GB775314A - Improvements in and relating to breathing apparatus - Google Patents

Improvements in and relating to breathing apparatus

Info

Publication number
GB775314A
GB775314A GB3064054A GB3064054A GB775314A GB 775314 A GB775314 A GB 775314A GB 3064054 A GB3064054 A GB 3064054A GB 3064054 A GB3064054 A GB 3064054A GB 775314 A GB775314 A GB 775314A
Authority
GB
United Kingdom
Prior art keywords
valve
casing
diaphragm
pressure
oct
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
GB3064054A
Inventor
Leslie Stewart Daniels
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 GB3064054A priority Critical patent/GB775314A/en
Publication of GB775314A publication Critical patent/GB775314A/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
    • A62B9/025—Breathing demand regulators with tilting opening action
    • 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

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

775,314. Respirators &c. NORMALAIR, Ltd. Oct. 24, 1955 [Oct. 25, 1954], No. 30640/54. Class 81(2) Breathing apparatus for use in noxious atmospheres or under water or for administering anaesthetics comprises a metal or synthetic plastic casing b having a gag - type mouthpiece a and a connection o to a cylinder of compressed air or oxygen &c., the admission of which to the casing is controlled by a tilt valve j having a stem operated by a rubber disc g mounted on a snap-action diaphragm f carrying an exhalation valve m. The stem of the valve j passes through an aperture q in a perforate baffle p against which the rim of the diaphragm is held by a spring s. The casing has a cover having an aperture e through which a finger may be inserted to open the valve j. In normal operation, inhalation results in a lowering of the pressure in the casing so that the diaphragm moves to the left under the ambient pressure and effects opening of the valve j. Upon exhalation, the pressure in the casing rises thus snapping the diaphragm over to the right, the valve being closed by the pressure in the air cylinder.
GB3064054A 1954-10-25 1954-10-25 Improvements in and relating to breathing apparatus Expired GB775314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3064054A GB775314A (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
GB3064054A GB775314A (en) 1954-10-25 1954-10-25 Improvements in and relating to breathing apparatus

Publications (1)

Publication Number Publication Date
GB775314A true GB775314A (en) 1957-05-22

Family

ID=10310793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3064054A Expired GB775314A (en) 1954-10-25 1954-10-25 Improvements in and relating to breathing apparatus

Country Status (1)

Country Link
GB (1) GB775314A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260983B (en) * 1964-11-10 1968-02-08 Spirotechnique Lung-controlled breathing gas supply valve for breathing apparatus
EP1262402A2 (en) * 2001-05-29 2002-12-04 F.X.K. Patents Limited A pressure regulator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260983B (en) * 1964-11-10 1968-02-08 Spirotechnique Lung-controlled breathing gas supply valve for breathing apparatus
EP1262402A2 (en) * 2001-05-29 2002-12-04 F.X.K. Patents Limited A pressure regulator
EP1262402A3 (en) * 2001-05-29 2004-01-28 F.X.K. Patents Limited A pressure regulator
AU783530B2 (en) * 2001-05-29 2005-11-03 Luxfer Gas Cylinders Limited A pressure regulator

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