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 PDFInfo
- 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
- Authority
- US
- United States
- Prior art keywords
- opening
- locking members
- closure member
- members
- locking
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6938066A FR2067501A5 (enrdf_load_stackoverflow) | 1969-11-05 | 1969-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3667649A true US3667649A (en) | 1972-06-06 |
Family
ID=9042657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US86182A Expired - Lifetime US3667649A (en) | 1969-11-05 | 1970-11-02 | Closure device for sealing an opening in a wall of a pressurizable chamber |
Country Status (5)
Country | Link |
---|---|
US (1) | US3667649A (enrdf_load_stackoverflow) |
CH (1) | CH526739A (enrdf_load_stackoverflow) |
DE (1) | DE2054328A1 (enrdf_load_stackoverflow) |
FR (1) | FR2067501A5 (enrdf_load_stackoverflow) |
GB (1) | GB1301911A (enrdf_load_stackoverflow) |
Cited By (31)
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 (enrdf_load_stackoverflow) * | 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 (de) * | 2004-02-10 | 2005-11-15 | Natex Prozesstech Gmbh | Verriegelungseinrichtung zum festlegen eines deckels |
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 |
US20220205593A1 (en) * | 2020-12-31 | 2022-06-30 | Prototype Garage, LLC | Pressure vessel incorporating rapid, toolless assembly and disassembly |
US11413592B2 (en) * | 2020-09-10 | 2022-08-16 | Guangzhou Green And Health Biotech Co., Ltd. | Horizontal supercritical fluid foaming autoclave with internal stirring device |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3230457C2 (de) * | 1982-08-16 | 1984-09-20 | Skw Trostberg Ag, 8223 Trostberg | Abdichtung für einen Hochdruck-Behälter mit Innenverschluß |
GB2143923B (en) * | 1983-07-28 | 1987-09-30 | Taylor Woodrow Const Ltd | High pressure chambers |
DE3333153A1 (de) * | 1983-09-14 | 1985-03-28 | Alfred Teves Gmbh, 6000 Frankfurt | Spreizelement zur axialen lagesicherung |
GB2172956B (en) * | 1985-02-26 | 1989-06-14 | Peco Uk Limited | Closure |
AT397420B (de) * | 1991-03-01 | 1994-04-25 | Schoeller Bleckmann Stahlwerke | Verriegelungseinrichtung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE490788C (de) * | 1927-11-09 | 1930-02-10 | Maschb Scholz & Co | Gefaessschnellverschluss |
FR1017261A (fr) * | 1949-04-09 | 1952-12-05 | Montedison Spa | Fermeture pour récipients à pression |
US2670799A (en) * | 1950-10-20 | 1954-03-02 | Sun Oil Co | Collapsible pipe plug |
CA687708A (en) * | 1964-06-02 | W. Norton Harry | Closure means for pressure vessels | |
US3449860A (en) * | 1967-06-01 | 1969-06-17 | Robert L Franks Jr | Apparatus for closing openings |
-
1969
- 1969-11-05 FR FR6938066A patent/FR2067501A5/fr not_active Expired
-
1970
- 1970-10-26 GB GB5076870A patent/GB1301911A/en not_active Expired
- 1970-10-28 CH CH1593370A patent/CH526739A/fr not_active IP Right Cessation
- 1970-11-02 US US86182A patent/US3667649A/en not_active Expired - Lifetime
- 1970-11-04 DE DE19702054328 patent/DE2054328A1/de active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA687708A (en) * | 1964-06-02 | W. Norton Harry | Closure means for pressure vessels | |
DE490788C (de) * | 1927-11-09 | 1930-02-10 | Maschb Scholz & Co | Gefaessschnellverschluss |
FR1017261A (fr) * | 1949-04-09 | 1952-12-05 | Montedison Spa | Fermeture pour récipients à pression |
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 (51)
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 (enrdf_load_stackoverflow) * | 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 (de) * | 1991-10-10 | 1996-08-29 | Fissler Gmbh | Dampfdruckkochtopf |
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 (zh) * | 2001-06-20 | 2008-10-15 | 阿吾尔技术股份公司 | 压机 |
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 |
US20050161957A1 (en) * | 2002-07-02 | 2005-07-28 | Mcguire Douglas J. | Closure for a pressure vessel and method |
WO2004005771A1 (en) * | 2002-07-02 | 2004-01-15 | R & M Energy Systems, L.P. | Closure for a pressure vessel and method |
AT500172A1 (de) * | 2004-02-10 | 2005-11-15 | Natex Prozesstech Gmbh | Verriegelungseinrichtung zum festlegen eines deckels |
AT500172B1 (de) * | 2004-02-10 | 2006-03-15 | Natex Prozesstech Gmbh | Verriegelungseinrichtung zum festlegen eines deckels |
US20100176127A1 (en) * | 2006-02-01 | 2010-07-15 | Ilmer Yusupovich Khasanov | Fast acting gate |
US7913717B2 (en) * | 2006-02-01 | 2011-03-29 | Ilmer Yusupovich Khasanov | Fast acting gate |
US7665485B2 (en) * | 2006-04-03 | 2010-02-23 | Fulgosi S.R.L. | 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 |
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 |
US20090145904A1 (en) * | 2007-06-01 | 2009-06-11 | Guidry Jr Michael J | Closure for a vessel |
US8430260B2 (en) | 2007-06-01 | 2013-04-30 | Robbins & Myers Energy Systems L.P. | Closure for a vessel |
US8322556B2 (en) | 2007-06-01 | 2012-12-04 | Robbins & Myers Energy Systems L.P. | Closure for a vessel |
US8052006B2 (en) | 2007-06-01 | 2011-11-08 | Robbins & Myers Energy Systems L.P. | Closure for a vessel |
US20080296302A1 (en) * | 2007-06-01 | 2008-12-04 | Guidry Jr Michael J | Closure for a vessel |
US7896187B2 (en) | 2007-10-02 | 2011-03-01 | Sypris Technologies, Inc. | Locking ring actuator for a pressure retaining closure |
US20090084791A1 (en) * | 2007-10-02 | 2009-04-02 | Sypris Technologies, Inc. | Closure Having a Segmented Locking Ring |
US8251243B2 (en) | 2007-10-02 | 2012-08-28 | Sypris Technologies, Inc. | Closure having a segmented locking ring |
US20100175927A1 (en) * | 2009-01-09 | 2010-07-15 | Mike Zulak | Earth drilling reamer with replaceable blades |
US20130193142A1 (en) * | 2012-01-26 | 2013-08-01 | Halliburton Energy Services, Inc. | Safety Cap |
US9091347B2 (en) * | 2012-01-26 | 2015-07-28 | 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 |
US20220205593A1 (en) * | 2020-12-31 | 2022-06-30 | Prototype Garage, LLC | Pressure vessel incorporating rapid, toolless assembly and disassembly |
Also Published As
Publication number | Publication date |
---|---|
FR2067501A5 (enrdf_load_stackoverflow) | 1971-08-20 |
DE2054328A1 (de) | 1971-05-19 |
CH526739A (fr) | 1972-08-15 |
GB1301911A (enrdf_load_stackoverflow) | 1973-01-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NEYRPIC A CORP OF, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:B.V.S.;REEL/FRAME:003943/0838 Effective date: 19781227 Owner name: NEYRPIC A CORP OF FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DATE 12/27/78;ASSIGNOR:B.V.S.;REEL/FRAME:003943/0838 Effective date: 19781227 |