GB783434A - Improvements in and relating to breathing apparatus - Google Patents

Improvements in and relating to breathing apparatus

Info

Publication number
GB783434A
GB783434A GB3064154A GB3064154A GB783434A GB 783434 A GB783434 A GB 783434A GB 3064154 A GB3064154 A GB 3064154A GB 3064154 A GB3064154 A GB 3064154A GB 783434 A GB783434 A GB 783434A
Authority
GB
United Kingdom
Prior art keywords
valve
diaphragm
pressure
air
pipe
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
GB3064154A
Inventor
Norman Horace Payne
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.)
Normalair Ltd
Original Assignee
Normalair Ltd
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 Normalair Ltd filed Critical Normalair Ltd
Priority to GB3064154A priority Critical patent/GB783434A/en
Publication of GB783434A publication Critical patent/GB783434A/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

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)

Abstract

783,434. Fluid-pressure servomotor-control systems; valves. NORMALAIR, Ltd. Jan. 3, 1956 [Oct. 25, 1954], No. 30641/54. Class 135. Valve mechanism for air or oxygen breathing apparatus comprises a flexible diaphragm c of which a part only communicates during inspiration with the interior of a face mask and which is connected through a lever d pivoted at e with a valve g which controls the admission of pressure air or oxygen from a pipe h to a further flexible diaphragm n which, through a lever o, actuates a main valve q to admit air or oxygen under pressure from a supply pipe p to a pipe j leading to the mask. During expiration the diaphragm c is moved to tÁe right to disengage a seating so as to permit exhaustion to the surrounding air (or water), the diaphragm c being then exposed to the expiration pressure over the whole of its area. At the same time the valve g is closed and the pressure acting on the diaphragm n escapes through a restriction k to cause closure of the valve q. The space between the two diaphragms is connected to the surrounding atmosphere or water.
GB3064154A 1954-10-25 1954-10-25 Improvements in and relating to breathing apparatus Expired GB783434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3064154A GB783434A (en) 1954-10-25 1954-10-25 Improvements in and relating to breathing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3064154A GB783434A (en) 1954-10-25 1954-10-25 Improvements in and relating to breathing apparatus

Publications (1)

Publication Number Publication Date
GB783434A true GB783434A (en) 1957-09-25

Family

ID=10310811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3064154A Expired GB783434A (en) 1954-10-25 1954-10-25 Improvements in and relating to breathing apparatus

Country Status (1)

Country Link
GB (1) GB783434A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375839A (en) * 1965-11-12 1968-04-02 William F. Crenshaw Breathing oxygen mask inhalation and exhalation diaphragm valve unit
USRE31785E (en) * 1978-08-07 1985-01-01 Figgie International, Inc. Breathing valve assembly with diaphragm control of the exhaust ports
WO2013067592A1 (en) * 2011-11-11 2013-05-16 Resmed Limited Exchanger assembly for respiratory treatment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375839A (en) * 1965-11-12 1968-04-02 William F. Crenshaw Breathing oxygen mask inhalation and exhalation diaphragm valve unit
USRE31785E (en) * 1978-08-07 1985-01-01 Figgie International, Inc. Breathing valve assembly with diaphragm control of the exhaust ports
WO2013067592A1 (en) * 2011-11-11 2013-05-16 Resmed Limited Exchanger assembly for respiratory treatment
AU2012334820B2 (en) * 2011-11-11 2014-12-18 ResMed Pty Ltd Exchanger assembly for respiratory treatment
US10589042B2 (en) 2011-11-11 2020-03-17 ResMed Pty Ltd Exchanger assembly for respiratory treatment
US11957835B2 (en) 2011-11-11 2024-04-16 ResMed Pty Ltd Exchanger assembly for respiratory treatment

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