US3667649A - Closure device for sealing an opening in a wall of a pressurizable chamber - Google Patents

Closure device for sealing an opening in a wall of a pressurizable chamber Download PDF

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Publication number
US3667649A
US3667649A US86182A US3667649DA US3667649A US 3667649 A US3667649 A US 3667649A US 86182 A US86182 A US 86182A US 3667649D A US3667649D A US 3667649DA US 3667649 A US3667649 A US 3667649A
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Prior art keywords
opening
locking members
closure member
members
locking
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US86182A
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Georges Thillet
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Neyrpic SA
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Georges Thillet
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0311—Closure means
    • 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

Definitions

  • the invention relates to closure devices and in particular to the combination of a pressurizable chamber and a closure device for sealing an opening in a wall of the chamber.
  • a pressurizable chamber having an opening in a wall thereof and a device for sealing the opening
  • the device including a closure member for closing the opening, a sealing member for sealing the opening when the closure member is in its operative position, and a plurality of locking members movable radially of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber, the locking members when in their locking position abutting the closure member and having portions thereof engaging corresponding recesses in that portion of the wall surrounding the opening.
  • FIG. 1 is a longitudinal section of the combination of a pressurized chamber wall and closure device according to the invention.
  • FIG. 2 is a part plan looking in the direction of the arrows II II in FIG. 1.
  • the combination includes a pressurized chamber consisting of a wall formed from a number of layers which may be circumferentially reinforced so as to withstand high internal pressures.
  • the chamber wall includes a ring 2 of enlarged thickness and defines a cylindrical opening; the ring is secured to the remainder of the wall by any known method, in this case by welding.
  • a closure device for the opening includes a cylindrical member 3 able to withstand the pressure inside the chamber 1 and freely slidable along the axis of the opening due to a clearance 4 left between the cylindrical member and the inner wall of the ring 2. Sealing between the member 3 and the inner wall surface 21 defining the opening is provided, for example, by a resilient cord 5 disposed in a lateral groove 6 of the member 3.
  • the member 3 has a conical outer surface 7 against which a plurality of locking members 8 are disposed.
  • the locking members 8 can slide radially of the opening along the outer surface 7 of the plug and their profile extending towards the inner surface 21 of the ring 2 is provided with a plurality of notches 9 engaging in corresponding grooves 10 formed in the surface 21.
  • the profile of the outer surface 7 of the plug and of the notches 9 is so determined that the locking members are held in place simply by the effect of the pressure applied to the member 3.
  • the surface 7 is a frusto-conical surface and the notches are parallel to the surface 7.
  • the locking members comprise at least two segments 81 (FIG. 2) spaced apart by gaps i, the facing surfaces 810 being parallel.
  • Each gap is provided with a further locking member 82 having parallel surfaces and of a width substantially equal to that of the gap i; the outer profiles of the segments and of the further locking members comprise identical notches and thus fonn a continuous ring when all the segments and members are in place.
  • the members 82 are first removed by sliding in the gaps i and then the segments 81 can be shified towards the center by a distance slightly greater than the thickness of the notches 9 so that the member 3 can slide along the opening axis.
  • the locking members When the opening axis is vertical, the locking members are displaced in a substantially horizontal plane and the closure device can then be moved manually or, for example, by a travelling crane, depending upon the weight of the device.
  • the member 3 shown in FIG. 1 is moved along the opening axis by means of a jack 1! pivotally connected to the member 3 and to a fixed point.
  • Two groups of jacks 181 and 182 are secured to the jack 1 l and one group is pivotally connected to the segments 81 while the other group is pivotally connected to the members 82.
  • the jacks may be mechanical or hydraulic, hydraulic control enabling the rapid and simultaneous movement of the member 82 and segments 81 to be performed easily.
  • the jacks 182 are actuated to withdraw the members 82 and then the segments 81 are withdrawn by the jacks 181 and the released member 3 can then be lifted by means of the jack 11.
  • the jacks 181 are not parallel to the surface 7 so that the member 3 has to be displaced towards the interior of the chamber by means of the jack 11 to enable the segments 81 to be withdrawn. This arrangement provides additional security since the plug can be displaced only when the pressure inside the chamber is low enough.
  • the means for controlling the movement of the locking members as described hereinabove may be replaced by any means performing the same function.
  • segments 81 and members 82 could be connected, by links, to two sleeves sliding axially one after the other to provide successive displacement of the wedges and segments.
  • the locking members need not necessarily form a continuous ring but could be spaced apart by a distance sufficient to allow their simultaneous radial displacement, the system for controlling the displacement of the locking members providing a more rapid displacement of the members 82 than of the segments 81.
  • the outer profile of the notches of the locking members could be designed to allow them to be disengaged by rotation about their base.
  • control circuit for the movement of the locking members may, of course, be rendered automatic.
  • a pressurizable chamber having an opening in a wall thereof and a device for sealing the opening, the device including a closure member for closing the opening; a sealing member for sealing the opening when the closure member is in its operative position, and a plurality of locking members movable radially of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber, the locking members when in their locking position abutting the closure member and having portions thereof engaging corresponding recesses in that portion of the wall surrounding the opening, the locking members including at least two spaced segments having gaps therebetween each gap being occupied by a further slidable locking member having parallel side surfaces and of a width approximately equal to that of the gap.

Abstract

The combination of a pressurizable chamber and a closure device comprised of a closure member operable to close an opening in a wall of the chamber, a sealing member operable to seal the opening when the closure member is disposed in the opening and a plurality of locking members movable radially outwardly of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber; the locking members when in their locking position abutting the closure member and having portions thereof engaging in corresponding recesses in that portion of the wall surrounding the opening. The locking members may be moved automatically by means of jacks.

Description

.11 Unite States atent 1151 3,667,649 Thillet 14 1 June 6, 1972 [54] CLOSURE DEVICE FOR SEALING AN FOREIGN PATENTS OR APPLICATIONS OPENING IN A WALL OF A 687,708 6/1964 Canada ..220/55 R PRESSURIZABLE CHAMBER 1,017,261 12/1952 France .220/55 R [72] Inventor: Georges Thiuet, 26, we Edouard vamam, 490,788 12/1925 Germany .1292/25665 Grenoble (Isa-e) France Primary Examiner-M. Henson Wood, Jr. [22] Filed: Nov. 2, 1970 Assistant Examiner-Edwin D. Grant 1 pp NO A 86 182 Attorney-Cameron, Kerkam & Sutton [57] ABSTRACT [30] Foreign Application Priority Dam The combination of a pressurizable chamber and a closure Nov. 5, 1969 France ..6938066 device Comprised of a closure member Operable to close an opening in a wall of the chamber, a sealing member operable 52 U.S. c1. ..220/ss Y, 49/465, 292/256.65 Seal the P 8 when the member is disposed in 51 1111. C1. ..A47j 36/10 the Penin8 and a plurality of king members um/able radi- [58] Field of Search 22055 R 55 49/463 ally outwardly of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber; the locking members when in their 56] References Cited locking position abutting the closure member and having portions thereof engaging in corresponding recesses in that portion of the wall surrounding the opening. The locking members may be moved automatically by means of jacks.
5 Claims, 2 Drawing Figures CLOSURE DEVICE FOR SEALING AN OPENING IN A WALL OF A PRESSURIZABLE CHAMBER The invention relates to closure devices and in particular to the combination of a pressurizable chamber and a closure device for sealing an opening in a wall of the chamber.
According to the invention, there is provided the combination of a pressurizable chamber having an opening in a wall thereof and a device for sealing the opening, the device including a closure member for closing the opening, a sealing member for sealing the opening when the closure member is in its operative position, and a plurality of locking members movable radially of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber, the locking members when in their locking position abutting the closure member and having portions thereof engaging corresponding recesses in that portion of the wall surrounding the opening.
An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings, in which:
FIG. 1 is a longitudinal section of the combination of a pressurized chamber wall and closure device according to the invention, and
FIG. 2 is a part plan looking in the direction of the arrows II II in FIG. 1.
Referring to the drawings, the combination includes a pressurized chamber consisting of a wall formed from a number of layers which may be circumferentially reinforced so as to withstand high internal pressures. The chamber wall includes a ring 2 of enlarged thickness and defines a cylindrical opening; the ring is secured to the remainder of the wall by any known method, in this case by welding.
A closure device for the opening includes a cylindrical member 3 able to withstand the pressure inside the chamber 1 and freely slidable along the axis of the opening due to a clearance 4 left between the cylindrical member and the inner wall of the ring 2. Sealing between the member 3 and the inner wall surface 21 defining the opening is provided, for example, by a resilient cord 5 disposed in a lateral groove 6 of the member 3.
The member 3 has a conical outer surface 7 against which a plurality of locking members 8 are disposed. The locking members 8 can slide radially of the opening along the outer surface 7 of the plug and their profile extending towards the inner surface 21 of the ring 2 is provided with a plurality of notches 9 engaging in corresponding grooves 10 formed in the surface 21.
When the chamber is pressurized the pressure is taken by the member 3 which tends to move out of the opening and thus bears on the grooves 10 by means of the locking members 8. In this condition, the pressure effect is exerted only in the zone bounded by the gasket and the ring 2 is dimensionsed only to withstand the background effect. The force is transmitted continuously over a circle formed by the locking members 8.
The profile of the outer surface 7 of the plug and of the notches 9 is so determined that the locking members are held in place simply by the effect of the pressure applied to the member 3. In the case of FIG. 1, the surface 7 is a frusto-conical surface and the notches are parallel to the surface 7.
When the pressure inside the chamber ceases, the member 3 no longer exerts any force on the locking members 8 and the latter can then be withdrawn. To this end, the locking members comprise at least two segments 81 (FIG. 2) spaced apart by gaps i, the facing surfaces 810 being parallel. Each gap is provided with a further locking member 82 having parallel surfaces and of a width substantially equal to that of the gap i; the outer profiles of the segments and of the further locking members comprise identical notches and thus fonn a continuous ring when all the segments and members are in place. When the pressure ceases, the members 82 are first removed by sliding in the gaps i and then the segments 81 can be shified towards the center by a distance slightly greater than the thickness of the notches 9 so that the member 3 can slide along the opening axis.
When the opening axis is vertical, the locking members are displaced in a substantially horizontal plane and the closure device can then be moved manually or, for example, by a travelling crane, depending upon the weight of the device.
When the device has to be moved quickly or when the aperture axis is horizontal, it is preferable to move the locking members by means of a special arrangement, an example of which is shown in FIG. 1.
The member 3 shown in FIG. 1 is moved along the opening axis by means of a jack 1! pivotally connected to the member 3 and to a fixed point. Two groups of jacks 181 and 182 are secured to the jack 1 l and one group is pivotally connected to the segments 81 while the other group is pivotally connected to the members 82.
The jacks may be mechanical or hydraulic, hydraulic control enabling the rapid and simultaneous movement of the member 82 and segments 81 to be performed easily.
When the closure device is to be opened, the jacks 182 are actuated to withdraw the members 82 and then the segments 81 are withdrawn by the jacks 181 and the released member 3 can then be lifted by means of the jack 11.
To close the opening, the same operations are carried out in the reverse sequence. After the chamber has been pressurized, the locking members are held in place by the pressure effect and the pressure in the jacks 181 and 182 can be released.
In the case of FIG. 1, the jacks 181 are not parallel to the surface 7 so that the member 3 has to be displaced towards the interior of the chamber by means of the jack 11 to enable the segments 81 to be withdrawn. This arrangement provides additional security since the plug can be displaced only when the pressure inside the chamber is low enough.
The invention, of course, is not limited to the details of the above-described embodiment which could be modified without departing from the scope of the invention as defined by the appended claims.
For example, the means for controlling the movement of the locking members as described hereinabove may be replaced by any means performing the same function.
For example, the segments 81 and members 82 could be connected, by links, to two sleeves sliding axially one after the other to provide successive displacement of the wedges and segments.
Also, the locking members need not necessarily form a continuous ring but could be spaced apart by a distance sufficient to allow their simultaneous radial displacement, the system for controlling the displacement of the locking members providing a more rapid displacement of the members 82 than of the segments 81.
In addition, the outer profile of the notches of the locking members could be designed to allow them to be disengaged by rotation about their base.
Finally, the entire control circuit for the movement of the locking members may, of course, be rendered automatic.
I claim:
1. The combination of a pressurizable chamber having an opening in a wall thereof and a device for sealing the opening, the device including a closure member for closing the opening; a sealing member for sealing the opening when the closure member is in its operative position, and a plurality of locking members movable radially of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber, the locking members when in their locking position abutting the closure member and having portions thereof engaging corresponding recesses in that portion of the wall surrounding the opening, the locking members including at least two spaced segments having gaps therebetween each gap being occupied by a further slidable locking member having parallel side surfaces and of a width approximately equal to that of the gap.
2. The combination according to claim 1, and including means for controlling the radial movement of the locking members.
and pivotally connected respectively to the further locking members and to the first mentioned members, the two groups of jacks being actuated successively.
5. The combination according to claim 2, wherein said means is operable to cause a faster displacement of the further members than that of the first mentioned members.
mg UNITED STATES PATENT OFFICE CERTIFICATE CF CORRECTION Patent No. 3 667 649 Dated June 6, 1972 Inventor(s) Georges Thillet It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
' [73] Assignee: B.V.S. Grenoble, France- Signed and sealed this Zhth day of October 1972.
(SEAL) Attest:
EDWARD M.FLETCI*1ER,JR. ROBERT GOTTSCHALK Attesting Officer Commissioner of Patents

Claims (5)

1. The combination of a pressurizable chamber having an opening in a wall thereof and a device for sealing the opening, the device including a closure member for closing the opening; a sealing member for sealing the opening when the closure member is in its operative position, and a plurality of locking members movable radially of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber, the locking members when in their locking position abutting the closure member and having portions thereof engaging corresponding recesses in that portion of the wall surrounding the opening, the locking members including at least two spaced segments having gaps therebetween each gap being occupied by a further slidable locking member having parallel side surfaces and of a width approximately equal to that of the gap.
2. The combination according to claim 1, and including means for controlling the radial movement of the locking members.
3. The combination according to claim 2, wherein said means is operable to successively cause the displacement of each further slidable locking member and then the displacement of the first mentioned locking members to enable the closure member to be removed from the opening.
4. The combination according to claim 3, wherein said means includes two groups of jacks connected to a fixed point and pivotally connected respectively to the further locking members and to the first mentioned members, the two groups of jacks being actuated successively.
5. The combination according to claim 2, wherein said means is operable to cause a faster displacement of the further members than that of the first mentioned members.
US86182A 1969-11-05 1970-11-02 Closure device for sealing an opening in a wall of a pressurizable chamber Expired - Lifetime US3667649A (en)

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FR6938066A FR2067501A5 (en) 1969-11-05 1969-11-05

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CH (1) CH526739A (en)
DE (1) DE2054328A1 (en)
FR (1) FR2067501A5 (en)
GB (1) GB1301911A (en)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4199120A (en) * 1977-11-01 1980-04-22 The Boeing Company Folding, plug type aircraft door
US4268360A (en) * 1980-03-03 1981-05-19 Koritsu Machine Industrial Limited Temporary heat-proof apparatus for use in repairing coke ovens
US4303177A (en) * 1979-03-05 1981-12-01 The United States Of America As Represented By The United States Department Of Energy Cavity closure arrangement for high pressure vessels
US4519519A (en) * 1982-02-26 1985-05-28 Westinghouse Electric Corp. Fuel transfer tube quick opening hatch
US4582212A (en) * 1983-02-22 1986-04-15 Kabushiki Kaisha Kobe Seiko Sho High pressure apparatus
US5148938A (en) * 1987-03-04 1992-09-22 Morgan Jr Howard W Pressure vessel
DE4133524C1 (en) * 1991-10-10 1993-04-29 Fissler Gmbh, 6580 Idar-Oberstein, De
EP1054195A1 (en) * 1999-04-10 2000-11-22 Pipeline Engineering Limited Pipeline closure
US6439415B1 (en) * 2000-06-02 2002-08-27 Perry Equipment Corporation Closure for an equipment sub
US20020162840A1 (en) * 2000-06-25 2002-11-07 Jean-Pierre Tschudi Compost box lid
US20040004081A1 (en) * 2001-11-05 2004-01-08 Mcguire Doughlas J. Closure for a pressure vessel and method
US20040056031A1 (en) * 2001-11-05 2004-03-25 Mcguire Douglas J. Closure for a pressure vessel and method
US20040250713A1 (en) * 2001-06-20 2004-12-16 Carl Bergman Press
AT500172A1 (en) * 2004-02-10 2005-11-15 Natex Prozesstech Gmbh LOCKING DEVICE FOR DETERMINING A LID
US20070227393A1 (en) * 2006-04-03 2007-10-04 Fulgosi Giovanni De Cerri Corrado & C.S.N.C. Hatch for the opening and closing of pressurised pipes, in particular for the opening and closing of branch pipes for the introduction of pipe cleaning and inspection apparatus
US20080092971A1 (en) * 2002-04-16 2008-04-24 Tm Industrial Supply, Inc. Access Cover for Piping or Vessel
US20080296302A1 (en) * 2007-06-01 2008-12-04 Guidry Jr Michael J Closure for a vessel
US20090084791A1 (en) * 2007-10-02 2009-04-02 Sypris Technologies, Inc. Closure Having a Segmented Locking Ring
US20090145904A1 (en) * 2007-06-01 2009-06-11 Guidry Jr Michael J Closure for a vessel
US20100175927A1 (en) * 2009-01-09 2010-07-15 Mike Zulak Earth drilling reamer with replaceable blades
US20100176127A1 (en) * 2006-02-01 2010-07-15 Ilmer Yusupovich Khasanov Fast acting gate
US7896187B2 (en) 2007-10-02 2011-03-01 Sypris Technologies, Inc. Locking ring actuator for a pressure retaining closure
US20130193142A1 (en) * 2012-01-26 2013-08-01 Halliburton Energy Services, Inc. Safety Cap
US8596484B1 (en) 2012-05-22 2013-12-03 Sypris Technologies, Inc. Tool-less closure
US9056701B1 (en) 2012-05-22 2015-06-16 Sypris Technologies, Inc. Tool-less closure
US20220072745A1 (en) * 2020-09-10 2022-03-10 Guangzhou Green And Health Biotech Co., Ltd. Polymer material supercritical fluid foaming autoclave with internal heat exchange
US11305248B2 (en) * 2020-09-10 2022-04-19 Guangzhou Green And Health Biotech Co., Ltd. Horizontal supercritical fluid autoclave and apparatus thereof
US11413592B2 (en) * 2020-09-10 2022-08-16 Guangzhou Green And Health Biotech Co., Ltd. Horizontal supercritical fluid foaming autoclave with internal stirring device

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DE3230457C2 (en) * 1982-08-16 1984-09-20 Skw Trostberg Ag, 8223 Trostberg Seal for a high-pressure container with an inner seal
GB2143923B (en) * 1983-07-28 1987-09-30 Taylor Woodrow Const Ltd High pressure chambers
DE3333153A1 (en) * 1983-09-14 1985-03-28 Alfred Teves Gmbh, 6000 Frankfurt Expansion element for securing of axial position
GB2172956B (en) * 1985-02-26 1989-06-14 Peco Uk Limited Closure
AT397420B (en) * 1991-03-01 1994-04-25 Schoeller Bleckmann Stahlwerke LOCKING DEVICE

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FR1017261A (en) * 1949-04-09 1952-12-05 Montedison Spa Closure for pressure vessels
US2670799A (en) * 1950-10-20 1954-03-02 Sun Oil Co Collapsible pipe plug
US3449860A (en) * 1967-06-01 1969-06-17 Robert L Franks Jr Apparatus for closing openings

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4199120A (en) * 1977-11-01 1980-04-22 The Boeing Company Folding, plug type aircraft door
US4303177A (en) * 1979-03-05 1981-12-01 The United States Of America As Represented By The United States Department Of Energy Cavity closure arrangement for high pressure vessels
US4268360A (en) * 1980-03-03 1981-05-19 Koritsu Machine Industrial Limited Temporary heat-proof apparatus for use in repairing coke ovens
US4519519A (en) * 1982-02-26 1985-05-28 Westinghouse Electric Corp. Fuel transfer tube quick opening hatch
US4582212A (en) * 1983-02-22 1986-04-15 Kabushiki Kaisha Kobe Seiko Sho High pressure apparatus
US5148938A (en) * 1987-03-04 1992-09-22 Morgan Jr Howard W Pressure vessel
DE4133524C1 (en) * 1991-10-10 1993-04-29 Fissler Gmbh, 6580 Idar-Oberstein, De
US5297473A (en) * 1991-10-10 1994-03-29 Fissler Gmbh Pressure cooker
DE4133524C2 (en) * 1991-10-10 1996-08-29 Fissler Gmbh Pressure cooker
EP1054195A1 (en) * 1999-04-10 2000-11-22 Pipeline Engineering Limited Pipeline closure
US6439415B1 (en) * 2000-06-02 2002-08-27 Perry Equipment Corporation Closure for an equipment sub
US20020162840A1 (en) * 2000-06-25 2002-11-07 Jean-Pierre Tschudi Compost box lid
US7926676B2 (en) 2001-06-20 2011-04-19 Avure Technologies Ab Press with pressure vessel supporting cover for movement between a first position and a second position
US20040250713A1 (en) * 2001-06-20 2004-12-16 Carl Bergman Press
US7739779B2 (en) 2001-06-20 2010-06-22 Avure Technologies Ab Method for opening a cylindrical pressure vessel
CN100425888C (en) * 2001-06-20 2008-10-15 阿吾尔技术股份公司 Press
US20080121120A1 (en) * 2001-06-20 2008-05-29 Carl Bergman Press
US20040004081A1 (en) * 2001-11-05 2004-01-08 Mcguire Doughlas J. Closure for a pressure vessel and method
US20040056031A1 (en) * 2001-11-05 2004-03-25 Mcguire Douglas J. Closure for a pressure vessel and method
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
US7850751B2 (en) * 2002-04-16 2010-12-14 Tm Industrial Supply, Inc. Access cover for piping or vessel
US20080092971A1 (en) * 2002-04-16 2008-04-24 Tm Industrial Supply, Inc. Access Cover for Piping or Vessel
US7341161B2 (en) 2002-07-02 2008-03-11 Robbins & Myers Energy Systems L.P. Closure for a pressure vessel and method
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DE2054328A1 (en) 1971-05-19
GB1301911A (en) 1973-01-04
CH526739A (en) 1972-08-15
FR2067501A5 (en) 1971-08-20

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