US3605149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal buoy
Assignee: Borg Warner Corp
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Filing: 1969-08-22
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Granted: 1971-09-20
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Expires: 1989-08-22
Abstract
Abstract A FLOATABLE SIGNAL BUOY FOR MARINE USE INCLUDING AN ELONGATED BODY HAVING A VISIBLE SECTION DEFINING A SIGNAL PORTION AND A SUBMERGIBLE SECTION DEFINING A WEIGHTED END PROVIDING A RESTORING FORCE TO MAINTAIN THE BODY IN AN ESSENTIALLY VERTICAL OPERATING POSITION. THE BODY DEFINES A BALLAST CHAMBER ADJACENT THE WEIGHTED END AND A CONDUIT IS PROVIDED TO INTRODUCE AIR INTO THE BALLAST CHAMBER TO INCREASE BUOYANCY TO CAUSE THE BUOY TO ASSUME AN OBLIQUE ATTITUDE WITH RESPECT TO THE SURFACE OF THE WATER
Inventors
- 👤 John B Keats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:25
CPC Classifications
B; B63; B63B; B63B22/00; B63B22/16; B63B22/166
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 |