Patent US3141383A successfully refreshed from Google Patents.
US3141383A
Expired / Lapsed
US
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Drum servo control valve
Assignee: RTX Corp
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Filing: 1961-05-08
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Granted: 1964-07-21
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Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 Robert N Abild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:01
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; G21C7/16; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2365; Y10T137/2409; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776; Y10T137/8593; Y10T137/87169; Y10T137/87193; Y10T137/87201; Y10T137/87209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A SERVO SYSTEM, A CONDUIT, A SERVO SUPPLY, CONNECTED TO SAID CONDUIT MEANS FOR VARYING SAID SERVO SUPPLY INCLUDING VALVE MEANS POSITIONED IN A CHAMBER TO REGULATE FLOW THROUGH SAID CONDUIT, MOTOR MEANS, LOCKING MEANS CONNECTED TO SAID CONDUIT OPERATIVELY CONNECTED TO SAID MOTOR MEANS FOR RESTRAINING MOVEMENT OF SAID MOTOR MEANS, MEANS RESPONSIVE TO VARIATIONS IN SAID SERVO SUPPLY FOR RELEASING SAID LOCKING MEANS AND ACTUATING SAID MOTOR MEANS, FEEDBACK MEANS RESPONSIVE TO PRESSURE IN SAID CHAMBER ACTING ON SAID VALVE MEANS AND ADDITIONAL FEEDBACK MEANS RESPONSIVE TO FLOW IN SAID CONDUIT ACTING UPON SAID SERVO SUPPLY VARYING MEANS.
Claim 2
Dependent Claim
101 words
IN A SERVO SYSTEM, A CONDUIT, A SERVO SUPPLY, CONNECTED TO SAID CONDUIT MEANS FOR VARYING SAID SERVO SUPPLY INCLUDING VALVE MEANS POSITIONED IN A CHAMBER TO REGULATE FLOW THROUGH SAID CONDUIT, MOTOR MEANS, LOCKING MEANS CONNECTED TO SAID CONDUIT OPERATIVELY CONNECTED TO SAID MOTOR MEANS FOR RESTRAINING MOVEMENT OF SAID MOTOR MEANS, MEANS RESPONSIVE TO VARIATIONS IN SAID SERVO SUPPLY FOR RELEASING SAID LOCKING MEANS AND ACTUATING SAID MOTOR MEANS, FEEDBACK MEANS RESPONSIVE TO PRESSURE IN SAID CHAMBER ACTING ON SAID VALVE MEANS AND ADDITIONAL FEEDBACK MEANS RESPONSIVE TO FLOW IN SAID CONDUIT ACTING UPON SAID SERVO SUPPLY VARYING MEANS.
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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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |