Patent US3199484A successfully refreshed from Google Patents.
US3199484A
Expired / Lapsed
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Load-alleviator hydrofoil unit for watercraft
Assignee: Boeing Co
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Filing: 1964-10-19
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Granted: 1965-08-10
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Walter R Wiberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:48
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A WATERCRAFT HAVING A HULL, A LOAD-ALLEVIATING HYDROFOIL UNIT COMPRISING: (A) A SWEEPBACK FOIL HAVING AN AFT SWEEP BACK PORTION AND FORWARD SWEEP BACK PORTION; (B) REACTION MEANS RESPONSIVE TO MOVEMENT OF SAID FOIL AND MOUNTED ON SAID HULL; (C) A FIRST ARM HAVING ONE END CONNECTED TO SAID REACTION MEANS AND DEPENDNG FORWARDLY AND DOWNWARDLY, THE OTHER END OF SAID ARM FIXEDLY CONNECTED TO SAID FOIL AFTER SWEEPBACK PORTION; AND
Claim 2
Dependent Claim
72 words
IN A WATERCRAFT HAVING A HULL, A LOAD-ALLEVIATING HYDROFOIL UNIT COMPRISING: (A) A SWEEPBACK FOIL HAVING AN AFT SWEEP BACK PORTION AND FORWARD SWEEP BACK PORTION; (B) REACTION MEANS RESPONSIVE TO MOVEMENT OF SAID FOIL AND MOUNTED ON SAID HULL; (C) A FIRST ARM HAVING ONE END CONNECTED TO SAID REACTION MEANS AND DEPENDNG FORWARDLY AND DOWNWARDLY, THE OTHER END OF SAID ARM FIXEDLY CONNECTED TO SAID FOIL AFTER SWEEPBACK PORTION; AND
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |