Patent US4057478A successfully refreshed from Google Patents.
Patent US3762407A successfully refreshed from Google Patents.
US3762407A
Expired / Lapsed
US
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Survival support device
Assignee: Lear Siegler Inc
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Filing: 1972-04-24
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Granted: 1973-10-02
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Expires: 1992-04-24
Abstract
Abstract Apparatus for providing a breathable gas to an individual in an emergency situation is provided in practice of this invention. The apparatus contains a breathable mixture of gas for a prolonged period and, when actuated, provides about 10 minutes of gas to the user. The gas is contained at high pressure in a lightweight long tube coiled about a combined fill valve, pressure regulator, flow control, pressure gauge, and actuation mechanism. This assembly is in a canister and actuated by perforating a pressure containing diaphragm between the gas storage reservoir and the pressure regulator. The canister is connected to the back of a plastic hood that is fittable over a user''s head so that the canister is arranged during use at the nape of the user''s neck so as not to interfere with any emergency operations and, for example, to permit the user to wear a helmet or the like. Gas from the canister passes into the hood at a substantially constant rate and is vented as required through a check valve. An elastic band around the person''s neck limits leakage.
Inventors
- 👤 D Shonerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:21
CPC Classifications
A; A62; A62B; A62B17/00; A62B17/04; A62B7/00; A62B7/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
191 words
In a survival support device comprising: a substantially impervious flexible bag sufficiently large to fit over a user''s head and including a transparent portion adjacent at least a front part of the bag; means for permitting gas flow out of the bag and inhibiting gas flow into the bag; a hollow coil of high pressure tubing for containing a breathable gas at high pressure; regulator means within the coil for maintaining a substantially contansT outlet pressure over a broad range of inlet pressures and a substantially constant flow from the outlet thereof; actuator means within the coil for substantially instantly connecting the regulator means to the reservoir means; means for supporting the coil from the bag at a rear portion thereof against the nape of a user''s neck, the improvement wherein, the coil of high pressure tubing comprises at least an outer quadrilateral coil around the regulator means and actuator means which are substantially rectangular in shape; and an inner quadrilateral coil substantially concentric with the outer coil and closely conforming to the shape of the regulator means and actuator means whereby the total volume of the gas supply is minimized.
Claim 2
Dependent Claim
191 words
In a survival support device comprising: a substantially impervious flexible bag sufficiently large to fit over a user''s head and including a transparent portion adjacent at least a front part of the bag; means for permitting gas flow out of the bag and inhibiting gas flow into the bag; a hollow coil of high pressure tubing for containing a breathable gas at high pressure; regulator means within the coil for maintaining a substantially contansT outlet pressure over a broad range of inlet pressures and a substantially constant flow from the outlet thereof; actuator means within the coil for substantially instantly connecting the regulator means to the reservoir means; means for supporting the coil from the bag at a rear portion thereof against the nape of a user''s neck, the improvement wherein, the coil of high pressure tubing comprises at least an outer quadrilateral coil around the regulator means and actuator means which are substantially rectangular in shape; and an inner quadrilateral coil substantially concentric with the outer coil and closely conforming to the shape of the regulator means and actuator means whereby the total volume of the gas supply is minimized.
Claim 3
Dependent Claim
83 words
In a survival support device as defined in claim 1 the further improvement comprising: a diaphragm between the reservoir means and the regulator means, capable of withstanding a substantial pressure there-across; a plunger having a perforating tip adjacent the diaphragm; means for mounting the plunger for movement towards the diaphragm a sufficient distance that the perforating tip can penetrate the diaphragm; means for biasing the plunger towards the diaphragm; and a removable retaining pin for temporarily holding the plunger away from the diaphragm.
Claim 4
Dependent Claim
58 words
In a survival support device as defined in claim 1 the further improvement comprising: a pressure gauge in communication with the coil of tubing; a pressure containing fill valve in communication with the coil of tubing; and wherein the pressure gauge, the fill valve, and the actuator means are all accessible from the ends of the hollow cylinder.
Claim 5
Dependent Claim
22 words
In a survival support device as defined in claim 1 the further improvement wherein the transparent portion of the bag is flexible.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |