Patent US3354857A successfully refreshed from Google Patents.
US3354857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil craft
Assignee: Individual
•
Filing: 1965-09-13
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Granted: 1967-11-28
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Stephen W Hobday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:58
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/30; B63B1/02; B63B1/10; B63B1/12; B63B1/125; B63B1/246; B63B1/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A HYDROFOIL CRAFT, OF THE TYPE ADAPTED FOR FULLY FOIL-BORNE OPERATION, THE COMBINATION COMPRISING, A TRIMARAN HULL, AT LEAST ONE STRUT DISPOSED BETWEEN EACH PAIR OF HULLS AND SUPPORTING A LIFT-IMPARTING FOIL ADJACENT ITS ONE END, SUPPORT MEANS FOR CONNECTING EACH STRUT TO AT LEAST ONE OF THE HULLS FOR THE ASSOCIATED PAIR, SAID SUPPORT MEANS SELECTIVELY PERMITTING OPERATION OF AT LEAST SOME OF SAID STRUTS FROM A DOWNWARDLY EXTENDED POSITION IN WHICH SAID FOILS ARE DISPOSED TO PERMIT FULLY FOIL-BORNE OPERATION OF SAID CRAFT TO A REARWARD FULLY RETRACTED POSITION IN WHICH SAID STRUTS THE THE ASSOCIATED FOILS ARE PROTECTED BY THE OUTER-
Claim 2
Dependent Claim
105 words
IN A HYDROFOIL CRAFT, OF THE TYPE ADAPTED FOR FULLY FOIL-BORNE OPERATION, THE COMBINATION COMPRISING, A TRIMARAN HULL, AT LEAST ONE STRUT DISPOSED BETWEEN EACH PAIR OF HULLS AND SUPPORTING A LIFT-IMPARTING FOIL ADJACENT ITS ONE END, SUPPORT MEANS FOR CONNECTING EACH STRUT TO AT LEAST ONE OF THE HULLS FOR THE ASSOCIATED PAIR, SAID SUPPORT MEANS SELECTIVELY PERMITTING OPERATION OF AT LEAST SOME OF SAID STRUTS FROM A DOWNWARDLY EXTENDED POSITION IN WHICH SAID FOILS ARE DISPOSED TO PERMIT FULLY FOIL-BORNE OPERATION OF SAID CRAFT TO A REARWARD FULLY RETRACTED POSITION IN WHICH SAID STRUTS THE THE ASSOCIATED FOILS ARE PROTECTED BY THE OUTER-
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |