GB857661A - Breathing apparatus - Google Patents

Breathing apparatus

Info

Publication number
GB857661A
GB857661A GB3311456A GB3311456A GB857661A GB 857661 A GB857661 A GB 857661A GB 3311456 A GB3311456 A GB 3311456A GB 3311456 A GB3311456 A GB 3311456A GB 857661 A GB857661 A GB 857661A
Authority
GB
United Kingdom
Prior art keywords
supply chamber
exhalation
mask
inhalation
gas
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
GB3311456A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3311456A priority Critical patent/GB857661A/en
Publication of GB857661A publication Critical patent/GB857661A/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
    • B63C11/2236—Functionally interdependent first/second-stage regulators

Abstract

857,661. Respiratory appliances. HAMPTON, T. A. Oct. 16, 1957 [Oct. 30, 1956], No. 33114/56. Class 81(2) Breathing apparatus comprises a mask or mouthpiece, a housing 4 divided by a flexible diaphragm 6 into a supply chamber 7, which is connected to a source of compressed gas, and a pressure balance chamber 8, which is connected to an exhalation valve 19 and to an air reservoir 18, and a valve 13 biassed to prevent entry of gas to the supply chamber and operatively connected to the diaphragm. The pressure balance chamber and the gas supply chamber are connected to the mask or mouthpiece by flexible exhalation and inhalation tubes 10, 9 respectively. On inhalation of the wearer, the diaphragm 6 is moved inwardly of the gas supply chamber 7 and moves the element 13 which is pivotally mounted against a spring 15 to allow compressed gas to enter the supply chamber. The air reservoir comprises a corrugated tube, which may be radially expansible and contractible and which is disposed between the mask 1 and the exhalation valve 19 to compensate for fluctuations in pressure due to expansion or contraction of the inhalation and exhalation tubes as the wearer moves his head.
GB3311456A 1956-10-30 1956-10-30 Breathing apparatus Expired GB857661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3311456A GB857661A (en) 1956-10-30 1956-10-30 Breathing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3311456A GB857661A (en) 1956-10-30 1956-10-30 Breathing apparatus

Publications (1)

Publication Number Publication Date
GB857661A true GB857661A (en) 1961-01-04

Family

ID=10348742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3311456A Expired GB857661A (en) 1956-10-30 1956-10-30 Breathing apparatus

Country Status (1)

Country Link
GB (1) GB857661A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467797A (en) * 1980-12-15 1984-08-28 Franke David M Breathing effort reduction device for scuba gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467797A (en) * 1980-12-15 1984-08-28 Franke David M Breathing effort reduction device for scuba gear

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