GB1382404A - Demand valve assembly - Google Patents

Demand valve assembly

Info

Publication number
GB1382404A
GB1382404A GB1436873A GB1436873A GB1382404A GB 1382404 A GB1382404 A GB 1382404A GB 1436873 A GB1436873 A GB 1436873A GB 1436873 A GB1436873 A GB 1436873A GB 1382404 A GB1382404 A GB 1382404A
Authority
GB
United Kingdom
Prior art keywords
valve
outlet
diaphragm
pilot valve
pressure
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
Application number
GB1436873A
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.)
Robertshaw Controls Co
Original Assignee
Robertshaw Controls Co
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 Robertshaw Controls Co filed Critical Robertshaw Controls Co
Publication of GB1382404A publication Critical patent/GB1382404A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/1402—Check valves with flexible valve members having an integral flexible member cooperating with a plurality of seating surfaces
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/202—Controlled valves electrically actuated
    • A61M16/203—Proportional
    • A61M16/204—Proportional used for inhalation control
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/202—Controlled valves electrically actuated
    • A61M16/203—Proportional
    • A61M16/205—Proportional used for exhalation control
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/206—Capsule valves, e.g. mushroom, membrane valves
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/207—Membrane valves with pneumatic amplification stage, i.e. having master and slave membranes
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K2200/00—Details of valves
    • F16K2200/20—Common housing having a single inlet, a single outlet and multiple valve members
    • F16K2200/202—Common housing having a single inlet, a single outlet and multiple valve members one valve arranged inside of the valve member of a second valve, e.g. nested valve members
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type
    • Y10T137/7766—Choked passage through main valve head
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7782—With manual or external control for line valve
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7841—One valve carries head and seat for second valve

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

1382404 Respiratory appliances ROBERTSHAW CONTROLS CO 26 March 1973 [27 March 1972] 14368/73 Heading A5T [Also in Division G3] A demand valve for use with breathing or resuscitation equipment comprises a valve 104 to control a gas flow to an outlet passage 114, a valve 124 to vent an exhaust flow from the user to atmosphere, a pilot valve 30 controlling pressure on one side of the valve 104, a diaphragm 42 sensing pressure in the outlet passage 114 for moving the pilot valve between open and closed positions, and a manually actuated button 54 for moving the pilot valve to its open position. The diaphragm 42 'forms one side of a chamber 12 connected by a passage 18 to the outlet 114 which also communicates through arcuate apertures (not shown) with an annular space 88 inside a casing 84 for the valve 104. When the pilot valve is closed, pressure from an oxygen or air mixture supply connected to a radial inlet (not shown) acts through passages 74, 76 on the left hand side of the valve 104 and also through passages 78, 86 and 94 on the right hand side of the valve. When the pilot valve is opened either by the button 54 or by the diaphragm 42, the right hand side of the valve 104 is connected through the passages 94, 16, the space 12 and the passage 18 with the outlet 114 so that the valve 104 is lifted by supply pressure to allow oxygen or air mixture to flow into the outlet through a pair of flap valves (not shown). The outlet 114 may be connected to a face mask and the diaphragm may be displaced to open the pilot valve each time the user inhales. Exhalation raises the pressure in the outlet to close the flap valves and lift the valve 124 from its seat 116 so that the outlet is connected to a vent 118. To prevent the pilot valve being held open by the button 54 during exhalation, the diaphragm 42 is displaced by exhalation pressure against a second spring-loaded button 56.
GB1436873A 1972-03-27 1973-03-26 Demand valve assembly Expired GB1382404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23850272A 1972-03-27 1972-03-27

Publications (1)

Publication Number Publication Date
GB1382404A true GB1382404A (en) 1975-01-29

Family

ID=22898193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1436873A Expired GB1382404A (en) 1972-03-27 1973-03-26 Demand valve assembly

Country Status (5)

Country Link
US (1) US3795257A (en)
JP (1) JPS498093A (en)
CA (1) CA976055A (en)
FR (1) FR2177977B1 (en)
GB (1) GB1382404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195900A (en) * 1986-09-06 1988-04-20 Peter Joseph Jackson Pilot operated valve for breathing apparatus

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121580A (en) * 1977-02-07 1978-10-24 Robertshaw Controls Company Squeeze bag resuscitator with air-oxygen proportionating control
US4374521A (en) * 1980-09-12 1983-02-22 Puritan-Bennett Corporation Squeeze bag type resuscitator apparatus
US4501271A (en) * 1981-10-13 1985-02-26 John William Spear Resuscitator
US4774941A (en) * 1983-05-04 1988-10-04 Intertech Resources Inc. Resuscitator bag
US4572175A (en) * 1983-07-20 1986-02-25 Flynn Stephen D Multi-mode demand valve
US5002050A (en) * 1986-09-17 1991-03-26 Mcginnis Gerald E Medical gas flow control valve, system and method
US4971108A (en) * 1986-09-19 1990-11-20 Mark Gottlieb Inhalation responsive gas pressure regulator
US4832016A (en) * 1988-03-10 1989-05-23 Kent Berg Remotely controlled actuator for a resuscitator
US4898174A (en) * 1988-05-03 1990-02-06 Life Support Products, Inc. Automatic ventilator
DE4106071A1 (en) * 1991-02-27 1992-09-03 Morlock Gmbh Membrane unit with housing and cover - has clinch connection and feeder pipe for the hydraulic or pneumatic medium
DE4120609C1 (en) * 1991-06-20 1993-02-11 Wiest, Peter P., Dipl.-Ing., 1000 Berlin, De Gas connector for insufflation appts. - has pressure reducer, safety valve, pressure indicator and gas outlet union with magnetic valve
WO1994006514A1 (en) * 1992-09-11 1994-03-31 Life Support Products, Inc. Demand valve with reduced manual flow control
JPH06191481A (en) * 1992-12-22 1994-07-12 Zexel Corp Mouth piece for semi-closed type breather
US5438980A (en) * 1993-01-12 1995-08-08 Puritan-Bennett Corporation Inhalation/exhalation respiratory phase detection circuit
NL9400102A (en) * 1994-01-21 1995-09-01 Pim De Bruijn Breathing air supply system.
US5787882A (en) * 1996-06-21 1998-08-04 Computer Assisted Engineering Demand valve resuscitator
US5749358A (en) * 1996-10-10 1998-05-12 Nellcor Puritan Bennett Incorporated Resuscitator bag exhaust port with CO2 indicator
USD424193S (en) * 1998-10-15 2000-05-02 Ntc Technology, Inc. Airway valve
US6098622A (en) * 1998-10-15 2000-08-08 Ntc Technology Inc. Airway valve to facilitate re-breathing, method of operation, and ventilator circuit so equipped
US6123674A (en) * 1998-10-15 2000-09-26 Ntc Technology Inc. Airway valve to facilitate re-breathing, method of operation, and ventilator circuit so equipped
US6634357B1 (en) 2000-02-22 2003-10-21 Life Support Technology, Inc. Resuscitation valve assembly
US6364161B1 (en) * 2000-09-27 2002-04-02 Victor Equipment Company Oxygen conserver
US7066175B2 (en) * 2001-05-07 2006-06-27 Emergent Respiratory Products, Inc. Portable gas powered positive pressure breathing apparatus and method
US20040089294A1 (en) * 2002-11-12 2004-05-13 Hsing-Chi Hsieh Diaphragm holder for pressure regulator of air tank used in diving
GB2402458B (en) * 2003-06-06 2006-04-19 Internat Safety Instr Inc Demand valves for breathing apparatus
DE102007012729B3 (en) * 2007-03-16 2008-07-03 Dräger Medical AG & Co. KG Dosing valve for breathing gas, has preliminary pressure compensation, valve drive, working membrane between preliminary pressure chamber and back pressure chamber
GB201106479D0 (en) * 2011-04-18 2011-06-01 Draeger Safety Uk Ltd Diaphragm
CN103182129B (en) 2011-12-30 2015-12-09 北京谊安医疗系统股份有限公司 Bypass valve
US10675433B2 (en) * 2017-05-25 2020-06-09 MGC Diagnostics Corporation Solenoid controlled respiratory gas demand valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA660930A (en) * 1963-04-09 F. Hosford Norman Respiratory apparatus
US2954793A (en) * 1958-09-12 1960-10-04 Henry W Seeler Pressure compensated inhalationexhalation valve for pressure breathing mask
US3232304A (en) * 1962-03-19 1966-02-01 Scott Aviation Corp Inhalation/exhalation valve unit having light movable components
US3285261A (en) * 1962-12-21 1966-11-15 Robertshaw Controls Co Breathing demand regulator
US3435839A (en) * 1965-05-21 1969-04-01 Elder Oxygen Co Inc Backflow bypassing valve for breathing apparatus
US3493010A (en) * 1967-10-25 1970-02-03 H & H Thermostats Inc Control valve for fluid dispensing system
US3526360A (en) * 1968-10-18 1970-09-01 Itt Main line valve with pilot regulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195900A (en) * 1986-09-06 1988-04-20 Peter Joseph Jackson Pilot operated valve for breathing apparatus
GB2195900B (en) * 1986-09-06 1991-07-24 Peter Joseph Jackson Pilot operated valves

Also Published As

Publication number Publication date
JPS498093A (en) 1974-01-24
US3795257A (en) 1974-03-05
FR2177977B1 (en) 1977-02-11
FR2177977A1 (en) 1973-11-09
CA976055A (en) 1975-10-14

Similar Documents

Publication Publication Date Title
GB1382404A (en) Demand valve assembly
US2893381A (en) Valve means
GB875790A (en) Breathing control valve
GB1392069A (en) Respiratory apparatus
GB1477313A (en) Valves
GB1019986A (en) Breathing demand regulator
GB1034759A (en) Valve for artificial respiration apparatus
GB1212527A (en) Improvements in or relating to lung ventilating apparatus
GB1157365A (en) Squeeze-Bag Resuscitator
GB983192A (en) Respiratory assister
GB1444607A (en) Ventilators
GB1495642A (en) Valve devices
GB1181411A (en) Valve Assembly
GB1528583A (en) Lung ventilating apparatus
GB748363A (en) Improvements in or relating to fluid actuated valves
GB1340925A (en) Breathing apparatus with a breathing apparatus with a breathing mask
US4253455A (en) Breathing valve assembly with diaphragm control of the exhaust ports
GB1352785A (en) Respiratory apparatus
GB918824A (en) Improvements relating to fluid flow regulating devices
GB1344101A (en) Breathing valve
GB1518356A (en) Breathing apparatus
GB1478509A (en) Positive pressure resuscitator or inhaler
GB1281802A (en) Improvements in or relating to respirators for artificial ventilation
US2814290A (en) Respiratory apparatus
GB931363A (en) Passenger mask assembly

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee