Patent US3201669A successfully refreshed from Google Patents.
US3201669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo type integrator with means for minimizing the effects of friction
Assignee: Dresser Industries Inc
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Filing: 1962-12-17
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Granted: 1965-08-17
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Hans E Hollmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:05
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN INTEGRATOR COMPRISING: FIXED SUPPORT MEANS; A SELSYN RECEIVER HAVING A STATOR INCLUDING A WINDING FIXED TO SAID SUPPORT MEANS AND A ROTOR INCLUDING A WINDING ROTATABLY CARRIED ON SAID SUPPORT MEANS; A SELSYN TRANSMITTER HAVING A STATOR INCLUDING A WINDING FIXED TO SAID SUPPORT MEANS AND A ROTOR INCLUDING A WINDING ROTATABLY SUPPORTED FROM SAID SELSYN RECEIVER ROTOR; MEANS TO APPLY AN ALTERNATING VOLTAGE TO SAID SELSYN TRANSMITTER ROTOR WINDING; MEANS TO CONNECT SAID STATOR WINDINGS ELECTRICALLY; MEANS FOR PRODUCING AN ERROR SIGNAL PROPORTIONAL TO THE DIFFERENCE BETWEEN THE AMPLITUDES OF SAID APPLIED VOLTAGE AND THE VOLTAGE INDUCED IN SAID SELSYN RECEIVER ROTOR WINDING; AND MEANS RESPONSIVE TO SAID ERROR SIGNAL FOR RORATING SAID SELSYN RECEIVER ROTOR IN A DIRECTION TENDING TO REDUCE SAID ERROR SIGNAL TO ZERO.
Claim 2
Dependent Claim
129 words
AN INTEGRATOR COMPRISING: FIXED SUPPORT MEANS; A SELSYN RECEIVER HAVING A STATOR INCLUDING A WINDING FIXED TO SAID SUPPORT MEANS AND A ROTOR INCLUDING A WINDING ROTATABLY CARRIED ON SAID SUPPORT MEANS; A SELSYN TRANSMITTER HAVING A STATOR INCLUDING A WINDING FIXED TO SAID SUPPORT MEANS AND A ROTOR INCLUDING A WINDING ROTATABLY SUPPORTED FROM SAID SELSYN RECEIVER ROTOR; MEANS TO APPLY AN ALTERNATING VOLTAGE TO SAID SELSYN TRANSMITTER ROTOR WINDING; MEANS TO CONNECT SAID STATOR WINDINGS ELECTRICALLY; MEANS FOR PRODUCING AN ERROR SIGNAL PROPORTIONAL TO THE DIFFERENCE BETWEEN THE AMPLITUDES OF SAID APPLIED VOLTAGE AND THE VOLTAGE INDUCED IN SAID SELSYN RECEIVER ROTOR WINDING; AND MEANS RESPONSIVE TO SAID ERROR SIGNAL FOR RORATING SAID SELSYN RECEIVER ROTOR IN A DIRECTION TENDING TO REDUCE SAID ERROR SIGNAL TO ZERO.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |