US3683907A - Fresh air respirator - Google Patents
Fresh air respirator Download PDFInfo
- Publication number
- US3683907A US3683907A US56413A US3683907DA US3683907A US 3683907 A US3683907 A US 3683907A US 56413 A US56413 A US 56413A US 3683907D A US3683907D A US 3683907DA US 3683907 A US3683907 A US 3683907A
- Authority
- US
- United States
- Prior art keywords
- cup
- air
- porous member
- arms
- arm
- 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
Links
- 239000000428 dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/12—Respiratory apparatus with fresh-air hose
-
- 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
- A62B18/003—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 having means for creating a fresh air curtain
Definitions
- a cup contains a porous member that is spaced from its bottom wall to form an air chamber behind the porous member.
- the cup has an opening communicating with the chamber and there is means for supporting the cup in front of a persons nose and mouth with the porous member facing them.
- a stream of air is conducted to the cup opening to maintain the chamber full of air under pressure so that air will diffuse through the porous member and issue therefrom to provide fresh air around the nose and mouth.
- respirator which is simple in construction and operation, which is fully adjustable, and which bathes a persons nose and mouth area infresh air without entraining surrounding dust orother contaminants.
- FIG. 1 is a side view of a respirator in operative posi tron
- a shallow cup of any suitable material has a bottom wall 1 and an upstanding side wall 2. Inside the cup there is a porous member 3 that preferably is a porous block fitting tightly against the side wall of the cup. Various materials may be used, one of the best being an open cell foamed plastic which is light and inexpensive.
- the porous member does not fill the cup but, as shown in FIG. 2, is spaced from the bottom wall to form an air chamber 4 behind or below the porous member.
- a wall of the cup, preferably the bottom wall,. is provided with an opening 5 that is connected with a flexiblehose 6 leading fromasuitable source of air under pressure. The air willmaintain the chamber in the cup full of air under pressure, and that air will diffuse through the porous member and issue from it in a multiplicity of tiny streams having low velocity.
- the supporting means is fastened to headgear, such as a miners helmet 8 or the like.
- the support may be a single arm, although two arms 9 are better.
- the arms are fastened by screws 10 and thumb nuts 11 to the opposite sides of the helmet. From that point the arms extend forward and downward across the cheek and then inward in front of the chin.
- the parallel lower end portions of these arms are provided with longitudinal slots 12 or, what amounts to the same thing,a plurality of longitudinally spaced openings.
- trunnions 13 that are screw threaded. These trunnions extend through the slots in the arms.
- Spacers 14 may be mounted on the trunnions between the cup and the arms, and thumb nuts 15 are screwed onto the outer be connected to one of the arms by suitable clips 16 and extend around to a fitting 17 on the back of the helmet to which another hose 18 is detachably connected th f f s g ili t e ug i s t'ilfi djfliiabie; up and down, forward and backward, and tilting, so the user can place it in a position where the air issuing from the porous member will completely cover his nose and mouth. Since the cup is close to the face and the issuing air is diffused and haslow velocity, it does not have an aspirating or entraining effect that would pull in surrounding dust or smoke for the user to inhale.
- a fresh air respirator comprising a cup having a bottom wall surrounded by a side wall, the side of the cup opposite said bottom wall being open, a porous member mounted in the cup and spaced from its bottom wall to form an air chamber behind said member, a wall of the cup being provided with an opening communicating with said chamber, arm means connectable to a headgear for supporting the cup spaced in front of a persons nose and mouth with the exposed. side of the porous member facing them and open to the atmosphere, and means for continually delivering a stream of air to said cup opening to maintain said chamber full of air under pressure, whereby air will diffuse through the porous member and issue therefrom directly into the atmosphere.
- a respirator according to claim 1 in which said supporting means includes an arm provided at one end opposite sides of the cup through said slots, said trunnions being rotatable in the slots and slidable lengthwise thereof, and nuts screwed on the outer ends of the trunnions and against said arms to lock the cup in a desired position relative to the arms.
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
A cup contains a porous member that is spaced from its bottom wall to form an air chamber behind the porous member. The cup has an opening communicating with the chamber and there is means for supporting the cup in front of a person''s nose and mouth with the porous member facing them. A stream of air is conducted to the cup opening to maintain the chamber full of air under pressure so that air will diffuse through the porous member and issue therefrom to provide fresh air around the nose and mouth.
Description
United States Patent [151 3,683,907 [4 Aug. 15,1972
Cotabish [54] FRESH AIR RESPIRATOR [72] Inventor: Harry N. Cotabish, Allison Park, Pa.
[73] Assignee: Mine Safety Appliances Company,
Pittsburgh, Pa.
[22] Filed: July 20, 1970 [21] Appl. No.: 56,413
[52] US. Cl .Q ..128/l45 [51] Int. Cl. ..A61m 16/00 [58] Field of Search ..128/l40, 146.7, 142.6,141, 128/145, 145.5, 185
[56] References Cited UNITED STATES PATENTS 2,332,662 10/1943 Nathanson .....I28/l42.6 X
3,101,709 8/1963 Gruenewaelder ..l28/ 146.2
3,040,741 6/1962 Carolan ..l28/I46.7
2,376,871 5/1945 Fink ..128/146.7
FOREIGN PATENTS OR APPLICATIONS 324,909 l/1930 Great Britain 128/1426 Primary Examiner-Richard A. Gaudet Assistant Examiner-G. F. Dunne Attorney-Brown, Murray, Flick & Peckham [57] ABSTRACT A cup contains a porous member that is spaced from its bottom wall to form an air chamber behind the porous member. The cup has an opening communicating with the chamber and there is means for supporting the cup in front of a persons nose and mouth with the porous member facing them. A stream of air is conducted to the cup opening to maintain the chamber full of air under pressure so that air will diffuse through the porous member and issue therefrom to provide fresh air around the nose and mouth.
4 Claims, 3 Drawing Figures and actually draws it in toward the nose and mouth so that it is inhaled in spite of the air curtain.
It is among the objects of this invention to provide a respirator which is simple in construction and operation, which is fully adjustable, and which bathes a persons nose and mouth area infresh air without entraining surrounding dust orother contaminants.
The preferred embodiment of the invention is illustrated in the accompanying drawings, in which FIG. 1 is a side view of a respirator in operative posi tron;
- FIG. 2 is an enlarged view, partly in section, taken on the line [1-11 of FIG. 1; and i V FIG. 3 is an enlarged view taken on the line III-III of FIG. 1.
Referring to the drawings, a shallow cup of any suitable material has a bottom wall 1 and an upstanding side wall 2. Inside the cup there is a porous member 3 that preferably is a porous block fitting tightly against the side wall of the cup. Various materials may be used, one of the best being an open cell foamed plastic which is light and inexpensive. The porous member does not fill the cup but, as shown in FIG. 2, is spaced from the bottom wall to form an air chamber 4 behind or below the porous member. To supply this chamber with air, a wall of the cup, preferably the bottom wall,.is provided with an opening 5 that is connected with a flexiblehose 6 leading fromasuitable source of air under pressure. The air willmaintain the chamber in the cup full of air under pressure, and that air will diffuse through the porous member and issue from it in a multiplicity of tiny streams having low velocity.
Since the air issuing from the porous member is to be directed against the nose and mouth of a person, provision is made for supporting the cup in a position suitable for that purpose. Preferably, the supporting means is fastened to headgear, such as a miners helmet 8 or the like. The support may be a single arm, although two arms 9 are better. The arms are fastened by screws 10 and thumb nuts 11 to the opposite sides of the helmet. From that point the arms extend forward and downward across the cheek and then inward in front of the chin. The parallel lower end portions of these arms are provided with longitudinal slots 12 or, what amounts to the same thing,a plurality of longitudinally spaced openings. To fasten the cup to the arms, opposite sides of the cup are provided with aligned trunnions 13 that are screw threaded. These trunnions extend through the slots in the arms. Spacers 14 may be mounted on the trunnions between the cup and the arms, and thumb nuts 15 are screwed onto the outer be connected to one of the arms by suitable clips 16 and extend around to a fitting 17 on the back of the helmet to which another hose 18 is detachably connected th f f s g ili t e ug i s t'ilfi djfliiabie; up and down, forward and backward, and tilting, so the user can place it in a position where the air issuing from the porous member will completely cover his nose and mouth. Since the cup is close to the face and the issuing air is diffused and haslow velocity, it does not have an aspirating or entraining effect that would pull in surrounding dust or smoke for the user to inhale.
According to the provisions of the patent statutes, I have explained the principle of my invention and have illustrated and described what I now consider to represent its best embodiment. However, I desire to have it understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described.
I claim:
1. A fresh air respirator comprising a cup having a bottom wall surrounded by a side wall, the side of the cup opposite said bottom wall being open, a porous member mounted in the cup and spaced from its bottom wall to form an air chamber behind said member, a wall of the cup being provided with an opening communicating with said chamber, arm means connectable to a headgear for supporting the cup spaced in front of a persons nose and mouth with the exposed. side of the porous member facing them and open to the atmosphere, and means for continually delivering a stream of air to said cup opening to maintain said chamber full of air under pressure, whereby air will diffuse through the porous member and issue therefrom directly into the atmosphere.
2. A respirator according to claim 1, in which said block is an open cell foamed plastic.
3. A respirator according to claim 1, in which said supporting means includes an arm provided at one end opposite sides of the cup through said slots, said trunnions being rotatable in the slots and slidable lengthwise thereof, and nuts screwed on the outer ends of the trunnions and against said arms to lock the cup in a desired position relative to the arms.
* l I i
Claims (4)
1. A fresh air respirator comprising a cup having a bottom wall surrounded by a side wall, the side of the cup opposite said bottom wall being open, a porous member mounted in the cup and spaced from its bottom wall to form an air chamber behind said member, a wall of the cup being provided with an opening communicating with said chamber, arm means connectable to a headgear for supporting the cup spaced in front of a person''s nose and mouth with the exposed side of the porous member facing them and open to the atmosphere, and means for continually delivering a stream of air to said cup opening to maintain said chamber full of air under pressure, whereby air will diffuse through the porous member and issue therefrom directly into the atmosphere.
2. A respirator according to claim 1, in which said block is an open cell foamed plastic.
3. A respirator according to claim 1, in which said supporting means includes an arm provided at one end with a longitudinal slot, means at the opposite end of the arm for connecting it to headgear, and means extending through said slot connecting one side of the cup to the arm, said last-mentioned means being adjustable along the slot and rotatable therein.
4. A respirator according to claim 1, in which said supporting means include a pair of laterally spaced inclined arms provided at their lower ends with longitudinal slots, means at the upper ends of the arms for connecting them to headgear, trunnions projecting from opposite sides of the cup through said slots, said trunnions being rotatable in the slots and slidable lengthwise thereof, and nuts screwed on the outer ends of the trunnions and against said arms to lock the cup in a desired position relative to the arms.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5641370A | 1970-07-20 | 1970-07-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3683907A true US3683907A (en) | 1972-08-15 |
Family
ID=22004229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US56413A Expired - Lifetime US3683907A (en) | 1970-07-20 | 1970-07-20 | Fresh air respirator |
Country Status (2)
Country | Link |
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US (1) | US3683907A (en) |
DE (1) | DE2135928C3 (en) |
Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3921223A (en) * | 1974-06-12 | 1975-11-25 | David V Hoyecki | Air shield for welders and other craftsmen exposed to noxious fumes |
US4282869A (en) * | 1978-07-21 | 1981-08-11 | Montreal General Hospital Research Inst. | Apparatus for oxygen treatment |
US4593688A (en) * | 1984-05-30 | 1986-06-10 | Payton Hugh W | Apparatus for the delivery of oxygen or the like |
GB2228420A (en) * | 1989-02-14 | 1990-08-29 | Hellberg Int Ltd | Holder for respirator |
US5048516A (en) * | 1987-07-28 | 1991-09-17 | Soederberg Stig | Respiratory mask |
US5139017A (en) * | 1991-06-03 | 1992-08-18 | Mccloud Russell D | Bicycle helmet having air filtering and breathing means |
US5267557A (en) * | 1992-08-17 | 1993-12-07 | Her Mou Lin | Nose mask with a filtering device |
US5477852A (en) * | 1991-10-29 | 1995-12-26 | Airways Ltd., Inc. | Nasal positive airway pressure apparatus and method |
US5538000A (en) * | 1995-02-06 | 1996-07-23 | Hans Rudolph, Inc. | Airflow delivery system |
US5657752A (en) * | 1996-03-28 | 1997-08-19 | Airways Associates | Nasal positive airway pressure mask and method |
US5687715A (en) * | 1991-10-29 | 1997-11-18 | Airways Ltd Inc | Nasal positive airway pressure apparatus and method |
EP0941136A1 (en) * | 1997-09-15 | 1999-09-15 | Airsep Corporation | Non-contact gas dispenser and apparatus for use therewith |
WO2002056966A1 (en) * | 2001-01-19 | 2002-07-25 | Florindo De Luca | Individual portable air purifier |
US6435184B1 (en) * | 2000-09-01 | 2002-08-20 | Tien Lu Ho | Gas mask structure |
US6450166B1 (en) | 2000-05-17 | 2002-09-17 | Southmedic Incorporated | Patient oxygen delivery system |
US20020148470A1 (en) * | 2000-01-13 | 2002-10-17 | Dr. Brent Blue | Headset including oximeter and method of using oximeter in oxygen supply system |
US20030000001A1 (en) * | 2001-07-02 | 2003-01-02 | Be Intellectual Property, Inc. | Multi-phase headset for pilots |
US6595207B1 (en) | 2000-09-11 | 2003-07-22 | Southmedic Incorporated | Oxygen diffuser for patient oxygen delivery system |
US6619288B2 (en) * | 2000-11-15 | 2003-09-16 | Deka Products Limited Partnership | Breathing mask with incomplete headband |
US20030188743A1 (en) * | 2002-04-08 | 2003-10-09 | Joseph Manne | Air curtain device |
US6675796B2 (en) * | 2001-10-12 | 2004-01-13 | Southmedic Incorporated | Lightweight oxygen delivery device for patients |
US20040025884A1 (en) * | 2002-08-06 | 2004-02-12 | Mckown Joseph R. | Nasal cannula retainer |
US6691706B2 (en) * | 2002-01-02 | 2004-02-17 | Thomas Harrison Ives | Personal humidifier |
US20040221841A1 (en) * | 2003-05-05 | 2004-11-11 | Herschel David Matthew | Breathing apparatus for reducing fogging of lenses caused by breath vapor |
US20050061316A1 (en) * | 2002-04-08 | 2005-03-24 | Joseph Manne | Air curtain device with flexible shield |
FR2867390A1 (en) | 2004-03-09 | 2005-09-16 | Philippe Perez | Air distributor for sportsman, has telescopic part, adjusting system and air distribution adjusting device, and flexible tubes and bend that are maintained on headband fixed with locking thumb wheel to hold conduit and ear-flap |
US20060081243A1 (en) * | 2004-10-15 | 2006-04-20 | Southmedic Incorporated | Patient oxygen delivery mask |
US20060081248A1 (en) * | 2004-10-15 | 2006-04-20 | Southmedic Incorporated | Patient oxygen delivery mask |
US20060196511A1 (en) * | 2005-03-01 | 2006-09-07 | Ventlab Corporation | Headgear for noninvasive ventilation interface |
US20060196510A1 (en) * | 2004-10-15 | 2006-09-07 | Mcdonald Lee | Patient oxygen delivery mask |
WO2007028877A2 (en) * | 2005-09-09 | 2007-03-15 | Philippe Perez | Portable gas dispensing device |
US20080053457A1 (en) * | 2004-07-30 | 2008-03-06 | Mcdonald Lee | Oxygen Delivery Systems |
US20080196719A1 (en) * | 2007-02-16 | 2008-08-21 | Wasatch Manufacturing, Llc | Supplemental air diffusion devices, kits and methods |
US20100294270A1 (en) * | 2007-11-12 | 2010-11-25 | Curran Desmond T | Respirator Assembly with Air Flow Direction Control |
US20110186045A1 (en) * | 2010-01-29 | 2011-08-04 | Lenard Erickson | Breathing Apparatus |
GB2501368A (en) * | 2012-04-21 | 2013-10-23 | Smiths Medical Int Ltd | Apparatus for stimulating the trigeminal nerve |
US20150328084A1 (en) * | 2014-05-19 | 2015-11-19 | Jeffrey Ward Cash | Intraoral fluid delivery system and method |
US20160030700A1 (en) * | 2013-03-15 | 2016-02-04 | Jb Scientific, Llc | Taste inhibition through the use of an air flow |
US9629411B2 (en) | 2013-10-04 | 2017-04-25 | Dicksbridge, Inc. | Head garment for privacy |
JP2017536181A (en) * | 2014-11-28 | 2017-12-07 | カーライル フルイド テクノロジーズ,インコーポレイティド | Air supply visor |
US9849263B2 (en) | 2013-03-12 | 2017-12-26 | Touchfree O2 Llc | Method and device for supplying oxygen to a patient |
US10786694B2 (en) * | 2014-11-21 | 2020-09-29 | Avea Capital Ltd. | Air-supply device |
US10806953B2 (en) | 2014-04-16 | 2020-10-20 | Sata Gmbh & Co. Kg | Breathing apparatus |
US10953248B2 (en) | 2014-12-04 | 2021-03-23 | ResMed Pty Ltd | Wearable device for delivering air |
US20210355963A1 (en) * | 2020-05-18 | 2021-11-18 | Printec Co., Ltd. | Neckband fan |
US20220080227A1 (en) * | 2020-09-15 | 2022-03-17 | Ceromaze Inc. | Wearable, maskless respiratory isolation device |
US11358011B2 (en) * | 2020-07-16 | 2022-06-14 | Aerocontain Technologies Inc. | Aerosol protection helmet |
US11388982B1 (en) * | 2018-09-26 | 2022-07-19 | Benjamin McDonnell | Air hose clamping mechanism and hook device and method |
US11478602B2 (en) | 2013-03-15 | 2022-10-25 | Jb Scientific, Llc | Taste inhibition through the use of an air flow |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2903921C2 (en) * | 1979-02-02 | 1984-04-19 | Drägerwerk AG, 2400 Lübeck | Respirator hood |
GB2323294B (en) * | 1995-12-08 | 2000-02-16 | Geo Limited | Breathing apparatus and nozzle therefor |
GB9525097D0 (en) * | 1995-12-08 | 1996-02-07 | Geo Ltd | Breathing apparatus and nozzle therefor |
DE202006004503U1 (en) * | 2006-03-22 | 2006-11-09 | Dittmer, Ewald | Holder for oxygen inhalation tube for tracheostomy patient, holds the tube close to the tracheostomy site to prevent injury and irritation |
DE202014003214U1 (en) * | 2014-04-16 | 2015-03-11 | Sata Gmbh & Co. Kg | Respiratory protection device |
Citations (5)
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---|---|---|---|---|
GB324909A (en) * | 1928-10-30 | 1930-01-30 | John Ambrose Sadd | Improvements in respirators and the like |
US2332662A (en) * | 1942-09-21 | 1943-10-26 | Nathanson Max | Gas mask |
US2376871A (en) * | 1941-05-24 | 1945-05-29 | Fink Rudolph | Respirator mask |
US3040741A (en) * | 1958-12-15 | 1962-06-26 | Puritan Compressed Gas Corp | Quick donning harness for oxygen masks |
US3101709A (en) * | 1959-04-06 | 1963-08-27 | Lou A Gruenewaelder | Face masks |
-
1970
- 1970-07-20 US US56413A patent/US3683907A/en not_active Expired - Lifetime
-
1971
- 1971-07-17 DE DE2135928A patent/DE2135928C3/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB324909A (en) * | 1928-10-30 | 1930-01-30 | John Ambrose Sadd | Improvements in respirators and the like |
US2376871A (en) * | 1941-05-24 | 1945-05-29 | Fink Rudolph | Respirator mask |
US2332662A (en) * | 1942-09-21 | 1943-10-26 | Nathanson Max | Gas mask |
US3040741A (en) * | 1958-12-15 | 1962-06-26 | Puritan Compressed Gas Corp | Quick donning harness for oxygen masks |
US3101709A (en) * | 1959-04-06 | 1963-08-27 | Lou A Gruenewaelder | Face masks |
Cited By (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3921223A (en) * | 1974-06-12 | 1975-11-25 | David V Hoyecki | Air shield for welders and other craftsmen exposed to noxious fumes |
US4282869A (en) * | 1978-07-21 | 1981-08-11 | Montreal General Hospital Research Inst. | Apparatus for oxygen treatment |
US4593688A (en) * | 1984-05-30 | 1986-06-10 | Payton Hugh W | Apparatus for the delivery of oxygen or the like |
US5048516A (en) * | 1987-07-28 | 1991-09-17 | Soederberg Stig | Respiratory mask |
GB2228420B (en) * | 1989-02-14 | 1993-07-14 | Hellberg Int Ltd | An assembly comprising a holder for a respirator of disposable element type, and carrier means |
GB2228420A (en) * | 1989-02-14 | 1990-08-29 | Hellberg Int Ltd | Holder for respirator |
US5139017A (en) * | 1991-06-03 | 1992-08-18 | Mccloud Russell D | Bicycle helmet having air filtering and breathing means |
US5477852A (en) * | 1991-10-29 | 1995-12-26 | Airways Ltd., Inc. | Nasal positive airway pressure apparatus and method |
US5687715A (en) * | 1991-10-29 | 1997-11-18 | Airways Ltd Inc | Nasal positive airway pressure apparatus and method |
US5267557A (en) * | 1992-08-17 | 1993-12-07 | Her Mou Lin | Nose mask with a filtering device |
US5538000A (en) * | 1995-02-06 | 1996-07-23 | Hans Rudolph, Inc. | Airflow delivery system |
US5657752A (en) * | 1996-03-28 | 1997-08-19 | Airways Associates | Nasal positive airway pressure mask and method |
EP0941136A1 (en) * | 1997-09-15 | 1999-09-15 | Airsep Corporation | Non-contact gas dispenser and apparatus for use therewith |
EP0941136A4 (en) * | 1997-09-15 | 2001-09-12 | Airsep Corp | Non-contact gas dispenser and apparatus for use therewith |
US20020148470A1 (en) * | 2000-01-13 | 2002-10-17 | Dr. Brent Blue | Headset including oximeter and method of using oximeter in oxygen supply system |
US6450166B1 (en) | 2000-05-17 | 2002-09-17 | Southmedic Incorporated | Patient oxygen delivery system |
US6435184B1 (en) * | 2000-09-01 | 2002-08-20 | Tien Lu Ho | Gas mask structure |
US6595207B1 (en) | 2000-09-11 | 2003-07-22 | Southmedic Incorporated | Oxygen diffuser for patient oxygen delivery system |
US6619288B2 (en) * | 2000-11-15 | 2003-09-16 | Deka Products Limited Partnership | Breathing mask with incomplete headband |
US20040055601A1 (en) * | 2001-01-19 | 2004-03-25 | Florindo De Luca | Individual portable air purifier |
WO2002056966A1 (en) * | 2001-01-19 | 2002-07-25 | Florindo De Luca | Individual portable air purifier |
JP2004528866A (en) * | 2001-01-19 | 2004-09-24 | デ・ルカ・フロリンド | Portable air purifier |
US20030000001A1 (en) * | 2001-07-02 | 2003-01-02 | Be Intellectual Property, Inc. | Multi-phase headset for pilots |
US6886559B2 (en) * | 2001-07-02 | 2005-05-03 | Be Intellectual Property, Inc. | Multi-phase headset for pilots |
US6675796B2 (en) * | 2001-10-12 | 2004-01-13 | Southmedic Incorporated | Lightweight oxygen delivery device for patients |
US6691706B2 (en) * | 2002-01-02 | 2004-02-17 | Thomas Harrison Ives | Personal humidifier |
US20050061316A1 (en) * | 2002-04-08 | 2005-03-24 | Joseph Manne | Air curtain device with flexible shield |
US20030188743A1 (en) * | 2002-04-08 | 2003-10-09 | Joseph Manne | Air curtain device |
US7036502B2 (en) * | 2002-04-08 | 2006-05-02 | Joseph Manne | Air curtain device |
US7146976B2 (en) * | 2002-08-06 | 2006-12-12 | Mckown Joseph R | Nasal cannula retainer |
US20040025884A1 (en) * | 2002-08-06 | 2004-02-12 | Mckown Joseph R. | Nasal cannula retainer |
US20040221841A1 (en) * | 2003-05-05 | 2004-11-11 | Herschel David Matthew | Breathing apparatus for reducing fogging of lenses caused by breath vapor |
FR2867390A1 (en) | 2004-03-09 | 2005-09-16 | Philippe Perez | Air distributor for sportsman, has telescopic part, adjusting system and air distribution adjusting device, and flexible tubes and bend that are maintained on headband fixed with locking thumb wheel to hold conduit and ear-flap |
WO2005097018A1 (en) | 2004-03-09 | 2005-10-20 | Philippe Perez | Small respiratory device for distributing pressurised air to a respiratory tract |
US20080053457A1 (en) * | 2004-07-30 | 2008-03-06 | Mcdonald Lee | Oxygen Delivery Systems |
US20060081248A1 (en) * | 2004-10-15 | 2006-04-20 | Southmedic Incorporated | Patient oxygen delivery mask |
US20060081243A1 (en) * | 2004-10-15 | 2006-04-20 | Southmedic Incorporated | Patient oxygen delivery mask |
US20060196510A1 (en) * | 2004-10-15 | 2006-09-07 | Mcdonald Lee | Patient oxygen delivery mask |
US8042540B2 (en) | 2004-10-15 | 2011-10-25 | Southmedic Incorporated | Patient oxygen delivery mask |
US20060196511A1 (en) * | 2005-03-01 | 2006-09-07 | Ventlab Corporation | Headgear for noninvasive ventilation interface |
US7178528B2 (en) * | 2005-03-01 | 2007-02-20 | Lau Greg Y | Headgear for noninvasive ventilation interface |
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Also Published As
Publication number | Publication date |
---|---|
DE2135928B2 (en) | 1974-11-21 |
DE2135928C3 (en) | 1975-07-03 |
DE2135928A1 (en) | 1972-01-27 |
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