EP3445457A1 - Masque respiratoire et membrane destinée à ce masque - Google Patents

Masque respiratoire et membrane destinée à ce masque

Info

Publication number
EP3445457A1
EP3445457A1 EP17717185.7A EP17717185A EP3445457A1 EP 3445457 A1 EP3445457 A1 EP 3445457A1 EP 17717185 A EP17717185 A EP 17717185A EP 3445457 A1 EP3445457 A1 EP 3445457A1
Authority
EP
European Patent Office
Prior art keywords
reinforcing
valve
valve membrane
respiratory
membrane
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Withdrawn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
EP17717185.7A
Other languages
German (de)
English (en)
Inventor
Wolf Wagner
Manfred Schuster
Florian Kühnlein
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.)
Uvex Arbeitsschutz GmbH
Original Assignee
Uvex Arbeitsschutz GmbH
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 Uvex Arbeitsschutz GmbH filed Critical Uvex Arbeitsschutz GmbH
Publication of EP3445457A1 publication Critical patent/EP3445457A1/fr
Withdrawn legal-status Critical Current

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
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/10—Valves
    • 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

  • the invention relates to a respiratory mask for filtering respiratory air of a wearer of the respiratory mask. Furthermore, the invention is directed to a valve membrane for a respirator.
  • Respirators are well known by public prior use and find particular application in the field of occupational safety, with other applications are naturally possible. Respirators have proven themselves in practice.
  • a disadvantage of the respirators of the prior art is that the breathing, in particular exhalation, when wearing the respirators is often perceived by the wearer as unpleasant or difficult for the wearer.
  • Each valve comprises a disk-shaped, flexible valve closure body.
  • US 2012/0167890 AI discloses respirators with exhalation valves. Each exhalation valve has a membrane with specially adapted areas.
  • a respiratory protective device with an exhalation valve which has a flexible membrane with a reinforcing arrangement.
  • the invention has for its object to provide a respirator that allows the wearer when wearing the respirator a particularly simple or natural breathing, especially exhalation. Furthermore, the respirator should offer extremely high safety. A corresponding valve membrane for a respirator should also be supplied.
  • the respiratory mask comprises at least one respiratory valve arrangement, by which in particular the inhalation and / or exhalation of the wearer takes place when the respiratory mask is worn. Due to the reinforcing structure of the valve membrane, a particularly simple breathing via the at least one breathing valve arrangement is possible, wherein at the same time an extremely secure or fluid-tight closing of the at least one breathing opening or of at least one breathing channel can be achieved through the valve membrane.
  • valve membrane is triangular.
  • triangular here also means a substantially triangular shape with, for example, at least one rounded corner and / or at least one curved side or edge.
  • gain slants there are a variety of gain slants available. For example, between five and thirty reinforcing slants are present.
  • V-shaped or "V-reinforcement arrangement” is also understood to mean essentially V-shaped arrangements in which, for example, at least one of the V-legs extends in a curved manner and / or is formed from individual sections extending at an angle to one another , In addition, it also means, for example, arrangements with a curved V-tip.
  • V-reinforcement arrangements There are several, in particular between three and fifteen, of the V-reinforcement arrangements, with at least two, more preferably some, more preferably most, more preferably all, the V-reinforcement arrangements.
  • Reinforcement assemblies are connected to each other via at least one lying in the valve diaphragm center plane reinforcing connecting body of the reinforcing structure. Conveniently, there is exactly one reinforcing connector body.
  • the reinforcing connecting body may take any shape.
  • the connecting web expediently extends along the valve membrane center plane or symmetry plane. It advantageously forms a stem to which at least some, more preferably several, more preferably all, laterally join the reinforcing slanted body obliquely.
  • the minimum stiffness of the reinforcing structure is preferably determined by a requirement for a minimum stiffness of the valve membrane. This is preferably chosen so that always, for example, even with downwardly inclined valve diaphragm, the valve diaphragm in its closed position against the valve seat body fluid-tight and the at least one breathing port closes completely fluid-tight.
  • the valve membrane preferably does not hang through. It is advantageous if the valve membrane has a Shore A hardness between 45 and 75.
  • valve membrane has a protrusion or pre-tension. This ensures, in particular, that the valve membrane has a certain rigidity and, regardless of its orientation, for example due to the prevailing gravity does not hang down.
  • the reinforcing structure is an integral part of the valve membrane. It is expedient if the reinforcing structure is completely coherent.
  • valve diaphragm is conveniently symmetrical to the valve diaphragm mid-plane, which preferably divides the valve diaphragm into two equal halves and / or extends perpendicular to a valve diaphragm main plane in which the valve diaphragm is in a planar condition.
  • the valve diaphragm midplane thus beneficially forms a plane of symmetry.
  • the valve membrane has a thickness perpendicular to the valve diaphragm main plane which is between 0.3 mm and 0.5 mm. Otherwise, the valve membrane preferably has a thickness which is approximately half the thickness of the reinforcing structure or between 0.1 mm and 0.3 mm.
  • the reinforcing structure preferably has a uniform thickness.
  • the thickness of the valve diaphragm spaced from the reinforcing structure is also preferably uniform. It is advantageous if the valve membrane at least partially has a varying thickness perpendicular to the valve diaphragm main plane. In particular, the thickness of the valve diaphragm decreases from one end of the valve diaphragm to an opposite end of the valve diaphragm.
  • the thickness at the central connecting web decreases from a peripheral connecting field towards the tip of the valve membrane, desirably from 0.4 mm to 0.6 mm to 0.25 mm to 0.45 mm.
  • the at least one reinforcing oblique body is preferably designed web-like. It preferably has substantially at least mostly uniform width or width in the valve diaphragm main plane.
  • the at least one reinforcing helical body encloses an angle with the valve membrane mid-plane which is between 10 ° and 50 °, more preferably between 20 ° and 40 °.
  • valve diaphragm is a molded part molded from a plastic material.
  • a valve membrane is inexpensive and accurate to produce.
  • the valve membrane is made by hot stamping or stamping, which also allows a cost-effective and accurate manufacture of the same.
  • the valve membrane is formed, for example, of silicone, TPU (thermoplastic polyurethane) or TPR (thermoplastic rubber). It is advantageous if the at least one breathing valve arrangement is designed as a one-way valve arrangement.
  • the breathing valve arrangement is preferably designed as an exhalation valve arrangement, so that in particular the exhalation of the wearer when carrying the respiratory mask via the at least one breathing valve arrangement takes place.
  • valve membrane is then preferably automatically displaced by exhaling the wearer wearing the respirator mask. In particular, a targeted displacement of the valve membrane takes place.
  • the valve membrane preferably returns automatically to its previous position after exhaling the carrier automatically or independently.
  • the valve membrane closes off the at least one respiratory opening at least partially, more preferably completely. Conveniently, it then abuts against the valve seat body such that the at least one breathing opening is completely closed by the valve membrane. It preferably extends completely in the valve membrane main plane or is then curved, for example, at least partially.
  • the valve membrane at least partially, preferably completely, releases the at least one breathing opening so that the wearer's breath can flow through the at least one breathing opening. It is then conveniently at least partially lifted from the valve seat body.
  • the mask body is formed of a nonwoven material. It is advantageous if the inhalation of the wearer wearing the respirator mask takes place through the mask body itself.
  • the mask body is conveniently formed of an air-permeable filter material.
  • the breathing valve arrangement is designed as an inhalation valve arrangement. The inhalation valve arrangement then enables a particularly simple inhalation of the wearer.
  • the mask body is then preferably formed of an air-impermeable material.
  • the mask body is conveniently designed shell-like. He has, for example, a sealing lip for engagement with the wearer or on the face.
  • valve seat body is closed on the circumferential side. Conveniently, this limits the at least one breathing opening.
  • the valve seat body is adapted in shape to the valve diaphragm.
  • the valve seat body has an inner or central support structure, which at least partially supports the valve membrane in its closed position at its edge and thus prevents, for example, sagging of the valve membrane in its closed position.
  • the entire respiratory mask is symmetrical with respect to a plane of symmetry.
  • the respirator is designed as a respiratory half mask.
  • Other configurations, such as a respirator full face mask, are alternatively possible.
  • the respirator mask is preferably particle-filtering or can be used for gases and vapors.
  • the respirator includes at least one retaining means, such as a headband, for holding the respirator on a head of the wearer.
  • retaining means such as a headband
  • the reinforcing structure protrudes in at least one direction perpendicular to the valve diaphragm main plane with respect to the valve diaphragm sections.
  • the reinforcing structure is conveniently integrally connected to the valve membrane sections.
  • the valve membrane sections preferably have a uniform thickness, for example between 0.1 mm and 0.3 mm.
  • valve membrane sections in a valve diaphragm main plane at least partially wider than the at least one respective reinforcing oblique body.
  • the valve membrane has spaced according to the dependent claim 4 and / or adjacent to the reinforcing structure at least one predetermined bending or predetermined bending line to which the valve membrane bends in its displacement between the release position and closed position
  • the valve diaphragm has conveniently a reduced bending resistance.
  • the at least one predetermined bending point also advantageously cuts the reinforcing structure. It preferably runs straight, curved or substantially V-shaped.
  • the reinforcing connecting body is formed by a peripherally extending, central connection field. It is expedient if at least some, more preferably several, more preferably all, join the reinforcing oblique body to this connecting field, in particular at an angle. It can connect reinforcing inclined body to the connecting web and other reinforcing inclined body to the connection field.
  • valve membrane is locally fixed, in particular clamped, in the region of the connection field. It is advantageous if at least one clamping or fixing means of the valve membrane is arranged in the central connection field. This is conveniently designed as an opening or bridge. Preferably, this is arranged adjacent to the base or base side of the valve membrane. Conveniently, at least some, more preferably most, more preferably all, of the reinforcing slant body run obliquely outwardly from a base of the valve membrane or from the connection pad, respectively obliquely forward. It is advantageous if at least some, more preferably most, more preferably all, of the reinforcing slanted body extend at an angle to a base side of the valve membrane.
  • reinforcing oblique bodies are beam-shaped or radial from the base or the central connection field of the valve diaphragm run away.
  • At least two, more preferably most, more preferably all, of the V amplification arrangements are connected to each other via at least one secondary reinforcement web extending at a distance from the valve diaphragm center plane or plane of symmetry. It is advantageous if the at least one secondary reinforcing web at least partially curved and / or obliquely to the valve diaphragm center plane or -Symmetrieebene.
  • central connecting web and the at least one secondary reinforcing web run at least partially antiparallel to one another.
  • FIG. 1 is a plan view of a respiratory mask according to the invention
  • Fig. 2 is a longitudinal section through a breathing valve assembly of in
  • FIG. 1 shown respirator mask, wherein the valve diaphragm is in a closed position
  • Fig. 3 is a view corresponding to FIG. 2, wherein the
  • FIG. 4 is an isolated plan view of the valve membrane already shown in FIGS. 1 to 3, FIG.
  • Fig. 5 is an enlarged longitudinal section through that shown in Fig. 4
  • Fig. 6 is an enlarged longitudinal section through that shown in Fig. 4
  • FIGS. 7 to 9 are plan views of further valve diaphragms which can alternatively be used, for example, in the respiratory valve arrangement shown in FIGS. 1 to 3.
  • a respirator mask shown in its entirety in FIG. 1 and designed as a respiratory protection half mask, is symmetrical with respect to a symmetry plane 2.
  • the respirator comprises a mask body 1.
  • the mask body 1 When the mask body 1 is intended to be carried by a wearer (not shown), it covers a nose area and mouth area of the wearer. Headbands (not shown) are guided around an occiput of the wearer.
  • the respirator mask has a substantially triangular exhalation valve arrangement 3 in plan view.
  • Respiratory valve assembly 3 is associated with a arranged in the mask body 1 exhalation (not shown). It is attached to the mask body 1.
  • a tip 4 of the exhalation valve assembly 3 faces a chin region 5 of the mask main body 1, while a base 6 of the exhalation valve assembly 3 faces a nose region 7 of the mask main body 1.
  • Another orientation is possible as an alternative.
  • the exhalation valve arrangement 3 has a valve seat body 8, which delimits or has a valve seat opening 9 and is fastened to the mask main body 1.
  • the valve seat opening 9 coincides with the respiratory opening in the mask main body 1.
  • the valve seat body 8 also has a central support structure 27 with a plurality of support webs.
  • the exhalation valve assembly 3 has a housing body 10, which is arranged in the mounted state of the exhalation valve assembly 3 outside with respect to the mask body 1 and is attached to the valve seat body 8 and / or the mask body 1.
  • the housing body 10 has a roof 28, which is arranged at a distance from the valve seat body 8 and covers the valve seat opening 9.
  • the exhalation valve assembly 3 has a flexible or flexible valve membrane 1 1, which is injection-molded from a plastic material and is itself fluid-tight.
  • the valve diaphragm 1 1 is partially clamped edge-side between the valve seat body 8 and the housing body 10.
  • a remaining area of the valve membrane 11 is movable between a closed position (FIG. 2) and a release position (FIG. 3).
  • FIG. 2 shows, the valve diaphragm 11 is in its closed position against the valve seat body 8 in a sealed manner and closes the valve seat opening 9 completely fluid-tight.
  • inhalation of ambient air via the exhalation valve arrangement 3 is then completely prevented.
  • valve membrane 1 1 By exhaling the wearer wearing the respirator, the valve membrane 1 1 is partially spaced from the valve seat body 8 lifted to the clamping point, so that the valve seat opening 9 is released and breath of the wearer through the valve seat opening 9 and through formed in the housing body 10 breath outlet openings (not shown) can escape.
  • the valve membrane 1 1 is then partially on the inside on the roof 28 on the surface. The roof 28 prevents further displacement of the valve membrane 1 1.
  • the valve membrane 1 1 When the wearer of the respirator no longer exhales, the valve membrane 1 1 automatically returns to its closed position.
  • the valve membrane 1 1 is adapted in its outer shape to the valve seat body 8 and its valve seat. It is triangular with the corners rounded and the sides curved.
  • the valve diaphragm 1 1 is symmetrical even with respect to a valve diaphragm center plane or symmetry plane 12.
  • the valve diaphragm center plane 12 divides the valve diaphragm 1 1 into two identical halves in a plan view and extends substantially perpendicular to a valve membrane main plane in which the valve diaphragm 11 is in a flat position.
  • the valve membrane 1 1 has a curved base 14 and two adjoining the base 14, curved sides 15 which converge from the base 14 from.
  • the valve membrane 11 has a reinforcing structure 16 with a central connecting field 17 arranged adjacent to the base 14 and a connecting web 19 running straight from the connecting field 17 to a base 14 opposite the base 14, as well as reinforcing oblique bodies 20 coming from the connecting field 17 and the connecting web 19 extend obliquely to the valve diaphragm center plane 12 to the side outside.
  • the reinforcing oblique bodies 20 extend obliquely from the valve diaphragm center plane 12 at an angle to the front or from the base 14 obliquely away.
  • two clamping openings 23 are provided in the connection field 17 in the connection field 17 in the connection field 17 two clamping openings 23 are provided.
  • the reinforcing structure 16 comprises a peripheral frame body 21, which is circumferentially closed.
  • the connecting web 19 has a substantially larger width in the valve diaphragm main plane than the respective reinforcing inclined bodies 20, which have a uniform width.
  • V-reinforcement arrangement 25 in total.
  • the extending in a common side with respect to the connecting web 19 reinforcing inclined body 20 extend parallel to each other.
  • a V-gain device 25 is connected to the connection pad 17.
  • the individual V amplification arrangements 25 are arranged offset from one another. Starting from the connection field 17, the length of the reinforcing oblique body 20 decreases due to the triangular configuration of the valve membrane 11.
  • the reinforcing structure 16 desirably has a uniform thickness perpendicular to the valve diaphragm main plane.
  • valve membrane 1 Between the reinforcing structure 16, the valve membrane 1 1 thin valve membrane sections or fields 22.
  • the valve membrane sections 22 are formed substantially thinner than the reinforcing structure 16 perpendicular to the valve membrane main plane. In the valve membrane main plane, the valve membrane sections 22 have a significantly greater width than the reinforcing oblique bodies 20.
  • the valve membrane sections 22 adjoin the reinforcing structure 16, for example at half the height. Alternatively, they are connected to the reinforcing structure 16 in a bottom portion or a head portion of the reinforcing structure 16.
  • the valve membrane 1 1 is designed as a sheet with the reinforcing structure 16 as a whole.
  • the connecting web 19 forms a central rib, while the reinforcing inclined bodies 20 form side ribs.
  • the valve membrane 1 1 is based on a total of bionic principles.
  • the connecting web 19 and the reinforcing inclined body 20 give the valve diaphragm 1 1 a stability.
  • the comparatively thin valve membrane sections 22 act as desired bending points or predetermined kinks and reduce the kink resistance.
  • the minimum thickness of the reinforcement structure 16 is determined by a requirement for the minimum stiffness of the valve membrane 11. This is chosen so that even with downwardly inclined valve membrane 1 1, the valve diaphragm 1 1 still fluid-tight against the valve seat body 8 and the valve seat opening 9 closes fluid-tight and does not sag.
  • valve membrane 1 1 is in its release position of the valve seat body 8 spaced to the clamping point lifted so that the valve seat opening 9 is released and breath of the wearer can flow through the valve seat opening 9.
  • the valve diaphragm 1 1 then conveniently has a bending line extending between the sides 15 of the valve membrane 1 1.
  • the bending line preferably extends at a distance from the clamping point or base 14 of the valve membrane 1 1 and spaced from the tip 18 of the valve membrane 1 1, wherein preferably the bending line is closer to the clamping point than to the tip 18 or arranged.
  • the bendline intersects the valve diaphragm midplane or symmetry plane 12 vertically.
  • the bend line between the sides 15 is preferably substantially V-shaped or curved, with a bendline base preferably lying on the valve membrane midplane or symmetry plane 12 and the bendline extending therefrom obliquely forward and / or away from the base 14.
  • valve diaphragm a second embodiment of the valve diaphragm will be described with reference to FIG. Identical parts or components are given the same reference numerals as in the previous embodiment, to which reference is hereby made. Structurally different, but functionally similar parts or components are given the same reference numerals with a subordinate "a".
  • the reinforcement structure 16a is formed differently in the valve membrane 1 shown in FIG.
  • the reinforcing structure 16a has two additional sub-reinforcing webs 26 extending from the base 14 toward the tip 18. *** " However, the sub-reinforcing webs 26 terminate at a distance from the tip 18.
  • the sub-reinforcing webs 26 divide the valve membrane sections 22a into sub-sections, which may have identical or different sizes. Between five and fifteen V gain assemblies 25a are present. Two are connected to the connection field 17a.
  • valve diaphragm a third embodiment of the valve diaphragm will be described with reference to FIG. Identical parts or components are given the same reference numerals as in the first embodiment, to which reference is hereby made. Functionally identical, but structurally different parts or components are given the same reference numerals with a subordinate "b".
  • the reinforcing structure 16b is designed differently.
  • the connecting web 19 is virtually absent.
  • Most of the individual V reinforcing arrangements 25b are connected to one another only via the frame body 21 or the valve membrane sections 22b. These are at a distance from each other.
  • the valve membrane sections 22b between individual V reinforcement assemblies 25b are contiguous and V-shaped, respectively. Overall, there are between five and fifteen V-gain assemblies 25b. Two are connected to the connection field 17b.
  • a fourth embodiment of the valve diaphragm will be described with reference to FIG. Identical parts or components are given the same reference numerals as in the first embodiment, to the description of which reference is made. Functionally identical, but structurally different parts or components are given the same reference numerals with a subordinate "c".
  • the reinforcing structure 16c is formed differently. There is no connecting web 19 available.
  • the connection field 17c is essentially semicircular.
  • the reinforcing slanted bodies 20c extend radially outward from the connecting field 17c. They run obliquely to the base 14. Adjacent reinforcing oblique bodies 20c also run away from each other.
  • the reinforcing helical bodies 20c are arranged in pairs with respect to the valve membrane center plane 12 and form corresponding V reinforcing arrangements 25c. Between five and fifteen V amplifying assemblies 25c are present.
  • the bending behavior of the valve membranes I Ia, 1 Ib, 1 1c shown in FIG. 7 to 9 is preferably substantially identical to the bending behavior of the valve membrane 1 1 according to the first embodiment.

Landscapes

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

Abstract

L'invention concerne un masque respiratoire permettant de filtrer l'air inhalé d'un support du masque respiratoire. Le masque respiratoire comprend un corps de base de (1) permettant de couvrir un nez et une bouche et au moins un dispositif à valve respiratoire (3) disposé sur le corps de base (1) du masque et pourvu d'un corps siège de valve (8) et d'une membrane de valve (11) qui est mobile entre une position de libération et une position de fermeture et qui, en position de libération, dégage un orifice respiratoire et, en position de fermeture, obture l'orifice respiratoire et qui comporte une structure de renforcement (16), laquelle présente au moins un corps oblique (20) de renforcement s'étendant de manière oblique par rapport à un plan médian de la membrane de valve.
EP17717185.7A 2016-04-21 2017-04-13 Masque respiratoire et membrane destinée à ce masque Withdrawn EP3445457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016206775.3A DE102016206775A1 (de) 2016-04-21 2016-04-21 Atemschutzmaske
PCT/EP2017/058979 WO2017182388A1 (fr) 2016-04-21 2017-04-13 Masque respiratoire et membrane destinée à ce masque

Publications (1)

Publication Number Publication Date
EP3445457A1 true EP3445457A1 (fr) 2019-02-27

Family

ID=58544973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17717185.7A Withdrawn EP3445457A1 (fr) 2016-04-21 2017-04-13 Masque respiratoire et membrane destinée à ce masque

Country Status (5)

Country Link
US (1) US20200324151A1 (fr)
EP (1) EP3445457A1 (fr)
CN (1) CN109069886A (fr)
DE (1) DE102016206775A1 (fr)
WO (1) WO2017182388A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL71259Y1 (pl) * 2017-12-27 2020-02-28 Filter Service Spolka Z Ograniczona Odpowiedzialnoscia Półmaska do filtracji powietrza
DE202020102872U1 (de) 2020-05-19 2020-06-10 Deep GmbH Atemschutzmaske
DE102021125599B4 (de) 2020-10-19 2022-12-15 Herbert Hatzlhoffer Atemschutzmaske
WO2023051875A1 (fr) 2021-10-03 2023-04-06 Herbert Hatzlhoffer Masque de protection respiratoire

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1213249B (de) * 1962-05-29 1966-03-24 Draegerwerk Ag Ventil fuer Atemschutzgeraete, Atemschutz-masken u. dgl.
GB9515986D0 (en) * 1995-08-04 1995-10-04 Racal Health & Safety Ltd Uni-directional fluid valve
US6758212B2 (en) * 2002-06-24 2004-07-06 Brookdale International Systems, Inc. Personal emergency breathing system
ITSV20030003A1 (it) * 2003-02-04 2004-08-05 Scubapro Europ Valvola a membrana e secondo stadio di riduzione di pressione
US6834649B1 (en) * 2004-04-13 2004-12-28 Tzong-Fuh Kuo One-way valve on diving mask
CN1840213A (zh) * 2005-08-26 2006-10-04 王海金 多功能带单向阀的口罩
CN201631861U (zh) * 2009-12-31 2010-11-17 崇仁科技事业股份有限公司 呼吸面罩
CN103228313A (zh) * 2010-12-29 2013-07-31 3M创新有限公司 具有带烧蚀阀瓣的阀的呼吸器
EP3068499B1 (fr) * 2013-11-15 2024-03-13 3M Innovative Properties Company Respirateur ayant une soupape d'expiration non-circulaire montée au centre
CN203677772U (zh) * 2013-12-19 2014-07-02 马子栋 空气过滤式口罩
KR20150100286A (ko) * 2014-02-25 2015-09-02 김병욱 운동용 호흡구

Also Published As

Publication number Publication date
US20200324151A1 (en) 2020-10-15
WO2017182388A1 (fr) 2017-10-26
CN109069886A (zh) 2018-12-21
DE102016206775A1 (de) 2017-10-26

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