US3191567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for hydrofoil craft
Assignee: RTX Corp
•
Filing: 1962-09-24
•
Granted: 1965-06-29
•
Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Henry R Ask
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:22
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285; B63B1/286
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A CONTROL SYSTEM FOR A WATER VEHICLE COMPRISING A PAIR OF FIXED SURFACE PIERCING FOILS CONNECTED WITH SAID VEHICLE AND ADAPTED TO INHERENTLY PROVIDE LIFT TO SAID VEHICLE, THE AMOUNT OF LIFT AUTOMATICALLY VARYING IN PROPORTION TO THE AREA OF THE FOILS IN WATER TO THEREBY STABILIZE SAID VEHICLE, CONTROL SURFACE MEANS INCLUDING MOVABLE FLAPS ATTACHED TO EACH OF SAID FOIL, SENSOR MEANS CONNECTED WITH SAID VEHICLE FOR PRODUCING A HEAVE CONTROL VOLTAGE INDICATIVE OF VERTICAL ACCELERATIONS OF SAID VEHICLE, AND MEANS RESPONSIVE TO SAID CONTROL VOLTAGE FOR ACTUATING SAID FLAPS COLLECTIVELY AND DAMPING THE HEAVE OF SAID VEHICLE.
Claim 2
Dependent Claim
99 words
A CONTROL SYSTEM FOR A WATER VEHICLE COMPRISING A PAIR OF FIXED SURFACE PIERCING FOILS CONNECTED WITH SAID VEHICLE AND ADAPTED TO INHERENTLY PROVIDE LIFT TO SAID VEHICLE, THE AMOUNT OF LIFT AUTOMATICALLY VARYING IN PROPORTION TO THE AREA OF THE FOILS IN WATER TO THEREBY STABILIZE SAID VEHICLE, CONTROL SURFACE MEANS INCLUDING MOVABLE FLAPS ATTACHED TO EACH OF SAID FOIL, SENSOR MEANS CONNECTED WITH SAID VEHICLE FOR PRODUCING A HEAVE CONTROL VOLTAGE INDICATIVE OF VERTICAL ACCELERATIONS OF SAID VEHICLE, AND MEANS RESPONSIVE TO SAID CONTROL VOLTAGE FOR ACTUATING SAID FLAPS COLLECTIVELY AND DAMPING THE HEAVE OF SAID VEHICLE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |