US4195619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating the air and suit of a free swimming diver
Assignee: Individual
•
Filing: 1978-07-05
•
Granted: 1980-04-01
•
Expires: 1998-07-05
Abstract
Abstract A heat exchange unit is carried on the back of a free swimming diver and includes small tanks of propane and oxygen and a mixing chamber into which the two gases are fed and mixed. The gaseous mixture is then fed through a burner nozzle and burned to heat the atmosphere in a heat exchange chamber. The chamber includes a first coil therethrough in which air from the main oxygen tank is circulated and heated on its way to the diver's mask. A second coil through the heat exchange chamber carries water or other heating fluid from the diver's suit which is heated and returned.
Inventors
- 👤 James P. Hollen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:02
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A self-contained heating device for heating the air supply and suit of an underwater diver comprising: (a) an enclosed heat exchange chamber and means for introducing heat into the space therein; (b) a first coil within said chamber having an inlet and an outlet and a means for attaching said inlet to a source of oxygen and said outlet to a diver's mask; (c) a second coil within said chamber separate from said first coil and having an inlet and outlet, said inlet and outlet selectively connectable to a diver's suit and receiving a heating fluid therefrom, passing said fluid through said chamber, and returning said fluid to said suit.
Claim 2
Dependent Claim
110 words
A self-contained heating device for heating the air supply and suit of an underwater diver comprising: (a) an enclosed heat exchange chamber and means for introducing heat into the space therein; (b) a first coil within said chamber having an inlet and an outlet and a means for attaching said inlet to a source of oxygen and said outlet to a diver's mask; (c) a second coil within said chamber separate from said first coil and having an inlet and outlet, said inlet and outlet selectively connectable to a diver's suit and receiving a heating fluid therefrom, passing said fluid through said chamber, and returning said fluid to said suit.
Claim 3
Dependent Claim
27 words
The heating device according to claim 1 wherein said second coil includes a pump means connected to one of said inlet and outlet for circulating said fluid.
Claim 4
Dependent Claim
51 words
The heating device according to claim 1 wherein said means for introducing heat into said heat exchange chamber includes a source of combustible gas stored in a separate chamber and a burner nozzle connecting said separate chamber and said heat exchange chamber for introducing said combustible gas under controlled flow thereinto.
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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) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |