Patent US4294225A successfully refreshed from Google Patents.
US4294225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diver heater system
Assignee: ENERGY SYSTEMS CORP
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Filing: 1979-05-22
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Granted: 1981-10-13
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Expires: 1999-05-22
Abstract
Abstract High-pressure air from the air supply is admitted into the heater system through a pressure regulator. Fuel, such as propane, enters the system from a fuel canister. The air and fuel of controlled volumes mix and flow together into a catalytic combustion chamber where combustion is initiated by a spark generator. The heat of combustion is caused to pass through the walls of the combustion chamber, then through thermoelectric modules, converting part of the heat to electricity. The remaining and larger part of the heat passes to a heat exchanger on the opposite side of the thermoelectric module. Circulating water passes through the heat-exchanging chamber, absorbs the heat produced by the combustion reaction and is further pumped to the diver's suit. The electricity generated by the thermoelectric modules is used to power an electric motor driving a circulating pump.
Inventors
- 👤 Kenneth E. Mayo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:21
CPC Classifications
A; A61; A61F; A61F7/00; B; B63; B63C; B63C11/00; B63C11/02; B63C11/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
A heater for warming the body of a diver while under water comprising a housing, having a fluid inlet, a combustion chamber, means for supplying air and means for supplying fuel to said chamber of combustion therein, and means for exhausting the products of combustion, a fluid heat exchanger arranged in association with said combustion chamber, a pump for circulating fluid through said heat exchanger to be heated, electric motor means for operating said pump, and thermoelectric means mounted in association with said combustion chamber for converting a portion of said heat to electrical energy and means for passing said electrical energy to said motor to operate said pump, said pump having means for passing the heated fluid to the diver said means for supplying said fuel comprises a fuel storage canister removably securable to said housing in combination with the exhaust means from said combustion chamber to cause said fuel storage canister to be heated by said exhaust.
Claim 2
Dependent Claim
159 words
A heater for warming the body of a diver while under water comprising a housing, having a fluid inlet, a combustion chamber, means for supplying air and means for supplying fuel to said chamber of combustion therein, and means for exhausting the products of combustion, a fluid heat exchanger arranged in association with said combustion chamber, a pump for circulating fluid through said heat exchanger to be heated, electric motor means for operating said pump, and thermoelectric means mounted in association with said combustion chamber for converting a portion of said heat to electrical energy and means for passing said electrical energy to said motor to operate said pump, said pump having means for passing the heated fluid to the diver said means for supplying said fuel comprises a fuel storage canister removably securable to said housing in combination with the exhaust means from said combustion chamber to cause said fuel storage canister to be heated by said exhaust.
Claim 3
Dependent Claim
15 words
The heater according to claim 1 including means for adjustably regulating the flow of exhaust.
Claim 4
Dependent Claim
33 words
The heater according to claims 1, including a temperature controlled valve means for cooling heated water exiting from said heat exchanger means when said heated water is in excess of a predetermined temperature.
Claim 5
Dependent Claim
37 words
The heater according to claim 3, including a diver underwater suit having means for the passage of water therethrough in conduction proximity to said diver's skin, said suit having means for connection to said water conduit means.
Claim 6
Dependent Claim
58 words
The heater according to claim 1, including means for mixing said air and fuel for induction to said combustion chamber, air flow regulator means for adjusting the volume of said air before entering to said mixing means, and fuel flow regulating means for adjusting the volume of said fuel before entry of said fuel to said mixing means.
Claim 7
Dependent Claim
14 words
The heater according to claim 5, including combustion-catalytic material contained within said combustion chamber.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |