Patent US3381191A successfully refreshed from Google Patents.
US3381191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque amplifier
Assignee: Kollsman Instrument Corp
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Filing: 1965-03-03
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Granted: 1968-04-30
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Expires: 1985-03-03
Abstract
No abstract record available.
Inventors
- 👤 James W Angus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:01
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/50; G; G01; G01D; G01D5/00; G01D5/12; G01P; G01P5/00; G01P5/14; G05; G05D; G05D17/00; G05D3/00; G05D3/12; G05D3/121; G05D3/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A SERVO SYSTEM COMPRISING A RELATIVELY LOW TORQUE ROTATABLE INPUT SHAFT, A RELATIVELY HIGH TORQUE OUTPUT SHAFT, A SYNCHRO DEVICE COMPRISING A STATOR WINDING AND A ROTOR WINDING MEANS, A SERVO MOTOR HAVING AN INPUT WINDING, A POWER SUPPLY AND A SERVO AMPLIFIER HAVING INPUT AND OUTPUT TERMINALS; SAID ROTATABLE INPUT SHAFT CONNECTED TO SAID ROTOR WINDING MEANS; SAID POWER SUPPLY CONNECTED TO SAID STATOR WINDING; SAID ROTOR WINDING MEANS CONNECTED TO SAID INPUT TERMINALS OF SAID AMPLIFIER; SAID INPUT WINDING OF SAID SERVO MOTOR CONNECTED TO SAID OUTPUT TERMINALS OF SAID AMPLIFIER SAID MOTOR MECHANICALLY CONNECTED TO SAID STATOR WINDING TO ROTATE SAID STATOR WINDING TO NULL THE SIGNAL GENERATED BY SAID ROTOR WINDING MEANS RESPONSIVE TO ROTATION OF SAID INPUT SHAFT; SAID MOTOR MECHANICALLY CONNECTED TO SAID OUTPUT SHAFT TO ROTATE SAID OUTPUT SHAFT RESPONSIVE TO ROTATION OF SAID INPUT SHAFT.
Claim 2
Dependent Claim
143 words
A SERVO SYSTEM COMPRISING A RELATIVELY LOW TORQUE ROTATABLE INPUT SHAFT, A RELATIVELY HIGH TORQUE OUTPUT SHAFT, A SYNCHRO DEVICE COMPRISING A STATOR WINDING AND A ROTOR WINDING MEANS, A SERVO MOTOR HAVING AN INPUT WINDING, A POWER SUPPLY AND A SERVO AMPLIFIER HAVING INPUT AND OUTPUT TERMINALS; SAID ROTATABLE INPUT SHAFT CONNECTED TO SAID ROTOR WINDING MEANS; SAID POWER SUPPLY CONNECTED TO SAID STATOR WINDING; SAID ROTOR WINDING MEANS CONNECTED TO SAID INPUT TERMINALS OF SAID AMPLIFIER; SAID INPUT WINDING OF SAID SERVO MOTOR CONNECTED TO SAID OUTPUT TERMINALS OF SAID AMPLIFIER SAID MOTOR MECHANICALLY CONNECTED TO SAID STATOR WINDING TO ROTATE SAID STATOR WINDING TO NULL THE SIGNAL GENERATED BY SAID ROTOR WINDING MEANS RESPONSIVE TO ROTATION OF SAID INPUT SHAFT; SAID MOTOR MECHANICALLY CONNECTED TO SAID OUTPUT SHAFT TO ROTATE SAID OUTPUT SHAFT RESPONSIVE TO ROTATION OF SAID INPUT SHAFT.
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |