US3707078A - Fail-safe liquid oxygen to gaseous oxygen conversion system - Google Patents

Fail-safe liquid oxygen to gaseous oxygen conversion system Download PDF

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Publication number
US3707078A
US3707078A US3707078DA US3707078A US 3707078 A US3707078 A US 3707078A US 3707078D A US3707078D A US 3707078DA US 3707078 A US3707078 A US 3707078A
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circuit
build
solenoid
liquid
regulator
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Robert L Cramer
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Northrop Grumman Guidance and Electronics Co Inc
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Bendix Corp
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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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/03—Gases in liquid phase, e.g. cryogenic liquids
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • 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
    • F17C2205/0352—Pipes
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0636—Flow or movement of content
    • 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
    • Y10S128/00—Surgery
    • Y10S128/27—Cryogenic

Definitions

  • I ABSTRACT A fail-safe system for supplying oxygen to a breathing regulator operated upon demand by a recipient.
  • a liquid oxygen storage vessel has an outlet'port con.- nected to its inlet port through a build-up circuit. As the liquid oxygen flows through the build-up circuit it is converted from a liquid to a gas through the effect of thermal energy. As a result of the liquid to gas conversion, a high internal pressure is created in the build-up circuit.
  • a pressure responsive member placed in the build-up circuit will interrupt the flow when the pressure reaches a predetermined value during the active operation of the system.
  • a supply circuit connected to the build-up circuit transmits the oxygen as a gas to operate the breathing regulator.
  • a first solenoid in response to an electrical signal controls a flow control valve connected in the build-up circuit.
  • An operational switch on the panel regulator supplies the electrical signal to the first solenoid, opening the control valve.
  • a latching shaft controlled by a second solenoid engages a notch on the plunger of the flow control valve to hold the valve open. The flow control valve will remain open until an operational closing signal is communicated to the second solenoid.
  • the second solenoid Upon receiving the signal, the second solenoid moves the latching shaft away from the notch permitting a resilient member to close the fluid flow outlet port to the build-up circuit.
  • a by-pass valve is utilized to provide an escape to the atmosphere.
  • a liquid to gaseous oxygen conversion system having a flow control valve that is responsive to the ON-OFF toggle of a demand breathing regulator.
  • the flow control valve is neither normally opened nor closed, but will remain in its intended position until an overt act on the part of the operator sends a signal indicating a desired change.
  • a first solenoid of the flow control valve has an internal plunger resiliently biased toward an outlet port controlling flow through the build-up circuit.
  • the toggle of the breathing rejector When the toggle of the breathing rejector is switched to the OFF position, the second solenoid is energized pulling the shaft out of engagement and allowing the plunger to be seated, preventing fluid flow through the outlet port.
  • Activation of the demand breathing regulator by an operator will insure operation conversion of the system until a subsequent deactivation of the breathing regulator, providing a fail-safe system uneffective by outside focus.
  • the flow control valve of the converter is provided with means for manual activation which will override the resiliently biased first solenoid, if power is not provided or unavailable.
  • the drawing shows a sectional view of a liquid oxygen to gaseous oxygen conversion system connected to a breathing regulator with an enlarged sectional view of a flow control valve operationally connected to the ON-OFF toggle of the regulator.
  • the liquid oxygen to gaseous oxygen conversion system 10 shown in the drawing includes a double walled storage vessel 12 having an inlet port 14 and an outlet port 16.
  • the inlet port 14 is externally connected to the outlet port through a build-up circuit 20.
  • the inlet port 14 is connected through a fill circuit 22 to a liquid oxygen supply adapter 24 and to connector means 26 in a supply circuit 28 going to a breathing regulator device 30.
  • a pressure responsive interrupting valve 32 is located in the build-up circuit 20 downstream from a supply circuit connection 34. The interrupting valve 32 will open and close as the pressure in the build-up circuit 20 is reduced by withdrawal of gaseous oxygen through the breathing regulator 30.
  • Opening and closing the interrupting valve will assure that the pressure of the gaseous oxygen transmitted to the regulator 30 will remain within a predetermined pressure range.
  • Downstream from the interrupting valve 32 is a flow control valve means 36 having an operational signal transmitting line 38 connected to the ON-OFF toggle 40 of the breathing regulator 30.
  • the flow control valve means 36 upon receiving an operational signal when the toggle 40 is moved to the ON position, will permit fluid to begin to flow as a liquid through port 14.
  • thermal energy converts the liquid to a gas resulting in an increase in internal pressure.
  • the pressure in the build-up circuit will increase until the interrupting valve 32 becomes operational.
  • the toggle 40 remains in the ON position, the fluid will flow through the control means 36 thereby providing the regulator 30 with pressurized gaseous oxygen.
  • control means 36 Upon moving the toggle 40 to the OFF position, control means 36 will stop the flow in the build-up circuit 20. However, some fluid will remain in the build-up circuit 20 between the flow control valve means 36 and the gaseous outlet 16 of the storage vessel. This trapped liquid oxygen will continue to be converted to gaseous oxygen and build up a head within the build-up circuit 20 and the storage vessel 12.
  • By-pass means 42 an integral part of the oxygen supply adapter 24, contains a pressure opening ball valve 44 which permits excessive pressure to escape harmlessly into the atmosphere. Since liquid oxygen will continue to .be converted to gaseous oxygenthrough the thermal energy penetrating the storage vessel 12, the ball valve 44 will be operational as long as the fail-safe system is on standby.
  • individual elements of the system could be constructed as follows to provide a fail-safe operational liquid oxygen to gaseous oxygen conversion system.
  • the liquid storage vessel 12 includes an inner container 46 and an outer container 48 separated by an insulating member 50.
  • a capacitance probe 52 of a type described in US. Pat. No. 2,848,666, is held against the interior wall of the inner container 46 by a resiliently biased cap 56 adjacent the inlet port 14.
  • the electrical leads 58 of the capacitance probe 52 are carried through the gaseous port 16 and out of the storage vesse] 12 through a hermetic opening 60 in the build-up circuit to an electrical gauge (not shown) for indicating the amount of liquid in the storage vessel 12.
  • the supply adapter 24 includes a housing 62 having a supply chamber 64 with a spring controlled closure cap 66 overlying an opening 69 to the fill circuit 22.
  • a shaft 68 retained in a bearing wall 71 of the housing 62 has a bevelled face 70 extending into a by-pass chamber 74.
  • the bevelled face 70 is urged against an annular seat 76 surrounding an opening 78 to the atmosphere.
  • An internal passage 80 from the opening 78 is connected to the by-pass valve 44.
  • the interrupting valve 32 includes a housing 82 having a control chamber 83 containing a stem 84 with a face 86 on one end and a bellows member 88 on the other end.
  • a spring 90 is located inside the bellows member 88 and acts on the stem 84 in opposition to a closure spring 92.
  • a wall 94 'separates the inlet port 96 of the control chamber 83 from the outlet port 98. Without pressure in the control chamber 83, the bellows member 88 acts in conjunction'with spring 90 to unseat face 86 from the opening 100 in wall 94.
  • spring 90 aided by the force created by thepressure drop, will overcome spring 92 to again permit fluid to flow.
  • the flow control valve means 36 includes a housing 102 having a flow chamber with an inlet port 104 and an outlet port 106.
  • a wall 108 having a passage 111 is located adjacent the outlet port 106.
  • a plunger 110 with a beveled end 112 having a shoulder 114 for retaining one end of a resilient member or spring 1 16 is located in an axial line with passage 111 and is retained in a bearing wall 118.
  • the plunger 110 extends through the bearing wall 118 into a first solenoid 120.
  • the end 122 of the plunger 110 extending into the solenoid 120 has an annular notch 124 which receives the end of a holding shaft 126 when the solenoid 120 is energized and moves the plunger 110 away from passage 111.
  • second solenoid 128 surrounds shaft 126, with a resilient member 130 being caged between the end 132 of the solenoid and a shoulder 134 on the shaft to urge the shaft toward the notch 124.
  • a T-shaped cylindrical shaft 136 Centrally located on the end of the plunger 110 is a T-shaped cylindrical shaft 136 which is sealingly retained in wall 138 of the housing 102.
  • a spring 140 rests against the-wall 138 and acts on top portion 142 of the T-shaped cylindrical shaft 136 to aid resilient member 116 in sealing bevelled end 112 against wall 108 surrounding passage 111 to prevent fluid flow therethrough.
  • a projection solenoid 128 when the toggle 40 is in the OFF position 164 are not interchanged.
  • a supply source is mated with adapter 24. in connecting the supply source, the shaft 68 is pushed to the right compressing spring and thereby communicating outlet 16 with atmosphere via conduit 220, by-pass chamber 74 and opening 78.
  • the supply liquid being under pressure unseats cap 66 and flows through fill circuit 22 into the fluid inlet 14.
  • Connector means 26 includes a check valve (not shown) which prevents flow at this time to the regulator 30, in addition, since the toggle 40 is in the OFF position 164, flow through build-up circuit 20 is preventedby the plunger 110 being resiliently held against the housing surrounding passage 1 1 1.
  • the amount of liquid in the storage vessel is monitered by the capacitive probe 52 and when sufficiently full, the storage source is disconnected from the supply adapter 24. Upon disconnecting the supply source, resilient member 75 will seat bevelled face 70 against seat 76 and resilient member 67 will seat cap 66 on opening 69 to seal the liquid in the storage vessel 12.
  • T-shaped cylindrical shaft 136 is pushed manually until spring loaded shaft 126 engages notch 124. Fluid will now be permitted to flow in build-up circuit 20 until the pressure acting on bellows 88 causes it to collapse thereby permitting spring 92 to seat face 86 and close opening 100. As long as the pressure at the junction 34 in the buildup circuit remains constant the pressures across the interrupting valve 32 will prevent further flow in the build-up circuit 20. With any further pressure build-up in circuit 20 fluid is allowed to escape through by-pass valve means 42 to prevent damage to the system. To release the plunger 110 from its held open position, projection 144 is pulled to overcome resilient member 130 thereby disengaging the shaft 126 from notch 124. Upon disengaging the shaft from the notch, resilient members 116 and 140 will again seat plunger 110 on the housing around passage 111 to prevent fluid flow from the inlet port 104 to the outlet port 106.
  • the check valve contained therein is opened permitting liquid oxygen convertible to gaseous oxygen under pressure to be supplied to the breathing regulator device 30.
  • the intensity of the pressure varies with the pressure in the buildup circuit created by thermal energy in the liquid to oxygen conversion. lf fluid flow in the build-up circuit has been interrupted or prevented prior to connecting the breathing regulator device 30, then the initial gaseous oxygen supplied will be at a minimal pressure.
  • toggle switch 40 When the operator desires to place the breathing regulator device in operation, toggle switch 40 is placed in the ON position 162. In the ON position 162 electrical energy is transmitted through leads 154 156 to the first solenoid 120.
  • the plunger 110 becomes magnetized and the mutual action of the field in the solenoid on the poles created of the ends 112 and 122 of the plunger 110 causethe plunger to move within the solenoid. This moving force becomes zero only when the magnetic centers of the plunger 110 and the solenoid 120 coincide.
  • the maximum uniform pull to overcome the resiliently biasingclosing members 116 and 140 occurs when the end of the plunger 122 is located within the bore 123 of the solenoid 120.
  • the interrupting valve means 32 When the pressure in the build-up circuit reaches a predetermined value, the interrupting valve means 32 will close. The pressure across the seat face 86 of the interrupting valve means 32 will prevent flow in the build-up line until the differential is sufficient to overcome the resilient members 92. Through this interrupting valve means, the pressure of the oxygen supplied to the breathing regulator device 30 will remain within a predetermined range.
  • the operator switches toggle 40 to the OFF position 164 at the end of an active period to stop the flow of gaseous oxygen through the breathing regulator device 30. Simultaneously with the toggle 40 in the OFF position, electrical energy is transmitted through leads 158 and to the second solenoid 128 to energize the coil 133. When coil 133 is energized, a magnetic flux will occur pulling shaft 126 out of contact with the notch 124 thereby permitting the plunger to be resiliently closed and stop fluid flow in the build-up circuit 20. After a predetermined period of time, the electrical energy which is supplied the coil 133 of the second solenoid, is terminated and the flow control means inactivated.
  • liquid storage vessel having a liquid port and a gaseous port
  • a pressure build-up circuit connecting said liquid port to said gaseous port, the liquid in said storage vessel being converted from a liquid to a gas by thermal energy upon flowing from said liquid port to said gaseous port through said build-up circuit;
  • a supply circuit with a connection connected to said build-up circuit and said regulator, said supply circuit converting said liquid to a gas, said supply circuit delivering said gas to said regulator at a rate necessary to maintain a physiological level for said operatori pressure responsive means located in said build-up circuit downstream from said supply circuit connection for interrupting the flow of said liquid in said build-up circuit when the fluid pressure therein caused by the liquid to gas conversion reaches a predetermined value, said pressure responsive means thereby correspondingly limiting the pressure of the gas transmitted to said regulator through said supply circuit;
  • control means located in said build-up circuit downstream from said pressure responsive means, said control means being latched to an opened position for permitting fluid flow in said build-up circuit to create a fluid pressure therein in response to an electrical operational signal being communicated from said regulator.
  • control means includes:
  • a housing having a chamber located therein with an inlet port connected to said pressure responsive means and an outlet port connected to said pressure build-up circuit leading to said gaseous port of the storage vessel;
  • a plunger retained in a bearing wall in said chamber, said plunger having a valve face on'one end and a notch on the other end; first resilient means secured to said plunger for urging said valve face into sealing engagement with a seat of said housing to prevent fluid flow from the inlet port to the outlet port; and
  • first solenoid means surrounding said plunger having an electrical circuit connected to an activation section of an operational switching means for said regulator, said first solenoid moving said face away from said seat upon energization by said electrical operational signal.
  • control means further includes:
  • second resilient means secured to said shaft for urging one end of said shaft toward said plunger, said one end of the shaft engaging the notch end of said plunger to hold the valve face away from the seat upon deactivation of said first solenoid means.
  • control means further includes:
  • control means further includes:
  • said control means further includes:
  • release means secured to said shaft for permitting manual disengagement of said shaft with said notch to allow the valve face of the plunger to seat and prevent fluid flow in said build-up circuit through said chamber.
  • plug-in means for connecting the regulator with the control means having a lock pin which snaps into a slot to assure proper alignment of the circuits and the corresponding solenoids.
  • connector means for opening a check valve upon joining said supply circuit with said build-up circuit to permit said gas to freely flow to the regulator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Magnetically Actuated Valves (AREA)
US3707078D 1971-02-10 1971-02-10 Fail-safe liquid oxygen to gaseous oxygen conversion system Expired - Lifetime US3707078A (en)

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US11431371A 1971-02-10 1971-02-10

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US (1) US3707078A (cg-RX-API-DMAC10.html)
CA (1) CA930660A (cg-RX-API-DMAC10.html)
DE (1) DE2206333A1 (cg-RX-API-DMAC10.html)
FR (1) FR2124552B1 (cg-RX-API-DMAC10.html)
GB (1) GB1385931A (cg-RX-API-DMAC10.html)
IT (1) IT947432B (cg-RX-API-DMAC10.html)

Cited By (14)

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US3831594A (en) * 1973-03-05 1974-08-27 Us Navy Life support system
US4018582A (en) * 1976-03-29 1977-04-19 The Bendix Corporation Vent tube means for a cryogenic container
US4438729A (en) * 1980-03-31 1984-03-27 Halliburton Company Flameless nitrogen skid unit
US4947651A (en) * 1989-04-07 1990-08-14 Minnesota Valley Engineering, Inc. Pressure building circuit for a container for low temperature fluids
WO1995005557A1 (en) * 1993-08-19 1995-02-23 Kværner Moss Technology A.S A tower device in spherical tanks for the transport of liquid gas
US5558139A (en) * 1995-02-13 1996-09-24 Essex Cryogenics Of Missouri Liquid oxygen system
US5979440A (en) * 1997-06-16 1999-11-09 Sequal Technologies, Inc. Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator
US6012453A (en) * 1995-04-20 2000-01-11 Figgie Inernational Inc. Apparatus for withdrawal of liquid from a container and method
RU2241899C1 (ru) * 2003-02-27 2004-12-10 Божуков Валентин Михайлович Способ получения, хранения и расходования газообразного кислорода и кислородный аппарат открытого типа (его варианты)
US20080178610A1 (en) * 2007-01-30 2008-07-31 Douglas Whitcher Portable Liquid Oxygen Storage Unit
FR2950259A1 (fr) * 2009-09-23 2011-03-25 Air Liquide Procede de suivi d'un debit de gaz consomme par un patient.
CN102309802A (zh) * 2011-01-26 2012-01-11 德州学院 一种新型呼吸器
US20170030523A1 (en) * 2013-12-23 2017-02-02 Praxair Technology, Inc. Filling station for cryogenic refrigerant
US20170030522A1 (en) * 2013-12-23 2017-02-02 Praxair Technology, Inc. Filling station for cryogenic refrigerant

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US2593916A (en) * 1949-03-05 1952-04-22 Peff Peter Apparatus and method for transporting and dispensing liquefied gas
US2945354A (en) * 1957-03-18 1960-07-19 North American Aviation Inc Liquid oxygen conversion system
US2964919A (en) * 1958-07-07 1960-12-20 British Oxygen Co Ltd Converter system for liquefied gases
US3199303A (en) * 1963-05-09 1965-08-10 Union Carbide Corp Oxygen therapy system
US3232066A (en) * 1959-12-09 1966-02-01 Litton Systems Inc Gravitationless liquid oxygen handling system

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Publication number Priority date Publication date Assignee Title
GB854445A (en) * 1957-07-03 1960-11-16 Philip Leonard Spencer Converter for liquefied gases

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2593916A (en) * 1949-03-05 1952-04-22 Peff Peter Apparatus and method for transporting and dispensing liquefied gas
US2945354A (en) * 1957-03-18 1960-07-19 North American Aviation Inc Liquid oxygen conversion system
US2964919A (en) * 1958-07-07 1960-12-20 British Oxygen Co Ltd Converter system for liquefied gases
US3232066A (en) * 1959-12-09 1966-02-01 Litton Systems Inc Gravitationless liquid oxygen handling system
US3199303A (en) * 1963-05-09 1965-08-10 Union Carbide Corp Oxygen therapy system

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US3831594A (en) * 1973-03-05 1974-08-27 Us Navy Life support system
US4018582A (en) * 1976-03-29 1977-04-19 The Bendix Corporation Vent tube means for a cryogenic container
US5551242A (en) * 1980-03-31 1996-09-03 Halliburton Company Flameless nitrogen skid unit
US4438729A (en) * 1980-03-31 1984-03-27 Halliburton Company Flameless nitrogen skid unit
US4947651A (en) * 1989-04-07 1990-08-14 Minnesota Valley Engineering, Inc. Pressure building circuit for a container for low temperature fluids
AU615408B2 (en) * 1989-04-07 1991-09-26 Minnesota Valley Engineering, Inc. Pressure building circuit for a container for low temperature fluids
WO1995005557A1 (en) * 1993-08-19 1995-02-23 Kværner Moss Technology A.S A tower device in spherical tanks for the transport of liquid gas
US5819977A (en) * 1993-08-19 1998-10-13 Kvaerner Moss Technology A.S. Tower device in sperical tanks for the transport of liquid gas
US5558139A (en) * 1995-02-13 1996-09-24 Essex Cryogenics Of Missouri Liquid oxygen system
US6012453A (en) * 1995-04-20 2000-01-11 Figgie Inernational Inc. Apparatus for withdrawal of liquid from a container and method
US5979440A (en) * 1997-06-16 1999-11-09 Sequal Technologies, Inc. Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator
US6651653B1 (en) * 1997-06-16 2003-11-25 Sequal Technologies, Inc. Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator
US6681764B1 (en) * 1997-06-16 2004-01-27 Sequal Technologies, Inc. Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator
US6698423B1 (en) * 1997-06-16 2004-03-02 Sequal Technologies, Inc. Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator
USRE43398E1 (en) 1997-06-16 2012-05-22 Respironics, Inc. Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator
RU2241899C1 (ru) * 2003-02-27 2004-12-10 Божуков Валентин Михайлович Способ получения, хранения и расходования газообразного кислорода и кислородный аппарат открытого типа (его варианты)
WO2008094926A3 (en) * 2007-01-30 2008-10-23 Ric Investments Llc Portable liquid oxygen storage unit
US20080178610A1 (en) * 2007-01-30 2008-07-31 Douglas Whitcher Portable Liquid Oxygen Storage Unit
CN101594910B (zh) * 2007-01-30 2012-08-08 Ric投资有限责任公司 便携式液氧存储单元
AU2008210573B2 (en) * 2007-01-30 2013-01-10 Ric Investments, Llc Portable liquid oxygen storage unit
US8468839B2 (en) 2007-01-30 2013-06-25 Ric Investments, Llc Portable liquid oxygen storage unit
FR2950259A1 (fr) * 2009-09-23 2011-03-25 Air Liquide Procede de suivi d'un debit de gaz consomme par un patient.
EP2301612A2 (fr) 2009-09-23 2011-03-30 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé de suivi d'un débit de gaz consommé à partir d'un réservoir cryogénique
EP2301612A3 (fr) * 2009-09-23 2017-12-20 Cryopal Procédé de suivi d'un débit de gaz consommé à partir d'un réservoir cryogénique
CN102309802A (zh) * 2011-01-26 2012-01-11 德州学院 一种新型呼吸器
CN102309802B (zh) * 2011-01-26 2014-08-06 德州学院 一种呼吸器
US20170030523A1 (en) * 2013-12-23 2017-02-02 Praxair Technology, Inc. Filling station for cryogenic refrigerant
US20170030522A1 (en) * 2013-12-23 2017-02-02 Praxair Technology, Inc. Filling station for cryogenic refrigerant

Also Published As

Publication number Publication date
FR2124552B1 (cg-RX-API-DMAC10.html) 1975-10-24
IT947432B (it) 1973-05-21
CA930660A (en) 1973-07-24
FR2124552A1 (cg-RX-API-DMAC10.html) 1972-09-22
GB1385931A (en) 1975-03-05
DE2206333A1 (de) 1972-08-17

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