CA2021720A1 - Portable breathing device - Google Patents
Portable breathing deviceInfo
- Publication number
- CA2021720A1 CA2021720A1 CA 2021720 CA2021720A CA2021720A1 CA 2021720 A1 CA2021720 A1 CA 2021720A1 CA 2021720 CA2021720 CA 2021720 CA 2021720 A CA2021720 A CA 2021720A CA 2021720 A1 CA2021720 A1 CA 2021720A1
- Authority
- CA
- Canada
- Prior art keywords
- respiratory
- ambient
- gases
- gas container
- section
- 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.)
- Abandoned
Links
Abstract
ABSTRACT OF THE DISCLOSURE
A portable breathing device is disclosed comprising an upper conduit section having an opening in one end to communicate with at least the users oral passages and a breathing aperture in the other end and a lower flexible and inflatable respiratory gas container section for receiving and containing ambient respiratory gases. The respiratory gas container section has an upper opening communicating with the breathing aperture of the upper section and a lower opening relatively larger than the upper opening for communicating with ambient respiratory gases to thereby permit the user to entrap a volume of ambient respiratory gases within the respiratory gas container section. A seal device is provided for releasably sealing the lower opening of the respiratory gas container section to ensure containment of the entrapped volume of ambient respiratory gases. In the preferred embodiment the upper conduit section is provided with a facial mask adapted to enclose the oral and nasal passages of the user.
A portable breathing device is disclosed comprising an upper conduit section having an opening in one end to communicate with at least the users oral passages and a breathing aperture in the other end and a lower flexible and inflatable respiratory gas container section for receiving and containing ambient respiratory gases. The respiratory gas container section has an upper opening communicating with the breathing aperture of the upper section and a lower opening relatively larger than the upper opening for communicating with ambient respiratory gases to thereby permit the user to entrap a volume of ambient respiratory gases within the respiratory gas container section. A seal device is provided for releasably sealing the lower opening of the respiratory gas container section to ensure containment of the entrapped volume of ambient respiratory gases. In the preferred embodiment the upper conduit section is provided with a facial mask adapted to enclose the oral and nasal passages of the user.
Description
2 ~ 2 ~
PORTABLE BREATHING DEVICE
FIELD OF THE INVENTION
The present invention relates to portable breathing or respiratory devices and more particularly to a portable autonomous breathing device which enables the user to entrap a volume of ambient respirator gas and to breath ~he entrapped air while in an atmosphere of irrespirable or poisonous gases.
BACKGROUND OF THE INVENTION
Devices for the administration of oxygen and other gases to an individual under various circumstances are manifold.
Exemplary of such prior art devices are disclosed in the following U.S. Patents:
968,306 Wunderlich August 23, 1910 151,203,391 O'Donnell October 31, 1916 2,260,701 Boothby et al October 28, 1941 2,329,2~9 Morehouse September 14, 1943 2,336,979 Boothby et al December 14, 1943 2,488,261 Bedini November 15, 1949 202,944,546 Ziherl et al July 12, 1960 3.045,672 Croasdaile July 24, 1962 In still other prior art patents there are disclosed various portable respirators and inhalers. For example, in U.S. Patent 542,057 to Uysdal et al of January 23, 1900 there . . . . , . . . ' ' -'.' 2~2~ 12~3 is disclosed a firemanls portable respirator which i5 particularly directed to an agent disposed within the breathing bag for absorbing carbonic acid exhaled by the userO
In U.S. Patent 1,449,047 to Johnson of March 26, 1923 there is di~closed a pocket inhalation apparatus which comprises a casing which oon-tains a removable miniature high pxessure cylinder bo~tle for containing a gas and communicating with a series of expansion chambers and an outlet for the gas. In U.S. Patent 3,045,671 to Updergraft of July 24, 1962 there is disclosed a portable inhaler which includes a metal cartridge adapted to re~ain a supply of gas under high compression.
While such prior art devices provide improvement in the areas intended, there still exists a great need for a portable breathing device which provides a temporary source of respiratory gas to the user while in an- atmosphere of irrespirable or poisonous gases.
Accordingly, a principle desirable object of the present invention is to provide a novel portable autonomous breathing ~0 device which provides a temporary source of respiratory gas.
Another desirable object of the present invention is to provide a portable breathing device which enables the user to employ ambient on site breathable air or respiratory gases for use in an environment of non-breathable or poisonous gases adjacent the site.
A still further desirable object of the present invention 2~2~72~3 is to provide a tPmporary inhalation device of compact form when not in use and which is inexpensive to manufacture.
A still further desirable object of the presen-t invention is to provide a portable breathing device which provides in combination a structure having an upper breathing section and an associated lower respiratory gas container section which provides means for containing a volume of ambient respirator gases to provide a ~emporary supply of respira~ory yases to the user when in an atmosphere of irrespirable or poisonous gases.
Another desirable object of the present invention is to provide a temporary breathing device of compact ~orm which can be easily stored at the site of need and which provides for a container of respiratory gas at substantially ambient pressure.
Other desirable objects and advantages-of the present invention will in part appear hereinafter and will in part become apparent after consideration of the specification with re~erence to the drawings.
SUMMARY OF THE INVENTION
In accordance with the present invention there is disclosed a portable autonomous breathing device which comprises an upper section having an opening or aperture in one end to communicate with the user's nasal and oral passages and a breathing opening or aperture in the other end 2 ~
associated with a lower f:Lexible and inflatable respiratory gas container sPction for receiving and containing ambient respiratory gases. In a pre~erred embodiment, the respiratory gas container section has an upper opening or aperture communicating wi~h the breathing opening of the upper section and a lower opening or aperture relatively larger than the upper opening for communicatiny with ambient respiratory gases to thereby permit the user to manually entrap a volume of ambient respiratory gases within the respiratory gas conkainer section. The lower opening of the respiratory gas container section is provided wi~h sealing means to ensure containment o~ the entrapped volume of ambient respiratory gases. A
conduit or t~bular means is disposed hetween the upper section and the respiratory gas container section to permit passage of gases therebetween. In one embodiment of the invention a one-way check valve means is disposed in the conduit to permit respiratory gases to flow from the lower gas container section to the upper mask section during inhalation of the user. In another embodiment an additional one~way check valvP means is provided in the conduit to permit exhalation gases to pass from the user to the respiratory gas container.
BRIEF DESCRIPTION OF THE DRAWINGS
For a fuller understanding of the nature and desired objects of the invention, reference should be had to the following detailed description taken in connection with the .
, . . . : : ' ' ' ' ' `'' ' ' ' ' 2 ~
accompanying drawinys wherein li}~e reference characters denote corresponding parts throughout the several views and whereinO
FIG. 1 is a front elevation view of a portable breathing device in accordance with the present invention;
5FIG. 2 is a sectional view along the line 2-2 of FIG. l;
FIG. 3 is a side elevakion view of the portable breathing device of FIG~ 1 in the packed or stowable configuration;
FIG. ~ i9 a fron~ elevation view partly in section of a modified embodiment of the portable breathing device of the 10present invention;
FIG. 5 is a side elevation view of the portable breathing device of FIG. 4 and also showing the device in use;
FIG. ~ is an ele~ation ~iew of a modified embodiment of the invention;
15FIG. 7 is a perspective view of the portable breathing device of FIG. 6 in the inflated mode; and FIG. 8 is a perspective view illustrating the user entrapping respiratory gases within the respiratory gas container of the prasent invention as illustrated in FIG. 1.
Referring now to the drawings and more particularly to FIGS. 1-3 there is illustrat~d generally at 10 a portable breathing device in accordance with the present invention.
The breathing apparatus lQ comprises two main sections, namely 25an upper breathing conduit section 12 and a lower respiratory 2~ 7~
gas container section 14 associated with section 12. Section 12 is preferably tubular in configuration and is open at its upper end to communicate with the oral breathing passayes o~
-the user. The uppsr end of conduit section 12 is preferably provid~d with a flange 16 defining a first or upper aperture or opening 17 as best seen in FIG. 2 to *orm a mouth piece member to enable the user to hold the breathing section securely in position in the user~s mouth. The upper breathing section 12 is preferably formed of a plastic ma~erial such as polyvinyl chloride extruded in tubular form and o~ sufficient thickness to ensure that the tube remains open and is not easily collapsed. In the embodiment illustrated, the upper section 12 is provided with a face mask member 18 which can also be formed of a thin sheet of transparent plastic material such as polyvinyl chloride which can be heat sealed to the breathing section 12 at area 20. The mask member is provided with nose clamp means 22 secured to the inner side of the mask 18 by a suitable attaching means 23 such as adhesives, mating members such as "VELCR0" strips, double backed adhesive tapes and the like well known to those skilled in the art. The mask member 18 is applied to the face so that the mouth piece flange 16 is inserted into the mouth and the nose clamp applied to the user's nose. The mask is held in position (similar to that shown in FIG. 5) by a suitable head strap 24 which may be elastic or plastic straps secured together by means such as ma~ing VELCR0 strips described above.
~ ~ ,, . . ~ , - .. . .
7 ~ !~3 - The lowar respiratory gas container section 14 is pref~rably formed of lightwelght relatively thln, flexible unitary sheet of gas and fluid impervious plastic material such as polyethylene or polyvinyl chloride dsscribed above.
The respiratory gas container 14 is preferably shaped ak its upper end 26 to con~orm to the flanged end 2~ de~ining a second or lower aper~ure or opening 1~ as best seen in FIG.
2 of section 12 and is attached there~o at area 39 o~ section 12 by suitable means such as heat sealing or adhesives to form }0 an air tight seal. The other end of the respiratory container 14 is provided with an opening 32 which is substantially larger than the upper opening 28 and is defined by the edge 34. The plastic material of edge 34 is preferably turned outwardly and sealed such as by heat-sealing along the edge shown by the line 36 to form an internal channel 38 to receive draw string members 40 and 42 which secure, close and seal the opening 32 (as shown by the dotted lines of FIG. 1) to ensure containment of an entrapped volume of ambient respiratory gases as described hereinafter with respect to operation of the portable respirator device of the present invention.
` Mountèd in the breathing section member 12 is a suitable valve means 44 such as a one-way check valve having a disk 4~
which normally seats upon a valve seat 48 and opens into the mouth piece area ,20 and the mask 18 when the user inhales thereby causing the disk 46 to swing open on its hinge 49.
A similar one-way check valve 50 is mounted in the wall of ~2~
section 12 between the mouth piec~ flange ~6 and valve 44 and comprises a disk 5~, seat 54 and hinge 56. The disk 52 normally opens to the ambient atmosphere when pressure caused by the user's exhalation contacts the disk. Similarly the user's exhalation pressure causes disk 46 of valve 44 to close thereby preventing exhaled yases from entering the lower respiratory gas container section 14.
Referr.ing now to FIGS. 4 and 5, there is illustrated a modified embodiment of the portable respiratory device of the present invention shown generally at 58. In this embodiment the face mask 60 is constructed to cover the oral and nasal (oronasal) passages of the user's face as best seen in FIGo 5. Additionally in this embodiment the respiratory device 58 is a unitary structure of the face mask section 60 attached to the upper portion of intermediate conduit member ~4 which contains check valves 44 and 50 and the respiratory gas container 62 which is attached tc the lower portion of the conduit member 64 and is ormed of a plastic makerial such as polyvinyl chloride as described above with respect to FIGS.
l and 2 except that the exhaled gases of the user are directed through one way check valve 50 into the respirator gas container 62 to mix with and dilute the entrapped respiratory gases contained therein. As mentioned, in this embodiment of the invention, the exhalation gases which are conducted into the respiratory gas container through check valve 50 serve to dilute the entrapped respiratory gases and th~reby extends the ' - :`
.
.
~ ~c~r~ ~
useful time of the breathing device for a given volume of entrapped respiratory gases which are inhaled by the user through one way check valve 44~ As illustrated in FIGS. 4 a~d 5 the valves 44 and 50 are mounted adjacent to each other in the same plane within the conduit section 64.
Referring now to FIGS. 6 and 7, there is illustrated a modified embodiment of the invention. As shown, the portable breathing device comprises a respiratory gas container section 66 having an opening 68 at one end and which serves as an inflatable gas reservoir. The respiratory gas container is pre~erably formed of fluid impervious plastic material as described hereinbefore. The edge 70 of the opening 68 is formed into a channel 72 to receive securing means such as draw string members 74 and 76 which releasably close, secure, and seal the opening 68 about the breathing conduit member 78 after the respiratory container section 66 has been filled with respiratory gases. The breathing conduit member 78 i5 attached to a portion of the inner surface 80 of gas container 66 by suitable attaching means 82 and 84 which may~ for example, be mating ~tVELCRO" strips or suitable adhesive tapes and the like as is well known. The breathing conduit 78 is preferably formed of a tubular plastic material such as described with respect to breathing section 12 of FIG. 1 and is provided with a one-way normally closed check valve 86 which is identical in construction to valve 44 of FIGS. 1 and 2. rrhe upper end of the breathing conduit 78 is prov~ded with .
2 ~ 2 ~ r3;~
a face mask 88 having a head strap 9o. The valve ~6 remains open so long as the wearer of the mask is inhaling and taking in the gaseous supply from respiratory container section 66.
However, when the wearer exhales, valve 86 is closed by the exhalation pressure, and the exhaled gases exit through one-way check valve 92 which is normally closed but is opened by the exhalation pressure. The valve 92 is identical in construction to valve 50 of ~IG. 1. FIG. 7 shows the portable respiratory device of FIG. 6 in the inflated ready to use mode.
When not in use the breathing device of the present invention can, for example, when in the folded f~rm illustrated in FIG. 3, be stored in each office o~ an office building in sufficient quantities to serve the occupants of each office. To use the portable breathing device, in the event of an emergency such as fire and wher~ it is necessary to cross an area of irrespirable or poisonous gases in order to escape to a safe area, the user unfolds the portable breathing device and with the end 32 of the respirator gas container 10 (FIG. 1) open fills the container with ambient breathable respiratory gases by suitable arm movement of the user 9~ to inflate the respiratory container as shown in FIG.
8. The opening 32 is then sealed by means of sealing members 40 and 42 to thereby ensure containment of the entrapped gases. The face mask 18 and mouth piece 16 are then positioned for use whereby the user has a supply of ' ' , , ~2~
breathable respiratory yases while passing safely through the area of harmful ambient gases and smoke.
Th~ portable respiratory device illustrated ln FIGS. 6 and 7 is employed in the same manner as described above with respect to the embodiment set forth in FIGSu 1-3.
one feature of the present invention is that the complete portable respiratory device of the present invention may be folded and stored in a small area or packaged in a small sized container such as a handbag or desk drawer.
An important feature of the portable breathing apparatus of the present invention is that the gas pressure within the filled respiratory gas container is generally at a gas pressure which is equal to or slightly greater than the ambient atmospheric pressure and therefore is self-regulating i.e. the respiratory gases are withdrawn by inhalation i.e.
"on demand" by the user rather than the ~ontinuous flow involved with high pressure containexs and associated valves to control the flow as employed by the prior art devices.
Additionally, since the respiratory gas container while in use is always at ambient atmospheric pressure, the possibility of exchange between ambient gases and respiratory gases contained within the gas container is substantially completely eliminated. The portable breathing apparatus of the present invention may be quickly and easily refilled from an ambient source o~ respiratory gases to provide an extended supply of respiratory gases.
. .... .
~3~1~7~
It is to be understood that modifications of the illustrated embodiments of the presenk invention can be made within the scope of the invention. For example, the embodiments of FIGS. 1 and 7 can be employed without the facial masks 18 and 8G. In such a modification the conduit sections 12 and 78 are provided with only the valve means 44 and 86 respectively to thereby permit the user to orally inhale respiratory gases ~rom the re~piratory gas container and exhale to the ambient area through the users nasal passages. Additionally, in a modified embodiment (not shown), the face mask can be adapted to cover the users eyes as well as the oral and nasal passages.
It has been determined that a portable breathing device in accordance with the present invention having a 30 gallon respiratory container will provide a source of respiratory gases for between about 3 to 5 minutes.
It is believed apparent that the portable breathing device of the present invention provides a temporary, reusable autonomous breathing device which is particularly suitable for ~0 emergency situations and which can be easily stored in various locations ready for use with a minimum of preparation, and which is highly economical to produce.
While the invention has been described with respect to preferred embodiments, it will be apparent to those skilled 2~ in the art that changes and modifications may be made withoutdeparting from the scope of the invention herein involYed in .
its broader aspects. Accordingly, it is intended that all matter contained in the above description, or shown in the accompanying drawing shall bP interpreted as illustrativs and not in a limiting sensa.
- :
PORTABLE BREATHING DEVICE
FIELD OF THE INVENTION
The present invention relates to portable breathing or respiratory devices and more particularly to a portable autonomous breathing device which enables the user to entrap a volume of ambient respirator gas and to breath ~he entrapped air while in an atmosphere of irrespirable or poisonous gases.
BACKGROUND OF THE INVENTION
Devices for the administration of oxygen and other gases to an individual under various circumstances are manifold.
Exemplary of such prior art devices are disclosed in the following U.S. Patents:
968,306 Wunderlich August 23, 1910 151,203,391 O'Donnell October 31, 1916 2,260,701 Boothby et al October 28, 1941 2,329,2~9 Morehouse September 14, 1943 2,336,979 Boothby et al December 14, 1943 2,488,261 Bedini November 15, 1949 202,944,546 Ziherl et al July 12, 1960 3.045,672 Croasdaile July 24, 1962 In still other prior art patents there are disclosed various portable respirators and inhalers. For example, in U.S. Patent 542,057 to Uysdal et al of January 23, 1900 there . . . . , . . . ' ' -'.' 2~2~ 12~3 is disclosed a firemanls portable respirator which i5 particularly directed to an agent disposed within the breathing bag for absorbing carbonic acid exhaled by the userO
In U.S. Patent 1,449,047 to Johnson of March 26, 1923 there is di~closed a pocket inhalation apparatus which comprises a casing which oon-tains a removable miniature high pxessure cylinder bo~tle for containing a gas and communicating with a series of expansion chambers and an outlet for the gas. In U.S. Patent 3,045,671 to Updergraft of July 24, 1962 there is disclosed a portable inhaler which includes a metal cartridge adapted to re~ain a supply of gas under high compression.
While such prior art devices provide improvement in the areas intended, there still exists a great need for a portable breathing device which provides a temporary source of respiratory gas to the user while in an- atmosphere of irrespirable or poisonous gases.
Accordingly, a principle desirable object of the present invention is to provide a novel portable autonomous breathing ~0 device which provides a temporary source of respiratory gas.
Another desirable object of the present invention is to provide a portable breathing device which enables the user to employ ambient on site breathable air or respiratory gases for use in an environment of non-breathable or poisonous gases adjacent the site.
A still further desirable object of the present invention 2~2~72~3 is to provide a tPmporary inhalation device of compact form when not in use and which is inexpensive to manufacture.
A still further desirable object of the presen-t invention is to provide a portable breathing device which provides in combination a structure having an upper breathing section and an associated lower respiratory gas container section which provides means for containing a volume of ambient respirator gases to provide a ~emporary supply of respira~ory yases to the user when in an atmosphere of irrespirable or poisonous gases.
Another desirable object of the present invention is to provide a temporary breathing device of compact ~orm which can be easily stored at the site of need and which provides for a container of respiratory gas at substantially ambient pressure.
Other desirable objects and advantages-of the present invention will in part appear hereinafter and will in part become apparent after consideration of the specification with re~erence to the drawings.
SUMMARY OF THE INVENTION
In accordance with the present invention there is disclosed a portable autonomous breathing device which comprises an upper section having an opening or aperture in one end to communicate with the user's nasal and oral passages and a breathing opening or aperture in the other end 2 ~
associated with a lower f:Lexible and inflatable respiratory gas container sPction for receiving and containing ambient respiratory gases. In a pre~erred embodiment, the respiratory gas container section has an upper opening or aperture communicating wi~h the breathing opening of the upper section and a lower opening or aperture relatively larger than the upper opening for communicatiny with ambient respiratory gases to thereby permit the user to manually entrap a volume of ambient respiratory gases within the respiratory gas conkainer section. The lower opening of the respiratory gas container section is provided wi~h sealing means to ensure containment o~ the entrapped volume of ambient respiratory gases. A
conduit or t~bular means is disposed hetween the upper section and the respiratory gas container section to permit passage of gases therebetween. In one embodiment of the invention a one-way check valve means is disposed in the conduit to permit respiratory gases to flow from the lower gas container section to the upper mask section during inhalation of the user. In another embodiment an additional one~way check valvP means is provided in the conduit to permit exhalation gases to pass from the user to the respiratory gas container.
BRIEF DESCRIPTION OF THE DRAWINGS
For a fuller understanding of the nature and desired objects of the invention, reference should be had to the following detailed description taken in connection with the .
, . . . : : ' ' ' ' ' `'' ' ' ' ' 2 ~
accompanying drawinys wherein li}~e reference characters denote corresponding parts throughout the several views and whereinO
FIG. 1 is a front elevation view of a portable breathing device in accordance with the present invention;
5FIG. 2 is a sectional view along the line 2-2 of FIG. l;
FIG. 3 is a side elevakion view of the portable breathing device of FIG~ 1 in the packed or stowable configuration;
FIG. ~ i9 a fron~ elevation view partly in section of a modified embodiment of the portable breathing device of the 10present invention;
FIG. 5 is a side elevation view of the portable breathing device of FIG. 4 and also showing the device in use;
FIG. ~ is an ele~ation ~iew of a modified embodiment of the invention;
15FIG. 7 is a perspective view of the portable breathing device of FIG. 6 in the inflated mode; and FIG. 8 is a perspective view illustrating the user entrapping respiratory gases within the respiratory gas container of the prasent invention as illustrated in FIG. 1.
Referring now to the drawings and more particularly to FIGS. 1-3 there is illustrat~d generally at 10 a portable breathing device in accordance with the present invention.
The breathing apparatus lQ comprises two main sections, namely 25an upper breathing conduit section 12 and a lower respiratory 2~ 7~
gas container section 14 associated with section 12. Section 12 is preferably tubular in configuration and is open at its upper end to communicate with the oral breathing passayes o~
-the user. The uppsr end of conduit section 12 is preferably provid~d with a flange 16 defining a first or upper aperture or opening 17 as best seen in FIG. 2 to *orm a mouth piece member to enable the user to hold the breathing section securely in position in the user~s mouth. The upper breathing section 12 is preferably formed of a plastic ma~erial such as polyvinyl chloride extruded in tubular form and o~ sufficient thickness to ensure that the tube remains open and is not easily collapsed. In the embodiment illustrated, the upper section 12 is provided with a face mask member 18 which can also be formed of a thin sheet of transparent plastic material such as polyvinyl chloride which can be heat sealed to the breathing section 12 at area 20. The mask member is provided with nose clamp means 22 secured to the inner side of the mask 18 by a suitable attaching means 23 such as adhesives, mating members such as "VELCR0" strips, double backed adhesive tapes and the like well known to those skilled in the art. The mask member 18 is applied to the face so that the mouth piece flange 16 is inserted into the mouth and the nose clamp applied to the user's nose. The mask is held in position (similar to that shown in FIG. 5) by a suitable head strap 24 which may be elastic or plastic straps secured together by means such as ma~ing VELCR0 strips described above.
~ ~ ,, . . ~ , - .. . .
7 ~ !~3 - The lowar respiratory gas container section 14 is pref~rably formed of lightwelght relatively thln, flexible unitary sheet of gas and fluid impervious plastic material such as polyethylene or polyvinyl chloride dsscribed above.
The respiratory gas container 14 is preferably shaped ak its upper end 26 to con~orm to the flanged end 2~ de~ining a second or lower aper~ure or opening 1~ as best seen in FIG.
2 of section 12 and is attached there~o at area 39 o~ section 12 by suitable means such as heat sealing or adhesives to form }0 an air tight seal. The other end of the respiratory container 14 is provided with an opening 32 which is substantially larger than the upper opening 28 and is defined by the edge 34. The plastic material of edge 34 is preferably turned outwardly and sealed such as by heat-sealing along the edge shown by the line 36 to form an internal channel 38 to receive draw string members 40 and 42 which secure, close and seal the opening 32 (as shown by the dotted lines of FIG. 1) to ensure containment of an entrapped volume of ambient respiratory gases as described hereinafter with respect to operation of the portable respirator device of the present invention.
` Mountèd in the breathing section member 12 is a suitable valve means 44 such as a one-way check valve having a disk 4~
which normally seats upon a valve seat 48 and opens into the mouth piece area ,20 and the mask 18 when the user inhales thereby causing the disk 46 to swing open on its hinge 49.
A similar one-way check valve 50 is mounted in the wall of ~2~
section 12 between the mouth piec~ flange ~6 and valve 44 and comprises a disk 5~, seat 54 and hinge 56. The disk 52 normally opens to the ambient atmosphere when pressure caused by the user's exhalation contacts the disk. Similarly the user's exhalation pressure causes disk 46 of valve 44 to close thereby preventing exhaled yases from entering the lower respiratory gas container section 14.
Referr.ing now to FIGS. 4 and 5, there is illustrated a modified embodiment of the portable respiratory device of the present invention shown generally at 58. In this embodiment the face mask 60 is constructed to cover the oral and nasal (oronasal) passages of the user's face as best seen in FIGo 5. Additionally in this embodiment the respiratory device 58 is a unitary structure of the face mask section 60 attached to the upper portion of intermediate conduit member ~4 which contains check valves 44 and 50 and the respiratory gas container 62 which is attached tc the lower portion of the conduit member 64 and is ormed of a plastic makerial such as polyvinyl chloride as described above with respect to FIGS.
l and 2 except that the exhaled gases of the user are directed through one way check valve 50 into the respirator gas container 62 to mix with and dilute the entrapped respiratory gases contained therein. As mentioned, in this embodiment of the invention, the exhalation gases which are conducted into the respiratory gas container through check valve 50 serve to dilute the entrapped respiratory gases and th~reby extends the ' - :`
.
.
~ ~c~r~ ~
useful time of the breathing device for a given volume of entrapped respiratory gases which are inhaled by the user through one way check valve 44~ As illustrated in FIGS. 4 a~d 5 the valves 44 and 50 are mounted adjacent to each other in the same plane within the conduit section 64.
Referring now to FIGS. 6 and 7, there is illustrated a modified embodiment of the invention. As shown, the portable breathing device comprises a respiratory gas container section 66 having an opening 68 at one end and which serves as an inflatable gas reservoir. The respiratory gas container is pre~erably formed of fluid impervious plastic material as described hereinbefore. The edge 70 of the opening 68 is formed into a channel 72 to receive securing means such as draw string members 74 and 76 which releasably close, secure, and seal the opening 68 about the breathing conduit member 78 after the respiratory container section 66 has been filled with respiratory gases. The breathing conduit member 78 i5 attached to a portion of the inner surface 80 of gas container 66 by suitable attaching means 82 and 84 which may~ for example, be mating ~tVELCRO" strips or suitable adhesive tapes and the like as is well known. The breathing conduit 78 is preferably formed of a tubular plastic material such as described with respect to breathing section 12 of FIG. 1 and is provided with a one-way normally closed check valve 86 which is identical in construction to valve 44 of FIGS. 1 and 2. rrhe upper end of the breathing conduit 78 is prov~ded with .
2 ~ 2 ~ r3;~
a face mask 88 having a head strap 9o. The valve ~6 remains open so long as the wearer of the mask is inhaling and taking in the gaseous supply from respiratory container section 66.
However, when the wearer exhales, valve 86 is closed by the exhalation pressure, and the exhaled gases exit through one-way check valve 92 which is normally closed but is opened by the exhalation pressure. The valve 92 is identical in construction to valve 50 of ~IG. 1. FIG. 7 shows the portable respiratory device of FIG. 6 in the inflated ready to use mode.
When not in use the breathing device of the present invention can, for example, when in the folded f~rm illustrated in FIG. 3, be stored in each office o~ an office building in sufficient quantities to serve the occupants of each office. To use the portable breathing device, in the event of an emergency such as fire and wher~ it is necessary to cross an area of irrespirable or poisonous gases in order to escape to a safe area, the user unfolds the portable breathing device and with the end 32 of the respirator gas container 10 (FIG. 1) open fills the container with ambient breathable respiratory gases by suitable arm movement of the user 9~ to inflate the respiratory container as shown in FIG.
8. The opening 32 is then sealed by means of sealing members 40 and 42 to thereby ensure containment of the entrapped gases. The face mask 18 and mouth piece 16 are then positioned for use whereby the user has a supply of ' ' , , ~2~
breathable respiratory yases while passing safely through the area of harmful ambient gases and smoke.
Th~ portable respiratory device illustrated ln FIGS. 6 and 7 is employed in the same manner as described above with respect to the embodiment set forth in FIGSu 1-3.
one feature of the present invention is that the complete portable respiratory device of the present invention may be folded and stored in a small area or packaged in a small sized container such as a handbag or desk drawer.
An important feature of the portable breathing apparatus of the present invention is that the gas pressure within the filled respiratory gas container is generally at a gas pressure which is equal to or slightly greater than the ambient atmospheric pressure and therefore is self-regulating i.e. the respiratory gases are withdrawn by inhalation i.e.
"on demand" by the user rather than the ~ontinuous flow involved with high pressure containexs and associated valves to control the flow as employed by the prior art devices.
Additionally, since the respiratory gas container while in use is always at ambient atmospheric pressure, the possibility of exchange between ambient gases and respiratory gases contained within the gas container is substantially completely eliminated. The portable breathing apparatus of the present invention may be quickly and easily refilled from an ambient source o~ respiratory gases to provide an extended supply of respiratory gases.
. .... .
~3~1~7~
It is to be understood that modifications of the illustrated embodiments of the presenk invention can be made within the scope of the invention. For example, the embodiments of FIGS. 1 and 7 can be employed without the facial masks 18 and 8G. In such a modification the conduit sections 12 and 78 are provided with only the valve means 44 and 86 respectively to thereby permit the user to orally inhale respiratory gases ~rom the re~piratory gas container and exhale to the ambient area through the users nasal passages. Additionally, in a modified embodiment (not shown), the face mask can be adapted to cover the users eyes as well as the oral and nasal passages.
It has been determined that a portable breathing device in accordance with the present invention having a 30 gallon respiratory container will provide a source of respiratory gases for between about 3 to 5 minutes.
It is believed apparent that the portable breathing device of the present invention provides a temporary, reusable autonomous breathing device which is particularly suitable for ~0 emergency situations and which can be easily stored in various locations ready for use with a minimum of preparation, and which is highly economical to produce.
While the invention has been described with respect to preferred embodiments, it will be apparent to those skilled 2~ in the art that changes and modifications may be made withoutdeparting from the scope of the invention herein involYed in .
its broader aspects. Accordingly, it is intended that all matter contained in the above description, or shown in the accompanying drawing shall bP interpreted as illustrativs and not in a limiting sensa.
- :
Claims (8)
1. A portable autonomous breathing device comprising:
an upper respiratory gas conduit section having a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases;
a facial mask member attached about the first aperture of said conduit section;
a lower inflatable respiratory gas container section for receiving and containing ambient respiratory gases at ambient atmospheric pressure;
said respiratory gas container section having an upper opening luidically communicating with the second aperture of said upper conduit section and a continuous flexible edge portion defining a lower opening relatively larger than said upper opening for communicating with ambient respiratory gases thereby permitting the user to manually entrap a volume of ambient respiratory gases within said respiratory gas container section at ambient atmospheric pressure;
means for releasably sealing at ambient atmospheric pressure said lower opening of said respiratory test container section to contain the manually entrapped volume of ambient respiratory gases at ambient atmospheric pressure;
a first valve means mounted within the conduit section between the first and second apertures permitting inhalation of respiratory gases therethrough; and a second valve means mounted in the wall of the conduit section between the first valve means and the first aperture of the conduit section permitting exhalation gases to pass therethrough to the ambient atmosphere and resistant to inhalation of ambient atmosphere therethrough.
an upper respiratory gas conduit section having a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases;
a facial mask member attached about the first aperture of said conduit section;
a lower inflatable respiratory gas container section for receiving and containing ambient respiratory gases at ambient atmospheric pressure;
said respiratory gas container section having an upper opening luidically communicating with the second aperture of said upper conduit section and a continuous flexible edge portion defining a lower opening relatively larger than said upper opening for communicating with ambient respiratory gases thereby permitting the user to manually entrap a volume of ambient respiratory gases within said respiratory gas container section at ambient atmospheric pressure;
means for releasably sealing at ambient atmospheric pressure said lower opening of said respiratory test container section to contain the manually entrapped volume of ambient respiratory gases at ambient atmospheric pressure;
a first valve means mounted within the conduit section between the first and second apertures permitting inhalation of respiratory gases therethrough; and a second valve means mounted in the wall of the conduit section between the first valve means and the first aperture of the conduit section permitting exhalation gases to pass therethrough to the ambient atmosphere and resistant to inhalation of ambient atmosphere therethrough.
2. The portable autonomous breathing device of Claim 1 wherein said mask member and lower respiratory gas container section are formed of a flexible material whereby said breathing device is foldable for storage at the site of use.
3. A portable autonomous breathing device adapted for entrapping ambient respiratory gases for a user comprising:
a gas impervious inflatable respiratory gas container member having a continuous flexible edge portion defining an upper opening providing access to the inner surface of said container member thereby permitting the user to manually entrap a volume of ambient respiratory gases within said gas container member at ambient atmospheric pressure;
a conduit member having a first aperture at the upper end and a second aperture at the lower end;
a facial mask member attached about the first aperture of the upper end of the conduit member and adapted to enclose the oral and nasal passages of the user;
means for releasably sealing the continuous flexible edge portion of said upper gas container member opening about the second aperture of the lower end of said conduit member to contain the manually entrapped volume of ambient respiratory gases within the respiratory gas container at ambient atmospheric pressure;
a first valve means mounted within the conduit member between the first and second apertures permitting inhalation of espiratory gases therethrough and resistant to passage of exhalation gases therethrough; and a second valve means mounted in the wall of the conduit member between the first valve means and the first aperture of the conduit member permitting exhalation gases to pass therethrough to the ambient atmosphere and resistant to inhalation of ambient atmosphere therethrough.
a gas impervious inflatable respiratory gas container member having a continuous flexible edge portion defining an upper opening providing access to the inner surface of said container member thereby permitting the user to manually entrap a volume of ambient respiratory gases within said gas container member at ambient atmospheric pressure;
a conduit member having a first aperture at the upper end and a second aperture at the lower end;
a facial mask member attached about the first aperture of the upper end of the conduit member and adapted to enclose the oral and nasal passages of the user;
means for releasably sealing the continuous flexible edge portion of said upper gas container member opening about the second aperture of the lower end of said conduit member to contain the manually entrapped volume of ambient respiratory gases within the respiratory gas container at ambient atmospheric pressure;
a first valve means mounted within the conduit member between the first and second apertures permitting inhalation of espiratory gases therethrough and resistant to passage of exhalation gases therethrough; and a second valve means mounted in the wall of the conduit member between the first valve means and the first aperture of the conduit member permitting exhalation gases to pass therethrough to the ambient atmosphere and resistant to inhalation of ambient atmosphere therethrough.
4. The portable breathing device of Claim 3 wherein said facial mask member and respiratory gas container member are formed of a flexible material whereby said breathing device is foldable for storage at the site of use.
5. A portable breathing device adapted for entrapping ambient respiratory gases at ambient atmospheric pressure for a user comprising:
a gas impervious inflatable respiratory gas container having a continuous flexible edge portion defining an upper opening providing access to the inner surface of said container thereby permitting the user to manually entrap a volume of ambient respiratory gases within said gas container at ambient atmospheric pressure;
a conduit member attached to the inner surface of said respiratory gas container adjacent said upper opening thereof;
said conduit member having a first aperture external to said respiratory gas container and a second aperture disposed within said gas container;
means for releasably sealing the continuous flexible edge portion of the respiratory gas container opening about said conduit member to contain the manually entrapped volume of ambient respiratory gases at ambient atmospheric pressure; and valve means mounted in said conduit member to permit inhalation of entrapped respiratory gases from said respiratory gas container.
a gas impervious inflatable respiratory gas container having a continuous flexible edge portion defining an upper opening providing access to the inner surface of said container thereby permitting the user to manually entrap a volume of ambient respiratory gases within said gas container at ambient atmospheric pressure;
a conduit member attached to the inner surface of said respiratory gas container adjacent said upper opening thereof;
said conduit member having a first aperture external to said respiratory gas container and a second aperture disposed within said gas container;
means for releasably sealing the continuous flexible edge portion of the respiratory gas container opening about said conduit member to contain the manually entrapped volume of ambient respiratory gases at ambient atmospheric pressure; and valve means mounted in said conduit member to permit inhalation of entrapped respiratory gases from said respiratory gas container.
6. A portable autonomous breathing device comprising:
an upper respiratory gas conduit section having a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases;
a lower flexible and inflatable respiratory gas container section for receiving and containing ambient respiratory gases at ambient atmospheric pressure;
said respiratory gas container section having an upper opening fluidically communicating with the second aperture of said upper conduit section and a flexible edge defining a lower opening relatively larger than said upper opening for communicating with ambient respiratory gases whereby the respiratory container section may be extended under ambient atmospheric pressure to permit the user to manually entrap a volume of ambient respiratory gases within said respiratory gas container section under ambient atmospheric pressure; and means for releasably sealing at ambient atmospheric pressure the lower opening of the respiratory gas container section to prevent the manually entrapped volume of ambient gases at ambient atmospheric pressure from passing outwardly through said lower opening, and prevent ambient gases from passing inwardly through said lower opening.
an upper respiratory gas conduit section having a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases;
a lower flexible and inflatable respiratory gas container section for receiving and containing ambient respiratory gases at ambient atmospheric pressure;
said respiratory gas container section having an upper opening fluidically communicating with the second aperture of said upper conduit section and a flexible edge defining a lower opening relatively larger than said upper opening for communicating with ambient respiratory gases whereby the respiratory container section may be extended under ambient atmospheric pressure to permit the user to manually entrap a volume of ambient respiratory gases within said respiratory gas container section under ambient atmospheric pressure; and means for releasably sealing at ambient atmospheric pressure the lower opening of the respiratory gas container section to prevent the manually entrapped volume of ambient gases at ambient atmospheric pressure from passing outwardly through said lower opening, and prevent ambient gases from passing inwardly through said lower opening.
7. The portable autonomous breathing device of Claim 6 further comprising valve means disposed in said conduit section to control passage of gases therethrough.
8. A portable autonomous breathing device comprising:
an upper respiratory gas conduit section haivng a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases;
a facial mask member attached about the first aperture of said conduit section;
a lower inflatable respiratory gas container section for receiving and containing ambient respiratory gases at ambient atmospheric pressure;
said respiratory gas container section having an upper opening fluidically communicating with the second aperture of said upper conduit section and a continuous flexible edge portion defining a lower opening relatively larger than said upper opening for communicating with ambient respiratory gases thereby permitting the user to manually entrap a volume of ambient respiratory gases within said respiratory gas container section at ambient atmospheric pressure;
means for releasably sealing at ambient atmospheric pressure said lower opening of said respiratory gas container section to contain the manually entrapped volume of ambient respiratory gases at ambient atmospheric pressure; and first and second valve means mounted adjacent to each other in the same plane within said upper respiratory gas conduit section;
said first valve means permitting inhalation of respiratory gases therethrough from said respiratory gas container and inhibiting passage of exhalation gases therethrough;
said second valve means permitting exhalation gases to pass therethrough to said respiratory gas container to thereby dilute the contained respiratory gases and thereby extend the useful breathing time of said device for a given volume of entrapped respiratory gases.
an upper respiratory gas conduit section haivng a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases;
a facial mask member attached about the first aperture of said conduit section;
a lower inflatable respiratory gas container section for receiving and containing ambient respiratory gases at ambient atmospheric pressure;
said respiratory gas container section having an upper opening fluidically communicating with the second aperture of said upper conduit section and a continuous flexible edge portion defining a lower opening relatively larger than said upper opening for communicating with ambient respiratory gases thereby permitting the user to manually entrap a volume of ambient respiratory gases within said respiratory gas container section at ambient atmospheric pressure;
means for releasably sealing at ambient atmospheric pressure said lower opening of said respiratory gas container section to contain the manually entrapped volume of ambient respiratory gases at ambient atmospheric pressure; and first and second valve means mounted adjacent to each other in the same plane within said upper respiratory gas conduit section;
said first valve means permitting inhalation of respiratory gases therethrough from said respiratory gas container and inhibiting passage of exhalation gases therethrough;
said second valve means permitting exhalation gases to pass therethrough to said respiratory gas container to thereby dilute the contained respiratory gases and thereby extend the useful breathing time of said device for a given volume of entrapped respiratory gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2021720 CA2021720A1 (en) | 1990-07-20 | 1990-07-20 | Portable breathing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2021720 CA2021720A1 (en) | 1990-07-20 | 1990-07-20 | Portable breathing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2021720A1 true CA2021720A1 (en) | 1992-01-21 |
Family
ID=4145543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2021720 Abandoned CA2021720A1 (en) | 1990-07-20 | 1990-07-20 | Portable breathing device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2021720A1 (en) |
-
1990
- 1990-07-20 CA CA 2021720 patent/CA2021720A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |