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WO1999046007A1 - Masque facial - Google Patents

Masque facial Download PDF

Info

Publication number
WO1999046007A1
WO1999046007A1 PCT/AU1999/000125 AU9900125W WO9946007A1 WO 1999046007 A1 WO1999046007 A1 WO 1999046007A1 AU 9900125 W AU9900125 W AU 9900125W WO 9946007 A1 WO9946007 A1 WO 9946007A1
Authority
WO
WIPO (PCT)
Prior art keywords
face
mask
opening
flange
tubular body
Prior art date
Application number
PCT/AU1999/000125
Other languages
English (en)
Inventor
Goran Berndtsson
Lennart Beckman
Original Assignee
Safety Equipment Australia Pty. 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 Safety Equipment Australia Pty. Ltd. filed Critical Safety Equipment Australia Pty. Ltd.
Priority to AU28197/99A priority Critical patent/AU2819799A/en
Publication of WO1999046007A1 publication Critical patent/WO1999046007A1/fr

Links

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
    • A62B18/02—Masks
    • A62B18/025—Halfmasks

Definitions

  • This invention concerns a face mask of the type that is used with breathing apparatus. These masks either cover the entire face of a wearer (full-face masks), or just the nose and mouth (half-masks).
  • Breathing equipment is often associated with a face mask that seals against a wearers face to create an air-tight passageway between the equipment and the wearer.
  • the mask is usually made of some elastomeric material with a thin highly flexible extension around the periphery which is pressed against the face. The extension is distorted to conform to the contours of each individual face and the material of the extension ensures a seal is made.
  • a positive air pressure (slightly greater than atmosphere) may be maintained in the mask while the equipment operates. During exhalation the pressure within the mask is increased.
  • the positive pressure has the effect of pushing the mask away from the wearer's face, the increase in pressure during exhalation causes the mask to lift further, and if the high pressure gets under the extension it can lead to a break in the seal between the wearer's face and the mask.
  • Other types of breathing apparatus may maintain a low pressure in the mask, the effect is similar with this type of equipment.
  • the invention is a face mask for use with positive or negative air pressure breathing apparatus, comprising a tubular body having an opening the back for connection to an air pipe and an opening at the front to fit a wearer's face, the front opening is finished with flange which is continuous around the perimeter of the opening and forms the cross-piece of a "T", the tubular body forming the stem of the "T".
  • the flange may be narrower at the top where it passes across the bridge of the nose and down the sides of the face, and thicker at the bottom where it passes over the chin.
  • the flange extends transverse to the direction of the tubular body and is connected to the tubular body at a point between its inward and its outward edges. As a result the flange is able to flex in a rotational sense about the point of connection, in both directions.
  • the mask may be a half-mask.
  • the half-mask also has the advantage that the tubular body may have a relatively small dimension, allowing the wearer to wear goggles or spectacles over the top of the mask.
  • Figure 1 is a pictorial view of a half-mask
  • Figure 2 is a vertical section through the mask of Figure 1; and Figure 3 is a horizontal section through the mask of Figure 1.
  • the same reference numbers have been used throughout the drawings to refer to corresponding features.
  • Half-mask 1 comprises a tubular elastomeric body 2, having an opening 3 the back for connection to an air pipe and an opening 4 at the front to fit a wearer's face.
  • the front opening 4 is finished with an integral inwardly and outwardly extending flange indicated generally at 5, and which is continuous around the perimeter of the opening 4.
  • the flange 5 is narrower at the top 6 where it passes across the bridge of the nose and down the sides of the face, and thicker at the bottom 7 where it passes over the chin. However, all around the perimeter of the opening 4 the flange 5 provides a broad width for contact with the face.
  • the flange extends transverse to the direction of the tubular body 2 and is connected to the tubular body at a point 8 between its inward 9 and its outward 10 edges. As a result the flange is able to flex in a rotational sense about the point of connection 8, in both directions.
  • the flange rotates about the point of connection 8 to fit the wearer's face.
  • a pressure increase is created within the mask. The high pressure tends to push the mask away from the face.
  • it also has the effect of pushing the part of the flange that extends inwardly, more firmly against the face, so preventing separation between the mask and the face.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention concerne un masque facial du type utilisé sur des appareils respiratoires. Ceux-ci recouvrent soit le visage entier d'une personne (masques intégraux), soit uniquement le nez et la bouche (masques bucco-nasaux). Le masque selon l'invention comprend un corps tubulaire présentant une ouverture à l'arrière destinée à être connectée à une conduite d'air et une ouverture à l'avant destinée à être placée sur le visage d'une personne. L'ouverture à l'avant se termine par une jupe qui est continue le long du périmètre de l'ouverture et qui forme la branche transversale d'un T, le corps tubulaire formant la tige du T.
PCT/AU1999/000125 1998-03-09 1999-03-02 Masque facial WO1999046007A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28197/99A AU2819799A (en) 1998-03-09 1999-03-02 Face mask

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPP2227 1998-03-09
AUPP2227A AUPP222798A0 (en) 1998-03-09 1998-03-09 Face mask

Publications (1)

Publication Number Publication Date
WO1999046007A1 true WO1999046007A1 (fr) 1999-09-16

Family

ID=3806491

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1999/000125 WO1999046007A1 (fr) 1998-03-09 1999-03-02 Masque facial

Country Status (2)

Country Link
AU (1) AUPP222798A0 (fr)
WO (1) WO1999046007A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302219A3 (fr) * 2001-10-12 2003-05-07 Euromaski Oy Dispositif de protection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB309770A (en) * 1928-05-26 1929-04-18 Ronald Epey Lane Improvements relating to respirators
DE736907C (de) * 1938-11-02 1943-07-01 Auergesellschaft Ag Maske fuer Hoehenatemgeraete
FR1083879A (fr) * 1952-09-24 1955-01-13 Veedip Ltd Perfectionnements aux masques respiratories
FR1299470A (fr) * 1961-09-07 1962-07-20 Electric Storage Battery Co Masque respiratoire industriel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB309770A (en) * 1928-05-26 1929-04-18 Ronald Epey Lane Improvements relating to respirators
DE736907C (de) * 1938-11-02 1943-07-01 Auergesellschaft Ag Maske fuer Hoehenatemgeraete
FR1083879A (fr) * 1952-09-24 1955-01-13 Veedip Ltd Perfectionnements aux masques respiratories
FR1299470A (fr) * 1961-09-07 1962-07-20 Electric Storage Battery Co Masque respiratoire industriel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302219A3 (fr) * 2001-10-12 2003-05-07 Euromaski Oy Dispositif de protection
US7762256B2 (en) 2001-10-12 2010-07-27 Euromaski Oy Protective device

Also Published As

Publication number Publication date
AUPP222798A0 (en) 1998-04-02

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