EP0998959A1 - Dispositif respiratoire d'urgence - Google Patents

Dispositif respiratoire d'urgence Download PDF

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Publication number
EP0998959A1
EP0998959A1 EP99630018A EP99630018A EP0998959A1 EP 0998959 A1 EP0998959 A1 EP 0998959A1 EP 99630018 A EP99630018 A EP 99630018A EP 99630018 A EP99630018 A EP 99630018A EP 0998959 A1 EP0998959 A1 EP 0998959A1
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EP
European Patent Office
Prior art keywords
valve
inhalation
conduit
exhalation
mouthpiece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99630018A
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German (de)
English (en)
Inventor
Neil Beidleman
Jordan Margid
Thomas J. Crowley
Richard Siberell
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.)
Black Diamond Equipment Ltd Inc
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Black Diamond Equipment Ltd Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Black Diamond Equipment Ltd Inc filed Critical Black Diamond Equipment Ltd Inc
Publication of EP0998959A1 publication Critical patent/EP0998959A1/fr
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B33/00—Devices for allowing seemingly-dead persons to escape or draw attention; Breathing apparatus for accidentally buried persons

Definitions

  • the present invention relates to an emergency breathing device for use by persons buried in snow, and more particularly relates to an emergency breathing device that is integrated into an article of outer clothing to be worn by an outdoor sports enthusiast such as a skier, and that has a valve arrangement therein with improved characteristics.
  • some devices include apparatus for chemically generating oxygen.
  • These chemical oxygen generators can have their own drawbacks such as size and weight, and in addition they typically generate an excessive amount of heat in the process of oxygen generation.
  • the design of devices using such oxygen generators have to include the ability to draw heat away from the generator and the user, so that the user is not burned by the excessive heat.
  • a device As an alternative to emergency breathing devices with oxygen canisters and oxygen generators, a device has been developed to allow a user to breathe air directly through snow.
  • This device is disclosed in U.S. Patent Number 5,490,501, issued to Crowley.
  • the device is based on the recognition that snow contains air in quantities of fifty to ninety-five percent by volume.
  • the device includes inhalation and exhalation chambers with outer membranes that are in direct contact with the snow. These membranes are sufficiently porous to allow air to pass through, yet do not allow snow to pass therethrough.
  • the size of the inhalation and exhalation chambers are sufficiently large enough to allow a sufficient amount of air to be drawn into the inhalation and out of the exhalation chamber under normal human respiratory pressures.
  • the Crowley device does, however, have several characteristics that can be greatly improved upon.
  • the device is large and bulky and is not likely to receive the widespread acceptance and use that is desirable among outdoor enthusiasts.
  • the device has mechanical parts therein, including valves, that can become frozen or stuck due to the moisture inherent in exhaled breath in combination with the cold temperatures experienced when buried under snow.
  • the breathing device it is desirable for the breathing device to be convenient yet unobtrusive in use.
  • the present invention is directed to an emergency breathing device for use by a user whose face is buried in snow, the snow having breathable air contained therein.
  • the device includes a mouthpiece, an elongated, extendible conduit pivotably attachable at a first end to the mouthpiece and in fluid communication therewith, the conduit also having a second end, at least one inhalation valve having a first side in fluid communication with a central point of the elongated conduit, the at least one inhalation valve having a second side, the first side and the second side of the inhalation valve having a valve member positioned therebetween to allow fluid to flow from the second side to the first side and to substantially prevent fluid flow from the first side to the second side, and an inhalation chamber attached to the second side of the inhalation valve and in fluid communication therewith.
  • the inhalation chamber includes a frame member, a porous spacer material, and a bag containing the frame member and the spacer material, the bag including at least a portion that is substantially impermeable to snow yet allows the passage of air therethrough between an exterior and an interior of the bag.
  • the device also includes an exhalation valve having a first side attachable to and in fluid communication with the second end of the conduit, the exhalation valve having a second side, the first side and the second side of the exhalation valve having a valve member positioned therebetween to allow fluid to flow from the first side to the second side and to substantially prevent fluid flow from the second side to the first side.
  • the device further includes an exhalation chamber attached to the second side of the exhalation valve, the exhalation chamber including at least a portion that is substantially impermeable to snow yet allows the passage of air therethrough between an interior and an exterior of the exhalation chamber.
  • the frame member may include a frame sheet.
  • the frame sheet may be composed of polyethylene.
  • the porous spacer material may be composed of a three-dimensional geomatrix of monofilaments.
  • the bag may be composed of woven fabric.
  • the device may further include a second inhalation valve having a first side in fluid communication with a central point of the elongated conduit, the second inhalation valve having a second side, the first side and the second side of the second inhalation valve having a valve member positioned therebetween to allow fluid to flow from the second side to the first side and to substantially prevent fluid flow from the first side to the second side, wherein the first and second inhalation valves are spaced apart from each other in the vicinity of the central point of the elongated conduit.
  • the present invention is also directed to an emergency breathing device for use by a user whose face is buried in snow, the snow having breathable air contained therein.
  • the device includes a mouthpiece, a pair of inhalation valves, each having a first side in fluid communication with the mouthpiece, the pair of inhalation valves each having a second side, and an inhalation chamber in fluid communication with the second side of each of the inhalation valves, the inhalation chamber having at least a portion thereof that is substantially impermeable to snow yet allows for the passage of air from an exterior to an interior thereof.
  • the device also includes an exhalation valve having a first side in fluid communication with the mouthpiece, the exhalation valve having a second side and an exhalation chamber in fluid communication with the second side of the exhalation valve, the exhalation chamber having at least a portion thereof that is substantially impermeable to snow yet allows for the passage of air from an interior to an exterior thereof.
  • the pair of inhalation valves and the exhalation valve may each have a cross-sectional area, wherein the cross-sectional area of the inhalation valves together is greater than that of the exhalation valve.
  • the cross-sectional area of the inhalation valves together may be at least twice that of the exhalation valve.
  • the present invention is also directed to the combination of an article of clothing to be worn by a user and an emergency breathing device for use by the user when the face of the user is buried in snow, the snow having breathable air contained therein.
  • the combination includes an article of outer clothing including a pocket therein for containing the emergency breathing device, the pocket having at least a portion thereof that forms an outer surface of the clothing article and is sufficiently permeable to air to allow the emergency breathing device to draw air therethrough.
  • the pocket also includes a releasable fastener located proximate to the upper chest, neck, and shoulder area of the clothing article
  • the combination further includes an emergency breathing device that includes a device body including inhalation and exhalation chambers each having portions thereof that are substantially impermeable to know yet allow the passage of air therethrough.
  • the device also includes an elbowed mouthpiece having a first end for placing in the user's mouth, the mouthpiece also having a second end in fluid communication with the first end and an elongated, extendible conduit pivotably attachable at a first end to the second end of the elbowed mouthpiece and at a second end to the device body.
  • the conduit is selectively in fluid communication with the inhalation and exhalation chambers to allow the user to breathe through the emergency breathing device by breathing through the mouthpiece.
  • the conduit extends out of the pocket of the clothing article to the vicinity of the releasable fastener where the mouthpiece is releasably stowed, and further wherein the fastener can be selectively released from the fastener by the user and the mouthpiece and conduit selectively manipulated to extend the conduit until the mouthpiece is in the vicinity of the user's mouth and to pivot the mouthpiece to a desired angle to be able to comfortably place the mouthpiece in the user's mouth.
  • the pocket may be defined on a front side of the article of clothing.
  • the pocket may communicate with a passageway defined from the front side of the article of clothing to the back side of the article of clothing, wherein the exhalation chamber extends along the passageway.
  • the present invention is also directed to a valve in an emergency breathing apparatus having a conduit therein, the conduit having a longitudinal axis therethrough.
  • the valve includes a fixed valve seat located within the conduit, the valve seat having sealing surfaces thereon that all lie substantially within a first plane and a flexible valve flap mounted in cantilever fashion to the conduit proximate to the valve seat, the flexible valve flap being adapted to flex toward the valve seat and substantially and releasably seal the valve to substantially prevent fluid flow therethrough when the valve is subjected to a fluid pressure differential wherein greater pressure exists in the conduit on the valve flap side of the valve, and the flexible flap being adapted to flex away from the valve seat to allow fluid to flow through the valve seat toward the valve flap when the valve is subjected to a fluid pressure differential wherein greater pressure exists on the valve seat side of the valve.
  • valve flap The mounting of the valve flap in the conduit causes the valve flap to substantially lie in a rest position within a second plane when there is substantially no fluid pressure differential across the valve, and further wherein the first plane and the second plane intersect with each other so that in the rest position of the valve flap, a substantial majority of the valve flap is displaced from the sealing surfaces of the valve seat.
  • the second plane may be perpendicular to the longitudinal axis and the first plane may not be perpendicular to the longitudinal axis.
  • Figure 1 is a perspective view of a user wearing the combination clothing article and emergency breathing device of the present invention, with the mouthpiece of the emergency breathing device in a stowed position.
  • Figure 2 is a view similar to Figure 1 showing the mouthpiece and upper tube of the breathing device extended and in place in the user's mouth.
  • Figure 3 is a perspective view of the article of clothing and breathing device of Figure 1.
  • Figure 4 is a side view of the inside panel of the article of clothing of Figure 1, showing the location of the breathing device within a pocket in the clothing article.
  • Figure 5 is a side view of the breathing device of Figure 1.
  • Figure 6 is a lateral side view of the breathing device of Figure 1, showing the mouthpiece in a swiveled or rotated position.
  • Figure 7 is an exploded view of the breathing device of Figure 1, with the filter bag removed.
  • Figure 8 is an assembled view of the breathing device of Figure 1, with the filter bag removed, and showing a portion of the stuffing material removed to show the frame sheet.
  • Figure 9 is a sectional view taken along line 9-9 of Figure 3, showing air passing into the inhalation chamber and through one of the inhalation valves.
  • Figure 10 is a side view of a portion of the breathing device of Figure 1, showing an upper tube in an extended position.
  • Figure 11 is a close-up view of a front portion of the clothing article showing the location where the upper tube and mouthpiece, shown in phantom, would extend from the article of clothing.
  • Figure 12 is a sectional view taken along line 12-12 of Figure 8, showing the rotatable connection of the mouthpiece to the upper tube.
  • Figure 13 is a perspective view of the neck of the mouthpiece.
  • Figure 14 is a sectional view taken along line 14-14 of Figure 8, showing tie members on the device body holding a portion of the device body together.
  • Figure 15 is a sectional view taken along line 15-15 of Figure 8, showing tie members on the device body holding another portion of the device body together.
  • Figure 16 is a sectional view taken along line 16-16 of Figure 8, showing the interior of the upper inhalation valve.
  • Figure 17 is a sectional view taken along line 17-17 of Figure 16, showing the inhalation valve from the valve flap side thereof.
  • Figure 18 is a sectional view taken along line 18-18 of Figure 16, showing the inhalation valve from the valve seat side thereof.
  • Figure 19 is a sectional view taken along line 19-19 of Figure 16, showing the valve flap in a rest position relative to the valve seat.
  • Figure 20 is a sectional view similar to Figure 19, showing the valve in a closed condition with the valve flap against the valve seat.
  • Figure 21 is a sectional view similar to Figure 19, showing the valve in an open condition with the valve flap flexed away form the valve seat.
  • Figure 22 is a view similar to Figure 19, showing an alternative embodiment of a valve, with a duckbill configuration.
  • the present invention includes an article of outer clothing 20 and an emergency breathing device 22 received within a pocket 24 in the clothing article 20 and extending therefrom, as shown in Figure 1-4.
  • the breathing device 22 includes a device body 26 with a main conduit 30 extending therethrough, an upper tube 32 of the main conduit 30 attached to the device body 26, a mouthpiece 34 attached to the upper tube 32, and an exhaust tube 36 portion on the main conduit 30 attached to an opposite end of the device body 26 from the upper tube 32.
  • the breathing device 22 and clothing article 20 are partially based on the device disclosed in U.S. Patent No. 5,490,501, the contents of which are incorporated herein by reference.
  • the clothing article 20 could be any type of clothing article that may be worn as an outer layer by an outdoor sports enthusiast or other person that has reason to be in areas of possible avalanche danger These types of outer clothing articles could include parkas, powder jackets, fleece jackets, and the like.
  • the clothing article is shown in the figures of this patent application as a vest.
  • the pocket 24 is located on a front side of the clothing article 20.
  • the pocket 24 is constructed to provide a fabric 40 on an outer side thereof that is a webbed or mesh fabric, or other fabric that provides sufficient spacing between the fine portions of the fabric 40 to allow air to easily pass therethrough yet substantially prevent snow from passing therethrough.
  • a zipper 42 located on the inside surface of the front side of the clothing article 20 allows selective access to the pocket so as to be able to remove and replace the breathing device 22 from and to the pocket 24.
  • a passageway 44 in the clothing article 20 leads away from the pocket 24 to the back side 46 of the clothing article 20.
  • the passageway 44 includes a fabric 50 with the same breathable characteristics.
  • a releasable fastener 52 located at an upper end of the pocket on the outer surface of the front side of the article 20 includes a flap 54 with one portion 56 of a hook and loop connector that mates with a fixed portion 58 of a hook and loop connector.
  • the device body 26 ( Figure 5 and 6) of the breathing device 22 is designed and adapted to fit within the pocket 24 in the clothing article 20.
  • the device body 26 includes an inhalation chamber 40 and two inhalation valves 42 and 44, the upper and lower inhalation valves, respectively, as seen in Figure 7.
  • the two inhalation valves 42 and 44 are separated by a middle tube 46 of the main conduit 30.
  • a lower tube 50 of the main conduit 30 extends downward from the lower inhalation valve 44 and connects to an exhalation valve 52
  • the inhalation chamber 60 ( Figures 6-9) includes a frame sheet 80 that provides some shape and rigidity to the device body 26, a stuffing material 82 that is highly porous to provide a thickness to the inhalation chamber 60 without impeding the flow of air therethrough, and a filter bag 84 that surrounds the frame sheet 80 and stuffing material 82.
  • the frame sheet 80 is preferably composed of polyethylene, or other suitable material that is rigid enough to give the chamber 60 a shape but flexible enough to be comfortably worn in the clothing article 20.
  • the frame sheet 80 is perforated so as to not impede the free flow of air through the inhalation chamber 60.
  • the stuffing material 82 is preferably composed of a three-dimensional geomatrix of heavy nylon monofilaments fused at their intersections, such as Enkamat Type 7020 by Akzo Nobel that is 95% open space by volume, and may be provided within the inhalation chamber 60 in a thickness of 1.5 centimeters.
  • the frame sheet 80 is fastened to the stuffing material 82 by a plurality of ties 86, as shown in Figures 7, 8, 14, and 15.
  • the filter bag 84 is preferably composed of woven fabric, or any other suitable material that has the desired characteristics of being substantially impermeable to snow yet allows air to freely pass therethrough under normal respiratory pressures.
  • the fabric may include three separate layers with the two inner layers being fine mosquito netting and the outer layer being slightly more porous.
  • the filter bag 84 contains not only the frame sheet 80 and stuffing material 82, but also the upper and lower inhalation valves 62 and 64, the middle tube 66 therebetween, and the lower tube 70 and exhalation valve 72.
  • the two inhalation valves 62 and 64 are identical, so only the upper inhalation valve 62 will be described in detail.
  • the valve 62 includes a tri-port connector 88 that is a T-shaped, 3-ported conduit.
  • the upper part 90 of the T-shape is connected at one end to the upper tube 32 and at an opposite end to the middle tube 66.
  • the other part 91 of the T-shape connects to a one-way valve 92.
  • the one-way valve 92 includes a valve conduit 94, a valve seat 96, and a valve flap 100
  • the valve flap 100 is mounted on one side thereof along an inner wall of the valve conduit 94
  • the valve flap 100 is preferably composed of silicone, or any other suitable material that provides the desired characteristics of being extremely flexible so as to be able to be forced away from and toward the valve seat 96 as desired under fluid pressure.
  • the valve flap 100 is generally disc-shaped and has an outer diameter just less than the inner diameter of the valve conduit 94.
  • the valve seat 96 ( Figures 16-21) includes flat, sealing portions 102 particularly around the outer periphery of the valve seat 96.
  • the sealing portions 102 also extend across portions of the inner radial area of the valve seat 96 so as to support the valve flap 100 when the valve flap 100 is against the valve seat 96.
  • the valve seat 96 also includes a plurality of apertures 104 therethrough.
  • the valve seat 96 is provided along a plane that is not normal to a longitudinal axis through the valve conduit 94.
  • valve flap 100 By having the valve seat 96 provided at this off angle, and with the valve flap 100 mounted so as to be in a rest position that is generally in a plane that is normal to the longitudinal axis through the valve conduit 94, the valve flap 100 in its rest position is generally displaced from the valve seat 96.
  • valve flap 100 The only portion of the valve flap 100 that is in contact with the valve seat 96 even when the valve flap 100 is in its rest position ( Figure 19), is the portion of the valve flap 100 adjacent to and that is part of the connection of the valve flap 100 to the inner side wall of the valve conduit 94 With the remainder of the valve flap 100 displaced from the valve seat 96, the valve flap 100 will only contact the sealing portions 102 of the valve seat 96, when the valve 92 is closed This reduces the chances of the valve flap 100 freezing to the valve seat 96 due to the moisture in the exhaled breath and the relatively low temperatures in an avalanche.
  • a fluid pressure differential within the valve conduit 94 can cause the valve flap 100 to flex toward and against the valve seat 96 ( Figure 20). This will occur when the fluid pressure is relatively greater on the valve flap 100 side of the valve 92 as compared to the fluid pressure on the valve seat 96 side of the valve 92. Under this fluid pressure condition, the valve 92 will be closed and will substantially prevent fluid from flowing along the valve conduit 94 through the valve 92.
  • valve flap 100 When the fluid pressure differential within the valve conduit 94 causes the fluid pressure to be relatively higher on the valve seat 96 side of the valve 92 than on the valve flap 100 side of the valve 92, the valve flap 100 will flex further away from the valve seat 96 from its rest position and will allow the easy flow of air, or any other fluid, along the valve conduit 94 ( Figure 21). Because the upper inhalation valve 62 is in fluid communication with the mouthpiece 34 through the main conduit 30, it can be appreciated that the valve 92 will open when the user lowers the pressure on the valve flap 100 side of the valve 92 by attempting to inhale. Subsequently, when the user exhales through the mouthpiece 34, the fluid pressure on the valve flap 100 side of the valve 92 will be greater than on the other side and will cause the valve to close during the exhalation process.
  • the lower inhalation valve 64 has an identical structure to the upper inhalation valve 62 and functions identically. By having two inhalation valves, some redundancy is provided for the device 22. It is deemed relatively less important to provide redundancy for the exhalation valve since the user can simply exhale around the mouthpiece if necessary. It is possible that the additional inhalation valve will reduce the respiratory pressure necessary for inhalation as compared to exhalation with the device 22. In addition, in an analogous fashion to a high altitude breathing technique known as "pressure breathing," use of the device 22, with a relatively higher pressure required for exhalation compared to inhalation, may increase oxygen intake.
  • Each of the inhalation valves 62 and 64 provide fluid communication between the main conduit 30 and the interior of the inhalation chamber 60 in the vicinity of the frame sheet 80 and stuffing material 82.
  • each of the valves could be duckbill valves 106 as shown in Figure 22.
  • the valve 106 is retained between a lip 109 on the valve conduit 92 and the lower part 91 of the tri-port connector 88.
  • the duckbill valve 106 includes an upper and a lower flap 107 and 108 that flex to separate when the fluid pressure is greater on the lip 109 side of the valve 106 than the other side.
  • the exhalation valve 72 ( Figure 8) includes a straight conduit 110 that connects at opposite ends to the lower tube 70 and the exhaust tube 36.
  • the exhalation valve 72 also includes a valve flap mounted in a cantilever fashion to an inner side wall of the conduit 110.
  • the valve 72 includes a valve seat that is formed substantially in a plane that is not normal to the longitudinal axis through the conduit 110.
  • the valve seat is located along the main conduit 30 closer to the mouthpiece 34 than is the valve flap.
  • the valve flap is mounted in a fashion so that in a rest position it generally is in a plane normal to the longitudinal axis through the conduit 110.
  • the inhalation valves 62 and 64 are connected to tri-port connectors while the exhalation valve 72 is located in a straight conduit 110, the functionality is analogous.
  • the fluid pressure differential in the conduit 110 causes the valve flap to flex against the valve seat and close the valve 72.
  • the fluid pressure differential in the conduit 110 causes the valve flap to flex away from the valve seat and open the valve 72.
  • the exhalation valve 72 could also be a duckbill valve 106 like the inhalation valves 62 and 64
  • the exhaust tube 36 ( Figures 4-8) can be provided in any of several forms.
  • One form would include a simple flexible tube 120 with a port 122 at an end thereof opposite from the end connected to the exhalation valve 72.
  • Another form could be similar to the first form wherein the flexible tube 120 would have a plurality of perforations 124 therethrough, as shown in Figures 5-8, all along its length so as to pass air to the exterior thereof through the perforations 124 in addition to, or instead of a port.
  • a third alternative would be to have an exhaust tube 36 that was more of an exhalation chamber in a similar design to that of the inhalation chamber 60.
  • Each of the tubes in the main conduit 30, including the upper tube 32, the middle tube 66, the lower tube 70, and the exhaust tube 36 may be composed of a corrugated high density polyethylene (HDPE) tubing material, such as Expandoflex by Cleveland Tubing of Cleveland, Tennessee. This material allows each of the tube portions to be extended in length in any position between a fully retracted position and a full extended position.
  • the tubing may have a 4 to 1 expansion range.
  • the corrugated nature of the tubing also allows the tubing to be curved such as is required for the lower tube 70, may be required for the exhaust tube 36 and the upper tube 32 as well.
  • the upper tube 32 ( Figures 5-8 and 18) may be extendible between a minimum length of six centimeters ( Figure 8) and a maximum length of twenty-four centimeters ( Figure 10) when extended.
  • the upper tube 32 extends out of the pocket 24 in the vicinity of the releasable fastener 52 on the clothing article 20.
  • the upper tube 32 has a collar ( Figure 12) provided at an upper end thereof.
  • the mouthpiece 34 includes a neck 132 ( Figures 12 and 13) that mates with and rotatably attaches to the collar 130 of the upper tube 32. This rotatable connection allows the mouthpiece 34 to be rotated to any desired position relative to the upper tube 32.
  • the mouthpiece 34 includes an elbow 134 formed in a central portion thereof and has an end 136.
  • the mouthpiece is preferably composed of a dual-density plastic and the end 136 is shaped so as to be comfortable for being engaged by the lips and teeth of the user.
  • the user would wear the clothing article 20 with the breathing device 22 inserted therein when they are likely to be in or traveling to conditions of possible avalanche danger (Figure 1).
  • the user can release the releasable fastener 52 and manipulate the mouthpiece 34 and upper tube 32 to extend the upper tube 32 until the mouthpiece 34 is proximate to and/or in the mouth of the user ( Figure 2).
  • the device body 26 could possibly be located other than on the front side of the clothing article 20, but it is preferred that the distance between the mouthpiece 34 and the inhalation valves 62 and 64 not grow too large because of the exhaled air that will remain in that conduit between the mouthpiece 34 and the inhalation valves 62 and 64 and will be part of the next inhaled breath. It is desirable to minimize this volume of exhaled air that is re-inhaled

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP99630018A 1998-11-06 1999-02-12 Dispositif respiratoire d'urgence Withdrawn EP0998959A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18802298A 1998-11-06 1998-11-06
US188022 1998-11-06

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007129014A1 (fr) * 2006-05-05 2007-11-15 No Fuss Limited Appareil respiratoire d'urgence
US7654260B2 (en) 2003-09-12 2010-02-02 Ogilvie Scott A Protective helmet for air extraction from snow
ITTO20120062A1 (it) * 2012-01-25 2013-07-26 Ferrino & C S P A Dispositivo respiratore d'emergenza atto a permettere di respirare al di sotto di una massa nevosa.
WO2017077074A1 (fr) 2015-11-05 2017-05-11 Mamaloha Gmbh Dispositif de protection en cas d'avalanche
DE102016120441A1 (de) 2016-10-26 2018-04-26 Werz Innovations Gmbh Atemhilfe
DE102017103216A1 (de) 2017-02-16 2018-08-16 Hochschule Furtwangen Lawinenatemgerät zur Versorgung einer lawinenverschütteten Person mit Atemluft
WO2018220590A1 (fr) * 2017-06-02 2018-12-06 Julian Stuart Dispositif respiratoire

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062359A (en) * 1976-08-09 1977-12-13 Geaghan Mark E Low temperature breathing apparatus
US4441494A (en) * 1981-03-02 1984-04-10 Montalbano Anthony Cold weather breathing device
US4461292A (en) * 1981-03-02 1984-07-24 Montalbano Anthony Cold weather breathing device with improved conduit and valve arrangement
US4683869A (en) * 1986-05-06 1987-08-04 Wilcox Robert B Breath transfer device
US5063923A (en) * 1990-08-17 1991-11-12 Robert Peroni Cold weather garment with respiration means
US5490501A (en) 1994-05-16 1996-02-13 Crowley; Thomas J. Avalanche victim's air-from-snow breathing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062359A (en) * 1976-08-09 1977-12-13 Geaghan Mark E Low temperature breathing apparatus
US4441494A (en) * 1981-03-02 1984-04-10 Montalbano Anthony Cold weather breathing device
US4461292A (en) * 1981-03-02 1984-07-24 Montalbano Anthony Cold weather breathing device with improved conduit and valve arrangement
US4683869A (en) * 1986-05-06 1987-08-04 Wilcox Robert B Breath transfer device
US5063923A (en) * 1990-08-17 1991-11-12 Robert Peroni Cold weather garment with respiration means
US5490501A (en) 1994-05-16 1996-02-13 Crowley; Thomas J. Avalanche victim's air-from-snow breathing device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8939146B2 (en) 2003-09-12 2015-01-27 Scott A. Ogilvie Protective helmet for air extraction from snow
US7654260B2 (en) 2003-09-12 2010-02-02 Ogilvie Scott A Protective helmet for air extraction from snow
US8196582B2 (en) 2003-09-12 2012-06-12 Ogilvie Scott A Backpack for air extraction from snow
US20090173342A1 (en) * 2006-05-05 2009-07-09 No Fuss Limited Emergency breathing apparatus
WO2007129014A1 (fr) * 2006-05-05 2007-11-15 No Fuss Limited Appareil respiratoire d'urgence
ITTO20120062A1 (it) * 2012-01-25 2013-07-26 Ferrino & C S P A Dispositivo respiratore d'emergenza atto a permettere di respirare al di sotto di una massa nevosa.
EP2620181A1 (fr) * 2012-01-25 2013-07-31 Ferrino & C. S.p.A. Dispositif de respiration d'urgence adapté pour permettre la respiration au-dessous de neige
WO2017077074A1 (fr) 2015-11-05 2017-05-11 Mamaloha Gmbh Dispositif de protection en cas d'avalanche
WO2018077506A1 (fr) 2016-10-26 2018-05-03 Werz Innovations Gmbh Dispositif d'assistance respiratoire
DE102016120441A1 (de) 2016-10-26 2018-04-26 Werz Innovations Gmbh Atemhilfe
US11331521B2 (en) * 2016-10-26 2022-05-17 ADVENATE GmbH Breathing aid
DE102017103216A1 (de) 2017-02-16 2018-08-16 Hochschule Furtwangen Lawinenatemgerät zur Versorgung einer lawinenverschütteten Person mit Atemluft
DE102017103216B4 (de) 2017-02-16 2020-07-09 Hochschule Furtwangen Lawinenatemgerät zur Versorgung einer lawinenverschütteten Person mit Atemluft
WO2018220590A1 (fr) * 2017-06-02 2018-12-06 Julian Stuart Dispositif respiratoire

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