GB2008805A - Valve for controlling respiratory gas - Google Patents

Valve for controlling respiratory gas

Info

Publication number
GB2008805A
GB2008805A GB784346A GB7843467A GB2008805A GB 2008805 A GB2008805 A GB 2008805A GB 784346 A GB784346 A GB 784346A GB 7843467 A GB7843467 A GB 7843467A GB 2008805 A GB2008805 A GB 2008805A
Authority
GB
United Kingdom
Prior art keywords
valve
bore
membrane
respiratory gas
chamber
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.)
Granted
Application number
GB784346A
Other versions
GB2008805B (en
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Publication of GB2008805A publication Critical patent/GB2008805A/en
Application granted granted Critical
Publication of GB2008805B publication Critical patent/GB2008805B/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves
    • A62B9/022—Breathing demand regulators
    • A62B9/027—Breathing demand regulators pilot operated, i.e. controlled by valve means sensitive to a reduced downstream pressure

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

A valve assembly is disclosed in which a main valve comprising a piston 13 controls the flow of gas from an inlet 4 to an outlet 9. An auxiliary valve, comprising a bore 28 and membrane 24, which can block the bore 28 controls the pressure in a first chamber 19, and by means of this controls the position of the piston 13. The auxiliary valve is actuated by the pressure in the outlet 9 acting on the membrane 24, such that, when the bore 28 is not obstructed by the membrane 24, the first chamber can be vented to atmosphere via the bore 28, a second chamber 26 partially defined by the membrane 24, and a duct 29. <IMAGE>
GB784346A 1977-11-08 1978-11-07 Valve assembly Expired GB2008805B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2749897A DE2749897C2 (en) 1977-11-08 1977-11-08 Lung-operated breathing gas valve for breathing apparatus

Publications (2)

Publication Number Publication Date
GB2008805A true GB2008805A (en) 1979-06-06
GB2008805B GB2008805B (en) 1982-01-27

Family

ID=6023273

Family Applications (1)

Application Number Title Priority Date Filing Date
GB784346A Expired GB2008805B (en) 1977-11-08 1978-11-07 Valve assembly

Country Status (9)

Country Link
AU (1) AU4140378A (en)
CH (1) CH634753A5 (en)
DE (1) DE2749897C2 (en)
FR (1) FR2407722A1 (en)
GB (1) GB2008805B (en)
NL (1) NL7810392A (en)
NO (1) NO144786C (en)
SE (1) SE7811489L (en)
ZA (1) ZA785889B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418788A1 (en) * 1994-05-24 1995-11-30 Interspiro Gmbh Breathing connection with regulator
CN112370674B (en) * 2020-11-05 2022-01-25 郝志勇 Positive pressure type air respirator for fire fighting

Also Published As

Publication number Publication date
GB2008805B (en) 1982-01-27
CH634753A5 (en) 1983-02-28
DE2749897C2 (en) 1979-09-06
NL7810392A (en) 1979-05-10
NO144786B (en) 1981-08-03
ZA785889B (en) 1979-10-31
FR2407722A1 (en) 1979-06-01
NO144786C (en) 1981-11-11
NO783189L (en) 1979-05-09
AU4140378A (en) 1979-05-17
SE7811489L (en) 1979-05-09
DE2749897B1 (en) 1979-01-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee