US3613616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means providing buoyancy of immersed crafts and crafts incorporating such means
Assignee: Individual
•
Filing: 1969-07-25
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Granted: 1971-10-19
•
Expires: 1989-07-25
Abstract
Abstract A buoy adapted to aid in the location of a submerged craft comprising an open-bottomed normally flooded buoyancy chamber, a case enclosed in said chamber containing a gas-producing substance used to displace the water in said chamber upon release, and another casing also enclosed in said chamber containing a signal transmitter. Both of said casings are partially expansable to permit a balance of fluid pressures to prevent crushing the buoy at extreme ocean depths.
Inventors
- 👤 James Basset
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:08
CPC Classifications
B; B63; B63C; B63C7/00; B63C7/06; B63C7/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
An equipment for buoys, submarines, and the like objects liable to sink down to a dangerous depth comprising at least one chamber, the lower end of which is fully and permanently open, a first partly expansible enclosure carried entirely within said chamber, said first enclosure carrying a gas-generating charge and having normally covered openings adapted to be opened by the pressure of the gas evolved within said first enclosure, a second partly expansible enclosure within said chamber an insulating liquid body filling entirely said second enclosure, and a signalling transmitter immersed in said liquid and adapted to operate at a predetermined moment.
Claim 2
Dependent Claim
102 words
An equipment for buoys, submarines, and the like objects liable to sink down to a dangerous depth comprising at least one chamber, the lower end of which is fully and permanently open, a first partly expansible enclosure carried entirely within said chamber, said first enclosure carrying a gas-generating charge and having normally covered openings adapted to be opened by the pressure of the gas evolved within said first enclosure, a second partly expansible enclosure within said chamber an insulating liquid body filling entirely said second enclosure, and a signalling transmitter immersed in said liquid and adapted to operate at a predetermined moment.
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |