US3110281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible keet construction
Assignee: Individual
•
Filing: 1962-05-14
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Granted: 1963-11-12
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Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Lloyd P Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:11
CPC Classifications
B; B63; B63B; B63B41/00; B63B2041/003; B63B2041/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN COMBINATION WITH A FLOATABLE HULL HAVING A SEPARATE KEEL DISPOSED THEREBENEATH, AND INTERMEDIATE CONNECTING MEANS FOR VERTICALLY RAISING AND LOWERING THE KEEL TOWARD AND AWAY FROM THE HULL WHEN THE LATTER IS AFLOAT: A FLEXIBLE AND LONGITUDINALLY FOLDABLE, ENCIRCLING WALL MUTUALLY CONNECTING THE HULL AND KEEL, FORMING A CLOSED CHAMBER THEREBETWEEN, AND PRESENTING AN EXTERNAL STREAMLINED SURFACE (WHEN THE KEEL IS LOWERED) TO A BODY OF WATER WHICH FLOATS THE HULL, SAID CHAMBER HAVING APERTURE AND CLOSURE MEANS ADAPTED FOR SELECTIVE RECEPTION, RETENTION AND EXPULSION OF CHAMBER-FILLING FLUID, WHEREBY THE THUS-INFLATED CHAMBER MAY HAVE ITS FLEXIBLE WALL DISPOSED SUBSTANTIALLY RIGID AGAINST THE PRESSURE OF EXTERNAL WATER WHICH FLOATS SAID HULL.
Claim 2
Dependent Claim
111 words
IN COMBINATION WITH A FLOATABLE HULL HAVING A SEPARATE KEEL DISPOSED THEREBENEATH, AND INTERMEDIATE CONNECTING MEANS FOR VERTICALLY RAISING AND LOWERING THE KEEL TOWARD AND AWAY FROM THE HULL WHEN THE LATTER IS AFLOAT: A FLEXIBLE AND LONGITUDINALLY FOLDABLE, ENCIRCLING WALL MUTUALLY CONNECTING THE HULL AND KEEL, FORMING A CLOSED CHAMBER THEREBETWEEN, AND PRESENTING AN EXTERNAL STREAMLINED SURFACE (WHEN THE KEEL IS LOWERED) TO A BODY OF WATER WHICH FLOATS THE HULL, SAID CHAMBER HAVING APERTURE AND CLOSURE MEANS ADAPTED FOR SELECTIVE RECEPTION, RETENTION AND EXPULSION OF CHAMBER-FILLING FLUID, WHEREBY THE THUS-INFLATED CHAMBER MAY HAVE ITS FLEXIBLE WALL DISPOSED SUBSTANTIALLY RIGID AGAINST THE PRESSURE OF EXTERNAL WATER WHICH FLOATS SAID HULL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |