US3716053A - Breathing apparatus - Google Patents

Breathing apparatus Download PDF

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Publication number
US3716053A
US3716053A US00123708A US3716053DA US3716053A US 3716053 A US3716053 A US 3716053A US 00123708 A US00123708 A US 00123708A US 3716053D A US3716053D A US 3716053DA US 3716053 A US3716053 A US 3716053A
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US
United States
Prior art keywords
mask
room
gas
breathing
inner mask
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 - Lifetime
Application number
US00123708A
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English (en)
Inventor
H Almovist
S Backlund
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.)
Spirotech Inc
Original Assignee
AGA AB
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
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Application filed by AGA AB filed Critical AGA AB
Application granted granted Critical
Publication of US3716053A publication Critical patent/US3716053A/en
Assigned to INTERSPIRO AB A SWISS CORP reassignment INTERSPIRO AB A SWISS CORP ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AGA AKTIEBOLAG
Assigned to INTERSPIRO U.S.A., INC. reassignment INTERSPIRO U.S.A., INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERSPIRO AB
Anticipated expiration legal-status Critical
Assigned to SPIROTECH, INC. reassignment SPIROTECH, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERSPIRO U.S.A., INC.,
Assigned to SPIROTECH, INC. reassignment SPIROTECH, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERSPIRO U.S.A., INC.,
Expired - Lifetime legal-status Critical Current

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S137/00—Fluid handling
    • Y10S137/908—Respirator control

Definitions

  • a breathing apparatus having a breathing mask which consists of an outer mask provided with eye pieces and an inner mask enclosing the mouth and the nose.
  • a gas chamber is connected with the mask and is divided into two rooms.
  • a first room comprises an inlet valve and is in direct gas fluid communication with the space between the outer and the inner mask, and a second room comprises an outlet valve and a membrance for controlling the inlet valve and is in direct gas fluid communication with the space inside the inner mask.
  • the present invention refers to a breathing apparatus with a breathing mask which comprises an outer mask provided with eye ,pieces and an inner mask which is adapted to conduct the breathing gas to and from a user of the apparatus. Furthermore it is assumed that the breathing apparatus is of the kind in which the breathing mask is connected with a gas chamber having an outlet valve, a control membrane and an inlet valve controlled by the membrane.
  • Breathing devices to be used both for breathing in a noxious atmosphere and for diving under water have been provided with a common inhalation and exhalation valve designed as a double valve. in this way it has become possible to mount the outlet valve near the pressure sensitive means of the breathing regulator so that they are not actuated by different'pressures atdifferent positions during diving under water.
  • Breathing devices of this kind comprise a common gas chamber for the inhalation gas and the exhalation gas, said chamber also comprising an inlet valve and an outlet valve. In said gas chamber, however, the fresh inhalation gas is mixed with remainders of the exhalation gas which has stayed in the gas chamber.
  • FIGS. 1 and 2 are diagrammatic sectional plan views of a portion of previously known breathing devices
  • FIG. 3 is a diagrammatic sectional plan view of a portion of an apparatus according to the invention.
  • FIG. 4 is a diagrammatic sectional plan view of a portion of a modification of the breathing apparatus according to the invention.
  • Another advantage of the breathing apparatus according to the invention consists therein that it can be provided with simple means for controlling the breathing pressure so that an overpressure, called safety pressure" can be upheld in the mask both during inhalation and exhalation. This result can be obtained by applying an adjustable load on the membrane which actuates the inlet valve. Furthermore, the outlet valve can be arranged on the membrane.
  • a connection is provided between the two rooms. in this way only a minor flow of fresh gas is caused to flush past the eye pieces and thereupon to pass into the inner mask.
  • the inhalation gas will certainly comprise a part of the gas previously exhaled, but this is of no importance with regard to the dimming of the eye pieces with moisture, since this part of the inhalation gas does not pass the eye pieces.
  • FIG. 1 shows a breathing apparatus with an outer mask 4, and an inner mask 5.
  • the space between the masks 4 and 5 is supplied with breathing gas from a gas chamber 1 through an inlet valve 2.
  • the inhalation gas flushes past the eye pieces 8 on the outer mask 4 and into the inner mask 5 through non-return valves 6.
  • the exhalation gas leaves the inner mask 5 through an outlet valve 3 and an outlet 9.
  • This previously known apparatus is rather complicated and has a great number of movable parts. Furthermore it is suitable only for breathing in a noxious atmosphere.
  • FIG. 2 shows a previously known breathing apparatus which can be used both for diving under water and for breathing in a noxious atmosphere. It is provided with an inner mask 5 and an outer mask 4.
  • This breathing apparatus has a gas chamber 1 provided with an inlet 16 for the breathing gas.
  • This inlet may comprise an inlet valve controlled by means of a lever 17, by. a membrane mounted in a chamber 18.
  • the chamber 18 may also comprise outlets for the breathing gas.
  • a double valve 7 is arranged which allows the inhalation gas to pass at the periphery of the double valve 7 and which allows the exhalation gas to pass a latch formed member at the central part of the double valve 7.
  • This function has been indicated by unfilled arrows for the inhalation gas and filled arrows for the exhalation gas.
  • the inhalation gas passes the eye pieces 8 and then reaches the inner mask through the non-return valves 6.
  • the gas chamber 1 has been divided into two rooms 12 and 13 by means of a wall 14.
  • the room 12 comprises an inlet valve 19 which may be loaded by a spring 20 and which is controlled by a membrane 21 in the chamber 18 over a lever 17.
  • the membrane 21 is provided with openings 22 which are covered by an outlet valve 23.
  • the exhalation gas reaches the surrounding through holes 24 in a lid 25.
  • the outlet valve 23 may be formed by a rubber disk which is connected with the membrane 21 at the center so that the exhalation gas may pass at the periphery of the exhalation valve 23. 7
  • the breathing apparatus shown in FIG. 4 is identical with the one shown in FIG. 3 but has been completed with a direct connection between the rooms 12 and 13 in the form of a hole 15 in the wall 14.
  • the major part of the fresh gas passes into the room 13 since acertain over pressure is present in the room 12.
  • the entire exhalation flow passes into the room 13. Due to the over pressure in the room 12 a certain flow of fresh gas is caused to pass the eye pieces 8 and thereupon into the inner mask, said flow of gas being sufficient to prevent deposition of moisture'ontheeye pieces.
  • the inhalation valve is so designed that a certain underpressure under the membrane gives a certain flow of gas.
  • a fall of pressure appears in the inlet conduits and the inlet valves which directs the inhalation gas from the inhalation valve past the eye pieces and into the inner mask.
  • Breathing apparatus with a breathing mask comprising an outer mask and an innermask, the outer mask being provided with eye pieces and the inner mask for enclosing the mouth and nose of the user of the apparatus, and further comprising a gas chamber connected with the breathing mask, a wall dividing the gas chamber into a first and second room, the first room comprising an inlet valve and being in direct gas fluid connection with the space between the outer mask and the inner mask, the second room being in direct gas fluid connection with the space inside the inner mask, air inlet means opening into said first'room and outlet means opening into from said second room, a control member disposed in said second room between said inlet means and outlet means, an outlet valvedisposed between said control member and said outlet means, a lever connecting the member and the inlet valve for controlling the inlet valve, said lever being hinged in said wall and having one part in said first room and another part in said second room.

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)
US00123708A 1970-03-12 1971-03-12 Breathing apparatus Expired - Lifetime US3716053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE03260/70A SE336528B (enrdf_load_stackoverflow) 1970-03-12 1970-03-12

Publications (1)

Publication Number Publication Date
US3716053A true US3716053A (en) 1973-02-13

Family

ID=20261733

Family Applications (1)

Application Number Title Priority Date Filing Date
US00123708A Expired - Lifetime US3716053A (en) 1970-03-12 1971-03-12 Breathing apparatus

Country Status (6)

Country Link
US (1) US3716053A (enrdf_load_stackoverflow)
JP (1) JPS5525857B1 (enrdf_load_stackoverflow)
DE (1) DE2111241C3 (enrdf_load_stackoverflow)
FR (1) FR2084534A5 (enrdf_load_stackoverflow)
GB (1) GB1340925A (enrdf_load_stackoverflow)
SE (1) SE336528B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002166A (en) * 1975-04-23 1977-01-11 Amf Incorporated Bypassed scuba regulator
US4276877A (en) * 1979-03-05 1981-07-07 Dragerwerk Aktiengesellschaft Respiratory method and apparatus
US4337766A (en) * 1980-05-21 1982-07-06 Chubb Panorama Limited Valves
US4361145A (en) * 1979-10-09 1982-11-30 Aga Aktiebolag Respirator mask
US4467797A (en) * 1980-12-15 1984-08-28 Franke David M Breathing effort reduction device for scuba gear
US4676236A (en) * 1983-09-09 1987-06-30 Gentex Corporation Helmet airflow system
US5464009A (en) * 1993-02-01 1995-11-07 Sabre Safety Limited Valve for use in breathing apparatus
US6520177B1 (en) * 1997-06-10 2003-02-18 Intertechnique Device for providing protection against hypoxia, usable in a hostile environment
US20040000311A1 (en) * 2002-06-24 2004-01-01 Lowry Philip L. Clean gas purge for breathing gas regulator
GB2398017A (en) * 2000-08-07 2004-08-11 Secr Defence Respirator mask
US20050217669A1 (en) * 2002-02-16 2005-10-06 Bee Christopher R Respirators
US8651068B1 (en) 2011-07-28 2014-02-18 Brunswick Corporation Systems and devices for separating water and contaminants from fuel

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135198B (en) * 1983-02-16 1986-07-30 Siebe Gorman & Co Ltd Facemasks for breathing apparatus
GB2203050B (en) * 1987-04-06 1991-07-31 Cam Lock Respirator
JPH02302217A (ja) * 1989-05-17 1990-12-14 Matsushita Electric Ind Co Ltd 調理器
DE3940317A1 (de) * 1989-12-06 1991-06-13 Draegerwerk Ag Tauchermaske
TWI510261B (zh) * 2013-12-12 2015-12-01 Univ Chienkuo Technology Multi - stage gas volume adjustment of the auxiliary breathing device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684066A (en) * 1951-11-13 1954-07-20 Acme Prot Equipment Company Pressure regulator structure for pressure-type gas masks
GB764111A (en) * 1954-01-07 1956-12-19 Gasaccumulator Svenska Ab Face mask for under-water breathing
US2810386A (en) * 1952-11-07 1957-10-22 American Optical Corp Oxygen masks embodying means for ventilating goggles
US3149631A (en) * 1960-02-18 1964-09-22 Gasaccumulator Svenska Ab Arrangement in breathing apparatus
NL6403328A (enrdf_load_stackoverflow) * 1963-03-26 1964-09-28
DE1260983B (de) * 1964-11-10 1968-02-08 Spirotechnique Lungengesteuertes Atemgaszufuehrungsventil fuer Atemschutzgeraete

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684066A (en) * 1951-11-13 1954-07-20 Acme Prot Equipment Company Pressure regulator structure for pressure-type gas masks
US2810386A (en) * 1952-11-07 1957-10-22 American Optical Corp Oxygen masks embodying means for ventilating goggles
GB764111A (en) * 1954-01-07 1956-12-19 Gasaccumulator Svenska Ab Face mask for under-water breathing
US3149631A (en) * 1960-02-18 1964-09-22 Gasaccumulator Svenska Ab Arrangement in breathing apparatus
NL6403328A (enrdf_load_stackoverflow) * 1963-03-26 1964-09-28
DE1260983B (de) * 1964-11-10 1968-02-08 Spirotechnique Lungengesteuertes Atemgaszufuehrungsventil fuer Atemschutzgeraete

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002166A (en) * 1975-04-23 1977-01-11 Amf Incorporated Bypassed scuba regulator
US4276877A (en) * 1979-03-05 1981-07-07 Dragerwerk Aktiengesellschaft Respiratory method and apparatus
US4361145A (en) * 1979-10-09 1982-11-30 Aga Aktiebolag Respirator mask
US4337766A (en) * 1980-05-21 1982-07-06 Chubb Panorama Limited Valves
US4467797A (en) * 1980-12-15 1984-08-28 Franke David M Breathing effort reduction device for scuba gear
US4676236A (en) * 1983-09-09 1987-06-30 Gentex Corporation Helmet airflow system
US5464009A (en) * 1993-02-01 1995-11-07 Sabre Safety Limited Valve for use in breathing apparatus
US6520177B1 (en) * 1997-06-10 2003-02-18 Intertechnique Device for providing protection against hypoxia, usable in a hostile environment
GB2398017A (en) * 2000-08-07 2004-08-11 Secr Defence Respirator mask
GB2398017B (en) * 2000-08-07 2004-12-15 Secr Defence Respirators
US20050217669A1 (en) * 2002-02-16 2005-10-06 Bee Christopher R Respirators
US7089931B2 (en) * 2002-02-16 2006-08-15 Secretary Of State For Defence Respirators
US20040000311A1 (en) * 2002-06-24 2004-01-01 Lowry Philip L. Clean gas purge for breathing gas regulator
US6966316B2 (en) * 2002-06-24 2005-11-22 Survivair Respirators, Inc. Clean gas purge for breathing gas regulator
US8651068B1 (en) 2011-07-28 2014-02-18 Brunswick Corporation Systems and devices for separating water and contaminants from fuel

Also Published As

Publication number Publication date
DE2111241B2 (de) 1973-08-09
JPS5525857B1 (enrdf_load_stackoverflow) 1980-07-09
SE336528B (enrdf_load_stackoverflow) 1971-07-05
GB1340925A (en) 1973-12-19
DE2111241A1 (de) 1972-05-25
DE2111241C3 (de) 1974-03-07
FR2084534A5 (enrdf_load_stackoverflow) 1971-12-17

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STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

AS Assignment

Owner name: INTERSPIRO AB S-181 81 LIDINGO SWEDEN A SWISS CORP

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AGA AKTIEBOLAG;REEL/FRAME:004167/0673

Effective date: 19830809

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Owner name: INTERSPIRO U.S.A., INC.,CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTERSPIRO AB;REEL/FRAME:004866/0105

Effective date: 19880224

Owner name: INTERSPIRO U.S.A., INC., 11 BUSINESS PARK DRIVE BR

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERSPIRO AB;REEL/FRAME:004866/0105

Effective date: 19880224

AS Assignment

Owner name: SPIROTECH, INC., DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERSPIRO U.S.A., INC.,;REEL/FRAME:005305/0001

Effective date: 19900129

Owner name: SPIROTECH, INC., DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERSPIRO U.S.A., INC.,;REEL/FRAME:005304/0011

Effective date: 19900129