GB1470550A - Divers breathing apparatus - Google Patents

Divers breathing apparatus

Info

Publication number
GB1470550A
GB1470550A GB2800074A GB2800074A GB1470550A GB 1470550 A GB1470550 A GB 1470550A GB 2800074 A GB2800074 A GB 2800074A GB 2800074 A GB2800074 A GB 2800074A GB 1470550 A GB1470550 A GB 1470550A
Authority
GB
United Kingdom
Prior art keywords
gas
ports
bag
loop
end cap
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
GB2800074A
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
Publication of GB1470550A publication Critical patent/GB1470550A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/10—Respiratory apparatus with filter elements
    • 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
    • B63C11/24—Air supply carried by diver in closed circulation

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

1470550 Breathing apparatus T B PAUL 24 June 1974 [6 Feb 1974] 28000/74 Heading A5T A breathing apparatus comprises two gas conduit loops shaving a common portion over part of their length, which portion holds a gas-purifying substance, means for permitting only uni-directional motion of gas through each loop, a mouthpiece 1 in one loop, a gas tight inflatable bag 6 forming part of the other loop and means 13 for admitting make-up gas to the apparatus. The common portion is a canister 5 having a cylindrical centre portion and at least one removable end cap (15) Fig. 3 (not shown) containing two ports for communication with the gas conduit loops, one loop being defined by ports 9, 19, breathing hose 4 and mouthpiece 1, the other loop including ports 7, 8 opening into bag 6. Check valves 2, 3 and 7A, 8A ensure that gas flows in an anticlockwise direction through the mouthpiece and bag loops respectively. Makeup gas is admitted to the apparatus from a high pressure reservoir 13 via a pressure reducing valve 12 and enters at the upstream end 11 of the common canister. A pressure relief valve 17 to regulate the operating gas pressure, is located in bag 6 and comprises a hollow cylindrical body (20) Fig. 7, (not shown) mounting a pressure adjusting screw (26) acting via spring (23), on a movable disc (24) which bears on diaphragm (25). An alternative embodiment, Figs. 8-13, (not shown) also comprises a common cylindrical canister (116) and two end caps (150), (151), but all connections except the gas supply inlet are made to one end cap (151) which contains four ports (107)-(110), (109) and (110) having no valves and connecting with the breathing hose, (107), (108) containing valves (107A), (108A) and communicating with bag 6. Ports (108), (110) pass through end cap (151) and open in the canister body while ports (107), (109) communicate with a chamber (156), formed inside the end cap, which opens into a hollow cylindrical cup (157) sealed over a central pipe (152) extending almost to the other end cap where it opens into the canister body. The arrangement of the valves ensures rebreathed gas passes through the common portion, through the bag and again through the common portion before being inhaled.
GB2800074A 1974-02-06 1974-06-24 Divers breathing apparatus Expired GB1470550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPB648274 1974-02-06

Publications (1)

Publication Number Publication Date
GB1470550A true GB1470550A (en) 1977-04-14

Family

ID=3765845

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2800074A Expired GB1470550A (en) 1974-02-06 1974-06-24 Divers breathing apparatus

Country Status (10)

Country Link
US (1) US3929127A (en)
JP (1) JPS50108797A (en)
AU (1) AU484863B2 (en)
CH (1) CH581045A5 (en)
DE (1) DE2433451A1 (en)
ES (1) ES428070A1 (en)
FR (1) FR2259626B1 (en)
GB (1) GB1470550A (en)
IT (1) IT1018470B (en)
NO (1) NO742304L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118047A (en) * 1982-04-07 1983-10-26 Siebe Gorman & Co Ltd Improvements in and relating to breathing apparatus

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781184A (en) * 1984-01-13 1988-11-01 Fife William P Closed circuit breathing apparatus and method of using same
GB2174913A (en) * 1985-04-15 1986-11-19 Gorman & Company Limited Siebe Improvements in and relating to breathing apparatus
GB2188553A (en) * 1986-04-02 1987-10-07 Coal Ind Improved breathing apparatus
EP0311968B1 (en) * 1987-10-14 1994-04-06 Nippon Sanso Kabushiki Kaisha Breathing apparatus
US4964404A (en) * 1989-04-19 1990-10-23 Stone William C Breathing apparatus
WO1997006053A1 (en) * 1995-08-03 1997-02-20 Grand Bleu Inc. Carbon dioxide adsorption device for a diving breathing device
US6796307B1 (en) * 2002-04-22 2004-09-28 The United States Of America As Represented By The Secretary Of The Navy Multiple person high altitude recycling breathing apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586670A (en) * 1945-01-31 1952-02-19 Christian J Lambertsen Selective gas adsorber
US3707965A (en) * 1970-10-22 1973-01-02 C Guzay Carbon dioxide absorber apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118047A (en) * 1982-04-07 1983-10-26 Siebe Gorman & Co Ltd Improvements in and relating to breathing apparatus

Also Published As

Publication number Publication date
IT1018470B (en) 1977-09-30
NO742304L (en) 1975-08-07
AU484863B2 (en) 1975-11-27
FR2259626A1 (en) 1975-08-29
ES428070A1 (en) 1976-07-16
US3929127A (en) 1975-12-30
DE2433451A1 (en) 1975-08-07
FR2259626B1 (en) 1977-10-21
AU6922374A (en) 1975-11-27
JPS50108797A (en) 1975-08-27
CH581045A5 (en) 1976-10-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee