US3474783A - Respiratory mask with exhalation valve having alternate biasing means - Google Patents

Respiratory mask with exhalation valve having alternate biasing means Download PDF

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Publication number
US3474783A
US3474783A US3474783DA US3474783A US 3474783 A US3474783 A US 3474783A US 3474783D A US3474783D A US 3474783DA US 3474783 A US3474783 A US 3474783A
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US
United States
Prior art keywords
mask
valve
respiratory
exhalation
biasing means
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 - Lifetime
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English (en)
Inventor
Paul Ulmann
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
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Publication of US3474783A publication Critical patent/US3474783A/en
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Expired - Lifetime 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F16K15/1481—Check valves with flexible valve members the closure elements being fixed in their centre with biasing means in addition to material resiliency, e.g. spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K2200/00—Details of valves
    • F16K2200/30—Spring arrangements
    • F16K2200/305—Constructional features of springs
    • F16K2200/3053—Helicoidal springs of variable pitch, diameter or spring rate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7905—Plural biasing means

Definitions

  • the present invention is directed to an exhalation device for respiratory masks. It is known that a protective mask or respirator should allow the exhaled air to pass through an outlet valve as soon as the pressure within the mask exceeds the pressure of the surrounding atmosphere by a predetermined difference.
  • the face-piece is supplied with a respiratory mixture at a pressure which is distinctly higher than that of the surrounding atmosphere (the over-pressure being usually between 20 and 50 mm. H O) in order to prevent the penetration of toxic gases or dust particles from the atmosphere through the face-piece at any locations in which leak-tightness is faulty.
  • the face-piece is supplied from the surrounding atmosphere through a filter cartridge and an inlet valve which opens under the action of the reduced pressure or partial vacuum which is developed within the mask as a result of inhalation by the wearer.
  • the exhalation device of isolating masks In order to prevent any waste of the respiratory mixture, the exhalation device of isolating masks must be calibrated so as to remain closed as long as the pressure within the mask does not exceed the pressure of the atmosphere by a few millimeters of water in addition to the supply overpressure.
  • An exhalation device of this type would not be suitable for use in filtering masks inasmuch as it would induce considerable respiratory discom fort in these masks, in which the exhalation device must open as soon as the pressure inside the mask becomes higher than the ambient pressure.
  • the devices which are designed for filtering masks are not suitable for isolating masks inasmuch as they would permit leakage of the respiratory mixture, and the devices for isolating masks are not comfortable for use under filtering conditions.
  • the present invention is intended to provide an exhalation device for a respiratory mask which can be supplied either from the surrounding atmosphere through a filter cartridge or with a respirable gas which is at overpressure with respect to said atmosphere.
  • the invention is especially characterized in that the device comprises a canister fitted with a valve-seat for connecting the interior of the mask to the atmosphere, a valve which is elastically applied against the valve-seat with slight pressure, elastic means adapted to cooperate with the valve so as to exert thereon an additional force which tends to apply said valve against its seat and which is of suflicient intensity to balance said overpressure with respect to the surrounding atmosphere, and a mechanism for releasing said elastic means.
  • the invention also extends to masks which are fitted on the one hand with a device for supplying a respiratory mixture and a filter cartridge for supplying the mask from the surrounding atmosphere which can be empolyed alternatively through a suction device and, on the other hand with an exhalation deivce as hereinabove defined.
  • the invention also consists in other arrangements which are preferably employed at the same time in conjunction with the preceding but which can be employed independ ently thereof.
  • FIG. 1 is a view in elevation of an exhalation device as shown in the isolated condition
  • FIG. 2 is a view of the device taken in cross-section on a plane which passes through its axis, the parts being shown in the position occupied for the purpose of operation with an isolating mask;
  • FIG. 3 which is similar to FIG. 2, shows the parts in the position occupied for the purpose of operation with a filtering mask
  • FIG. 4 is a View in cross-section of the device of FIG. 1 with the top removed, a number of parts being only partly shown for enhanced visibility of other parts located beneath;
  • FIG. 5 is a detail view of the check valve and is intended to show the deformation to which said valve is subjected when in position and at rest within the device.
  • FIG. 6 is a view of a prior art mask showing the location of the exhalation device or valve.
  • the device which is shown in FIGS. 1 to 4 comprises a canister A in which is mounted a normally-closed valve B.
  • the casing A comprises a cylindrical body 6 which is secured in leak-tight manner to a skirt 10 of the facepiece C by means of a fastening collar 8 (as shown in FIGS. 2 and 3) and a cover 12.
  • Said cover has a cylindrical skirt and a convex base 14 pierced by a series of uniformly spaced apertures 16.
  • the skirt is provided with a circular internal boss 18 for engaging the cover 12 within a channel 20 of the body 6.
  • the top face of the canister body 6 has a circular rib of rounded transverse section which constitutes a valveseat 22, said seat being adapted to surround a communication passageway between the interior of the face-piece C and the cover 12.
  • the exhalation or outlet valve is formed by the combination of said seat 22 and a gate 24 which is composed of a stem 26 and a flat diaphragm 32.
  • the stem 26 has a narrowed portion 28 which is stationarily fixed in a recess formed in a hub of the body which is joined to the peripheral portion by means of three arms 30.
  • the arms 30 are adapted to retai a screen 34 which is placed between the diaphragm 32 and the interior of the face-piece C (as shown in FIGS. 2, 3 and 4).
  • valve-seat 22 and recess in which the stem 26 is imprisoned have a relative axial location such that, when the gate 24 is in position, the diaphragm 32 is slightly deformed, as is apparent from FIG. which shows the amplitude a of the deformation.
  • the natural elasticity of the material constituting the gate thus tends to apply said gate against the seat 22 with a force which can be of a very low order.
  • elastic means which tend to increase the force with which the diaphragm 32 of the gate 24 is applied against its seat 22 (as shown in FIGS. 2 and 3).
  • These means comprise a cup 36 provided in the central portion with three apertures for the passage of air to the surrounding atmosphere.
  • the axial displacement of said cup 36 is guided by three rectilineal bosses 38 formed on the skirt of the cover 12 and disposed at an angle of 120 relatively to each other.
  • a spiral spring 40 which is compressed between the bottom 14 of the cover 12 and the cup 36 serves to apply this latter against the periphery of the diaphragm 32.
  • the cup 32 is rigidly fixed by any suitable means such as the screws 44 which are shown in FIGS. 1 to 4 to a control ring 46 which is adapted to slide over the outer cylindrical wall of the skirt of the cover 12.
  • the L-shaped guide slots which are formed in the skirt of the cover 12 permit the sliding motion of the screws 44; when the ring 46 is oriented in such a manner that the screws 44 are placed in that portion of the slots 48 which is parallel to the axis (as shown in FIGS. 1 and 2), the spring 40 thrusts back the cup 36 towards the gate 24 and adds its tension to the elasticity of the gate so as to shut off the outlet valve. On the other hand, when the ring 46 is raised and oriented so as to lock the screws 44 in that portion of the guide slots 48 which is perpendicular to the axis, the spring 40 cannot produce action on the gate 24 (as shown in FIG. 3).
  • An exhalation device for respiratory masks comprising a canister, a valve-seat in said canister forming a passageway connecting the interior of the .mask to the atmosphere, a valve elastically applied against said seat with slight pressure, resilient means cooperating with said valve to exert thereon an additional force applying said valve against its seat, mechanism for releasing said resilient means and freeing said valve therefrom, said resilient means being a spring interposed between said canister and a cup bearing on said valve, said bearing cup being rigidly fixed to a control ring slidably mounted on the outer wall of the canister said releasing mechanism locking said ring on said canister in a position in which said cup does not bear on said valve.
  • cup and said ring being coupled by screws passing through L- shaped slots in said canister, said slots having a circular portion cooperating with said screws providing said release mechanism.
  • a respiratory mask comprising an exhalation device in accordance with claim 2, wherein said mask can be supplied either from the surrounding atmosphere through a filter cartridge or with a respirable gas which is at overpressure with respect to the atmosphere, and wherein said additional force is of sufficient intensity to balance said overpressure with respect to the surrounding atmosphere.
  • An exhalation device for respiratory masks comprising a canister, a gas passageway in said canister con necting the interior of the mask to the atmosphere, a valve seat in said canister, a closure member cooporating with said valve seat to open and close said gas passageway in response to changes of gas pressure within the mask, means resiliently biasing said member to a position'in which said passageway is closed, supplementary biasing means movable between a first position in which said means resiliently act on said closure member to additionally bias said member to its closed position and a second position in which said means disengage said closure member, and manually actuable control means for moving said supplementary biasing means between said first and second positions and locking said supplementary biasing means in said second position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
US3474783D 1966-02-18 1967-01-31 Respiratory mask with exhalation valve having alternate biasing means Expired - Lifetime US3474783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR50211A FR1475015A (fr) 1966-02-18 1966-02-18 Dispositif d'expiration pour masques respiratoires

Publications (1)

Publication Number Publication Date
US3474783A true US3474783A (en) 1969-10-28

Family

ID=8601746

Family Applications (1)

Application Number Title Priority Date Filing Date
US3474783D Expired - Lifetime US3474783A (en) 1966-02-18 1967-01-31 Respiratory mask with exhalation valve having alternate biasing means

Country Status (10)

Country Link
US (1) US3474783A (fr)
BE (1) BE693152A (fr)
CH (1) CH469491A (fr)
DE (1) DE1709059C2 (fr)
ES (1) ES336562A1 (fr)
FR (1) FR1475015A (fr)
GB (1) GB1124703A (fr)
LU (1) LU53007A1 (fr)
NL (1) NL6701157A (fr)
SE (1) SE311824B (fr)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575206A (en) * 1968-07-11 1971-04-20 Commissariat Energie Atomique Exhalation device for breathing mask
JPS52131605U (fr) * 1977-03-31 1977-10-06
US4579147A (en) * 1984-11-30 1986-04-01 Paul H. Gunderson Outlet valve for pressurized diving suit
US4932399A (en) * 1987-10-06 1990-06-12 Industrie Pirelli Device for replacing the filter of a gas mask in a polluted atmosphere without any contamination risk
US4974586A (en) * 1986-11-06 1990-12-04 Moldex/Metric Products, Inc. Breathing mask
US5725017A (en) * 1997-01-27 1998-03-10 Medtronic, Inc. In-line pressure check valve for drug-delivery systems
US5836301A (en) * 1992-10-14 1998-11-17 Stackhouse, Inc. Surgical smoke evacuator filter mounting structure
US20020023649A1 (en) * 1999-02-09 2002-02-28 Resmed Limited Gas delivery connection assembly
US20040025880A1 (en) * 2000-04-18 2004-02-12 Andrew Capon Self-sealing filter connection and gas mask filter assembly incorporating the same
US20040134497A1 (en) * 1998-12-09 2004-07-15 Resmed Limited Mask cushion and frame assembly
US7318439B2 (en) 2001-09-07 2008-01-15 Resmed Limited Mask assembly
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
US8875710B2 (en) 2001-10-22 2014-11-04 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
WO2015073824A1 (fr) * 2013-11-14 2015-05-21 D. Wheatley Enterprises, Inc. Ensemble de cartouche réparable destiné à l'unité d'expiration d'un respirateur
US20150136141A1 (en) * 2013-11-15 2015-05-21 3M Innovative Properties Company Respirator Having Noncircular Centroid-Mounted Exhalation Valve
US9072853B2 (en) 2001-09-07 2015-07-07 Resmed Limited Forehead pad for respiratory mask
USD811580S1 (en) * 2014-05-08 2018-02-27 Innosparks Pte Ltd Unidirectional valve for face mask
USD827811S1 (en) 2016-09-16 2018-09-04 3M Innovative Properties Company Valve cover
USD827812S1 (en) 2016-09-16 2018-09-04 3M Innovative Properties Company Valve cover with openings
USD828546S1 (en) 2016-09-16 2018-09-11 3M Innovative Properties Company Valve cover with openings
CN109027340A (zh) * 2018-09-28 2018-12-18 盐城欧润石化设备制造有限公司 一种单向阀门
USD842983S1 (en) 2016-09-16 2019-03-12 3M Innovative Properties Company Valve cover
USD843562S1 (en) 2016-09-16 2019-03-19 3M Innovative Properties Company Valve cover with diamond pattern
USD849245S1 (en) 2016-09-16 2019-05-21 3M Innovative Properties Company Valve cover
US10322312B1 (en) * 2018-06-01 2019-06-18 TrainingMask L.L.C. Resistance and filtration breathing device
USD882758S1 (en) 2016-09-16 2020-04-28 3M Innovative Properties Company Valve cover
CN111167030A (zh) * 2019-12-25 2020-05-19 江苏海拓科技有限公司 一种呼吸器
US10786695B2 (en) * 2013-07-17 2020-09-29 The Smartmask Llc Protective respiratory mask with electronic system
USD900306S1 (en) 2016-09-16 2020-10-27 3M Innovative Properties Company Valve cover
EP4159287A1 (fr) * 2021-09-30 2023-04-05 Moldex/Metric AG & Co. KG Dispositif de soupape pour un masque respiratoire, masque respiratoire
US12070634B2 (en) 2016-09-16 2024-08-27 3M Innovative Properties Company Exhalation valve and respirator including same

Families Citing this family (4)

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US5109840A (en) * 1991-02-14 1992-05-05 Specialty Packaging Licensing Company Resuscitator having directional control valve with internal "PEEP" adjustment valve
IT232743Y1 (it) * 1994-02-09 2000-01-19 Spasciani Riccardo Spa Maschera perfezionata per dispositivi di respirazione ad aria in pressione o meno
GB2470199B (en) * 2009-05-12 2013-08-14 Scott Health & Safety Ltd Mask for breathing apparatus
DE102016121382A1 (de) * 2016-11-08 2018-05-09 Hamilton Medical Ag Expirationsventil

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GB705216A (en) * 1951-10-19 1954-03-10 Dunlop Rubber Co Improvements in fluid pressure relief valves
US3199524A (en) * 1962-02-26 1965-08-10 Robertshaw Controls Co Magnetically controlled exhalation valve

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DE1864603U (de) * 1962-10-20 1962-12-27 Auergesellschaft Gmbh Mit abnehmbarem deckel versehenes ausatemventil fuer atemschutzmasken, atemmundstuecke u. dgl.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB705216A (en) * 1951-10-19 1954-03-10 Dunlop Rubber Co Improvements in fluid pressure relief valves
US3199524A (en) * 1962-02-26 1965-08-10 Robertshaw Controls Co Magnetically controlled exhalation valve

Cited By (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575206A (en) * 1968-07-11 1971-04-20 Commissariat Energie Atomique Exhalation device for breathing mask
JPS52131605U (fr) * 1977-03-31 1977-10-06
US4579147A (en) * 1984-11-30 1986-04-01 Paul H. Gunderson Outlet valve for pressurized diving suit
US4974586A (en) * 1986-11-06 1990-12-04 Moldex/Metric Products, Inc. Breathing mask
US4932399A (en) * 1987-10-06 1990-06-12 Industrie Pirelli Device for replacing the filter of a gas mask in a polluted atmosphere without any contamination risk
US5836301A (en) * 1992-10-14 1998-11-17 Stackhouse, Inc. Surgical smoke evacuator filter mounting structure
US5725017A (en) * 1997-01-27 1998-03-10 Medtronic, Inc. In-line pressure check valve for drug-delivery systems
US20060130843A1 (en) * 1998-12-09 2006-06-22 Resmed Limited Cushion clip assembly and mask assembly having same
US9808589B2 (en) 1998-12-09 2017-11-07 Resmed Limited Method for assembling a patient interface
US8667965B2 (en) 1998-12-09 2014-03-11 Redmed Limited Mask cushion and frame assembly
US20090114227A1 (en) * 1998-12-09 2009-05-07 Resmed Limited Mask cushion and frame assembly
US7487777B2 (en) 1998-12-09 2009-02-10 Resmed Limited Cushion clip assembly and mask assembly having same
US20040134497A1 (en) * 1998-12-09 2004-07-15 Resmed Limited Mask cushion and frame assembly
US7021311B2 (en) 1998-12-09 2006-04-04 Resmed Limited Mask cushion and frame assembly
US7174893B2 (en) 1999-02-09 2007-02-13 Resmed Limited Mask with anti-asphyxia valve
US20020153012A1 (en) * 1999-02-09 2002-10-24 Gunaratnam Michael K. Respiratory mask assembly
US20060076017A1 (en) * 1999-02-09 2006-04-13 Resmed Limited Mask with anti-asphyxia valve
US7089939B2 (en) * 1999-02-09 2006-08-15 Resmed Limited Gas delivery connection assembly
US20020023650A1 (en) * 1999-02-09 2002-02-28 Resmed Limited Gas delivery connection assembly
US7185652B2 (en) 1999-02-09 2007-03-06 Resmed Limited Gas delivery connection assembly
US7207334B2 (en) 1999-02-09 2007-04-24 Resmed Limited Respiratory mask assembly
US20060107960A1 (en) * 1999-02-09 2006-05-25 Resmed Limited Respiratory mask assembly
US20020023649A1 (en) * 1999-02-09 2002-02-28 Resmed Limited Gas delivery connection assembly
US9227033B2 (en) 1999-02-09 2016-01-05 Resmed Limited Respiratory mask assembly
US20090188505A1 (en) * 1999-02-09 2009-07-30 Resmed Limited Respiratory mask assembly
US7861714B2 (en) 1999-02-09 2011-01-04 Resmed Limited Respiratory mask assembly
US8113197B2 (en) 1999-02-09 2012-02-14 Resmed Limited Respiratory mask assembly
US20040025880A1 (en) * 2000-04-18 2004-02-12 Andrew Capon Self-sealing filter connection and gas mask filter assembly incorporating the same
US6860267B2 (en) * 2000-04-18 2005-03-01 Avon Protection Systems, Inc. Self-sealing filter connection and gas mask filter assembly incorporating the same
US8746250B2 (en) 2000-10-19 2014-06-10 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US10596342B2 (en) 2000-10-19 2020-03-24 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
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
US9662467B2 (en) 2000-10-19 2017-05-30 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US7318439B2 (en) 2001-09-07 2008-01-15 Resmed Limited Mask assembly
US8839789B2 (en) 2001-09-07 2014-09-23 Resmed Limited Mask assembly
US10195385B2 (en) 2001-09-07 2019-02-05 Resmed Limited Forehead pad for respiratory mask
US10500363B2 (en) 2001-09-07 2019-12-10 ResMed Pty Ltd Mask assembly
US8230855B2 (en) 2001-09-07 2012-07-31 Resmed Limited Mask assembly
US9072853B2 (en) 2001-09-07 2015-07-07 Resmed Limited Forehead pad for respiratory mask
US9144656B2 (en) 2001-10-22 2015-09-29 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US9889266B2 (en) 2001-10-22 2018-02-13 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US10245403B2 (en) 2001-10-22 2019-04-02 RedMed R&D Germany GmbH Breathing mask arrangement as well as an application device 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
US10058671B2 (en) 2001-10-22 2018-08-28 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
US9757534B2 (en) 2001-10-22 2017-09-12 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US8875710B2 (en) 2001-10-22 2014-11-04 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
US9259549B2 (en) 2002-01-17 2016-02-16 Resmed R&D Germany Gmbh Breathing mask arrangement and a forehead support device for same
US8402972B2 (en) 2002-01-17 2013-03-26 Resmed R&D Germany Gmbh Breathing mask arrangement and a forehead support device for same
US10668241B2 (en) 2004-06-16 2020-06-02 ResMed Pty Ltd Cushion for a respiratory mask assembly
US10039893B2 (en) 2004-06-16 2018-08-07 Resmed Limited Respiratory mask assembly
US11529489B2 (en) 2004-06-16 2022-12-20 ResMed Pty Ltd Cushion for a respiratory mask assembly
US8353294B2 (en) 2004-06-16 2013-01-15 Resmed Limited Respiratory mask assembly
US11071839B2 (en) 2004-06-16 2021-07-27 ResMed Pty Ltd Cushion for a respiratory mask assembly
US9375545B2 (en) 2004-06-16 2016-06-28 Resmed Limited Respiratory mask assembly
US10786695B2 (en) * 2013-07-17 2020-09-29 The Smartmask Llc Protective respiratory mask with electronic system
WO2015073824A1 (fr) * 2013-11-14 2015-05-21 D. Wheatley Enterprises, Inc. Ensemble de cartouche réparable destiné à l'unité d'expiration d'un respirateur
US11040226B2 (en) * 2013-11-14 2021-06-22 D. Wheatley Enterprises, Inc. Serviceable cartridge assembly for respirator exhalation unit
GB2533898A (en) * 2013-11-14 2016-07-06 D Wheatley Entpr Inc Serviceable cartridge assembly for respirator exhalation unit
US10279204B2 (en) 2013-11-14 2019-05-07 D. Wheatley Enterprises, Inc. Serviceable cartridge assembly for respirator exhalation unit
GB2533898B (en) * 2013-11-14 2020-12-02 D Wheatley Entpr Inc Serviceable cartridge assembly for respirator exhalation unit
US11305134B2 (en) 2013-11-15 2022-04-19 3M Innovative Properties Company Respirator having noncircular centroid-mounted exhalation valve
CN105722558A (zh) * 2013-11-15 2016-06-29 3M创新有限公司 具有非圆形的质心安装的呼气阀的呼吸器
AU2018201018B2 (en) * 2013-11-15 2019-02-07 3M Innovative Properties Company Respirator having noncircular centroid-mounted exhalation valve
CN105722558B (zh) * 2013-11-15 2019-06-07 3M创新有限公司 具有非圆形的质心安装的呼气阀的呼吸器
US20150136141A1 (en) * 2013-11-15 2015-05-21 3M Innovative Properties Company Respirator Having Noncircular Centroid-Mounted Exhalation Valve
US10143864B2 (en) * 2013-11-15 2018-12-04 3M Innovative Properties Company Respirator having noncircular centroid-mounted exhalation valve
USD811580S1 (en) * 2014-05-08 2018-02-27 Innosparks Pte Ltd Unidirectional valve for face mask
USD849245S1 (en) 2016-09-16 2019-05-21 3M Innovative Properties Company Valve cover
USD882758S1 (en) 2016-09-16 2020-04-28 3M Innovative Properties Company Valve cover
USD843562S1 (en) 2016-09-16 2019-03-19 3M Innovative Properties Company Valve cover with diamond pattern
USD900306S1 (en) 2016-09-16 2020-10-27 3M Innovative Properties Company Valve cover
USD842983S1 (en) 2016-09-16 2019-03-12 3M Innovative Properties Company Valve cover
USD828546S1 (en) 2016-09-16 2018-09-11 3M Innovative Properties Company Valve cover with openings
USD827812S1 (en) 2016-09-16 2018-09-04 3M Innovative Properties Company Valve cover with openings
USD827811S1 (en) 2016-09-16 2018-09-04 3M Innovative Properties Company Valve cover
US12070634B2 (en) 2016-09-16 2024-08-27 3M Innovative Properties Company Exhalation valve and respirator including same
US10322312B1 (en) * 2018-06-01 2019-06-18 TrainingMask L.L.C. Resistance and filtration breathing device
CN109027340A (zh) * 2018-09-28 2018-12-18 盐城欧润石化设备制造有限公司 一种单向阀门
CN111167030A (zh) * 2019-12-25 2020-05-19 江苏海拓科技有限公司 一种呼吸器
EP4159287A1 (fr) * 2021-09-30 2023-04-05 Moldex/Metric AG & Co. KG Dispositif de soupape pour un masque respiratoire, masque respiratoire

Also Published As

Publication number Publication date
GB1124703A (en) 1968-08-21
FR1475015A (fr) 1967-03-31
BE693152A (fr) 1967-07-03
DE1709059C2 (de) 1974-07-11
ES336562A1 (es) 1968-04-01
NL6701157A (fr) 1967-08-21
SE311824B (fr) 1969-06-23
LU53007A1 (fr) 1967-04-17
DE1709059B1 (de) 1971-09-23
CH469491A (fr) 1969-03-15

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