Patent US3209714A successfully refreshed from Google Patents.
US3209714A
Expired / Lapsed
US
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Fluid control systems for foils
Assignee: Individual
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Filing: 1963-10-14
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Granted: 1965-10-05
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Romald E Bowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:29
CPC Classifications
B; B63; B63H; B63H25/00; B63H25/48; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285; B63B1/288; B64; B64C; B64C23/00; B64C23/005; Y; Y10; Y10S; Y10S73/00; Y10S73/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A FOIL CONTROL SYSTEM FOR POSITIONING A FOIL IN ITS ENVIRONMENT COMPRISING MEANS FOR SENSING LIFT OF SAID FOIL AND PRODUCING A FIRST FLUID SIGNAL INDICATIVE THEREOF, MEANS FOR MEASURING THE DEPTH OF SAID FOIL RELATIVE TO A COMMANDED DEPTH AND PRODUCING A SECOND FLUID SIGNAL INDICATIVE THEREOF, FLUID AMPLIFIER MEANS FOR COMBINING SAID SIGNALS AND PRODUCING A FURTHER FLUID FLOW SIGNAL WHICH IS IN A FUNCTION OF BOTH SAID FIRST AND SECOND FLUID SIGNALS AND MEANS RESPONSIVE TO SAID FURTHER FLUID SIGNAL FOR ALTERING THE LIFT OF SAID FOIL AS A FUNCTION OF SAID FURTHER SIGNAL.
Claim 2
Dependent Claim
97 words
A FOIL CONTROL SYSTEM FOR POSITIONING A FOIL IN ITS ENVIRONMENT COMPRISING MEANS FOR SENSING LIFT OF SAID FOIL AND PRODUCING A FIRST FLUID SIGNAL INDICATIVE THEREOF, MEANS FOR MEASURING THE DEPTH OF SAID FOIL RELATIVE TO A COMMANDED DEPTH AND PRODUCING A SECOND FLUID SIGNAL INDICATIVE THEREOF, FLUID AMPLIFIER MEANS FOR COMBINING SAID SIGNALS AND PRODUCING A FURTHER FLUID FLOW SIGNAL WHICH IS IN A FUNCTION OF BOTH SAID FIRST AND SECOND FLUID SIGNALS AND MEANS RESPONSIVE TO SAID FURTHER FLUID SIGNAL FOR ALTERING THE LIFT OF SAID FOIL AS A FUNCTION OF SAID FURTHER SIGNAL.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |