GB913950A - Improvements in or relating to breathing apparatus - Google Patents

Improvements in or relating to breathing apparatus

Info

Publication number
GB913950A
GB913950A GB560661A GB560661A GB913950A GB 913950 A GB913950 A GB 913950A GB 560661 A GB560661 A GB 560661A GB 560661 A GB560661 A GB 560661A GB 913950 A GB913950 A GB 913950A
Authority
GB
United Kingdom
Prior art keywords
valve
membrane
inhalation valve
mouthpiece
inhalation
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
GB560661A
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.)
Svenska AB Gasaccumulator
Original Assignee
Svenska AB Gasaccumulator
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 Svenska AB Gasaccumulator filed Critical Svenska AB Gasaccumulator
Publication of GB913950A publication Critical patent/GB913950A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C11/2227—Second-stage regulators
    • 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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

913,950. Respiratory apparatus. SVENSKA A.B. GASACCUMULATOR. Feb. 15, 1961 [Feb. 18, 1960], No. 5606/61. Class 81 (2). Breathing apparatus for use under water or in noxious atmospheres comprises a membraneoperated inhalation valve 5, the valve and the membrane 9 being associated with separate chambers 15, 16 which communicate with a mask or mouthpiece 1 so that air entering the mask or mouthpiece from the inhalation valve has an injector effect, causing a sub-pressure in air in the membrane chamber 16, a direct connection 17 between the chambers being provided to counteract the injector effect. The chambers 15, 16 are separated by a partition 14, an aperture 17 in the partition permitting air to pass into the membrane chamber from the inhalation valve. The injector effect on air in the membrane chamber by air supplied to the mouthpiece 1 from the inhalation valve chamber 15 is counteracted by the passage of gas through the aperture so that the sub-pressure acting on the membrane to keep the inhalation valve open during inhalation is maintained substantially constant independent of the rate at which gas passes to the mouthpiece. The membrane is exposed to the ambient atmosphere or water on one side and carries an exhalation valve 12. The valve stem 7 of the inhalation valve is. spring loaded in the direction of opening to counteract the closing pressure exerted by gas flairing towards the inhalation valve.
GB560661A 1960-02-18 1961-02-15 Improvements in or relating to breathing apparatus Expired GB913950A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE163060 1960-02-18

Publications (1)

Publication Number Publication Date
GB913950A true GB913950A (en) 1962-12-28

Family

ID=20258545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB560661A Expired GB913950A (en) 1960-02-18 1961-02-15 Improvements in or relating to breathing apparatus

Country Status (2)

Country Link
CH (1) CH389412A (en)
GB (1) GB913950A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447535A (en) * 1964-11-10 1969-06-03 Spirotechnique Mouthpiece regulator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9319580D0 (en) * 1993-09-22 1993-11-10 Racal Health & Safety Ltd Valves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447535A (en) * 1964-11-10 1969-06-03 Spirotechnique Mouthpiece regulator

Also Published As

Publication number Publication date
CH389412A (en) 1965-03-15

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