US3910269A - Integrated helmet and mask structure - Google Patents
Integrated helmet and mask structure Download PDFInfo
- Publication number
- US3910269A US3910269A US449777A US44977774A US3910269A US 3910269 A US3910269 A US 3910269A US 449777 A US449777 A US 449777A US 44977774 A US44977774 A US 44977774A US 3910269 A US3910269 A US 3910269A
- Authority
- US
- United States
- Prior art keywords
- mask
- face
- helmet
- sealing tube
- shell
- 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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Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/28—Ventilating arrangements
- A42B3/288—Ventilating arrangements with means for attaching respirators or breathing masks
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/18—Face protection devices
- A42B3/22—Visors
- A42B3/228—Visors for military or aviation applications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D10/00—Flight suits
Definitions
- ABSTRACT For flying personnel there is provided a hard shell helmet suitably padded and held out of close contact with the head.
- An integrated visor assembly has an articulated attachment to the helmet movable between an operative position over the wearers face and a lifted position extending over the top of the helmet removed from the face.
- Compound leverage elements making up the attachment determine a path of movement for the visor assembly such that it travels an irregular path allowing it to first lift clear of contact with the face and then travel upwardly to its lifted position.
- An inflatable seal extends around the perimeter of the visor assembly, the seal being inflated with air from the oxygen supply for the breathing mask when in operation over the face of the wearer and being collapsed when deflated providing additional clearance for ease of removal from the face and for storage in its lifted position.
- Personal flight equipment can be said to comprise chiefly of a flight protection helmet equipped with oxygen mask, head-set or ear phones and a smokeprotective visor.
- Another object of the invention is to provide a new and improved helmet and mask integrated structure which is low in profile despite the need for a leverage or related mechanism to permit the mask assembly to be removed from the face.
- Still another object of the invention is to provide a new and improved helmet and mask integrated structure provided with an inflatable seal between the mask assembly and the face of the wearer which can, when desired, be inflated automatically by oxygen pressure normally supplied to the mask and which provides for sufficient mask clearance of the face during donning.
- Still further among the objects of the invention is to provide a mask assembly including an inflatable seal which is of such design and construction that it can be readily fitted to faces of different shape and size without need for changing the shape and size of the mask assembly and associated helmet shell.
- the invention consists in the construction, arrangement, and combination of the various parts of the device, whereby the objects contemplated are attained, hereinafter set forth, pointed out in the appended claims and illustrated in the accompanying drawings.
- FIG. 1 is a side elevational view of one form of the helmet and mask integrated structure shown in operating position on the head of a wearer. 7
- FIG. 2 is a longitudinal sectional view of the structure of FIG. I.
- FIG. 3 is a fragmentary cross sectional view taken on the circular line 3 of FIG. 2 with the seal inflated.
- FIG. 4 is a fragmentary sectional view similar to FIG. 3 but with the seal deflated.
- FIG. 5 is a side elevational view similar to FIG. I but with the visor assembly lifted into inoperative position.
- FIG. 6 is a fragmentary cross sectional view on the line 6-6 of FIG. 1.
- FIG. 7 is a fragmentary longitudinal sectional view on the line 77 of FIG. 5.
- FIG. 8 is a side elevational view of a second form of the invention shown in position on the head of a wearer.
- FIG. 9 is a side elevational view of the same form of the device as in FIG. 8 but with the visor assembly lifted into inoperative position.
- FIG. 10 is a side elevational view of another form of the device shown in operative position.
- FIG. 11 is a side elevational view of the device of FIG. 10 but with the visor assembly lifted into inoperative position.
- FIG. 12 is a front perspective view of a modified form of the invention as shown in operative position on the head of a wearer.
- FIG. 13 is a front perspective view similar to FIG. 12 but with the visor assembly lifted into inoperative position.
- a hard helmet shell 10 equipped with a visor assembly indicated generally by the reference character 11 shown mounted on the head 12 of a wearer with the visor assembly in operative position applied to the wearers face 13.
- a visor cover 14 is fixed in position at the crown of the helmet shell and provides a pocket 15. Extending through the helmet shell is a series of .ventillating perforations l6, and perforations 17 in the visor cover assist the perforations 16 which open into the pocket 15. Perforations serve two functions; to provide for ventilation; to reduce weight, yet still provide protection.
- a shock or energy absorbing liner 18 extends around the entire inner surface of the helmet shell, the liner being of some appropriate foam cushion.
- a sling 20 For supporting the helmet shell and perforce the he]- met and mask integrated structure on the crown of the head 12, there is provided a sling 20 extending fore and aft and to which are applied a forehead cross-web 21, a crown cross web 22, a rear cross-web 23 and a nape cross-web 24 attached to the sling at the junctions shown.
- the sling and cross-webs are provided with elastomer pads 25, 26, 27 and 28 of appreciable depth sufficient to support the helmet shell in a position removed from contact with the head of the wearer providing a space from which heat, from the wearers head can pass outwardly through the perforations 16.
- a chin strap 29 serves to hold the sling and cross-webs in position, the chin strap and the cross-webs being all attached to a lateral webbing 30 surrounding the wearers ears.
- the lining of the helmet shell normally is spaced clear of the head of the wearer and that this spacing may vary to some extent depending upon the shape of the wearers head and the height of the elastomer pads.
- the pads moreover, are yieldable and the sling and cross-webs are likewise yieldable so that should there be an impact on the helmet shell sufficient to compress the pads at one location or another, the wearers head will strike the liner.
- the liner is of a character capable of absorbing the impact and the energy is dissipated, thereby protecting the head of the wearer.
- the attachment of the ear cups to the helmet is flexible to allow lateral spreading to clear the ears for rapid donning. These flexible attachments facilitate folding ear cups into the inside of helmet shell for minimum storage volume.
- the visor assembly 11 in this embodiment consists of two parts, namely, an eye area shell section 31 at a location surrounding the eyes of the wearer and an oralnasal area shell section 32 which is the portion usually identified as a breathing mask and upon which is mounted a regulator 33 capable of accommodating appropriate valving (not shown) for an air or oxygen line 34 and a microphone (not shown) supplied by a microphone line 35.
- a seal indicated generally by the reference character 40 which in the chosen embodiment is a hollow tube, as indicated in FIGS. 3 and 4.
- the tube extends around the lower and side edges of the oral-nasal area shell section 32, the side edges of the eye area shell section 31 and across the upper or forehead portion of the eye area shell section 31 at a location slightly removed from an upper edge 41.
- the seal is continuous and endless.
- there is a transverse section 42 of the seal which extends across the eye area shell section near the line 43 of junction between the eye area shell section and the oral-nasal area shell section.
- thetransverse section 42 is actually attached to a web 44 which lies inside of the eye area shell section 31.
- the transverse section moreover, is in communication with the seal 40 at the point ofjunction.
- an air line 45 shown in FIG. 1, which extends from an air switch 46 supplied in turn from the mask regulator 33.
- an air valve 47 on which is an actuator button 48 which normally tends to move to a shutoff position. As shown in FIG. 1, the actuator button is moved to an on position by engagement therewith of a portion of a composite arm 50.
- a microphone switching arrangement also might be incorporated to switch off an external microphone (boom microphone) and switch on the microphone inside the mask.
- the composite arm consists of a plunger 51, an outer end of which is attached to a bracket 52 which, in turn, has a pivotal attachment 53 to the side of the oral-nasal area shell section 32.
- a telescoping sleeve 54 forms a connection between the plunger 51 and a hollow cylinder 55.
- the cylinder is in turn attached by means of a screw 56 to a bracket 57, the bracket being part of an arm 58 which has a pivotal attachment 59 to the helmet shell 10.
- a spring 60 has one end 61 secured by a spring keeper 62 to the plunger 51 and has its other end 63 secured to a keeper 64 which is anchored to the bracket 57.
- the spring under tension is biased to draw the visor assembly in a direction from left to right as viewed in FIG. 1 so that the seal 40 is drawn into engagement with the face 13 of the wearer.
- a slot 65 in the visor cover 14 within which travels the shank 66 of a knob 67, the shank 66 being riveted at 68 to an adjacent edge 69 of the eye area shell section 31.
- the visor assembly and helmet shell are an integrated structure in that, except for the upward and downward motion about the pivot joints, the visor assembly is firmly held in a fixed relationship with respect to the helmet shell.
- the mask regulator protruding as it does, can be made use of in a sense as a handle when the visor assembly is lifted upwardly or counter clockwise as viewed in FIG. 5.
- the arm 58 is moved from its position of engagement with the actuator button 48 and the air valve 47 then closes off the air line 34 so that no air flows either to the mask regulator 33 or to the seal 40 through the air line 45.
- a sealing face 70 has a seal 40, which is the portion of the seal which actually engages the skin on the face 13 and draws away from the skin an appreciable distance, namely, about half the inflated height of the seal as shown in FIGS. 3 and 4.
- This providesjade quate clearance so that when the mask assembly is lifted progressively from the position of FIG. 1 to the position of FIG. 5, there will be no resistance to its lifting.
- the composite arm 50 then in an over-center position functions to pull the visor assembly toward the visor cover 14 until the eye area shell section is drawn into the pocket 15.
- the mask regulator 33 and visor assembly is swung downwardly or counter-clockwise as viewed in FIG. 5, initially extending the spring 60 as it swings, until the positions of FIG. 1 are then accomplished.
- the arm 58 engages the actuator button 48 thereby to admit automatically air from the air or oxygen line 34 to the mask regulator 33 and thence into the mask.
- air under pressure passes through the air switch 46 and air line 45 into the seal 40 causing it to be inflated to the position of FIG. 3.
- the sealing face 70 will be drawn gently into engagement with the face of the wearer thereby sealing all of that portion of the visor assembly which is defined by the perimeter of the seal as shown in FIGS. 1, 2 and 5.
- FIGS. 8 and 9 there is substituted for the composite arm 50 a compound lever assembly consisting of a lever arm and lever arm 76.
- the lever arm 75 has a bent end section 77 extending at right angle to the lever arm, the end section 77 having a pivot connection 78 to the edge of the oral-nasal area shell section 32.
- the lever arm 76 has a pivot connection 79 to an ear receptacle 80 which is'an integral part of the helmet shell 10.
- An extension 81 of the lever arm 76 protrudes below the ear receptacle and there is a pivot connection 82 between the lever arm 75 and the lever arm 76 at a location not far removed from the pivot connection 79.
- An actuator button 83 on an air valve 84 serves to automatically open the air valve when the extension 81 is in the position shown in FIG. 8 thereby to inflate the seal 40 while the visor assembly is in a position against the face 13 of the wearer.
- an air line 85 extends from the air valve 84 to a side portion ofthe seal 40 as shown in FIG. 8.
- the extension 81 can be employed to help tighten the seal by pushing rearwardly against the extension.
- a locking button 86 of substantially conventional construction, can be turned to tighten engagement of a corner tab 87 of the eye area shell section 31 to the visor cover 14 which is immediately adjacent the end of the slot 65.
- the locking button 86 When the visor assembly is to be lifted clear of the face the locking button 86 is loosened. The visor assembly can then be lifted to the position of FIG. 9. Meanwhile the locking button and its attached shank 88 move to the opposite end of the slot 65 and there again can be tightened so as to be capable of holding the visor assembly in-the elevated position until it is to be released.
- the visor cover 14' is cut away at 90 and the slot 65 dispensed with.
- a lever system of three lever arms is made use of for holding and guiding the visor assembly relative to the helmet shell.
- the lever system consists of a lever arm 91 having a bent section 92 at one end which by means of a pivot connection 93 is attached to a corner 94 of a transparent visor 95.
- a lever arm 96 has a pivot conection 97 to an ear receptacle 98 which is an integral part of the helmet shell 10.
- a pivot connection 99 interconnects the lever arm 91 with the lever arm 96.
- Another lever arm 100 has a pivot connection 101 at one end to the visor 95 about midway between the top and the bottom. At the other end of the lever arm is a pivot connection 102 which connects the lever arm 100 to the lever arm 96 at a location farther away from the pivot connection 97 than the pivot connection 99 previously described. An extension 103 of the lever arm 96 protrudes to a position below the ear receptacle 98.
- An actuator button 104 on an air valve 105 serves a function similar to the previously described actuator button 83 in that in the lowered or operative position of FIG. 10, the actuator button 104 is tripped by the lever arm 100 and causes the air valve to open thereby to inflate a seal 40.
- the lever arm 100 is moved free of the actuator button 104 causing it to shut off the supply of air whereupon to collapse the seal 40'.
- the visor is substantially a single piece transparent visorwhich covers the surface of the wearers face 13 both above and around the eyes and around and below the nose and mouth.
- a single perimetrical seal 40' extending around the edge of the visor 95 forms a seal between the visor and the face of the wearer.
- An air line 106 communicates between the air valve and the seal 40' so that air from an air or oxygen line 34' can be made to supply both air pressure for the seal 40 and air to the mask regulator 33 which communicates with the area beneath the visor 95 in a substantially conventional manner.
- FIGS. 12 and 13 A somewhat different form of helmet and mask integrated structure is shown in FIGS. 12 and 13.
- a visor cover 110 mounted on a helmet shell 111 is provided with a pair of forwardly extending extensions 112 in each of which is a track 113.
- a shoe 114 on either side of an eye area shell section 115 is curved to match the curvature of the track 113 and is adapted to slide with respect to the track as the eye area shell section is moved upwardly from the position in FIG. 12 to the position of FIG. 13.
- a mask section 116 adapted to extend around the nose and mouth of the wearer is integrally attached to the eye area shell section along the line 117.
- the mask regulator is in turn supplied by anjair line 120.
- a pair of lift arms 121 one on each side, one only being shown in FIGS. 12 and 13.
- the lift arm 121 is pivoted beneath a pivot connection 122, the pivot connection being mounted upon and anchored to an ear receptacle 123.
- the ear receptacle 123 is made to act substantially integrally with the helmet shell 110 by employment of a rear strap 124 and an upper strap 125.
- the straps may be either a synthetic plastic resin material or a spring metal material which by flexing in the direction of the flat areas permits the ear receptacles to be easily moved upwardly away from the head and ears of the wearer when the helmet is to be donned and which, upon release, will cause the ear receptacles to be sprung inwardly into contact with the area around the ears of the wearer by virtue of the return acting spring effect of the straps 124 and 125.
- a chin strap 126 helps hold the assembly in place.
- the helmet shell and the visor and mask combination have only very limited movement in any other direction thereby making them a substantially integrated structure, which fits under the visor cover 110 when elevated to the position of FIG. 13, and which snugly seals around the face of the wearer in the position of FIG. 12.
- An integrated helmet and mask structure for the head and face of a wearer comprising a hard helmet shell, a visor assembly including a mask shell and having an articulated attachment on each side to the helmet shell and valve means on the mask shell including a supply of breathing gas for directing such gas to the mask structure, said mask shell having an inner surface adapted to face the face of the wearer, means for moving the mask shell toward and away from a position adjacent the face of a wearer, a hollow sealing tube extending around the edge of the mask shell on the side thereof facing the face, said sealing tube having a fixed sealed attachment to said mask shell, a hose in communication between the valve means and the sealing tube for introducing breathing gas from the supply for the valve means into said tube, said tube having a normally collapsed condition in a direction perpendicular with respect to the inner surface of the mask shell at all locations of attachment, said sealing tube being withdrawn from the adjacent face of the wearer when not subject to gas under pressure and an inflated condition when subject to gas under pressure, the tube when in inflated condition under
- valve means is mounted on the helmet shell and includes a mask supply line and a seal supply line, and a valve actuator in operative relationship with theseal supply line.
- valve actuator has an open condition when out of engagement with a portion of said articulated attachment wherein there is an open connection for gas under mask pressure to said sealing tube, said valve actuator having a closed condition when said articulated attachment is at a position of engagement with said valve actuator wherein there is a closed connection shutting off gas under mask pressure to the sealing tube whereby the tube is deflated.
- sealing tube is an endless tube extending around the perimeter of said mask shell.
- An integrated helmet and mask structure as in claim 4 wherein there is a transverse section of sealing tube extending across the interior of said mask shell at a location intermediate an eye surrounding area and an oral-nasal surrounding area, and wherein said trans verse section is connected to the sealing tube and subject to respectively inflated and collapsed conditions when the remainder of the sealing tube is subject to respectively inflated and collapsed conditions.
- sealing tube has a long dimension substantially perpendicular to said inner surface and a substantially short dimension at right angles thereto, said sealing tube having a normally collapsed condition in the direction of said long dimension to which it returns when not subject to internal air pressure.
Abstract
Description
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US449777A US3910269A (en) | 1972-05-22 | 1974-03-11 | Integrated helmet and mask structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00255838A US3833935A (en) | 1972-05-22 | 1972-05-22 | Integrated helmet and mask structure |
US449777A US3910269A (en) | 1972-05-22 | 1974-03-11 | Integrated helmet and mask structure |
Publications (1)
Publication Number | Publication Date |
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US3910269A true US3910269A (en) | 1975-10-07 |
Family
ID=26944989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US449777A Expired - Lifetime US3910269A (en) | 1972-05-22 | 1974-03-11 | Integrated helmet and mask structure |
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US (1) | US3910269A (en) |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3971368A (en) * | 1975-08-13 | 1976-07-27 | Puritan Equipment, Inc. | Combined oxygen mask and smoke goggle apparatus with automatic flush valve |
US4116237A (en) * | 1977-02-07 | 1978-09-26 | Norman Birch | Emergency breathing apparatus |
US4136403A (en) * | 1976-09-10 | 1979-01-30 | Dragerwerk Aktiengesellschaft | Head guard assembly comprising a protective helmet and a protective breathing mask |
US4172455A (en) * | 1976-12-28 | 1979-10-30 | Intertechnique | Breathing equipment for high altitude flights |
US4174710A (en) * | 1977-04-28 | 1979-11-20 | Auergesellschaft Gmbh | Connection between two different parts of a person's protective covering |
US4227520A (en) * | 1978-02-10 | 1980-10-14 | Canadian Patents & Development Ltd. | Safety helmet for miners |
US4336799A (en) * | 1980-09-03 | 1982-06-29 | Banyaszati Aknamelyito Vallalat | Apparatus for supplying oxygen to a user |
US5078130A (en) * | 1988-07-14 | 1992-01-07 | Gentex Corporation | Personnel headgear enabling free breathing of ambient air or selective breathing from various sources |
US5291880A (en) * | 1990-08-16 | 1994-03-08 | Cairns & Brother Inc. | Protective helmet with protective facepiece connection and adjustment provision |
GB2271285A (en) * | 1992-10-09 | 1994-04-13 | Michael Beard | Automatic tensioner for a face mask harness |
US5355878A (en) * | 1990-06-26 | 1994-10-18 | Cam Lock (Uk) Ltd. | Breathing equipment for aircrew |
US5538001A (en) * | 1992-06-12 | 1996-07-23 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Northern Ireland And Great Britain | Oxygen masks |
FR2732865A1 (en) * | 1995-04-12 | 1996-10-18 | Gentex Corp | INTEGRATED HELMET SYSTEM |
US5687713A (en) * | 1991-11-29 | 1997-11-18 | Bahr; Erik W. | Breathing mask |
US5758639A (en) * | 1992-09-08 | 1998-06-02 | Ikonen; Alpo | Combination of a helmet and a respiratror and a method for using it |
WO1999008556A1 (en) * | 1997-08-15 | 1999-02-25 | Honeywell Inc. | Headgear having an articulated mounting mechanism for a visor |
US20030047185A1 (en) * | 2001-09-13 | 2003-03-13 | Olsen Gregory James | Breathing assistance apparatus |
WO2003005765A3 (en) * | 2001-07-02 | 2003-03-20 | Be Intellectual Pty Inc | Multi-phase headset for pilots |
US20040035428A1 (en) * | 2000-06-14 | 2004-02-26 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
US20040244801A1 (en) * | 2002-09-30 | 2004-12-09 | Hannah Gary R. | Full face flexible oxygen mask for use with flight helmets |
US20050028820A1 (en) * | 2001-11-05 | 2005-02-10 | Smith Nicholas Charles Alan | Nasal masks |
US6997178B1 (en) * | 1998-11-25 | 2006-02-14 | Thomson-Csf Sextant | Oxygen inhaler mask with sound pickup device |
US20060060193A1 (en) * | 2002-09-27 | 2006-03-23 | Richardson Grant S | Respirator |
US20060277665A1 (en) * | 2005-05-27 | 2006-12-14 | Drager Safety Ag & Co. Kgaa | Safety helmet with a breathing mask |
US20070107727A1 (en) * | 2005-11-14 | 2007-05-17 | Brichetto David Mr | Aviator emergency oxygen system |
AU2007202982B2 (en) * | 2001-07-02 | 2009-10-01 | Be Intellectual Property, Inc. | Multi-phase headset for pilots |
US20100229288A1 (en) * | 2009-03-16 | 2010-09-16 | Danny Higgins | Helmet having a guiding mechanism for a compatible visor |
US7934497B1 (en) * | 2001-11-19 | 2011-05-03 | The United States Of America As Represented By The Secretary Of The Army | Modular helmet-mask assembly |
ITUB20153701A1 (en) * | 2015-09-17 | 2017-03-17 | Caberg Spa | JET TYPE HELMET STRUCTURE WITH INCORPORATED VISOR |
US20190008228A1 (en) * | 2016-12-30 | 2019-01-10 | David Francis Ramey | Integrated non-conflicting headgear platform system and method |
US20190350301A1 (en) * | 2017-02-21 | 2019-11-21 | Unit 1 Gear, Inc. | Headphone and helmet assembly |
US11507056B1 (en) * | 2020-04-06 | 2022-11-22 | Lockheed Martin Corporation | System and method for three-dimensional (3D) computer-aided manufacturing (CAM) of an ensemble of pilot equipment and garments |
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US2005072A (en) * | 1934-10-15 | 1935-06-18 | William H Lea | Breathing mask |
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US3149632A (en) * | 1961-02-01 | 1964-09-22 | Goodrich Co B F | Head covering assembly with face and visor seals |
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Cited By (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3971368A (en) * | 1975-08-13 | 1976-07-27 | Puritan Equipment, Inc. | Combined oxygen mask and smoke goggle apparatus with automatic flush valve |
US4136403A (en) * | 1976-09-10 | 1979-01-30 | Dragerwerk Aktiengesellschaft | Head guard assembly comprising a protective helmet and a protective breathing mask |
US4172455A (en) * | 1976-12-28 | 1979-10-30 | Intertechnique | Breathing equipment for high altitude flights |
US4116237A (en) * | 1977-02-07 | 1978-09-26 | Norman Birch | Emergency breathing apparatus |
US4174710A (en) * | 1977-04-28 | 1979-11-20 | Auergesellschaft Gmbh | Connection between two different parts of a person's protective covering |
US4227520A (en) * | 1978-02-10 | 1980-10-14 | Canadian Patents & Development Ltd. | Safety helmet for miners |
US4336799A (en) * | 1980-09-03 | 1982-06-29 | Banyaszati Aknamelyito Vallalat | Apparatus for supplying oxygen to a user |
US5078130A (en) * | 1988-07-14 | 1992-01-07 | Gentex Corporation | Personnel headgear enabling free breathing of ambient air or selective breathing from various sources |
US5355878A (en) * | 1990-06-26 | 1994-10-18 | Cam Lock (Uk) Ltd. | Breathing equipment for aircrew |
US5291880A (en) * | 1990-08-16 | 1994-03-08 | Cairns & Brother Inc. | Protective helmet with protective facepiece connection and adjustment provision |
US5687713A (en) * | 1991-11-29 | 1997-11-18 | Bahr; Erik W. | Breathing mask |
US5538001A (en) * | 1992-06-12 | 1996-07-23 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Northern Ireland And Great Britain | Oxygen masks |
US5758639A (en) * | 1992-09-08 | 1998-06-02 | Ikonen; Alpo | Combination of a helmet and a respiratror and a method for using it |
GB2271285A (en) * | 1992-10-09 | 1994-04-13 | Michael Beard | Automatic tensioner for a face mask harness |
FR2732865A1 (en) * | 1995-04-12 | 1996-10-18 | Gentex Corp | INTEGRATED HELMET SYSTEM |
WO1999008556A1 (en) * | 1997-08-15 | 1999-02-25 | Honeywell Inc. | Headgear having an articulated mounting mechanism for a visor |
US5901369A (en) * | 1997-08-15 | 1999-05-11 | Honeywell Inc. | Headgear having an articulated mounting mechanism for a visor |
US6997178B1 (en) * | 1998-11-25 | 2006-02-14 | Thomson-Csf Sextant | Oxygen inhaler mask with sound pickup device |
US7017576B2 (en) | 2000-06-14 | 2006-03-28 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
US20040035428A1 (en) * | 2000-06-14 | 2004-02-26 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
US6886559B2 (en) | 2001-07-02 | 2005-05-03 | Be Intellectual Property, Inc. | Multi-phase headset for pilots |
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