US3793692A - Fluid treating filter - Google Patents
Fluid treating filter Download PDFInfo
- Publication number
- US3793692A US3793692A US00314368A US3793692DA US3793692A US 3793692 A US3793692 A US 3793692A US 00314368 A US00314368 A US 00314368A US 3793692D A US3793692D A US 3793692DA US 3793692 A US3793692 A US 3793692A
- Authority
- US
- United States
- Prior art keywords
- sheet
- box
- configuration
- filter
- expanded
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/05—Methods of making filter
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/31—Filter frame
-
- 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
- Y10T29/00—Metal working
- Y10T29/18—Expanded metal making
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/496—Multiperforated metal article making
- Y10T29/49604—Filter
Definitions
- An improved filter for treating fluids utilizing a frame [52] 29/163'5 29/611, 55/518, of unitary construction.
- the frame is constructed from SS/DIG- 3 I 1 210/484 a sheet of expanded substantially rigid material having [Sl] Int. Cl. Bold 27/08 Solid Sections disposed between sections of expanded [58] Field of Search S5/DIG' material.
- the frame is adapted for folding into a box- 55/528; 29/163-5 210/484 485 like configuration with the solid portions forming end walls of the box.
- Filter media such as fiberglas, is dis- [56] References Cited posed within the enclosed box.
- the fiberglas media and the two closely perforated sheets of bright brass are held together by an inwardly facing U-channel constructed of fiber board or similar material.
- the side pieces of fiber board are either stapled together at their ends to hold them in tact with the perforated sheets or they are attached to the perforated sheets with an adhesive. Further, in some cases a narrowed metal strip is added to extend diagonally across each face of the perforated sheet to give extra strength.
- the present invention advantageously provides a straight forward arrangement for manufacturing a filter for treating fluids which is economical, easily fabricated, and contains a minimum number of parts.
- the present invention further provides an improved frame for supporting filter media.
- the present invention also provides a filter for treating fluids having improved strength and durability in operating position.
- the present invention provides a fluid treating filter comprising a filter media and a flowthrough box-like configured support frame of one piece integral and unitary construction framed as a unit to include fluid impervious end walls and integral front and back retaining screens, said frame being adapted to enclose said filter media.
- the present invention may include sidewalls adapted to fit and engage said support frame.
- FIG. 1 is a perspective view of a filter of the present invention
- FIG. 2 is a perspective view of a unitary frame assembly according to one advantageous embodiment of the present invention prior to being folded into a box-like configuration;
- FIG. 3 is a perspective view of a unitary frame assembly of FIG. 2 in a partially folded position
- FIG. 4 is an exploded perspective view of a filter of the present invention.
- F IG. 5 is a perspective view of a unitary frame assembly of another embodiment of the present invention prior to being folded into a box-like configuration
- FIG. 6 is a perspective view of a unitary frame assembly of FIG. 5 in a partially folded position
- FIG. 7 discloses a schematic flow diagram of an inventive method for making a new and useful filter of the present invention.
- FIG. 8 discloses a perspective schematic flow diagram for adding sides to a filter constructed according to the inventive method of FIG. 7.
- the filter assembly includes a unitary frame assembly 1, filter media 3, and detachable sides 2 and 1 l.
- the frame assembly 1 is bent into a boxlike configuration with filter media 3 disposed within the confines of the box.
- Detachable sides 2 and 11 which advantageously are of U-shaped cross-section, are adapted to outer fit and enclose the sides of the unitary frame assembly I.
- a latch member 9, shown in the Figures as an indented tongue, is provided on the sides 2 and 11 for engaging groove 10 (FIG. 4) of the ends 7 and 8 (FIG. 4).
- the unitary frame assembly 1 is illustrated in FIG. 2 in unfolded form.
- the unitary frame assembly 1 includes solid ends 7 and 8 and retaining screens 4 and 6.
- the unitary frame assembly 1, as illustrated in the present embodiment, is a modification of a sheet of expanded metal wherein an expanded metal producing machine (not shown) has expanded only selected portions of a sheet of metal leaving other selected portions as solid metal. By selectively expanding only specific sections of the metal sheet and leaving other selected portions solid, a filter frame assembly having front and back retaining screens 4 and 6 with ends 7 and 8 is produced.
- the screens 4 and 6, and the ends 7 and 8 are constructed so that when bent at the junctions of the screens 4 and 6 with the ends 7 and 8, a box-like configuration is the result.
- FIG. 3 illustrates the unitary frame assembly 1 in a position wherein the end 7 has been bent upwards at its juncture with screen 6 and end 8 has been bent upwards at its juncture with screen 6.
- Filter media 3 which advantageously can be of fiberglas and adapted to fit within the confines of the unitary frame assembly 1 when in a box-like configuration, is shown in place in the frame assembly 1 prior to the bending in a sidewards direction of screen 4 at its juncture with end 8.
- FIG. 4 further illustrates the engagement of the detachable sides 2 and 11 with frame assembly 1.
- Sides 2 and 11 are adapted to fit the frame assembly 1 and latch members 9 and grooves 10, as mentioned previously, are provided as the means for engaging and disengaging the sides 2 and 1] from the ends 7 and 8.
- FIGS. 5 and 6 of the drawings illustrate another preferred unitary frame assembly 1 of the present invention.
- FIG. 5 illustrates the unitary frame assembly 1 in unfolded form.
- the unitary frame assembly 1 includes solid ends 7 and 8 and retaining screen 4 and 6.
- Screen 6 is further provided with extending sides 12.
- FIG. 6 illustrates the unitary frame assembly 1 of FIG. 5 in a partially folded position wherein end 8 has been bent upwards at its juncture with screen 6, and extending sides 12 have been bent upwards at their juncture with screen 6.
- Filter media 3 adapted to fit within the confines of the unitary frame assembly 1 when in a box-like configuration, is shown in place in the frame assembly 1 prior to the bending in a sidewards direction of screen 4 at its juncture with end 8.
- the free edges of screen 4 are adapted to mate with the free edges of extending sides 12 and end 7 (not shown).
- Detachable sides 2 and 11 may be added to engage with frame as sembly 1 to give added support and rigidity to the sides.
- sheet metal is fed from roll 21 onto endless conveyor 22.
- Sheet metal from roll 21 is fed by conveyor 22 and guide rolls 23 to a metal expanding machine 24.
- Expanding die 26 is provided in machine 24 for expanding the metal. Further, expanding die 26 is set to raise at specifically set intervals so that at selected spacings on the sheet metal, the metal is left in tact as it passes under the die 26.
- Expanded metal in the metal expanding machine 24 is then conveyed to a slitter 27 wherein the expanded metal is slit into sections of selected lengths.
- the expanded metal sections are then passed to a first forming machine 29.
- Guide rolls 28 are provided to guide the expanded metal sections into the machine 29 wherein upwardly extending ram 31, downwardly extending ram 32 and upwardly extending ram 33 form the expanding metal section into a semi-formed unitary frame I assembly.
- the semi-formed assembly is then transferred to endless conveyor 38 where it is conveyed to filter media adding means 34 wherein filter media is added to the semi-formed unitary frame assembly.
- the assembly containing the filter media is then conveyed to a second forming machine 36 wherein horizontally extending ram 37 urges the vertically extending top section of the frame assembly into a horizontal position thereby completing the formation of a box-like frame with filter media confined therein.
- FIG. 8 illustrates the addition of detachable sides to the filter product of FIG. 7 by transferring the filter product of FIG. 7 to endless conveyor 39 which in turn conveys the product to horizontally extending capping means 41 wherein detachable sides are added to the product.
- the unitary frame assembly 1 may be fabricated by modifying expanded metal as illustrated, as well as plastics and similar materials.
- Latch member 9, illustrated as a tongue in the aforementioned example, may be any means for engaging sides 2 and 11, such as, groove 10, with the assembly 1.
- latching means may be provided for on the unitary frame assembly 1 instead of the sides 2 and 11 with a latch receiving means on the sides, without departing from the scope of the invention.
- a method of making a fluid treating filter comprising the steps of: passing a sheet of metal through a means for expanding a selected portion of said sheet of metal; cutting said sheet to a desired configuration; adding a selected quantity of filter media to said cut sheet; and forming said sheet into a unitarily constructed box-like configuration, the selected expanded portions of said sheet being positioned as a back and front support for said filter media and the nonexpanded portion of said sheet being positioned as end walls for said filter media with a leading edge of said sheet abutting a trailing edge of said sheet.
- a method of claim 1 including the step of adding side walls to said box-like configuration.
- a method of making a fluid treating filter comprising the steps of: passing a sheet of metal through a means for expanding a selected portion of said sheet of metal; cutting said sheet to a configuration having two expanded sections and two solid sections, one of said solid sections being disposed between said expanded sections; forming said sheet into a unitarily constructed topless box-like configuration whereby one expanded section is a bottom, said solid sections are end walls, and the other expanded section is an extension of one of the end walls; adding a selected quantity of filter media to said formed sheet; and, forming a top for the box-like configuration whereby said expanded section which is an extension of one of the end walls is forced intqa horizontal position to form the top with a leading edge of said sheet abutting a trailing edge of said sheet.
- a method of claim 3 including the step of adding side walls to said box-like configuration.
Abstract
Description
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US31436872A | 1972-12-12 | 1972-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3793692A true US3793692A (en) | 1974-02-26 |
Family
ID=23219671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00314368A Expired - Lifetime US3793692A (en) | 1972-12-12 | 1972-12-12 | Fluid treating filter |
Country Status (1)
Country | Link |
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US (1) | US3793692A (en) |
Cited By (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD244691S (en) * | 1974-09-27 | 1977-06-14 | Terrence Keith Morrison | Combined filter and panel for evaporative air-conditioner |
US4119019A (en) * | 1976-01-29 | 1978-10-10 | Reid William P | Water replenishing device for coffee makers |
US4330921A (en) * | 1978-09-21 | 1982-05-25 | White Jr Olin N | Insulated wall sections and methods of and apparatus for prefabricating the same |
US4470834A (en) * | 1982-12-02 | 1984-09-11 | Grabber Enterprises | Air filter |
US4567630A (en) * | 1981-03-10 | 1986-02-04 | Babcock-Hitachi Kabushiki Kaisha | Process of continuously producing plate-shaped catalyst and system therefor |
US4671943A (en) * | 1984-04-30 | 1987-06-09 | Kimberly-Clark Corporation | Sterilization and storage container |
US4839623A (en) * | 1986-12-01 | 1989-06-13 | Schonstedt Instrument Company | Magnetic core blanks of magnetically permeable sheet material |
US5099954A (en) * | 1989-11-15 | 1992-03-31 | Aisin Aw Co., Ltd. | Oil strainer device of an automatic transmission |
USD377656S (en) * | 1996-01-04 | 1997-01-28 | Environmental Procedures, Inc. | Screen |
US5598930A (en) * | 1995-07-20 | 1997-02-04 | Advanced Wirecloth, Inc. | Shale shaker screen |
DE19624523A1 (en) * | 1996-06-20 | 1998-01-02 | Mann & Hummel Filter | filter |
US5733350A (en) * | 1996-08-13 | 1998-03-31 | Purafil, Inc. | Container for solid filtration media and filtration system utilizing same |
US5840094A (en) * | 1996-07-31 | 1998-11-24 | Donaldson Company, Inc. | Air filter element; assembly; and, method |
US5971159A (en) * | 1993-04-30 | 1999-10-26 | Tuboscope I/P, Inc. | Screen assembly for a vibratory separator |
USD425531S (en) * | 1999-03-29 | 2000-05-23 | Tuboscope I/P, Inc. | Screen |
US6152307A (en) * | 1993-04-30 | 2000-11-28 | Tuboscope I/P, Inc. | Vibratory separator screens |
US6164457A (en) * | 1998-05-14 | 2000-12-26 | Firma Carl Freudenberg | Filter cartridge having a filter element inserted in a flexurally rigid frame |
US6267247B1 (en) | 1993-04-30 | 2001-07-31 | Tuboscope I/P, Inc. | Vibratory separator screen |
US6269953B1 (en) | 1993-04-30 | 2001-08-07 | Tuboscope I/P, Inc. | Vibratory separator screen assemblies |
US6283302B1 (en) * | 1993-08-12 | 2001-09-04 | Tuboscope I/P, Inc. | Unibody screen structure |
US6290068B1 (en) | 1993-04-30 | 2001-09-18 | Tuboscope I/P, Inc. | Shaker screens and methods of use |
US6325216B1 (en) | 1993-04-30 | 2001-12-04 | Tuboscope I/P, Inc. | Screen apparatus for vibratory separator |
US6371302B1 (en) | 1993-04-30 | 2002-04-16 | Tuboscope I/P, Inc. | Vibratory separator screens |
US6401934B1 (en) | 1993-04-30 | 2002-06-11 | Tuboscope I/P, Inc. | Ramped screen & vibratory separator system |
US6443310B1 (en) | 1993-04-30 | 2002-09-03 | Varco I/P, Inc. | Seal screen structure |
US6450345B1 (en) | 1993-04-30 | 2002-09-17 | Varco I/P, Inc. | Glue pattern screens and methods of production |
US6454099B1 (en) | 1993-04-30 | 2002-09-24 | Varco I/P, Inc | Vibrator separator screens |
US20030010437A1 (en) * | 1998-10-30 | 2003-01-16 | Adams Thomas C. | Screens for vibratory separators |
US20030042179A1 (en) * | 1998-10-30 | 2003-03-06 | Adams Thomas C. | Vibratory separator screens |
US6565698B1 (en) | 1993-04-30 | 2003-05-20 | Varco I/P, Inc. | Method for making vibratory separator screens |
US6607080B2 (en) | 1993-04-30 | 2003-08-19 | Varco I/P, Inc. | Screen assembly for vibratory separators |
US6623540B2 (en) * | 2001-06-26 | 2003-09-23 | Robert L. Clayton | Filter apparatus for HVAC system |
US6629610B1 (en) | 1993-04-30 | 2003-10-07 | Tuboscope I/P, Inc. | Screen with ramps for vibratory separator system |
US6669985B2 (en) | 1998-10-30 | 2003-12-30 | Varco I/P, Inc. | Methods for making glued shale shaker screens |
US20040007508A1 (en) * | 1999-12-04 | 2004-01-15 | Schulte David L. | Screen assembly for vibratory separator |
US6722504B2 (en) | 1993-04-30 | 2004-04-20 | Varco I/P, Inc. | Vibratory separators and screens |
US6736270B2 (en) | 1998-10-30 | 2004-05-18 | Varco I/P, Inc. | Glued screens for shale shakers |
US20040148915A1 (en) * | 2002-12-04 | 2004-08-05 | The True Blue Company | Foldable filter frame |
US20040251175A1 (en) * | 1998-10-30 | 2004-12-16 | Adams Thomas C. | Apparatuses and methods for making glued screen assemblies |
US20050000865A1 (en) * | 1998-10-30 | 2005-01-06 | Schulte David L. | Screen assemblies and vibratory separators |
US20050103689A1 (en) * | 2001-10-19 | 2005-05-19 | Schulte David L.Jr. | Sealing screen assemblies and vibratory separators |
US20050224398A1 (en) * | 2001-10-19 | 2005-10-13 | Largent David W | Vibratory separators and sealing screens |
US20060064925A1 (en) * | 2004-09-24 | 2006-03-30 | Mary Morgan | Pest repellant supporting rack system |
US20070251114A1 (en) * | 2006-04-17 | 2007-11-01 | Lg Electronics Inc. | Dryer |
US20080006568A1 (en) * | 2006-06-13 | 2008-01-10 | Moody Gary L | Grate cover apparatus and method |
US20090094952A1 (en) * | 2007-10-12 | 2009-04-16 | Jim Goode | Filter elements for circulating air systems |
US20090183477A1 (en) * | 2008-01-23 | 2009-07-23 | Workman Roger L | Air filter |
US8679328B2 (en) * | 2012-04-10 | 2014-03-25 | Frank Hebert | Floor drain cover |
US8685129B2 (en) | 2011-06-14 | 2014-04-01 | 3M Innovative Properties Company | Framed air filter and method of making |
US8702829B2 (en) | 2012-06-07 | 2014-04-22 | 3M Innovative Properties Company | Framed air filter with offset slot, and method of making |
US9266749B1 (en) * | 2013-09-04 | 2016-02-23 | Norman B. Rainer | Assembly for treating flowing water |
US9278869B1 (en) * | 2013-09-04 | 2016-03-08 | Norman B. Rainer | Assembly for treating flowing water |
US9962640B2 (en) * | 2014-03-24 | 2018-05-08 | 3M Innovative Properties Company | Framed air filter with integrated nestable joint |
USD877876S1 (en) * | 2018-09-07 | 2020-03-10 | 3M Innovative Properties Company | Three dimensional filter frame |
EP2329873B1 (en) * | 2009-06-04 | 2020-09-02 | Nitto Denko Corporation | A filter support |
US10773197B1 (en) * | 2019-02-06 | 2020-09-15 | Joshua Bishop | Air purification system |
USD896943S1 (en) * | 2017-12-18 | 2020-09-22 | 3M Innovative Properties Company | Three dimensional filter frame |
USD939681S1 (en) * | 2021-01-04 | 2021-12-28 | Xuechun Zheng | Frame for air cleaner filter element |
US11819792B2 (en) | 2014-11-14 | 2023-11-21 | Columbus Industries, Inc. | Bidirectional airflow filter |
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Publication number | Priority date | Publication date | Assignee | Title |
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US2138874A (en) * | 1936-03-05 | 1938-12-06 | Owens Illinois Glass Co | Filter unit |
US2597927A (en) * | 1950-03-29 | 1952-05-27 | Wingfoot Corp | Rubber hydrochloride air filter |
US2850269A (en) * | 1956-10-11 | 1958-09-02 | Hoy R Bohanon | Cooling pad hanger systems |
US2989145A (en) * | 1957-12-20 | 1961-06-20 | Metal Textile Corp | Expanded sheet material |
US3429434A (en) * | 1966-11-10 | 1969-02-25 | Packaging Corp America | Package and method of forming same |
US3724671A (en) * | 1971-02-04 | 1973-04-03 | American Air Filter Co | Fluid treating filter |
-
1972
- 1972-12-12 US US00314368A patent/US3793692A/en not_active Expired - Lifetime
Patent Citations (6)
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---|---|---|---|---|
US2138874A (en) * | 1936-03-05 | 1938-12-06 | Owens Illinois Glass Co | Filter unit |
US2597927A (en) * | 1950-03-29 | 1952-05-27 | Wingfoot Corp | Rubber hydrochloride air filter |
US2850269A (en) * | 1956-10-11 | 1958-09-02 | Hoy R Bohanon | Cooling pad hanger systems |
US2989145A (en) * | 1957-12-20 | 1961-06-20 | Metal Textile Corp | Expanded sheet material |
US3429434A (en) * | 1966-11-10 | 1969-02-25 | Packaging Corp America | Package and method of forming same |
US3724671A (en) * | 1971-02-04 | 1973-04-03 | American Air Filter Co | Fluid treating filter |
Cited By (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD244691S (en) * | 1974-09-27 | 1977-06-14 | Terrence Keith Morrison | Combined filter and panel for evaporative air-conditioner |
US4119019A (en) * | 1976-01-29 | 1978-10-10 | Reid William P | Water replenishing device for coffee makers |
US4330921A (en) * | 1978-09-21 | 1982-05-25 | White Jr Olin N | Insulated wall sections and methods of and apparatus for prefabricating the same |
US4567630A (en) * | 1981-03-10 | 1986-02-04 | Babcock-Hitachi Kabushiki Kaisha | Process of continuously producing plate-shaped catalyst and system therefor |
US4470834A (en) * | 1982-12-02 | 1984-09-11 | Grabber Enterprises | Air filter |
US4671943A (en) * | 1984-04-30 | 1987-06-09 | Kimberly-Clark Corporation | Sterilization and storage container |
US4839623A (en) * | 1986-12-01 | 1989-06-13 | Schonstedt Instrument Company | Magnetic core blanks of magnetically permeable sheet material |
US5099954A (en) * | 1989-11-15 | 1992-03-31 | Aisin Aw Co., Ltd. | Oil strainer device of an automatic transmission |
US6629610B1 (en) | 1993-04-30 | 2003-10-07 | Tuboscope I/P, Inc. | Screen with ramps for vibratory separator system |
US6371302B1 (en) | 1993-04-30 | 2002-04-16 | Tuboscope I/P, Inc. | Vibratory separator screens |
US20050236305A1 (en) * | 1993-04-30 | 2005-10-27 | Schulte David L Jr | Vibratory separators and screens for them |
US6892888B2 (en) * | 1993-04-30 | 2005-05-17 | Varco I/P, Inc. | Screen with unibody structure |
US6032806A (en) * | 1993-04-30 | 2000-03-07 | Tuboscope I/P, Inc. | Screen apparatus for vibratory separator |
US5971159A (en) * | 1993-04-30 | 1999-10-26 | Tuboscope I/P, Inc. | Screen assembly for a vibratory separator |
US6607080B2 (en) | 1993-04-30 | 2003-08-19 | Varco I/P, Inc. | Screen assembly for vibratory separators |
US6722504B2 (en) | 1993-04-30 | 2004-04-20 | Varco I/P, Inc. | Vibratory separators and screens |
US6565698B1 (en) | 1993-04-30 | 2003-05-20 | Varco I/P, Inc. | Method for making vibratory separator screens |
US6152307A (en) * | 1993-04-30 | 2000-11-28 | Tuboscope I/P, Inc. | Vibratory separator screens |
US6530483B2 (en) | 1993-04-30 | 2003-03-11 | Varco I/P, Inc. | Unibody structure for screen assembly |
US6267247B1 (en) | 1993-04-30 | 2001-07-31 | Tuboscope I/P, Inc. | Vibratory separator screen |
US6269953B1 (en) | 1993-04-30 | 2001-08-07 | Tuboscope I/P, Inc. | Vibratory separator screen assemblies |
US20030038061A1 (en) * | 1993-04-30 | 2003-02-27 | Schulte David L. | Screen with unibody structure |
US6290068B1 (en) | 1993-04-30 | 2001-09-18 | Tuboscope I/P, Inc. | Shaker screens and methods of use |
US6302276B1 (en) | 1993-04-30 | 2001-10-16 | Tuboscope I/P, Inc. | Screen support strip for use in vibratory screening apparatus |
US6325216B1 (en) | 1993-04-30 | 2001-12-04 | Tuboscope I/P, Inc. | Screen apparatus for vibratory separator |
US6454099B1 (en) | 1993-04-30 | 2002-09-24 | Varco I/P, Inc | Vibrator separator screens |
US6401934B1 (en) | 1993-04-30 | 2002-06-11 | Tuboscope I/P, Inc. | Ramped screen & vibratory separator system |
US6443310B1 (en) | 1993-04-30 | 2002-09-03 | Varco I/P, Inc. | Seal screen structure |
US6450345B1 (en) | 1993-04-30 | 2002-09-17 | Varco I/P, Inc. | Glue pattern screens and methods of production |
US6283302B1 (en) * | 1993-08-12 | 2001-09-04 | Tuboscope I/P, Inc. | Unibody screen structure |
US5598930A (en) * | 1995-07-20 | 1997-02-04 | Advanced Wirecloth, Inc. | Shale shaker screen |
USD377656S (en) * | 1996-01-04 | 1997-01-28 | Environmental Procedures, Inc. | Screen |
US5988397A (en) * | 1996-02-12 | 1999-11-23 | Tuboscope I/P, Inc. | Screen for vibratory separator |
DE19624523A1 (en) * | 1996-06-20 | 1998-01-02 | Mann & Hummel Filter | filter |
US5840094A (en) * | 1996-07-31 | 1998-11-24 | Donaldson Company, Inc. | Air filter element; assembly; and, method |
US5733350A (en) * | 1996-08-13 | 1998-03-31 | Purafil, Inc. | Container for solid filtration media and filtration system utilizing same |
US6164457A (en) * | 1998-05-14 | 2000-12-26 | Firma Carl Freudenberg | Filter cartridge having a filter element inserted in a flexurally rigid frame |
US20030042179A1 (en) * | 1998-10-30 | 2003-03-06 | Adams Thomas C. | Vibratory separator screens |
US6669985B2 (en) | 1998-10-30 | 2003-12-30 | Varco I/P, Inc. | Methods for making glued shale shaker screens |
US6932883B2 (en) | 1998-10-30 | 2005-08-23 | Varco I/P, Inc. | Screens for vibratory separators |
US20040251175A1 (en) * | 1998-10-30 | 2004-12-16 | Adams Thomas C. | Apparatuses and methods for making glued screen assemblies |
US6736270B2 (en) | 1998-10-30 | 2004-05-18 | Varco I/P, Inc. | Glued screens for shale shakers |
US20030010437A1 (en) * | 1998-10-30 | 2003-01-16 | Adams Thomas C. | Screens for vibratory separators |
US20050000865A1 (en) * | 1998-10-30 | 2005-01-06 | Schulte David L. | Screen assemblies and vibratory separators |
USD425531S (en) * | 1999-03-29 | 2000-05-23 | Tuboscope I/P, Inc. | Screen |
US20040007508A1 (en) * | 1999-12-04 | 2004-01-15 | Schulte David L. | Screen assembly for vibratory separator |
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AS | Assignment |
Owner name: CITICORP NORTH AMERICA, INC., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION, A MN CORP.;REEL/FRAME:005013/0592 Effective date: 19881117 |
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Owner name: SNYDERGENERAL CORPORATION, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIS-CHALMERS CORPORATION;REEL/FRAME:005091/0514 Effective date: 19881117 Owner name: ALLIS-CHALMERS CORPORATION, 1126 S. 70TH STR., W. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN AIR FILTER COMPANY, INC.;REEL/FRAME:005063/0240 Effective date: 19881117 |
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Owner name: SNYDERGENERAL CORPORATION A CORP. OF DELAWARE Free format text: RELEASE BY SECOND PARTY OF A SECURITY AGREEMENT RECORDED AT REEL 5013 FRAME 592.;ASSIGNOR:CITICORP NORTH AMERICA, INC. A CORP. OF DELAWARE;REEL/FRAME:006104/0270 Effective date: 19920326 |