US3605670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of solids for buoyancy control in deep submergence applications
Assignee: United States Department of the Navy
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Filing: 1969-07-25
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Granted: 1971-09-20
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Expires: 1989-07-25
Abstract
Abstract A LOW ENERGY BUOYANCY CONTROL SYSTEM FOR A DEEP SUBMERSIBLE VEHICLE EMPLOYING A PLURALITY OF DISCRETE BUOYANT BODIES IN A NON-PRESSURIZED, AMBIENT WATER-CONNECTING TANK, WITH MEANS FOR CONTROLLABLY RELEASING THE BUOYANT BODIES TO DECRESE BUOYANCY OF THE VEHICLE.
Inventors
- 👤 Richard J Dzikowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:42
CPC Classifications
B; B63; B63G; B63G8/00; B63G8/14; B63G8/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |