innovation | Quick-acting closure for pressure vessels |
CN104565517A (en) * | 2014-12-30 | 2015-04-29 | 特瑞斯能源装备股份有限公司 | Novel pure-mechanical-type safety interlocking device |
CN106763763A (en) * | 2017-03-22 | 2017-05-31 | 特瑞斯能源装备股份有限公司 | Safety interlocking device for quick-opening blind plate |
US20190003651A1 (en) * | 2016-12-12 | 2019-01-03 | National Oilwell Varco, L.P. | Pressure Vessel and Door Actuator |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8752634B2 (en) | 2011-10-26 | 2014-06-17 | Vetco Gray Inc. | Segmented seal ring and support of same |
DE102012004961A1 (en) * | 2012-03-14 | 2013-09-19 | Aesculap Ag | security seal |
DE202014101107U1 (en) * | 2014-03-12 | 2015-06-17 | Krones Aktiengesellschaft | Movement device for moving a pressure tube cover relative to a pressure tube |
US9605767B2 (en) * | 2014-06-11 | 2017-03-28 | Strom, Inc. | Systems and methods utilizing a grooveless fluid end for high pressure pumping |
US10118745B1 (en) | 2015-01-22 | 2018-11-06 | Sypris Technologies, Inc. | Pressurized closure assembly |
CN104806756B (en) * | 2015-03-09 | 2017-03-22 | 黄冈市钰丰精密五金有限公司 | Wedge block type quick opening blind plate |
US10180022B1 (en) * | 2017-03-10 | 2019-01-15 | Ram Garg | Hinge assembly to pivotably mount blind flange to pipe weld neck flange |
WO2023239333A1 (en) * | 2022-06-08 | 2023-12-14 | Figesfizik Ve Geometride Bilgisayar Simulasyonu Hizmet Ticaret Anonim Sirketi | A multi-piece ring configuration |
Citations (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1339905A (en) * | 1918-04-20 | 1920-05-11 | Union Railway Equipment Co | Tank hand-hole and cover |
US2040024A (en) * | 1935-03-05 | 1936-05-05 | Roberts George | Container |
US2158218A (en) * | 1935-03-14 | 1939-05-16 | Solvay | Method of closing metal drums |
US2180606A (en) * | 1936-11-06 | 1939-11-21 | Hudson Mfg Co H D | Sprayer construction and cover clamping device |
US2558220A (en) * | 1946-06-08 | 1951-06-26 | Dominion Bridge Co Ltd | Container closure |
US2616587A (en) * | 1949-05-14 | 1952-11-04 | Charles L Petch | Keeper ring construction |
US2721094A (en) * | 1952-10-29 | 1955-10-18 | Paul W Webster | Closure fastener for pressure container |
US3449860A (en) * | 1967-06-01 | 1969-06-17 | Robert L Franks Jr | Apparatus for closing openings |
US3539212A (en) * | 1968-06-26 | 1970-11-10 | Alexandr Pavlovich Poltorak | Lock for a quick opening cover of a pressure-resistant shell |
US3667649A (en) * | 1969-11-05 | 1972-06-06 | Georges Thillet | Closure device for sealing an opening in a wall of a pressurizable chamber |
US3960395A (en) * | 1974-06-17 | 1976-06-01 | Amerace Corporation | Expansion clamp |
US4102474A (en) * | 1974-05-28 | 1978-07-25 | General Descaling Company Limited | Closure member |
US4140240A (en) * | 1976-11-01 | 1979-02-20 | General Descaling Company Limited | Closure for pipes or pressure vessels |
US4152871A (en) * | 1978-03-15 | 1979-05-08 | The United States Of America As Represented By The Attorney General | Vehicle barricade |
US4222147A (en) * | 1978-03-20 | 1980-09-16 | Reading Door Closer Corp. | Door closer with assist or door operating features |
US4315577A (en) * | 1980-12-22 | 1982-02-16 | Bernson Jr Albert | Closure assembly |
US4339843A (en) * | 1978-03-20 | 1982-07-20 | Reading-Dorma Closer Corporation | Door closer with assist or door operating features |
US4387740A (en) * | 1981-05-15 | 1983-06-14 | T. D. Williamson, Inc. | Cam-flange |
US4514287A (en) * | 1982-01-08 | 1985-04-30 | Nippon Oil Co., Ltd. | Process for the solvent deasphalting of asphaltene-containing hydrocarbons |
US4627763A (en) * | 1984-07-03 | 1986-12-09 | Roemac Industrial Sales, Inc. | Vehicle barrier construction |
US4693278A (en) * | 1986-11-10 | 1987-09-15 | T. D. Williamson, Inc. | Safety closure member |
US4815163A (en) * | 1988-06-30 | 1989-03-28 | Simmons William O | Storm door lock apparatus |
US4815627A (en) * | 1988-01-28 | 1989-03-28 | Westinghouse Electric Corp. | High preload quick operating closure |
US4883637A (en) * | 1988-08-25 | 1989-11-28 | Nuclear Assurance Corporation | Closure arrangement for spent nuclear fuel shipping containers |
US4920609A (en) * | 1989-07-24 | 1990-05-01 | Solid Well International Corp. | Pneumatic door closer |
US5035321A (en) * | 1989-07-21 | 1991-07-30 | Denton Thomas A | Cleaning supplies caddy |
US5127535A (en) * | 1988-09-28 | 1992-07-07 | Nippon Steel Corporation | Quick-acting closure with sliding retaining-ring |
US5207398A (en) * | 1990-11-30 | 1993-05-04 | Messier-Bugatti | Device for locking a support for steerable wheels |
US5700043A (en) * | 1995-06-09 | 1997-12-23 | La Calhene | Disconnectable connecting device for two components with a non-circular outline, particularly oval |
US5743575A (en) * | 1997-01-27 | 1998-04-28 | Adac Plastics, Inc. | Fluid-damped automotive door latch actuator |
US6200123B1 (en) * | 1995-06-12 | 2001-03-13 | Husky Injection Molding Systems Ltd. | Hydraulic closing unit |
US6293051B1 (en) * | 2000-02-21 | 2001-09-25 | Dcl, Inc. | Automated hatch |
US6786670B2 (en) * | 2001-10-30 | 2004-09-07 | Robbins & Myers Energy Systems, L.P. | Threaded closure |
US6857536B2 (en) * | 2002-02-13 | 2005-02-22 | General Signal Uk Limited | Support device and method for a rotary closure assembly |
US7036674B2 (en) * | 2001-11-05 | 2006-05-02 | Robbins & Myers Energy Systems, L.P. | Closure for a pressure vessel and method |
US7051897B2 (en) * | 2001-11-05 | 2006-05-30 | Robbins & Myers Energy Systems, L.P. | Closure for a pressure vessel and method |
US7118472B2 (en) * | 2003-06-27 | 2006-10-10 | Kennedy William R | Control system for pneumatically-powered door installation |
US7669730B2 (en) * | 2007-09-13 | 2010-03-02 | Productopop, Inc. | Beverage cup with storage bin and bottle opener |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3276257D1 (en) | 1982-09-28 | 1987-06-11 | Williamson Inc T | Pressure activated closure lock |
GB8316223D0 (en) | 1983-06-14 | 1983-07-20 | Gen Descaling Co Ltd | Pressure vessel closure and seal |
EP1032782B1 (en) | 1997-11-21 | 2004-05-06 | Simson Innovationen | Quick release coupling device for hollow body |
US6439415B1 (en) * | 2000-06-02 | 2002-08-27 | Perry Equipment Corporation | Closure for an equipment sub |
CN1230646C (en) * | 2001-06-01 | 2005-12-07 | 热诺耶股份有限公司 | Fast opening and closing access door for pipes and contains |
US8297463B2 (en) | 2008-04-18 | 2012-10-30 | Perry Equipment Corporation | Closure for an equipment sub |
-
2008
- 2008-01-29 US US12/021,886 patent/US20090084791A1/en not_active Abandoned
- 2008-06-09 US US12/681,384 patent/US8251243B2/en active Active
- 2008-06-09 WO PCT/US2008/066319 patent/WO2009045574A1/en active Application Filing
Patent Citations (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1339905A (en) * | 1918-04-20 | 1920-05-11 | Union Railway Equipment Co | Tank hand-hole and cover |
US2040024A (en) * | 1935-03-05 | 1936-05-05 | Roberts George | Container |
US2158218A (en) * | 1935-03-14 | 1939-05-16 | Solvay | Method of closing metal drums |
US2180606A (en) * | 1936-11-06 | 1939-11-21 | Hudson Mfg Co H D | Sprayer construction and cover clamping device |
US2558220A (en) * | 1946-06-08 | 1951-06-26 | Dominion Bridge Co Ltd | Container closure |
US2616587A (en) * | 1949-05-14 | 1952-11-04 | Charles L Petch | Keeper ring construction |
US2721094A (en) * | 1952-10-29 | 1955-10-18 | Paul W Webster | Closure fastener for pressure container |
US3449860A (en) * | 1967-06-01 | 1969-06-17 | Robert L Franks Jr | Apparatus for closing openings |
US3539212A (en) * | 1968-06-26 | 1970-11-10 | Alexandr Pavlovich Poltorak | Lock for a quick opening cover of a pressure-resistant shell |
US3667649A (en) * | 1969-11-05 | 1972-06-06 | Georges Thillet | Closure device for sealing an opening in a wall of a pressurizable chamber |
US4102474A (en) * | 1974-05-28 | 1978-07-25 | General Descaling Company Limited | Closure member |
US3960395A (en) * | 1974-06-17 | 1976-06-01 | Amerace Corporation | Expansion clamp |
US4140240A (en) * | 1976-11-01 | 1979-02-20 | General Descaling Company Limited | Closure for pipes or pressure vessels |
US4422651A (en) * | 1976-11-01 | 1983-12-27 | General Descaling Company Limited | Closure for pipes or pressure vessels and a seal therefor |
US4152871A (en) * | 1978-03-15 | 1979-05-08 | The United States Of America As Represented By The Attorney General | Vehicle barricade |
US4222147A (en) * | 1978-03-20 | 1980-09-16 | Reading Door Closer Corp. | Door closer with assist or door operating features |
US4339843A (en) * | 1978-03-20 | 1982-07-20 | Reading-Dorma Closer Corporation | Door closer with assist or door operating features |
US4315577A (en) * | 1980-12-22 | 1982-02-16 | Bernson Jr Albert | Closure assembly |
US4387740A (en) * | 1981-05-15 | 1983-06-14 | T. D. Williamson, Inc. | Cam-flange |
US4514287A (en) * | 1982-01-08 | 1985-04-30 | Nippon Oil Co., Ltd. | Process for the solvent deasphalting of asphaltene-containing hydrocarbons |
US4627763A (en) * | 1984-07-03 | 1986-12-09 | Roemac Industrial Sales, Inc. | Vehicle barrier construction |
US4693278A (en) * | 1986-11-10 | 1987-09-15 | T. D. Williamson, Inc. | Safety closure member |
US4815627A (en) * | 1988-01-28 | 1989-03-28 | Westinghouse Electric Corp. | High preload quick operating closure |
US4815163A (en) * | 1988-06-30 | 1989-03-28 | Simmons William O | Storm door lock apparatus |
US4883637A (en) * | 1988-08-25 | 1989-11-28 | Nuclear Assurance Corporation | Closure arrangement for spent nuclear fuel shipping containers |
US5127535A (en) * | 1988-09-28 | 1992-07-07 | Nippon Steel Corporation | Quick-acting closure with sliding retaining-ring |
US5035321A (en) * | 1989-07-21 | 1991-07-30 | Denton Thomas A | Cleaning supplies caddy |
US4920609A (en) * | 1989-07-24 | 1990-05-01 | Solid Well International Corp. | Pneumatic door closer |
US5207398A (en) * | 1990-11-30 | 1993-05-04 | Messier-Bugatti | Device for locking a support for steerable wheels |
US5700043A (en) * | 1995-06-09 | 1997-12-23 | La Calhene | Disconnectable connecting device for two components with a non-circular outline, particularly oval |
US6200123B1 (en) * | 1995-06-12 | 2001-03-13 | Husky Injection Molding Systems Ltd. | Hydraulic closing unit |
US5743575A (en) * | 1997-01-27 | 1998-04-28 | Adac Plastics, Inc. | Fluid-damped automotive door latch actuator |
US6293051B1 (en) * | 2000-02-21 | 2001-09-25 | Dcl, Inc. | Automated hatch |
US6786670B2 (en) * | 2001-10-30 | 2004-09-07 | Robbins & Myers Energy Systems, L.P. | Threaded closure |
US7036674B2 (en) * | 2001-11-05 | 2006-05-02 | Robbins & Myers Energy Systems, L.P. | Closure for a pressure vessel and method |
US7051897B2 (en) * | 2001-11-05 | 2006-05-30 | Robbins & Myers Energy Systems, L.P. | Closure for a pressure vessel and method |
US6857536B2 (en) * | 2002-02-13 | 2005-02-22 | General Signal Uk Limited | Support device and method for a rotary closure assembly |
US7341161B2 (en) * | 2002-07-02 | 2008-03-11 | Robbins & Myers Energy Systems L.P. | Closure for a pressure vessel and method |
US7118472B2 (en) * | 2003-06-27 | 2006-10-10 | Kennedy William R | Control system for pneumatically-powered door installation |
US7669730B2 (en) * | 2007-09-13 | 2010-03-02 | Productopop, Inc. | Beverage cup with storage bin and bottle opener |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011010119A1 (en) * | 2009-07-21 | 2011-01-27 | Pipeline Engineering & Supply Company Limited | Pipeline closure |
US20130025209A1 (en) * | 2009-07-21 | 2013-01-31 | Paul Lidster | Pipeline closure |
US20110146825A1 (en) * | 2009-12-18 | 2011-06-23 | Grundfos Management A/S | Conduit closure |
EP2341267A1 (en) * | 2009-12-18 | 2011-07-06 | Grundfos Management A/S | Conduit lock |
CN101936393A (en) * | 2010-09-10 | 2011-01-05 | 江苏盛伟过滤设备有限公司 | Opening telescope type conical sleeve and fast-opening blind plate locking mechanism thereof |
CN104321168A (en) * | 2012-03-09 | 2015-01-28 | 西姆松创新公司 | Quick-acting closure for pressure vessels |
WO2013131200A1 (en) * | 2012-03-09 | 2013-09-12 | Simson Innovation | Quick-acting closure for pressure vessels |
CN103213781A (en) * | 2013-03-28 | 2013-07-24 | 章锡明 | Pressure self-sealing device for manhole cover of powder tanker |
CN103216615A (en) * | 2013-04-17 | 2013-07-24 | 中国石油集团工程设计有限责任公司 | Novel fixed pressure ring type fast opening blind plate and opening and closing method of novel fixed pressure ring type fast opening blind plate |
CN104565517A (en) * | 2014-12-30 | 2015-04-29 | 特瑞斯能源装备股份有限公司 | Novel pure-mechanical-type safety interlocking device |
US20190003651A1 (en) * | 2016-12-12 | 2019-01-03 | National Oilwell Varco, L.P. | Pressure Vessel and Door Actuator |
US10851946B2 (en) * | 2016-12-12 | 2020-12-01 | National Oilwell Varco, L.P. | Pressure vessel and door actuator |
CN106763763A (en) * | 2017-03-22 | 2017-05-31 | 特瑞斯能源装备股份有限公司 | Safety interlocking device for quick-opening blind plate |
CN106763763B (en) * | 2017-03-22 | 2019-08-16 | 特瑞斯能源装备股份有限公司 | Safety interlocking device for quick-opening blind plate |
Also Published As
Publication number | Publication date |
---|---|
US8251243B2 (en) | 2012-08-28 |
WO2009045574A1 (en) | 2009-04-09 |
US20100206878A1 (en) | 2010-08-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090084791A1 (en) | Closure Having a Segmented Locking Ring | |
US7896187B2 (en) | Locking ring actuator for a pressure retaining closure | |
US7290603B2 (en) | Downhole plug | |
JPS6069365A (en) | Seal for pipe or pressure vessel | |
CA1164022A (en) | Annulus sealing device | |
US5150927A (en) | Expandable seal arrangement | |
CA2060781C (en) | Bidirectional gasket | |
US7341161B2 (en) | Closure for a pressure vessel and method | |
CA2522770C (en) | Gasket for pipe coupling and pipe coupling incorporating same | |
US4191389A (en) | Sealing washer | |
JPH09382U (en) | Air spring end member and air spring assembly | |
AU602768B2 (en) | A sealing ring | |
JPH02209640A (en) | Tightening ring assembly for pneumatic spring | |
JP5552165B2 (en) | Filter for liquid or gaseous media | |
JPS6011779A (en) | Cover for pressure vessel, etc. | |
US6390007B1 (en) | Drain plug system for a boat | |
EP1345783A1 (en) | Assembly consisting of a tyre and a sealing component and method for making same | |
US20100072204A1 (en) | Two-Piece Closure Device | |
US3019038A (en) | Fitting | |
US9097346B1 (en) | Closure lip seal relief | |
EP0783085B1 (en) | Flexible piece for mounting into a bore | |
US20190331283A1 (en) | Encapsulation sleeve gasket assembly with detachable inner layer | |
CN109895365B (en) | Pipeline expand tube mounting tool | |
CN218072135U (en) | Single-hand remote controller | |
JPH09280447A (en) | Oscillating expansion universal pipe joint |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SYPRIS TECHNOLOGIES, INC., KENTUCKY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAIBEL, JOSH;REEL/FRAME:020436/0141 Effective date: 20080129 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |