EP0303090B1 - Seal for protective masks - Google Patents

Seal for protective masks Download PDF

Info

Publication number
EP0303090B1
EP0303090B1 EP19880111946 EP88111946A EP0303090B1 EP 0303090 B1 EP0303090 B1 EP 0303090B1 EP 19880111946 EP19880111946 EP 19880111946 EP 88111946 A EP88111946 A EP 88111946A EP 0303090 B1 EP0303090 B1 EP 0303090B1
Authority
EP
European Patent Office
Prior art keywords
face
face seal
shield
annular
seal
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
EP19880111946
Other languages
German (de)
French (fr)
Other versions
EP0303090A1 (en
Inventor
Giovanni Mosca Tenna
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.)
SGE Generale Elastomeri SpA Soc
Original Assignee
SGE Generale Elastomeri SpA Soc
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 SGE Generale Elastomeri SpA Soc filed Critical SGE Generale Elastomeri SpA Soc
Publication of EP0303090A1 publication Critical patent/EP0303090A1/en
Application granted granted Critical
Publication of EP0303090B1 publication Critical patent/EP0303090B1/en
Expired 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

Definitions

  • the present invention refers to a face seal for protective masks.
  • a face seal comprising the features defined in the first part of Claim 1 is disclosed in US-A-3 545 436.
  • the protective masks at present in use comprise a face-shield which acts both as support of the ocular surface and of the filter with which the mask is provided and as a seal on the user's face.
  • the face-shield is made by a single piece of rubber which is sharpened at the edge in order to be particularly flexible and soft to adhere hermetically to the face with as much comfort as possible, acting as a seal.
  • the rubber of the face-shield is on the contrary thick and presents a limited flexibility so that it supports rigidly the filter(s) and the ocular surface of the mask.
  • the object of the present invention is to provide a face seal associable to a face-shield, structured in whatsoever way, for protective masks, able to avoid the above mentioned drawbacks, namely to give the necessary tightness without weariness or inflammation of the circumferential portion of the face with which it interacts; said face seal is not affected by the deformations of the face-shield of the mask caused by the weight of the filter(s) and of the ocular surface.
  • Another object of the present invention is to allow many people to use the same mask reducing the number of the sizes necessary to satisfy a population of persons.
  • the face seal presents an annular development which allows it to anchor to an edge 2 of a face-shield 3 for instance of rigid type.
  • the face seal 1 comprises fitting means cooperating with the edge 2 and tightness means operating between said edge 2 and the user's face (not shown).
  • the tightness means of the face seal comprise a bellows 4 in which a first 5 and a second 6 annular foil are reciprocally hinged along an annular edge 7 so that they form between themselves an angle "alpha" with concavity towards the interior of the face-shield 3.
  • the second annular foil 6 extends itself to form a chin-latch by the lower part of the face-shield.
  • the means for the fit of the face seal 1 to the edge 2 of the face-shield 3 comprise a couple of annular flaps (internal 10 and external 11) joined together to form a U-shaped structure fitted on the edge 2 of the face-shield 3.
  • the external flap 11 is pressed against the edge 2 by a metallic hooping 12 made, according to the requirements, even by many pieces and cooperating also with a step 13 associated to said edge 2.
  • the face seal 1 can be fitted, with all the related advantages, also to a soft face-shield with the sole condition that the edge 2 is rigid and therefore independent from the means which fit it to the face-shield 3.
  • the second annular foil 6 comes in contact with the user's face (not shown) and rotates elastically around the annular edge approaching the first foil 5.
  • the concave angle "alpha" between said foils reduces itself till the elastic force generated by the face seal 1 balances the elastic force produced by the means of fit of the mask to the user's head (not shown); said means are usually formed by elastic belts connected directly to the face-shield 3 of the mask.
  • the connecting baffle 8 is present and cooperates to balance said force by its deformation.

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)

Description

  • The present invention refers to a face seal for protective masks. A face seal comprising the features defined in the first part of Claim 1 is disclosed in US-A-3 545 436. The protective masks at present in use comprise a face-shield which acts both as support of the ocular surface and of the filter with which the mask is provided and as a seal on the user's face. The face-shield is made by a single piece of rubber which is sharpened at the edge in order to be particularly flexible and soft to adhere hermetically to the face with as much comfort as possible, acting as a seal. Far from the edge the rubber of the face-shield is on the contrary thick and presents a limited flexibility so that it supports rigidly the filter(s) and the ocular surface of the mask.
  • Therefore the face-shields of the current protective masks have to be realized trying to mediate the requirements of stiffness and of tightness and comfort which are obviously in contrast.
  • The object of the present invention is to provide a face seal associable to a face-shield, structured in whatsoever way, for protective masks, able to avoid the above mentioned drawbacks, namely to give the necessary tightness without weariness or inflammation of the circumferential portion of the face with which it interacts; said face seal is not affected by the deformations of the face-shield of the mask caused by the weight of the filter(s) and of the ocular surface.
  • Another object of the present invention is to allow many people to use the same mask reducing the number of the sizes necessary to satisfy a population of persons.
  • Such objects are achieved by a face seal for protective masks provided with a face-shield as defined in Claim 1.
  • The main advantages obtained by the use of such face seal on protective masks are the following:
    • improved comfort of use of the mask with the highest guarantee of tightness;
    • reduction of the number of necessary sizes with consequent standardization of the production of the masks;
    • possibility to make the face seal by a type of rubber or other materials which privilege the characteristics of anti-allergy and softness in respect to those of durability, being possible to replace periodically and easy the possibly worn face seal with another one.
  • The invention is illustrated, just for exemplification but not in a limitative manner, in the figures of the attached tables where:
    • fig. 1 is a front view of the face seal mounted on a face-shield of the rigid type of a protective mask;
    • fig. 2 is a cutaway view taken along the line II-II of fig. 1;
    • fig. 3 is a section executed along the line III-III of fig. 2.
  • With reference to the above mentioned figures the face seal, generically quoted as 1, presents an annular development which allows it to anchor to an edge 2 of a face-shield 3 for instance of rigid type.
  • The face seal 1 comprises fitting means cooperating with the edge 2 and tightness means operating between said edge 2 and the user's face (not shown).
  • The tightness means of the face seal comprise a bellows 4 in which a first 5 and a second 6 annular foil are reciprocally hinged along an annular edge 7 so that they form between themselves an angle "alpha" with concavity towards the interior of the face-shield 3.
  • The amplitude of the angle "alpha" is almost constant over the whole development of the face seal 1 close to the edge 2 of the face-shield 3, whereas the position of the whole of the two annular foils 5 and 6 with reference to the fitting means (and therefore to the edge 2 of the face-shield 3 included inside said means) is not constant. This is due to a connecting baffle 8 which reaches its largest extension at the top of the face-shield decreasing gradually up to disappear in the median and lower zones of the face-shield (see section III-III of fig. 2).
  • The second annular foil 6 extends itself to form a chin-latch by the lower part of the face-shield.
  • The means for the fit of the face seal 1 to the edge 2 of the face-shield 3 comprise a couple of annular flaps (internal 10 and external 11) joined together to form a U-shaped structure fitted on the edge 2 of the face-shield 3.
  • The external flap 11 is pressed against the edge 2 by a metallic hooping 12 made, according to the requirements, even by many pieces and cooperating also with a step 13 associated to said edge 2.
  • The face seal 1 can be fitted, with all the related advantages, also to a soft face-shield with the sole condition that the edge 2 is rigid and therefore independent from the means which fit it to the face-shield 3.
  • Wearing a mask provided with the face seal 1, the second annular foil 6 comes in contact with the user's face (not shown) and rotates elastically around the annular edge approaching the first foil 5. The concave angle "alpha" between said foils reduces itself till the elastic force generated by the face seal 1 balances the elastic force produced by the means of fit of the mask to the user's head (not shown); said means are usually formed by elastic belts connected directly to the face-shield 3 of the mask.
  • Where the force produced by the means fitting the mask to the user's face is greater, the connecting baffle 8 is present and cooperates to balance said force by its deformation.
  • It is obvious that the rotation of the second annular foil 6 around the annular edge 7 with reference to the first annular foil 5, with the consequent approaching of the two foils forming the bellows 4, is also influenced by the dimensions of the user's face, which can vary without the arising of tightness problems.

Claims (3)

  1. Face seal for protective masks with face shield, comprising annular flaps (10,11) fastenable onto an annular edge (2) of the face shield (3) and connected to first and second annular foils (5 resp.6) hingedly connected together along an annular edge (7) of the face seal (1) to form a bellows arrangement, wherein said foils (5,6) form between each other an acute angle ( α ) and said second foil (6) extends in the lower part of the face seal (1) to form a chin-latch (9), characterised in that said annular edge (7) of the face seal (1) is disposed at the side of the face seal (1) that is opposite to the face shield (3) and the acute angle ( α ) opens toward the interior of the face shield (3), whereby the second foil (6) extends from said annular edge (7) toward the interior of the face shield (3).
  2. Face seal according to claim 1, characterised in that the acute angle ( α ) has a substantially constant amplitude over the development of the annular edge (7) of the face seal (1).
  3. Face seal according to claim 1 or 2, characterised in that between the flaps (10,11) and the first annular foil (5) there is provided a connecting baffle (8) having a largest extension at the top portion of the face seal (1) and a gradually decreasing extension disappearing in the median and lower portions of the face seal (1).
EP19880111946 1987-08-04 1988-07-25 Seal for protective masks Expired EP0303090B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2982/87 1987-08-04
CH298287A CH671702A5 (en) 1987-08-04 1987-08-04

Publications (2)

Publication Number Publication Date
EP0303090A1 EP0303090A1 (en) 1989-02-15
EP0303090B1 true EP0303090B1 (en) 1992-04-22

Family

ID=4245999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880111946 Expired EP0303090B1 (en) 1987-08-04 1988-07-25 Seal for protective masks

Country Status (3)

Country Link
EP (1) EP0303090B1 (en)
CH (1) CH671702A5 (en)
DE (1) DE3870351D1 (en)

Cited By (37)

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US6513526B2 (en) 1996-07-26 2003-02-04 Resmed Limited Full-face mask and mask cushion therefor
US6581602B2 (en) 1996-07-26 2003-06-24 Resmed Limited Nasal mask and mask cushion therefor
WO2004022146A1 (en) * 2002-09-06 2004-03-18 Resmed Limited Cushion for a respiratory mask assembly
US6772760B2 (en) 2000-06-22 2004-08-10 Resmed Limited Mask with gusset
USD498529S1 (en) 1996-07-26 2004-11-16 Resmed Limited Portion of a cushion for use with a mask assembly in the application of continuous positive airway pressure (CPAP)
US7827990B1 (en) 2000-02-25 2010-11-09 Map Medizin-Technologie Gmbh Sealing lip device for a respiratory mask, respiratory mask and a method and a mould for producing the same
US7942148B2 (en) 2003-12-31 2011-05-17 Resmed Limited Compact oronasal patient interface
US8291906B2 (en) 2008-06-04 2012-10-23 Resmed Limited Patient interface systems
US8297285B2 (en) 2006-07-28 2012-10-30 Resmed Limited Delivery of respiratory therapy
US8353294B2 (en) 2004-06-16 2013-01-15 Resmed Limited Respiratory mask assembly
US8371301B2 (en) 2000-10-19 2013-02-12 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US8402972B2 (en) 2002-01-17 2013-03-26 Resmed R&D Germany Gmbh Breathing mask arrangement and a forehead support device for same
US8479738B2 (en) 2001-10-22 2013-07-09 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US8485192B2 (en) 2005-01-12 2013-07-16 Resmed Limited Cushion for patient interface
US8517023B2 (en) 2007-01-30 2013-08-27 Resmed Limited Mask system with interchangeable headgear connectors
US8522784B2 (en) 2008-03-04 2013-09-03 Resmed Limited Mask system
US8807135B2 (en) 2004-06-03 2014-08-19 Resmed Limited Cushion for a patient interface
US8869797B2 (en) 2007-04-19 2014-10-28 Resmed Limited Cushion and cushion to frame assembly mechanism for patient interface
US8869798B2 (en) 2008-09-12 2014-10-28 Resmed Limited Foam-based interfacing structure method and apparatus
US8875710B2 (en) 2001-10-22 2014-11-04 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
US8905031B2 (en) 2008-06-04 2014-12-09 Resmed Limited Patient interface systems
US8944061B2 (en) 2005-10-14 2015-02-03 Resmed Limited Cushion to frame assembly mechanism
US9072853B2 (en) 2001-09-07 2015-07-07 Resmed Limited Forehead pad for respiratory mask
US9162034B2 (en) 2006-07-28 2015-10-20 Resmed Limited Delivery of respiratory therapy
US9381316B2 (en) 2005-10-25 2016-07-05 Resmed Limited Interchangeable mask assembly
US9480809B2 (en) 2007-07-30 2016-11-01 Resmed Limited Patient interface
US9987450B2 (en) 2008-03-04 2018-06-05 Resmed Limited Interface including a foam cushioning element
USD823454S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD823455S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD824020S1 (en) 2017-02-23 2018-07-24 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
US10166357B2 (en) 2006-12-15 2019-01-01 Resmed Limited Delivery of respiratory therapy with nasal interface
US10220171B2 (en) 2011-04-15 2019-03-05 Fisher & Paykel Healthcare Limited Interface comprising a rolling nasal bridge portion
US10307554B2 (en) 2002-11-06 2019-06-04 Resmed Limited Mask and components thereof
US10518054B2 (en) 2014-08-25 2019-12-31 Fisher & Paykel Healthcare Limited Respiratory mask and related portions, components or sub-assemblies
US11559647B2 (en) 2011-04-15 2023-01-24 Fisher & Paykel Healthcare Limited Interface comprising a nasal sealing portion
US11833277B2 (en) 2008-03-04 2023-12-05 ResMed Pty Ltd Mask system with snap-fit shroud
US11969552B2 (en) 2022-06-28 2024-04-30 ResMed Pty Ltd Mask system with radially positioned vent holes

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US5050594A (en) * 1990-10-15 1991-09-24 Babb Lynn D Adjustable respirator mask apparatus
IT1289907B1 (en) 1997-01-16 1998-10-19 Guido Gamberini PROTECTION MASK IN PARTICULAR FOR UNDERWATER USE
FR2812819B1 (en) * 2000-08-10 2003-09-26 Robert Schegerin SYSTEM FOR ATTACHING AND ADJUSTING THE POSITION OF A RESPIRATORY MASK
US6626178B2 (en) * 2001-01-12 2003-09-30 Kirby Morgan Dive Systems, Inc. Full face mask with face seal and removable adaptors allowing full access to separate spaces
WO2006074515A1 (en) 2005-01-12 2006-07-20 Resmed Limited Respiratory masks with gusseted cushions
EP2259827B1 (en) 2008-03-04 2019-10-30 ResMed Pty Ltd A foam respiratory mask
EP2213324B1 (en) 2009-01-30 2016-07-27 ResMed R&D Germany GmbH Patient interface structure and method/tool for manufacturing same
US8955516B2 (en) * 2009-04-08 2015-02-17 Scott Technologies, Inc. Face seals for respirators and method of manufacturing respirators
WO2014038959A1 (en) 2012-09-04 2014-03-13 Fisher & Paykel Healthcare Limited Valsalva mask
USD882066S1 (en) 2016-05-13 2020-04-21 Fisher & Paykel Healthcare Limited Frame for a breathing mask

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US3545436A (en) * 1967-07-21 1970-12-08 Automatic Sprinkler Corp Face seal
FR2178293A5 (en) * 1972-03-27 1973-11-09 Fernez Et Cie Ets
US4069516A (en) * 1976-07-21 1978-01-24 A-T-O Inc. Breathing face mask
DD131719A1 (en) * 1977-05-06 1978-07-19 Steffen Zemelka Respirator

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US7950392B2 (en) 1996-07-26 2011-05-31 Resmed Limited Cushion and mask therefor
US6581602B2 (en) 1996-07-26 2003-06-24 Resmed Limited Nasal mask and mask cushion therefor
US6634358B2 (en) 1996-07-26 2003-10-21 Resmed Limited Nasal mask cushion assembly
US6701927B2 (en) 1996-07-26 2004-03-09 Resmed Limited Full-face mask and mask cushion therefor
US6513526B2 (en) 1996-07-26 2003-02-04 Resmed Limited Full-face mask and mask cushion therefor
US9463295B2 (en) 1996-07-26 2016-10-11 Resmed Limited Mask and mask cushion therefor
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US8636006B2 (en) 1996-07-26 2014-01-28 Resmed Limited Mask
US8813748B2 (en) 1996-07-26 2014-08-26 Resmed Limited Full-face mask and mask cushion therefor
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US8056561B2 (en) 1996-07-26 2011-11-15 Resmed Limited Full-face mask and mask cushion therefor
US7827990B1 (en) 2000-02-25 2010-11-09 Map Medizin-Technologie Gmbh Sealing lip device for a respiratory mask, respiratory mask and a method and a mould for producing the same
US9242062B2 (en) 2000-02-25 2016-01-26 Resmed R&D Germany Gmbh Breathing mask and a sealing lip device for a breathing mask
US8820327B2 (en) 2000-02-25 2014-09-02 Resmed R&D Germany Gmbh Sealing lip device for a breathing mask, a breathing mask and a method and a mold for producing same
US8931484B2 (en) 2000-02-25 2015-01-13 Resmed R&D Germany Gmbh Sealing lip device for a respiratory mask, respiratory mask and a method and mould for producing the same
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DE3870351D1 (en) 1992-05-27
EP0303090A1 (en) 1989-02-15
CH671702A5 (en) 1989-09-29

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