EP0303090A1 - Seal for protective masks - Google Patents

Seal for protective masks Download PDF

Info

Publication number
EP0303090A1
EP0303090A1 EP88111946A EP88111946A EP0303090A1 EP 0303090 A1 EP0303090 A1 EP 0303090A1 EP 88111946 A EP88111946 A EP 88111946A EP 88111946 A EP88111946 A EP 88111946A EP 0303090 A1 EP0303090 A1 EP 0303090A1
Authority
EP
European Patent Office
Prior art keywords
face
shield
face seal
edge
fact
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.)
Granted
Application number
EP88111946A
Other languages
German (de)
French (fr)
Other versions
EP0303090B1 (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
MORGAN TECHNIQUE Ltd
MORGAN TECH Ltd
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 MORGAN TECHNIQUE Ltd, MORGAN TECH Ltd, SGE Generale Elastomeri SpA Soc filed Critical MORGAN TECHNIQUE Ltd
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.
  • 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.
  • a face seal for protective masks provided with a face-shield, characterized by the fact that siad face seal presents an annular development and is provided with means for its fit to the edge of the face-shield of the mask and with means for the tightness between said edge and the user's face, having a bellows section.
  • 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 restect to those of durability, being possible to replace periodically and easy the possibly worn face seal with another one.
  • 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 a line 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 indipendent 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 a hinge line 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)

Abstract

The face seal (1) for protective masks presents substantially a bellows structure (4) and is asked to surround the whole face of the user; the bellows structure (4) allows the face seal (1) to adapt itself easily to physically different faces, reducing the number of sizes in which the mask utilizing such face seal (1) has to be realized.

Description

  • The present invention refers to a face seal for protective masks. 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, characterized by the fact that siad face seal presents an annular development and is provided with means for its fit to the edge of the face-shield of the mask and with means for the tightness between said edge and the user's face, having a bellows section.
  • 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 restect 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 a line 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 indipendent 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 a hinge line 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 hinge line 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 (8)

1) Face seal for protective masks with face-shield, characterized by the fact that said face seal presents an annular development and is provided with means (10, 11, 12) for the fit of said face seal to the edge (2) of the face-shield (3) of the mask and with means (5, 6, 7) for the tightness between said edge (2) and the user's face, said means having a bellows section (4).
2) Face seal according to claim 1, characterized by the fact that said bellows (4) comprises at least a first (5) and a second (6) concentric annular foil joined toghether along a hinge line (7), said first foil (5) being integral to the means (10, 11) for the fit of the face seal (1) to the edge (2), said second foil (6) meeting operationally the face of the user of the mask.
3) Face seal according to claim 2, characterized by the fact that the first annular foil (5) extends itself to form a chin-latch (9).
4) Face seal according to claims 1-3, characterized by the fact that the first (5) and the second (6) annular foil diverge by a concave angle "alpha".
5) Face seal according to claim 4, characterized by the fact that the concavity of the angle "alpha" is towards the face-shield (3) of the mask.
6) Face seal according to claims 4 and 5, characterized by the fact that said angle "alpha" presents substantially constant amplitude over the development of the edge (2) of the face-shield (3).
7) Face seal according to one or more of claims 1 to 6, characterized by the fact that a connecting baffle (8) is interposed between the means for fit of the face seal to the edge (2) of the face-shield (3) and the tightness means (5, 6, 7) of the face seal itself, said connecting baffle (8) presenting its larger extension at the top of the face-shield (3) and disappearing in the median and lower zones of said face-shield (3).
8) Face seal according to one or more of claims 1 to 7, characterized by the fact that the means for fit to the edge (2) of the face-shield (3) comprise a first internal flap (10) and a second external flap (11) joined together to form a U-shaped structure surrounding the edge (2).
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
CH298287A CH671702A5 (en) 1987-08-04 1987-08-04
CH2982/87 1987-08-04

Publications (2)

Publication Number Publication Date
EP0303090A1 true EP0303090A1 (en) 1989-02-15
EP0303090B1 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 (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5050594A (en) * 1990-10-15 1991-09-24 Babb Lynn D Adjustable respirator mask apparatus
EP0853962A2 (en) 1997-01-16 1998-07-22 Ocean Reef S.r.l. Protection mask, in particular for underwater use
WO2001097893A1 (en) * 2000-06-22 2001-12-27 Resmed Ltd. Mask with gusset
FR2812819A1 (en) * 2000-08-10 2002-02-15 Robert Schegerin Face mask for respirator has rigid shell with gas feed duct and flexible lip seal with adjustable mounting
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
AU2003257274B2 (en) * 2002-09-06 2009-10-08 Resmed Limited Cushion for a respiratory mask assembly
CN104225835A (en) * 2009-04-08 2014-12-24 斯科特科技公司 Face seals for respirators and method of manufacturing respirators
US9308342B2 (en) 2005-01-12 2016-04-12 Resmed Limited Respiratory masks with gusseted cushions
CN106955408A (en) * 2005-01-12 2017-07-18 瑞思迈有限公司 Pad for patient interface
US9827391B2 (en) 2006-07-28 2017-11-28 Resmed Limited Delivery of respiratory therapy
US9907922B2 (en) 2012-09-04 2018-03-06 Fisher & Paykel Healthcare Limited Valsalva mask
US9937312B2 (en) 2006-07-28 2018-04-10 Resmed Limited Delivery of respiratory therapy with foam interface
US10434273B2 (en) 2005-10-14 2019-10-08 ResMed Pty Ltd Cushion to frame assembly mechanism
US10512745B2 (en) 2008-06-04 2019-12-24 RedMed Pty Ltd Patient interface systems
US10603456B2 (en) 2011-04-15 2020-03-31 Fisher & Paykel Healthcare Limited Interface comprising a nasal sealing portion
USD882066S1 (en) 2016-05-13 2020-04-21 Fisher & Paykel Healthcare Limited Frame for a breathing mask
US10646677B2 (en) 2003-12-31 2020-05-12 ResMed Pty Ltd Compact oronasal patient interface
US10675428B2 (en) 2007-07-30 2020-06-09 ResMed Pty Ltd Patient interface
US10786642B2 (en) 2009-01-30 2020-09-29 ResMed Pty Ltd Patient interface structure and method/tool for manufacturing same
US10835697B2 (en) 2011-04-15 2020-11-17 Fisher & Paykel Healthcare Limited Interface comprising a rolling nasal bridge portion
US10869982B2 (en) 2008-06-04 2020-12-22 ResMed Pty Ltd Patient interface systems
US10940283B2 (en) 2002-11-06 2021-03-09 ResMed Pty Ltd Mask and components thereof
US11077277B2 (en) 2008-03-04 2021-08-03 ResMed Pty Ltd Interface including a foam cushioning element
US11129953B2 (en) 2008-03-04 2021-09-28 ResMed Pty Ltd Foam respiratory mask
US11331447B2 (en) 2008-03-04 2022-05-17 ResMed Pty Ltd Mask system with snap-fit shroud
US11446461B2 (en) 2006-12-15 2022-09-20 ResMed Pty Ltd Delivery of respiratory therapy
USD969306S1 (en) 2017-02-23 2022-11-08 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
US11529486B2 (en) 2008-03-04 2022-12-20 ResMed Pty Ltd Mask system with shroud having extended headgear connector arms
US12017005B2 (en) 2015-03-04 2024-06-25 Fisher & Paykel Healthcare Limited Mask system headgear
US12070552B2 (en) 2008-09-12 2024-08-27 ResMed Pty Ltd Foam-based interfacing structure

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AUPO126596A0 (en) 1996-07-26 1996-08-22 Resmed Limited A nasal mask and mask cushion therefor
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)
US6513526B2 (en) 1996-07-26 2003-02-04 Resmed Limited Full-face mask and mask cushion therefor
ES2425573T3 (en) 2000-02-25 2013-10-16 Resmed R&D Germany Gmbh Sealing lip device for a breathing mask
DE20017940U1 (en) 2000-10-19 2000-12-28 MAP Medizintechnik für Arzt und Patient GmbH & Co KG, 82152 Planegg Breathing mask for supplying a breathing gas to a mask user and a derivation device for deriving breathing gas
DE10151984C5 (en) 2001-10-22 2008-07-17 Map Medizin-Technologie Gmbh Application device for a breathing mask arrangement
DE50214539D1 (en) 2001-10-22 2010-08-26 Map Medizin Technologie Gmbh Medical mask
DE10201682A1 (en) 2002-01-17 2003-07-31 Map Medizin Technologie Gmbh The breathing mask arrangement
NZ538698A (en) 2002-09-06 2009-07-31 Resmed Ltd Forehead pad for respiratory mask
JP4787243B2 (en) 2004-06-03 2011-10-05 レスメド・リミテッド Cushion for patient intermediate attachment
CN101389369B (en) 2004-06-16 2013-03-06 雷斯梅德有限公司 Cushion for a respiratory mask assembly
US20090126739A1 (en) 2005-10-25 2009-05-21 Resmed Limited Interchangeable Mask Assembly
US8517023B2 (en) 2007-01-30 2013-08-27 Resmed Limited Mask system with interchangeable headgear connectors
NZ578334A (en) 2007-04-19 2011-01-28 Resmed Ltd Mask frame connected to face cushion via intervening clip
EP3185944B8 (en) 2014-08-25 2024-11-06 Fisher&Paykel Healthcare Limited Respiratory mask and related portions, components or sub-assemblies
USD823455S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
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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
DE2815779A1 (en) * 1977-05-06 1978-11-16 Medizin Labortechnik Veb K Breathing mask face seal - has sealing lip concave at temples then flat on cheeks and convex in chin area

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE2815779A1 (en) * 1977-05-06 1978-11-16 Medizin Labortechnik Veb K Breathing mask face seal - has sealing lip concave at temples then flat on cheeks and convex in chin area

Cited By (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5050594A (en) * 1990-10-15 1991-09-24 Babb Lynn D Adjustable respirator mask apparatus
EP0853962A2 (en) 1997-01-16 1998-07-22 Ocean Reef S.r.l. Protection mask, in particular for underwater use
US8978653B2 (en) * 2000-06-22 2015-03-17 Resmed Limited Mask with gusset
WO2001097893A1 (en) * 2000-06-22 2001-12-27 Resmed Ltd. Mask with gusset
EP2428246A3 (en) * 2000-06-22 2017-03-22 ResMed Limited Mask with gusset
EP1292351A1 (en) * 2000-06-22 2003-03-19 Resmed Ltd. Mask with gusset
US9522246B2 (en) 2000-06-22 2016-12-20 Resmed Limited Mask with gusset
EP1292351A4 (en) * 2000-06-22 2009-08-19 Resmed Ltd Mask with gusset
FR2812819A1 (en) * 2000-08-10 2002-02-15 Robert Schegerin Face mask for respirator has rigid shell with gas feed duct and flexible lip seal with adjustable mounting
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
CN101862496B (en) * 2002-09-06 2014-03-12 雷斯梅德有限公司 Cushion for respiratory mask assembly
AU2003257274B2 (en) * 2002-09-06 2009-10-08 Resmed Limited Cushion for a respiratory mask assembly
US10940283B2 (en) 2002-11-06 2021-03-09 ResMed Pty Ltd Mask and components thereof
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US10449315B2 (en) 2005-01-12 2019-10-22 ResMed Pty Ltd Respiratory masks with gusseted cushions
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US10456544B2 (en) 2005-01-12 2019-10-29 ResMed Pty Ltd Cushion for patient interface
US9308342B2 (en) 2005-01-12 2016-04-12 Resmed Limited Respiratory masks with gusseted cushions
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US10434273B2 (en) 2005-10-14 2019-10-08 ResMed Pty Ltd Cushion to frame assembly mechanism
US11497873B2 (en) 2006-07-28 2022-11-15 ResMed Pty Ltd Delivery of respiratory therapy using a detachable manifold
US10500362B2 (en) 2006-07-28 2019-12-10 ResMed Pty Ltd Delivery of respiratory therapy using collapsible inlet conduits
US10556080B2 (en) 2006-07-28 2020-02-11 ResMed Pty Ltd Mask system comprising a combined air delivery and stabilizing structure
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US10507297B2 (en) 2006-07-28 2019-12-17 ResMed Pty Ltd Delivery of respiratory therapy
US9937312B2 (en) 2006-07-28 2018-04-10 Resmed Limited Delivery of respiratory therapy with foam interface
US11376384B2 (en) 2006-07-28 2022-07-05 ResMed Pty Ltd Delivery of respiratory therapy using conduits with varying wall thicknesses
US10512744B2 (en) 2006-07-28 2019-12-24 ResMed Pty Ltd Mask system comprising a combined air delivery and stabilizing structure
US11446461B2 (en) 2006-12-15 2022-09-20 ResMed Pty Ltd Delivery of respiratory therapy
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US11129953B2 (en) 2008-03-04 2021-09-28 ResMed Pty Ltd Foam respiratory mask
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US11369766B2 (en) 2008-06-04 2022-06-28 Resmed Pty Ltd. Patient interface systems
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CN104225835B (en) * 2009-04-08 2018-06-05 斯科特科技公司 The method of respirator, the face seal of respirator cover body and manufacture respirator
CN104225835A (en) * 2009-04-08 2014-12-24 斯科特科技公司 Face seals for respirators and method of manufacturing respirators
US10835697B2 (en) 2011-04-15 2020-11-17 Fisher & Paykel Healthcare Limited Interface comprising a rolling nasal bridge portion
US10603456B2 (en) 2011-04-15 2020-03-31 Fisher & Paykel Healthcare Limited Interface comprising a nasal sealing portion
US9907923B2 (en) 2012-09-04 2018-03-06 Fisher & Paykel Healthcare Limited Valsalva mask
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USD1010103S1 (en) 2016-05-13 2024-01-02 Fisher & Paykel Healthcare Limited Breathing mask assembly including a frame, headgear, and seal
USD969306S1 (en) 2017-02-23 2022-11-08 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD994876S1 (en) 2017-02-23 2023-08-08 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly

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EP0303090B1 (en) 1992-04-22
CH671702A5 (en) 1989-09-29
DE3870351D1 (en) 1992-05-27

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