EP0252891A1 - Ausatmungsventil für Schutzmasken - Google Patents

Ausatmungsventil für Schutzmasken Download PDF

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Publication number
EP0252891A1
EP0252891A1 EP87850216A EP87850216A EP0252891A1 EP 0252891 A1 EP0252891 A1 EP 0252891A1 EP 87850216 A EP87850216 A EP 87850216A EP 87850216 A EP87850216 A EP 87850216A EP 0252891 A1 EP0252891 A1 EP 0252891A1
Authority
EP
European Patent Office
Prior art keywords
valve
exhalation
membrane
valve device
exhalation valve
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.)
Withdrawn
Application number
EP87850216A
Other languages
English (en)
French (fr)
Inventor
Valter Söderberg
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.)
Horda Gummifabrik AB
Original Assignee
Horda Gummifabrik 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
Application filed by Horda Gummifabrik AB filed Critical Horda Gummifabrik AB
Publication of EP0252891A1 publication Critical patent/EP0252891A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/10—Valves

Definitions

  • the present invention relates to an exhalation valve device for use in protective masks.
  • the object of the present invention is to eliminate the drawbacks of this known valve and instead provide an exhalation valve means for protective masks which has low breathing resistance, opens and closes quickly and causes the least possible distortion of speech.
  • exhalation valve comprising a neck portion for sealing connection to the protective mask, and a valve portion connected to the neck portion, said valve portion having at least one valve member permitting the passage of exhaled air, with substantially no change of direction. This gives considerably enhanced reproduction of speech in comparison with known exhalation valves.
  • the valve member consists of a valve seat having a through-flow opening, a border surrounding the opening, an attachment portion for a valve membrane, and a valve membrane cooperating with said valve seat, the membrane in closed position sealing against the border of the valve seat, the attachment portion of the valve seat being formed in conjunction with the border, and wherein the valve membrane is joined at an edge portion to the attachment portion, and also wherein the valve seat is arranged at an angle to the flow direction of the enhaled air, with the attachment portion applied nearest to the neck portion.
  • valve offers extremely low exhalation resistance since the force required to open the valve membrane on the side opposite the attachment portion is slight - several times less than the force required to open a valve membrane of equivalent size which is centrally attached.
  • the function is additionally improved by arranging two valve members in the valve portion.
  • the exhalation valve device is preferably provided with two walls converging towards each other and at least partially flat, each having a valve member in the flat portion.
  • an air column should be provided between valve and surrounding atmosphere. This can of course be achieved by conventional means in the form of a part provided with a flow channel and arranged outside the exhalation valve with the valve member.
  • a speech amplifier also known as a speaker may be used to create the air column.
  • the speaker is suitably designed to be applied over the exhalation valve device and to be connected to the protective mask in one step together with the exhalation valve device.
  • the exhalation valve device and the speaker may be shaped with a circular neck portion and is/are thus connected to the protective mask by passing the part of the protective mask which surrounds the connection opening, over said neck portion and clamping it with a clamp means.
  • FIG. 1 shows a perspective view of an exhalation valve device according to the present invention, designated 1.
  • the device comprises a neck portion 2 and a valve portion 3.
  • the neck portion is preferably circular and may be provided with a collar-like exterior 4, as shown in the drawings, to allow simple, sealing connection to a protective mask and/or an inner mask.
  • the walls of the valve portion 3 extend to a point 5, two flat wall sections located opposite each other converging towards each other and being formed as valve- seats.
  • a membrane 6 of elastomeric material which in closed position is in contact around its entire periphery with the border, not shown in detail, of the valve seat.
  • the attachment portion 7 of the membrane and the bevelled edge 8 have increased material thickness, thus improving abutment.
  • the valve membrane 6 is secured in the valve seat by the edge located nearest to the inlet and for exhaled air and its active part is thus furthest from the inlet opening, i.e. the neck portion 2.
  • Figure 2 shows the valve device seen through the neck portion.
  • the two valve seats are designated 9 and 10 and are provided nearest the neck portion with attachment portions having openings for insertion of attachment studs arranged on the valve membrane.
  • Said attachment studs are preferably provided with upsets which are passed through the openings so that, due to the inherent elasticity of the material, the membranes are held in sealing contact with respective attachment portions. Said upsets are designed 13, 14, 15 and 16 in the drawings.
  • the valve seats are also provided with support ribs 17 and 18, reinforcing the valve seats and preventing the valve membranes from being drawn through the seats.
  • the support ribs are preferably arranged furthest apart at the edge opposite the attachment portion, i.e. where the exhaled air passes, at least during the initial opening stage.
  • Figure 2 thus illustrates the essence of the invention: that the exhaled air can pass straight through the exhalation valve device with the least possible voice distortion.
  • the valve arrangement also offers minimal opening resistance.
  • valve membrane may be attached in any suitable manner and only one of several feasible arrangements is shown in the drawings.
  • the attachment portions on the valve seats might, for instance, be in the form of studs to fit corresponding openings in the valve membranes.
  • Figure 3a shows a speaker 19 intended to be fitted over the exhalation valve device according to the invention and, together with this, to be connected in sealing manner to the protective mask.
  • the speaker comprises an area 20 to hold the exhalation valve device.
  • Figure 3b shows the speaker seen from the opposite side, i.e. the outlet side.
  • the speaker cover 21 is designed, together with the valve space 20, tb form an annular column opening at the bottom of the cover 21. This column forms an air column or "buffer" which prevents the valve device from coming into contact with contaminated air.
  • the use of said speaker together with the exhalation valve device according to the invention further enhances the advantages of the device according to the invention and extremely good voice reproduction is achieved.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Check Valves (AREA)
EP87850216A 1986-07-03 1987-07-01 Ausatmungsventil für Schutzmasken Withdrawn EP0252891A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8602962A SE454136B (sv) 1986-07-03 1986-07-03 Utandningsventilanordning for skyddsmask
SE8602962 1986-07-03

Publications (1)

Publication Number Publication Date
EP0252891A1 true EP0252891A1 (de) 1988-01-13

Family

ID=20365012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87850216A Withdrawn EP0252891A1 (de) 1986-07-03 1987-07-01 Ausatmungsventil für Schutzmasken

Country Status (4)

Country Link
EP (1) EP0252891A1 (de)
FI (1) FI872916A (de)
NO (1) NO872761L (de)
SE (1) SE454136B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004020883A1 (en) * 2002-08-28 2004-03-11 Louis M. Gerson Co., Inc. Mask and spherically configured valve
US6883518B2 (en) 2001-06-25 2005-04-26 3M Innovative Properties Company Unidirectional respirator valve
US7849856B2 (en) 2001-06-25 2010-12-14 3M Innovative Properties Company Respirator valve
CN102160917A (zh) * 2010-02-23 2011-08-24 德拉格安全股份两合公司 用于呼吸保护产品的方向阀

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1326966A (en) * 1920-01-06 Respirator-valve
US1853373A (en) * 1928-03-15 1932-04-12 Monro Randolph Respiratory valve
DE738391C (de) * 1939-06-21 1943-08-13 Auergesellschaft Ag Ventil, insbesondere Atemventil fuer Atemschutzgeraete
GB660095A (en) * 1945-12-11 1951-10-31 Paul Charbonnel Improvements in or relating to protecting masks or respirators
FR2367968A1 (fr) * 1976-10-12 1978-05-12 Motobecane Ateliers Clapet d'admission

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1326966A (en) * 1920-01-06 Respirator-valve
US1853373A (en) * 1928-03-15 1932-04-12 Monro Randolph Respiratory valve
DE738391C (de) * 1939-06-21 1943-08-13 Auergesellschaft Ag Ventil, insbesondere Atemventil fuer Atemschutzgeraete
GB660095A (en) * 1945-12-11 1951-10-31 Paul Charbonnel Improvements in or relating to protecting masks or respirators
FR2367968A1 (fr) * 1976-10-12 1978-05-12 Motobecane Ateliers Clapet d'admission

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6883518B2 (en) 2001-06-25 2005-04-26 3M Innovative Properties Company Unidirectional respirator valve
US7302951B2 (en) 2001-06-25 2007-12-04 3M Innovative Properties Company Unidirectional respirator valve
US7849856B2 (en) 2001-06-25 2010-12-14 3M Innovative Properties Company Respirator valve
WO2004020883A1 (en) * 2002-08-28 2004-03-11 Louis M. Gerson Co., Inc. Mask and spherically configured valve
CN102160917A (zh) * 2010-02-23 2011-08-24 德拉格安全股份两合公司 用于呼吸保护产品的方向阀
DE102010008923A1 (de) * 2010-02-23 2011-08-25 Dräger Safety AG & Co. KGaA, 23560 Richtungsventil für ein Atemschutzprodukt
CN102160917B (zh) * 2010-02-23 2013-08-21 德拉格安全股份两合公司 用于呼吸保护产品的方向阀
DE102010008923B4 (de) * 2010-02-23 2013-09-19 Dräger Safety AG & Co. KGaA Richtungsventil für ein Atemschutzprodukt

Also Published As

Publication number Publication date
SE454136B (sv) 1988-04-11
SE8602962D0 (sv) 1986-07-03
FI872916A (fi) 1988-01-04
NO872761D0 (no) 1987-07-01
FI872916A0 (fi) 1987-07-01
NO872761L (no) 1988-01-04

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19880630

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Effective date: 19890609

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Inventor name: SOEDERBERG, VALTER