Patent US3270699A successfully refreshed from Google Patents.
US3270699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil craft
Assignee: Individual
•
Filing: 1965-03-04
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Granted: 1966-09-06
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Bush Vannevar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:57
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A SUBMERGED HYDROFOIL CRAFT, THE COMBINATION INCLUDING COMPLETLEY SUBMERGED DEPTHS SENSING MEANS AND MEANS TO SENSE VERTICAL ACCELERATIONS OF AT LEAST ONE FOIL, MEANS TO SUPPLY FLUID UNDER PRESSURES DETERMINED BY DEPTH AND BY VERTICAL ACCELERATIONS OF SAID ONE FOIL, CONTROL MECHANISMS TO VARY THE LIFT COEFFICIENTS OF SAID ONE FOIL, MEANS TO ACTUATE SAID MECHANISM IN RESPONSE TO FLUID PRESSURE VARIATIONS RESULTING FROM DEPTHS VARIATIONS AND VERTICAL ACCELERATIONS OF SAID ONE FOIL, AND MEANS TO CAUSE OUTWARD FLUID FLOW THROUGH THE DEPTH SENSING MEANS TO PREVENT FOULING THEREOF.
Claim 2
Dependent Claim
90 words
IN A SUBMERGED HYDROFOIL CRAFT, THE COMBINATION INCLUDING COMPLETLEY SUBMERGED DEPTHS SENSING MEANS AND MEANS TO SENSE VERTICAL ACCELERATIONS OF AT LEAST ONE FOIL, MEANS TO SUPPLY FLUID UNDER PRESSURES DETERMINED BY DEPTH AND BY VERTICAL ACCELERATIONS OF SAID ONE FOIL, CONTROL MECHANISMS TO VARY THE LIFT COEFFICIENTS OF SAID ONE FOIL, MEANS TO ACTUATE SAID MECHANISM IN RESPONSE TO FLUID PRESSURE VARIATIONS RESULTING FROM DEPTHS VARIATIONS AND VERTICAL ACCELERATIONS OF SAID ONE FOIL, AND MEANS TO CAUSE OUTWARD FLUID FLOW THROUGH THE DEPTH SENSING MEANS TO PREVENT FOULING THEREOF.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |