[go: up one dir, main page]

AU2001279527A1 - Miniaturized wearable oxygen concentrator - Google Patents

Miniaturized wearable oxygen concentrator

Info

Publication number
AU2001279527A1
AU2001279527A1 AU2001279527A AU7952701A AU2001279527A1 AU 2001279527 A1 AU2001279527 A1 AU 2001279527A1 AU 2001279527 A AU2001279527 A AU 2001279527A AU 7952701 A AU7952701 A AU 7952701A AU 2001279527 A1 AU2001279527 A1 AU 2001279527A1
Authority
AU
Australia
Prior art keywords
container
gas
oxygen concentrator
air
wearable oxygen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2001279527A
Inventor
John Lee Warren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wearair Oxygen Inc
Original Assignee
Wearair Oxygen Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wearair Oxygen Inc filed Critical Wearair Oxygen Inc
Publication of AU2001279527A1 publication Critical patent/AU2001279527A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • 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
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M16/101—Preparation of respiratory gases or vapours with O2 features or with parameter measurement using an oxygen concentrator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/12—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/102—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40003—Methods relating to valve switching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40007—Controlling pressure or temperature swing adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40007—Controlling pressure or temperature swing adsorption
    • B01D2259/40009—Controlling pressure or temperature swing adsorption using sensors or gas analysers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40013—Pressurization
    • B01D2259/40015—Pressurization with two sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40028—Depressurization
    • B01D2259/4003—Depressurization with two sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
    • B01D2259/40062—Four
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/402—Further details for adsorption processes and devices using two beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4533—Gas separation or purification devices adapted for specific applications for medical purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4541—Gas separation or purification devices adapted for specific applications for portable use, e.g. gas masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0446—Means for feeding or distributing gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • B01D53/053—Pressure swing adsorption with storage or buffer vessel

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Emergency Medicine (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Analytical Chemistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

A component gas concentrator includes an air compressor, an air-tight first container containing a molecular sieve bed, the first container in fluid communication with the compressor through a first gas conduit, and an air-tight second container in fluid communication with the first container through a second gas conduit. A gas flow controller such as PLC controls actuation of valves mounted to the gas conduits.
AU2001279527A 2000-08-02 2001-08-02 Miniaturized wearable oxygen concentrator Abandoned AU2001279527A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US22259100P 2000-08-02 2000-08-02
US60222591 2000-08-02
PCT/CA2001/001120 WO2002009848A2 (en) 2000-08-02 2001-08-02 Miniaturized wearable oxygen concentrator

Publications (1)

Publication Number Publication Date
AU2001279527A1 true AU2001279527A1 (en) 2002-02-13

Family

ID=22832848

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001279527A Abandoned AU2001279527A1 (en) 2000-08-02 2001-08-02 Miniaturized wearable oxygen concentrator

Country Status (11)

Country Link
US (1) US6547851B2 (en)
EP (1) EP1307277B9 (en)
JP (2) JP2004504927A (en)
CN (1) CN1221303C (en)
AT (1) ATE311239T1 (en)
AU (1) AU2001279527A1 (en)
CA (1) CA2354795C (en)
DE (1) DE60115458T2 (en)
ES (1) ES2254458T3 (en)
IL (2) IL154244A0 (en)
WO (1) WO2002009848A2 (en)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7032589B2 (en) * 2002-01-23 2006-04-25 The Johns Hopkins University Portable ventilator
US6755895B2 (en) * 2002-04-09 2004-06-29 H2Gen Innovations, Inc. Method and apparatus for pressure swing adsorption
US7637989B2 (en) * 2003-12-31 2009-12-29 Merits Health Products Co., Ltd. Rapid cycle pressure swing adsorption oxygen concentration method and mechanical valve for the same
US7273051B2 (en) * 2004-01-22 2007-09-25 Air Products And Chemicals, Inc. Dual mode medical oxygen concentrator
US7279029B2 (en) * 2004-05-21 2007-10-09 Air Products And Chemicals, Inc. Weight-optimized portable oxygen concentrator
EP2537573A1 (en) 2004-10-12 2012-12-26 Airsep Corporation Mini-portable oxygen concentrator
US7954490B2 (en) 2005-02-09 2011-06-07 Vbox, Incorporated Method of providing ambulatory oxygen
US7368005B2 (en) * 2005-04-05 2008-05-06 Respironics Oxytec, Inc. Portable oxygen concentrator
US7329304B2 (en) * 2005-04-05 2008-02-12 Respironics Oxytec, Inc. Portable oxygen concentrator
US7402193B2 (en) * 2005-04-05 2008-07-22 Respironics Oxytec, Inc. Portable oxygen concentrator
US7491261B2 (en) * 2005-06-27 2009-02-17 Wearair Oxygen, Inc. Process and apparatus for generating and delivering an enriched gas fraction
US7771511B2 (en) * 2006-08-28 2010-08-10 Ric Investments, Llc Oxygen concentration system and method
FR2906160B1 (en) 2006-09-25 2009-06-05 Air Liquide PSA METHOD WITH COMPOSITE ADSORPTION BED FORMED OF ADSORBENT AND AGGLOMERATS OF MCP
NZ619142A (en) * 2007-04-20 2015-08-28 Invacare Corp Product gas concentrator and method associated therewith
US20090065007A1 (en) 2007-09-06 2009-03-12 Wilkinson William R Oxygen concentrator apparatus and method
US20090205493A1 (en) * 2008-02-20 2009-08-20 Thompson Loren M Method of removing water from an inlet region of an oxygen generating system
US20090205494A1 (en) * 2008-02-20 2009-08-20 Mcclain Michael S Single manifold assembly for oxygen-generating systems
US20090211443A1 (en) * 2008-02-21 2009-08-27 Youngblood James H Self-serviceable filter for an oxygen generating device
US7722698B2 (en) * 2008-02-21 2010-05-25 Delphi Technologies, Inc. Method of determining the purity of oxygen present in an oxygen-enriched gas produced from an oxygen delivery system
US20090214393A1 (en) * 2008-02-22 2009-08-27 Chekal Michael P Method of generating an oxygen-enriched gas for a user
US8075676B2 (en) 2008-02-22 2011-12-13 Oxus America, Inc. Damping apparatus for scroll compressors for oxygen-generating systems
DE102008011827A1 (en) * 2008-02-29 2009-09-10 Fresenius Medical Care Deutschland Gmbh Method for controlling valves for flow path control and machines, in particular medical treatment machines
US20090229460A1 (en) * 2008-03-13 2009-09-17 Mcclain Michael S System for generating an oxygen-enriched gas
USD606655S1 (en) 2008-06-27 2009-12-22 Inova Labs, Llc Portable oxygen concentrator
EP2456541A4 (en) 2009-07-22 2013-03-06 Vbox Inc Method of separating and distributing oxygen
US8616207B2 (en) 2010-09-07 2013-12-31 Inova Labs, Inc. Oxygen concentrator heat management system and method
US20120055474A1 (en) 2010-09-07 2012-03-08 Wilkinson William R Methods and systems for providing oxygen enriched gas
CN102151351B (en) * 2011-03-09 2017-02-08 广州军区广州总医院 Portable oxygen source supply device applicable to anaesthesia apparatus or breathing machine
CN103442785A (en) 2011-04-08 2013-12-11 乔治洛德方法研究和开发液化空气有限公司 Mixture of an adsorbent and a phase change material with an adapted density
JP6336991B2 (en) 2012-10-12 2018-06-06 イノヴァ ラボ，インコーポレイテッド Oxygen concentrator duplex system and method
US20140137744A1 (en) 2012-10-12 2014-05-22 Inova Labs, Inc., A Delaware Corporation Oxygen concentrator systems and methods
AU2013328912B2 (en) 2012-10-12 2017-10-12 Inova Labs, Inc. Method and systems for the delivery of oxygen enriched gas
WO2014118684A1 (en) 2013-01-30 2014-08-07 Koninklijke Philips N.V. Oxygen separation system and method of generating a flow of oxygen enriched gas
US9440179B2 (en) 2014-02-14 2016-09-13 InovaLabs, LLC Oxygen concentrator pump systems and methods
EP2997991A1 (en) * 2014-09-19 2016-03-23 Koninklijke Philips N.V. Device for providing supplemental oxygen to a subject
US10315002B2 (en) 2015-03-24 2019-06-11 Ventec Life Systems, Inc. Ventilator with integrated oxygen production
US11247015B2 (en) 2015-03-24 2022-02-15 Ventec Life Systems, Inc. Ventilator with integrated oxygen production
GB201507549D0 (en) * 2015-04-29 2015-06-17 Smiths Medical Int Ltd Ventilator apparatus and systems
JP7290913B2 (en) * 2015-06-29 2023-06-14 ノヴァルング ゲーエムベーハー Conveying device for gas exchange device
WO2017192660A1 (en) 2016-05-03 2017-11-09 Inova Labs, Inc. Method and systems for the delivery of oxygen enriched gas
US10773049B2 (en) 2016-06-21 2020-09-15 Ventec Life Systems, Inc. Cough-assist systems with humidifier bypass
JP6556676B2 (en) * 2016-08-30 2019-08-07 Ckd株式会社 Pneumatic valve and concentrator equipped with the same
JP6466008B1 (en) * 2018-03-22 2019-02-06 レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード Adsorption tower switching device
WO2019202390A1 (en) * 2018-04-20 2019-10-24 Roam Technologies Pty Ltd Systems and methods for providing concentrated oxygen to a user
CA3100163A1 (en) 2018-05-13 2019-11-21 Samir Saleh AHMAD Portable medical ventilator system using portable oxygen concentrators
CN109305659A (en) * 2018-10-24 2019-02-05 江苏新颖氧科技发展有限公司 High pressure molecular sieve oxygen generator and molecular sieve oxygen generator module with boost function
CN111689473A (en) * 2019-04-29 2020-09-22 中船重工(海南)工程有限公司 Wearable oxygen generation clothes
CN110127619B (en) * 2019-05-31 2024-10-22 温州市康之本制氧科技有限公司 Matrix type integrated PSA (pressure sensitive adhesive) efficient oxygen generation system
EP4262949B1 (en) 2020-12-21 2025-11-12 Ventec Life Systems, Inc. Ventilator systems with integrated oxygen delivery, and associated devices and methods
CN114288574B (en) * 2021-12-31 2022-12-23 成都康拓兴业科技有限责任公司 Wearable oxygenerator
CN115076071B (en) * 2022-06-29 2024-05-24 中科美菱低温科技股份有限公司 Compressed air source device and application thereof

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944627A (en) 1958-02-12 1960-07-12 Exxon Research Engineering Co Method and apparatus for fractionating gaseous mixtures by adsorption
US3400713A (en) * 1966-10-12 1968-09-10 James E. Finan Apparatus for intermittently dispensing oxygen or other gas suitable for breathing
US4222750A (en) * 1976-08-16 1980-09-16 Champion Spark Plug Company Oxygen enrichment system for medical use
JPS57106504A (en) * 1980-12-22 1982-07-02 Hitachi Ltd Concentrating method for oxygen
US4516424A (en) * 1982-07-09 1985-05-14 Hudson Oxygen Therapy Sales Company Oxygen concentrator monitor and regulation assembly
US4589888A (en) * 1984-10-05 1986-05-20 Union Carbide Corporation Pressure swing adsorption process
US4685939A (en) 1985-03-19 1987-08-11 Air Products And Chemicals, Inc. Production of oxygen enriched air
US4802899A (en) * 1987-09-21 1989-02-07 Airsep Corporation Pressure swing adsorption apparatus
JP3076912B2 (en) * 1989-11-08 2000-08-14 株式会社日立製作所 Method and apparatus for separating mixed gas
EP0449448B1 (en) * 1990-03-29 1997-01-22 The Boc Group, Inc. Process for producing oxygen enriched product stream
JPH04290514A (en) * 1991-03-19 1992-10-15 Tokico Ltd Gas separator
US5340381A (en) * 1993-05-17 1994-08-23 Vorih Marc L Operating system for dual-sieve oxygen concentrators
US5540758A (en) * 1994-02-03 1996-07-30 Air Products And Chemicals, Inc. VSA adsorption process with feed/vacuum advance and provide purge
JPH0857241A (en) * 1994-08-19 1996-03-05 Tokico Ltd Gas separation apparatus and gas separation method
JP2593810B2 (en) * 1994-11-04 1997-03-26 日本ルフト株式会社 Respiratory oxygenator
US5531807A (en) 1994-11-30 1996-07-02 Airsep Corporation Apparatus and method for supplying oxygen to passengers on board aircraft
US5529607A (en) * 1995-03-15 1996-06-25 The Boc Group, Inc. PSA process with dynamic purge control
US5850833A (en) 1995-05-22 1998-12-22 Kotliar; Igor K. Apparatus for hypoxic training and therapy
JPH09141038A (en) * 1995-11-17 1997-06-03 Tokico Ltd Gas separation device
FR2751244B1 (en) * 1996-07-18 1998-09-04 Air Liquide METHOD AND PLANT FOR TREATING A GAS MIXTURE BY PRESSURE VARIATION ADSORPTION
US5912426A (en) * 1997-01-30 1999-06-15 Praxair Technology, Inc. System for energy recovery in a vacuum pressure swing adsorption apparatus
US5871564A (en) 1997-06-16 1999-02-16 Airsep Corp Pressure swing adsorption apparatus
US6003744A (en) 1998-04-01 1999-12-21 Culjak; Iolanthe Lumbar oxygen carrier
FR2783723B1 (en) * 1998-09-25 2000-12-29 Air Liquide PROCESS FOR TREATING A GAS MIXTURE BY PRESSURE MODULATION ADSORPTION WITH A VARIABLE PRODUCTION RATE
JP2000157824A (en) * 1998-11-26 2000-06-13 Ikiken:Kk Noise suppressing device in oxygen concentrator

Also Published As

Publication number Publication date
WO2002009848A2 (en) 2002-02-07
JP2004504927A (en) 2004-02-19
HK1060860A1 (en) 2004-08-27
CN1460032A (en) 2003-12-03
EP1307277B9 (en) 2007-10-17
CA2354795A1 (en) 2002-02-02
EP1307277A2 (en) 2003-05-07
ATE311239T1 (en) 2005-12-15
EP1307277B1 (en) 2005-11-30
DE60115458T2 (en) 2006-08-17
US6547851B2 (en) 2003-04-15
CN1221303C (en) 2005-10-05
US20020033095A1 (en) 2002-03-21
IL154244A0 (en) 2003-09-17
WO2002009848A3 (en) 2002-03-28
ES2254458T3 (en) 2006-06-16
DE60115458D1 (en) 2006-01-05
IL154244A (en) 2007-05-15
JP2013236941A (en) 2013-11-28
CA2354795C (en) 2010-02-02

Similar Documents

Publication Publication Date Title
AU2001279527A1 (en) Miniaturized wearable oxygen concentrator
CA2262654A1 (en) Closed-loop feedback control for oxygen concentrator
AU6599900A (en) Pressure control device for a pipeline
WO1999011989A3 (en) Compact small volume liquid oxygen production system
WO2005081680A3 (en) System and method for altitude control
WO2002096342A3 (en) Exhaust port assembly for a pressure support system
CA2234397A1 (en) Oxygen mixing in a blower-based ventilator
DE69626643T2 (en) PNEUMATICALLY OPERATED GAS DEMAND
WO2005018789A3 (en) Oxygen-concentrating device
TW200517155A (en) Oxygen concentrating apparatus and rotary valve
MXPA03009675A (en) Apparatus for conditioning air.
CA2228462A1 (en) Integrated high pressure fill port and flow controller for cylinder recharger
WO2004074746A3 (en) Device and method of reducing bias flow in oscillatory ventilators
AU6548898A (en) Exhaust gas recirculation valve with integral feedback proportional to volumetric flow
CA2509879A1 (en) Reactant gas humidification apparatus and reactant gas humidification method
MXPA03005392A (en) Pressure equalization apparatus and methods.
WO2002020959A3 (en) Hydrogen motor
WO2004079496A3 (en) System for fabricating electrical circuits employing a fluid flow supporter
AU2001228746A1 (en) Device and method to optimize combustion of hydrocarbons
EP1239164A3 (en) Vacuum control apparatus for maintaining the operating condition of a vacuum responsive device during loss and resumption of power
CA2369949A1 (en) Miniaturized wearable oxygen concentrator
CA2154007A1 (en) Microvalve for Fluid Delivery System
EP1229253A3 (en) Method for maintaining the operating condition of a vacuum responsive device during loss and resumption of power
WO2009046292A3 (en) System and method for air flow control in a turbocharger
SE0300918D0 (en) Anesstesianordning