Patent US3218593A successfully refreshed from Google Patents.
Patent US4208152A successfully refreshed from Google Patents.
US4208152A
Expired / Lapsed
US
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Diver support apparatus
Assignee: Northrop Grumman Corp
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Filing: 1978-10-23
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Granted: 1980-06-17
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Expires: 1998-10-23
Abstract
Abstract Apparatus for supporting the life, safety, comfort, and usefulness of an underwater diver by pumping seawater, or other ambient water in which the diver may be located, under pressure from a surface site to the submerged diver site, and locally converting by hydraulic friction at the diver site the hydraulic energy of such pressurized pumped seawater into diver-warming heat or/and mechanical energy for operating tools, pumps, etc.
Inventors
- 👤 John R. Colston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:21
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
Support apparatus for a diver at a submerged site in a body of ambient liquid, comprising, ambient liquid pump means at the surface of said body of liquid for pressurizing and displacing ambient liquid from said body, a flexible supply line extending from said pump means at the surface to said submerged site for conveying such pressurized ambient surface liquid downwardly thereto, and heat-producing conversion means at such submerged site connected to receive flow of pressurized ambient liquid from said line and operable to convert the hydraulic flow energy thereof into heat energy capable of maintaining comfort and warmth of such diver.
Claim 2
Dependent Claim
102 words
Support apparatus for a diver at a submerged site in a body of ambient liquid, comprising, ambient liquid pump means at the surface of said body of liquid for pressurizing and displacing ambient liquid from said body, a flexible supply line extending from said pump means at the surface to said submerged site for conveying such pressurized ambient surface liquid downwardly thereto, and heat-producing conversion means at such submerged site connected to receive flow of pressurized ambient liquid from said line and operable to convert the hydraulic flow energy thereof into heat energy capable of maintaining comfort and warmth of such diver.
Claim 3
Dependent Claim
24 words
The support apparatus of claim 1, wherein said heat-producing conversion means is affiliated with a submerged chamber containing breathing gas at such diver site.
Claim 4
Dependent Claim
13 words
The support apparatus of claim 1, wherein said heat-producing conversion means is diver-worn.
Claim 5
Dependent Claim
15 words
The support apparatus of claim 1, wherein said heat-producing conversion means includes a turbine pump.
Claim 6
Dependent Claim
16 words
The support apparatus of claim 1, wherein said heat-producing conversion means includes hydraulic flow restricting means.
Claim 7
Dependent Claim
59 words
The support apparatus of claim 1, wherein said heat-producing conversion means includes, a hydraulic motor operated by flow of pressurized ambient liquid from said supply line, a liquid flow restricting means, a heat exchanger means, and a pump operated by said hydraulic motor for circulating a liquid medium through said flow restricting means and through said heat exchanger means.
Claim 8
Dependent Claim
24 words
The support apparatus of claim 1, further including other means at said submerged diver site operable by pressurized ambient liquid from said supply line.
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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) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |