US3518989A - Valve assembly - Google Patents

Valve assembly Download PDF

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Publication number
US3518989A
US3518989A US3518989DA US3518989A US 3518989 A US3518989 A US 3518989A US 3518989D A US3518989D A US 3518989DA US 3518989 A US3518989 A US 3518989A
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United States
Prior art keywords
valve
passage
valve element
chamber
housing
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Expired - Lifetime
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English (en)
Inventor
Henry W Seeler
Gerda A Seeler
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GERDA A SEELER
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GERDA A SEELER
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0048—Mouth-to-mouth respiration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type

Definitions

  • a valve assembly for controlling fluid flow utilizes a single unattached valve plate disposed between confronting valve seats located in a housing which forms a fluid receiving chamber. Each of the valve seats encircles a passage communicating from the exterior to the interior of the housing. A third passage communicates between the exterior and interior of said housing and said valve assembly includes means to direct fluid entering said housing through said third passage against said valve plate to position said valve plate in a desired operating position.
  • the third passage is placed in communication with a patients lungs and the other passages are placed respectively in communication with a source of breathing gas and with the ambient atmosphere.
  • the patients exhalation gases which pass into the housing through the third passage are directed against said valve plate so as to close the passage to the source of breathing gas while also opening the passage to the ambient atmosphere.
  • This invention relates to a valve assembly for controlling fluid flow and, more particularly, to a valve assembly for use with a resuscitator or the like.
  • the mouth-to-mouth method of artificial respiration is far superior to any other type of manual resuscitation for insuring ample pulmonary ventilation. Since this method of artificial respiration creates sanitary problems because of the required intimate contact, resuscitators of the mouth-to-mask type have been utilized to eliminate the objection of the intimate contact while still resulting in the desired effects of the rnouth-to-mouth method.
  • the present invention employs a simplified valve design whereby a coin such as a penny or a dime, for example, may be easily substituted for the valve in the resuscitator of the present invention. Also, household items such as wax paper, plastic wrapping foil, aluminum foil, or other thin materials may be used.
  • valve construction of the present invention is so designed that no support means are attached to the valve to guide the valve in its movement whereby the minimum pressure differential required to operate the valve is greatly reduced. Instead, the chamber in which the valve is disposed is designed to provide the needed guide structure with minimal flow resistance.
  • An object of this invention is to provide a low cost and low breathing resistance portable resuscitator or breathing aid.
  • Another object of this invention is to provide a simplified valve construction for controlling fluid flow.
  • a further object of this invention is to provide a low cost valve for use with a resuscitator and the like.
  • a further object of this invention is to provide a simple and easily sterilized pulmonary treatment apparatus characterized by an avoidance of rebreathing and thus especially suited for medical applications.
  • Another object of this invention is to provide a simple resuscitator having a single moving part easily replaced in the field with readily available substitutes.
  • FIG. 1 is an enlarged longitudinal sectional view of a breathing assistance device showing one form of valve construction and taken substantially along line 1-1 of FIG. 2.
  • FIG. 2 is a sectional view taken substantially along line 2-2 of FIG. 1.
  • FIG. 3 is an enlarged fragmentary, longitudinal sectional view, similar to FIG. 1, but showing another form of valve construction.
  • FIG. 4 is a fragmentary, elevational view illustrating operation of the breathing assistance device of the present invention.
  • the device or resuscitator includes a substantially cylindrical and tubular housing 10, which is formed of tubular sections 12 and 14. An end 16 of the housing section 12 is enlarged and cooperates with an enlarged end 18 of the housing section 14 to form a connection therebetween.
  • the tubular housing section 12 has a passage 22 extending therethrough.
  • the longitudinal axis of the passage 22, which is circular in cross section, is coaxial with the longitudinal axis of the housing 10.
  • the passage 22 communicates with a passage 24 in a breathing tube such as mouthpiece 26.
  • the mouthpiece 26 has a depending annular portion 28, which tightly fits within a circular recess: formed by a reduced portion 30 of the housing section 12.
  • the other end of the passage 22 communicates with a chamber 32 through apertures 34, 36 and 38 in a web portion 40, which is formed integral with the housing section 12.
  • the aperture 34 is disposed centrally within the web portion 40 while the apertures 36 and 38 are arcuate and diametrically disposed with respect to the central aperture 34.
  • An inner wall 42 of the enlarged end 16 of the housing section 12 functions as the wall of the chamber 32.
  • the inner wall 42 is fluted to form channels or grooves 44 therein.
  • the channels or grooves 44 are separated from each other by projections 46 (see FIG. 2).
  • the chamber 32 which has its upper limit defined by an end face 48 of the housing section 12 and its lower limit defined by an end face 50 of the housing section 14, has its longitudinal axis coaxial with the longitudinal axis of the housing 10.
  • the tubular housing section 14 has a passage 52 formed therein.
  • the passage 52 is adapted to be connected to a breathing mask 54 (see FIG. 4), which fits over a portion of the face of the patient to be revived and provides a confined passage from the passage 52 to the mouth and nose of the patient, or a trachea tube that leads to the patient to be revived.
  • the size of the passage 52 is reduced at its end, which communicates with the chamber 32, by a hollow cylindrical member 56.
  • the cross section of the passage 52 is reduced from circular at its end communicating with the mask '54 or the trachea tube to arcuate or curved (see FIG. 2) at its end communicating with the chamber 32.
  • the member 56 is concentric with the housing section 14 so that a passage 58, which is within the member 56, has its longitudinal axis coaxial with the longitudinal axis of the housing 10.
  • the longitudinal axis of the passage 52 in both its cylindrical portion and its smaller arcuate or curved portion is coaxial with the longitudinal axis of the housing 10.
  • the curved or armate portion of the passage 52 partially surrounds the passage 58.
  • the wall of the housing section 14 has an integral portion 60 extending inwardly to support the cylindrical member 56.
  • the portion 60 of the wall of the housing section 14 has an opening or passage 62 extending between the exterior of the housing section 14 and the lower portion of the passage 58 in the member 56 to connect the passage 58 with the exterior of the housing 10.
  • the end face 48 provides a seat for a valve element.
  • breathing gases flow across the valve element and also the seating surface.
  • gases are ordinarily quite humid and, in consequence, condensation of moisture onto the valve and its seating surface can lead to a stickiness between the valve and its seating surface.
  • the end face 48 may be provided with an annular ridge 64 which substantially reduces the area of contact between the valve seat and the valve. When the ridge 64 is provided, this ridge becomes, in effect, the valve seat and will be hereinafter referred to as a valve seat.
  • the ridge 64 is not essential to the formation of a valve seat, which could be only the flat annular surface of the end face 48. It will also be quickly recog nized that plural annular ridges concentric to the ridge 64 may be used, as well as any other surface roughening device, to reduce surface adhesion between the valve and the valve seat.
  • the ridge or valve seat 64 as illustrated, surrounds the passage 22 at its end that communicates with the chamber 32.
  • the axis of the annular ridge or valve seat 64 is coaxial with the longitudinal axis of the housing 10.
  • the end of the hollow cylindrical member 56 defines an annular valve seat 66, which surrounds the passage 58 at its end that communicates with the chamber 32.
  • the valve seat 66 which is in confronting relation with the valve seat 64, has its axis coaxial with the longitudinal axis of the housing 10.
  • a single valve element 68 which is imperforate, is disposed within the chamber 32 and is freely movable 4 and floatable between the valve seats 64 and 66 in response to pressure differentials acting thereon due to fluid pressures within the passages 22, 52, and 58.
  • the valve element 68 may be either rigid or resilient. It may be formed of any suitable material such as rubber, silicon rubber, plastic, or metal, for example. If the diameter of the innermost portions of the projections 46 is properly selected, the single valve element 68 may be a coin such as a penny or a dime, for example, depending on the diameter of the innermost portions of the projections 46 of the inner wall 42. Accordingly, in an emergency, a coin may be readily substituted for the single valve element 68 if the single valve element 68 should be lost or damaged in some manner so as to not function properly.
  • the single valve element 68 is relatively thin but has sufficient thickness so as to not normally fracture or otherwise fail during operation. By making the single valve element 68 as thin as possible, its weight is reduced so that the single valve element 68 is readily responsive to changes in fluid pressures in the passages 22, 52, and 58.
  • the diameter of the valve seat 66 is less than the diameter of the valve seat 64 while the diameter of the single valve element 68 is greater than the diameter of the valve seat 64.
  • the single valve element 68 has a sufficient area of its surface or side 70, which engages or contacts the valve seat 66, exposed to the pressure within the passage 52 when the valve element 68 is engaging the valve seat 66 so that the valve element 68 is lifted off the valve seat 66 to engage the valve seat 64 when the fluid pressures within the passages 52 and 58 create a force greater than the force, which is created by the fluid pressure within the passage 22.
  • FIG. 4 operation of the breathing assistance device. of the present invention is shown.
  • An operator or attedant has the mouthpiece 26 within his mouth.
  • the mask 54 is disposed over the mouth and nose of a patient, who is to be revived.
  • the mask '54 is connected to the passage 52 in the housing 14 so that a confined passage is provided from the passage 52 to the mouth and nose of the, patient.
  • the pressure within the passage 22 immediately reduces to that of the ambient atmosphere which is below that of the inflated lungs of the patient. Accordingly, the single valve element 68 is moved away from the valve seat 66 by the differential pressures acting thereon. The pressures and consequent air flow in the passages 52 and chamber 32 act on the valve element 68 to cause continued movement of the valve element 68 until its surface or side 72, which is opposite to the surface 70 and parallel thereto, moves into engagement with the valve seat 64 to prevent communication between the passage 22 and the chamber 32.
  • the passage 58 communicates with the passage 52 through the chamber 32. Accordingly, an air flow due to natural exhalation of air from the lungs of the patient occurs and continues as long as the lung pressure of the patient and consequent air flow is suflicient to hold the valve element 68 out of engagement with the valve seat 66 and in engagement with the valve seat 64. This pressure of the patients lungs and consequent air flow is ordinarily suflicient to maintain the valve element 68 in engagement with the valve seat 64 and out of engagement with the valve seat 66 until the attendant again exhales through the passage 22.
  • the attendant inhales as the patient exhales by removing his mouth from the mouthpiece 26 and turning his head to avoid the patients exhalation gases.
  • the attendant can inhale through his nose without removing his mouth from the mouthpiece 26.
  • the housing section 12 can also be provided with a check valve which will permit the attendant to inhale through the mouthpiece 26, drawing air from the ambient atmosphere into and through the passage 22.
  • FIG. 3 A modification of the fluid distribution device is shown in FIG. 3 wherein a single valve element 80, which is preferably formed of a pliable material such as rubber, is employed.
  • the single valve element 80 includes a substantially planar and circular base portion 82, which has a greater diameter than the annular valve seat 66.
  • a surface or side 84 of the base portion 82 engages the annular valve seat 66 when the attendant exhales through the passage 22.
  • the base portion 82 is surrounded by an outwardly diverging peripheral flange portion or skirt 86.
  • the flange portion or skirt 86 projects from surface or side 88 of the base poriton 82.
  • the surface or side 88 is disposed on the opposite side from the surface or side 84 of the 6 base portion 82 and is parallel to the surface or side 84.
  • the annular ridge which forms the annular seat 64, is omitted.
  • the end face 48 of the housing section 12 functions as a valve seat for cooperation with the flange portion or skirt 86 of the single valve element
  • the surface 84 of the base portion 82 of the element 80 lightly contacts the annular valve seat 66 while the flange portion or skirt 86 lightly contacts the end face 48 of the housing section 12.
  • the outer diameter of the flange portion or skirt. 86 is only slightly less than the diameter of the innermost ends of the projections 46.
  • the projections 46 of the inner wall 42 guide the valve element 80 during movement within the chamber 32.
  • the flange portion or skirt 86 When the attendant stops exhaling through the passage 22, the flange portion or skirt 86 returns to engage the end face 48 of the housing section 12. When this occurs, the exhalation pressure and consequent air flow from the patient through the passage 52 and chamber 32 is sufficient to move the base portion 82 away from engagement with the valve seat 66 whereby the patient may exhale through the passage 52, the chamber 32, and the passage 58 to the atmosphere. The exhalation pressure and consequent air flow by the patient also causes firm seating of the flange portion or skirt 86 against the end face 48 to insure that none of the air from the patient enters the passage 22.
  • the central portion of the base portion 82 tends to curve upwardly and engage the web 40 due to the pressures within the passages 52 and 58 and possible suction pressure created within the passage 22 by the attendant inhaling through his nose and indirectly through his mouth from the passage 22.
  • the web 40 insures that the valve element 80 is not moved upwardly so as to be incapable of returning to the position wherein it engages the valve seat 66.
  • valve element 80 Because of the overall size of the valve element 80 wtih respect to the valve seat 66 and the slight axial distance between the end face 48 and the valve seat 66, the valve element 80 will not be urged downwardly into the passage 58 to any degree. Thus, it is not necessary to provide any type of web support within the passage 58 to limit movement of the valve element 80 thereinto.
  • valve element 80 functioning as a fluid distribution valve to automatically assume the proper position during each phase of the breathing cycle.
  • valve assemblies of the present invention have been described for use with a breathing aid device, it should be understood that the valve assemblies of the present invention may be readily utilized to control fluid flow between various passages or ports wherein there are changes at intermittent times in the pressures existing Within-one or more of the passages or ports.
  • the housing selections 12 and 14 and the mouthpiece 26 are preferably formed of a suitable plastic such as styrene, it should be understood that any material, preferably one that is non-corrosive, may be employed.
  • breathing aid device of the present invention has been described for use with an operator or attendant supplying the air to the patient to induce inhalation, it should be understood that any type of manual or automatic air supplying means could be attached to either the housing section 12 or the mouthpiece 26 if desired.
  • valve assemblies of the present invention may be used with the passage 22 communicating through check valves with the ambient atmosphere. In this arrangement, all inhaling by the attendant would be through his mouth.
  • the fluid distribution valve of the present invention does not require any type of biasing element but merely depends upon the pressure differentials acting on the movable valve element.
  • the fluid distribution device of the present invention may be utilized to handle corrosive material, for example, since the housing and the valve element 68 or 80 are preferably formed of a non-corrosive material.
  • An advantage of this invention is that the breathing assistance device is relatively inexpensive in comparison with the presently available mouth-to-mask resuscitators. Another advantage of this invention is that any planar element such as a coin, for example, may be substituted for the valve element in an emergency. A further advantage of this invention is that the valve is the only moving part in the valve assembly. Still another advantage of this invention is that the need for any direct support construction to the movable valve element or member is eliminated.
  • a valve assembly comprising a housing having a fluid receiving chamber therein, a plurality of passages communicating with said chamber, a first of said passages being surrounded by a first valve seat at the end of said first passage communicating with said chamber,
  • a second of said passages being surrounded by a second valve seat at the end of said second passage communicating with said chamber, a single valve element disposed within said chamber and free to move in response to gravitational forces between said first and second valve seats, a third of said passages always being in communication with said chamber irrespective of the position of said single valve element, said single valve element having an unsupported periphery, said single valve element being movable within said chamber in response to pressure differential acting thereon from any fluid pressures in said passages to engage said first valve seat in a first position to prevent communication from said first passage to said chamber and to engage said second valve seat in a second position to prevent communication from said second passage to said chamber, said valve element when in said second position engaging said second valve seat with one side thereof and having an area of said one side projecting outwardly from the outer periphery of said second valve seat, means to direct fluid entering said chamber from said third passage against said area of said one side to move said valve element away from said second valve seat, means cooperating with a portion of said single valve element to in
  • valve assembly according to claim 1 in which said single valve element is imperforate.
  • valve assembly according to claim 1 in which said single valve element is substantially planar.
  • valve assembly according to claim 1 in which said chamber has its Wall fluted to form channels, said cooperating means comprising the portions of the wall between the channels together with the periphery of said valve element, said means to direct fluid comprising said channels.
  • each of said passages has its longitudinal axis coaxial with the longitudinal axis of said housing, and said chamber has its longitudinal axis coaxial with the longitudinal axis of said housing.
  • said first valve seat includes an annular wall portion surrounding said first passage, said wall portion supporting an annular ridge encircling said first passage, said ridge limiting the area of contact between said first valve seat and said valve element.
  • a valve assembly including a housing having a fluid receiving chamber therein, said housing having a pair of annular valve seats disposed in confronting relation therein, each of said valve seats surrounding a passage communicating between said chamber and the exterior of said housing, a valve plate having an unsupported periphery and free to move in said chamber in response to gravitational forces, said valve plate having oppositely facing surfaces with one of said surfaces engaging one of said valve seats when said valve plate is in a first position and the other of said surfaces engaging the other of said valve seats when said valve plate is in a second position, said valve plate when in said second position having an area of said other surface projecting outwardly from the outer periphery of said other of said valve seats, said housing having a third passage communicating with the exterior of said housing, means to direct fluid entering said chamber from said third passage against said area of said other surface to move said valve plate away from said other valve seat, and means cooperating with the peripheral edge of said valve plate to insure that said valve plate moves only between said first and second positions.
  • valve assembly in which said chamber has its wall fluted to form channels, the portions of the wall between the channels comprising said cooperating means and said means to direct comprising the portions of said wall defining said channels.
  • valve assembly according to claim 8 in which said valve plate is substantially planar.
  • valve assembly according to claim 8 in which said valve plate is imperforate.
  • valve assembly according to claim 8 in which said valve plate is imperforate and substantially planar.

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  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
US3518989D 1966-02-14 1966-02-14 Valve assembly Expired - Lifetime US3518989A (en)

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US52727966A 1966-02-14 1966-02-14

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FR (1) FR1553687A (fr)
GB (1) GB1181411A (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636968A (en) * 1970-10-05 1972-01-25 Watts Regulator Co Cross-connection control valve
US3851658A (en) * 1969-08-09 1974-12-03 Norbro Pneumatics Ltd Valve
US3957046A (en) * 1974-11-27 1976-05-18 Salvatore G. Militana Disposable mouth to mouth resuscitation device
US4449525A (en) * 1981-02-08 1984-05-22 White Daniel S Pulmonary resuscitator
US4462400A (en) * 1981-05-28 1984-07-31 Elliot Simons Swimming apparatus
US4489723A (en) * 1981-05-28 1984-12-25 Elliot Simons Swimming apparatus
US4520811A (en) * 1981-02-08 1985-06-04 Grove Medical Supply, Inc. Pulmonary resuscitator
US4811730A (en) * 1988-07-18 1989-03-14 Seitz Corporation CPR face mask and method of using same
US5119809A (en) * 1991-05-28 1992-06-09 Gerson Howard J Mouth-to-mouth with valve and barrier
US5152283A (en) * 1991-04-15 1992-10-06 Yamasaki Robert N Resuscitator tube with mouthpiece sealing means
US5469842A (en) * 1994-07-11 1995-11-28 Flynn; Stephen CPR face mask
US5562093A (en) * 1995-09-06 1996-10-08 Gerson; Howard J. Mouth-to-mouth resuscitation barrier
EP1152787A1 (fr) * 1998-12-24 2001-11-14 Resmed Limited Valve anti-asphyxie
WO2003004082A1 (fr) * 2001-05-31 2003-01-16 Seleon Gmbh Valve expiratoire pour appareils de cpap, corps de valve et procede correspondant
US20040255948A1 (en) * 2003-06-18 2004-12-23 Smith Ian Malcolm Vent and/or diverter assembly for use in breathing apparatus
US20080257351A1 (en) * 2007-04-19 2008-10-23 David Gitschlag Resuscitation device
EP2868339A1 (fr) * 2013-11-04 2015-05-06 Stamford Devices Limited Système d'administration d'un aérosol
US10092712B2 (en) 2013-11-04 2018-10-09 Stamford Devices Limited Aerosol delivery system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8514849D0 (en) * 1985-06-12 1985-07-17 Vitalograph Ltd Breathing aid
GB2198957A (en) * 1986-12-09 1988-06-29 James Ian Brayshaw Mouth to mouth resuscitator
GB2204498B (en) * 1987-05-06 1991-04-17 Polyplas Ltd Device for use in mouth-to-mouth resuscitation
DE19932595C2 (de) * 1999-07-13 2002-10-31 Behr Gmbh & Co Drei-Wege-Verbindungsstück mit einem Ventil

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US2223944A (en) * 1937-03-26 1940-12-03 Albert E Roy Check valve
US2564922A (en) * 1950-02-17 1951-08-21 Francis T N Patten Pressure applying and relieving device
US2567391A (en) * 1946-06-27 1951-09-11 Theodore E Mead Exhaust valve structure
US2594999A (en) * 1950-03-22 1952-04-29 James D Robinson Antibackflow valve
US2887104A (en) * 1958-03-12 1959-05-19 Sovinsky Eugene Mask to mask resuscitator
GB875790A (en) * 1958-07-07 1961-08-23 Henry W Seeler Breathing control valve
GB901357A (en) * 1960-04-29 1962-07-18 Siebe Gorman & Co Ltd Improvements in or relating to a device for administering mouth-to-mouth artificial respiration
US3092130A (en) * 1960-12-23 1963-06-04 Westinghouse Air Brake Co Diaphragm double check valve device
US3099985A (en) * 1960-12-21 1963-08-06 Porter C Wilson Resuscitator
US3124124A (en) * 1957-10-16 1964-03-10 cross
US3196890A (en) * 1961-11-28 1965-07-27 Modernair Corp Double acting check valve
GB1006984A (en) * 1964-01-01 1965-10-06 Wilhelm Sohngen Improvements in or relating to breathing apparatus
US3251359A (en) * 1963-04-25 1966-05-17 Ismach Aaron Automatic intermittent positive pressure ventilators
US3252457A (en) * 1961-10-27 1966-05-24 Mastercraft Medical And Ind Co Resuscitation device for mouth-tomouth respiration
US3262446A (en) * 1963-11-18 1966-07-26 Air Shields Resuscitator
US3265062A (en) * 1962-07-14 1966-08-09 Hesse Holger Valve for breathing apparatus
US3285267A (en) * 1964-03-13 1966-11-15 Westinghouse Air Brake Co Quick release valve device
US3286710A (en) * 1962-02-09 1966-11-22 Jr Roscoe G Bartlett Apparatus for use in mouth-to-mouth resuscitation
FR1509355A (fr) * 1966-01-19 1968-01-12 Aga Ab Appareil respiratoire muni d'un dispositif permettant de pratiquer la respiration artificielle
US3366133A (en) * 1963-12-12 1968-01-30 Aga Ab Arrangement in breathing apparatus

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2223944A (en) * 1937-03-26 1940-12-03 Albert E Roy Check valve
US2567391A (en) * 1946-06-27 1951-09-11 Theodore E Mead Exhaust valve structure
US2564922A (en) * 1950-02-17 1951-08-21 Francis T N Patten Pressure applying and relieving device
US2594999A (en) * 1950-03-22 1952-04-29 James D Robinson Antibackflow valve
US3124124A (en) * 1957-10-16 1964-03-10 cross
US2887104A (en) * 1958-03-12 1959-05-19 Sovinsky Eugene Mask to mask resuscitator
GB875790A (en) * 1958-07-07 1961-08-23 Henry W Seeler Breathing control valve
GB901357A (en) * 1960-04-29 1962-07-18 Siebe Gorman & Co Ltd Improvements in or relating to a device for administering mouth-to-mouth artificial respiration
US3099985A (en) * 1960-12-21 1963-08-06 Porter C Wilson Resuscitator
US3092130A (en) * 1960-12-23 1963-06-04 Westinghouse Air Brake Co Diaphragm double check valve device
US3252457A (en) * 1961-10-27 1966-05-24 Mastercraft Medical And Ind Co Resuscitation device for mouth-tomouth respiration
US3196890A (en) * 1961-11-28 1965-07-27 Modernair Corp Double acting check valve
US3286710A (en) * 1962-02-09 1966-11-22 Jr Roscoe G Bartlett Apparatus for use in mouth-to-mouth resuscitation
US3265062A (en) * 1962-07-14 1966-08-09 Hesse Holger Valve for breathing apparatus
US3251359A (en) * 1963-04-25 1966-05-17 Ismach Aaron Automatic intermittent positive pressure ventilators
US3262446A (en) * 1963-11-18 1966-07-26 Air Shields Resuscitator
US3366133A (en) * 1963-12-12 1968-01-30 Aga Ab Arrangement in breathing apparatus
GB1006984A (en) * 1964-01-01 1965-10-06 Wilhelm Sohngen Improvements in or relating to breathing apparatus
US3285267A (en) * 1964-03-13 1966-11-15 Westinghouse Air Brake Co Quick release valve device
FR1509355A (fr) * 1966-01-19 1968-01-12 Aga Ab Appareil respiratoire muni d'un dispositif permettant de pratiquer la respiration artificielle

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851658A (en) * 1969-08-09 1974-12-03 Norbro Pneumatics Ltd Valve
US3636968A (en) * 1970-10-05 1972-01-25 Watts Regulator Co Cross-connection control valve
US3957046A (en) * 1974-11-27 1976-05-18 Salvatore G. Militana Disposable mouth to mouth resuscitation device
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US9629973B2 (en) 2003-06-18 2017-04-25 Resmed Limited Oxygen diverter valve
US10960164B2 (en) 2003-06-18 2021-03-30 ResMed Pty Ltd Oxygen diverter valve
US7559326B2 (en) * 2003-06-18 2009-07-14 Resmed Limited Vent and/or diverter assembly for use in breathing apparatus
US8146596B2 (en) 2003-06-18 2012-04-03 Resmed Limited Vent and/or diverter assembly for use in breathing apparatus
US8528562B2 (en) 2003-06-18 2013-09-10 Resmed Limited Oxygen diverter valve
US10814088B2 (en) 2003-06-18 2020-10-27 ResMed Pty Ltd Vent arrangement for patient interface
US20080156330A1 (en) * 2003-06-18 2008-07-03 Resmed Limited Vent and/or Diverter Assembly for Use in Breathing Apparatus
US10549059B2 (en) 2003-06-18 2020-02-04 ResMed Pty Ltd Respiratory mask system with vent assembly
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US10092712B2 (en) 2013-11-04 2018-10-09 Stamford Devices Limited Aerosol delivery system
EP2868339A1 (fr) * 2013-11-04 2015-05-06 Stamford Devices Limited Système d'administration d'un aérosol
US11534559B2 (en) 2013-11-04 2022-12-27 Stamford Devices Limited Aerosol delivery system
US11759581B2 (en) 2013-11-04 2023-09-19 Stanford Devices Limited Aerosol delivery system

Also Published As

Publication number Publication date
DE1600914A1 (de) 1972-01-27
DE1600914B2 (de) 1972-09-07
GB1181411A (en) 1970-02-18
FR1553687A (fr) 1969-01-17

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