US4253454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respirator package for carrying on a person
Assignee: Draegerwerk AG and Co KGaA
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Filing: 1979-05-23
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Granted: 1981-03-03
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Expires: 1999-05-23
Abstract
Abstract A respirator package for carrying on a person includes a tubular frame which forms a container for a high pressure gas such as oxygen. A respiratory air circulating system is adapted to be mounted on the frame and connected to the high pressure gas therein for the selected circulation of the gas and respiratory air to and from the wearer and also advantageously includes means for regenerating the breathing air and supplementing it with the gas such as oxygen. The high pressure gas container comprises a frame made up of successive windings of a tube to form a closed container having a connecting valve associated therewith. The frame thus formed is advantageously provided with straps so that the frame can be carried on a wearer's back and it provides a spacing and insulation for a breathing system which advantageously includes a regenerator which is likely to heat during operation. The parts of the system are held in place on the frame by means of a casing which is secured to the frame.
Inventors
- 👤 Ernst Warncke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:37
CPC Classifications
A; A62; A62B; A62B7/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
A combination backing frame and high pressure tank forming a shoulder mounting for carrying on the back of a person to receive breathing gas, comprising a tubular frame structure forming a backing frame adapted to contain a high pressure breathing gas for the person and to produce a cooling effect when the breathing gas is released from the frame, said backing frame having one side conformable to the person's back and adapted to overlie the person's back and having an opposite rear side, a casing connected to said frame and covering said rear side, the space between said casing and said backing frame forming a receiving chamber, said tubular frame structure comprising a single coil tube formed into a rectangular grid, a heat producing breathing gas regenerator for producing breathing gas for the person and which produces heat with the production of the breathing gas connected to said high pressure tank and positioned inside and near the top of said chamber on a side of said tubular frame away from said one side thereof conformable to the person's back, said tubular frame positioned to physically separate said heat producing breathing air regenerator from the person's back and by the cooling of said frame to counteract the heating of said regenerator to prevent a heating of the person's back.
Claim 2
Dependent Claim
218 words
A combination backing frame and high pressure tank forming a shoulder mounting for carrying on the back of a person to receive breathing gas, comprising a tubular frame structure forming a backing frame adapted to contain a high pressure breathing gas for the person and to produce a cooling effect when the breathing gas is released from the frame, said backing frame having one side conformable to the person's back and adapted to overlie the person's back and having an opposite rear side, a casing connected to said frame and covering said rear side, the space between said casing and said backing frame forming a receiving chamber, said tubular frame structure comprising a single coil tube formed into a rectangular grid, a heat producing breathing gas regenerator for producing breathing gas for the person and which produces heat with the production of the breathing gas connected to said high pressure tank and positioned inside and near the top of said chamber on a side of said tubular frame away from said one side thereof conformable to the person's back, said tubular frame positioned to physically separate said heat producing breathing air regenerator from the person's back and by the cooling of said frame to counteract the heating of said regenerator to prevent a heating of the person's back.
Claim 3
Dependent Claim
229 words
A combination backing frame and high pressure tank forming a shoulder mounting for carrying on the back of a person to receive breathing gas, comprising a tubular frame structure forming a backing frame which is adapted to contain a high pressure breathing gas for the person and to produce a cooling effect when the breathing gas is released from the frame, said backing frame having one side conformable to the person's back and adapted to overlie the person's back and having an opposite rear side, a housing connected to said frame and covering said rear side, the space between said casing and said backing frame forming a receiving chamber, said tubular frame structure comprising a plurality of U-shaped tubes and a cross header forming a lower portion of said tubes interconnecting said tubes, a heat producing breathing gas regenerator for producing breathing gas for the person and which produces heat with the production of breathing gas connected to said high pressure tank and positioned inside and near the top of said chamber on a side of said tubular frame away from said one side thereof conformable to the person's back, said tubular frame positioned to physically separate said heat producing breathing gas regenerator from the person's back and by the cooling of said frame to counteract the heating of said regenerator to prevent the heating of the person's back.
Claim 4
Dependent Claim
229 words
A combination backing frame and high pressure tank forming a shoulder mounting for carrying on the back of a person to receive breathing gas, comprising a tubular frame structure forming a backing frame which is adapted to contain a high pressure breathing gas for the person and to produce a cooling effect when the breathing gas is released from the frame, said backing frame having one side conformable to the person's back and adapted to overlie the person's back and having an opposite rear side, a housing connected to said frame and covering said rear side, the space between said casing and said backing frame forming a receiving chamber, said tubular frame structure comprising a plurality of U-shaped tubes and a cross header forming a lower portion of said tubes interconnecting said tubes, a heat producing breathing gas regenerator for producing breathing gas for the person and which produces heat with the production of breathing gas connected to said high pressure tank and positioned inside and near the top of said chamber on a side of said tubular frame away from said one side thereof conformable to the person's back, said tubular frame positioned to physically separate said heat producing breathing gas regenerator from the person's back and by the cooling of said frame to counteract the heating of said regenerator to prevent the heating of the person's back.
Claim 5
Independent Claim
170 words
A method of preventing the heating of a person's back who is carrying a heat producing breathing air regenerator connected to a tubular frame structure for containing a high pressure breathing gas for the person and which produces a cooling effect when the breathing gas is released from the frame, comprising, forming the tubular frame into a backing frame shaped to conform to the person's back and adapted to overlie the person's back, connecting a casing to the tubular frame to define a receiving chamber therebetween, positioning the heat producing breathing gas regenerator within the receiving chamber and connecting the regenerator to the tubular frame so that the tubular frame is positioned to physically separate the person's back from the regenerator, and withdrawing breathing gas from the tubular frame and regenerator which produces the cooling effect on the tubular frame and a heating effect on the regenerator, whereby the cooling effect of the tubular frame counteracts the heating effect of the regenerator and prevents the heating of the person's back.
Claim 6
Independent Claim
170 words
A method of preventing the heating of a person's back who is carrying a heat producing breathing air regenerator connected to a tubular frame structure for containing a high pressure breathing gas for the person and which produces a cooling effect when the breathing gas is released from the frame, comprising, forming the tubular frame into a backing frame shaped to conform to the person's back and adapted to overlie the person's back, connecting a casing to the tubular frame to define a receiving chamber therebetween, positioning the heat producing breathing gas regenerator within the receiving chamber and connecting the regenerator to the tubular frame so that the tubular frame is positioned to physically separate the person's back from the regenerator, and withdrawing breathing gas from the tubular frame and regenerator which produces the cooling effect on the tubular frame and a heating effect on the regenerator, whereby the cooling effect of the tubular frame counteracts the heating effect of the regenerator and prevents the heating of the person's back.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |