Patent US3593095A successfully refreshed from Google Patents.
US3593095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System to compensate for the nonlinearity of a self-synchronous torque transmitter
Assignee: Vernitron Corp
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Filing: 1968-12-26
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Granted: 1971-07-13
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Expires: 1988-12-26
Abstract
Abstract The invention is concerned with a conventional servosystem which in response to an input electrical signal produces a torque output via a mechanical feedback shaft which drives a synchro torque transmitter. A feedback transducer responsive to the electrical output signal of the torque transmitter and to its torque input (actually the torque output of the servomechanism) produces an electrical feedback signal for continually compensating the system for inaccuracy in the torque transmitter and for capacitance losses resulting from lengthy output leads of the torque transmitter.
Inventors
- 👤 Sidney Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:17
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/122
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
117 words
In a servosystem of the type wherein an electrical signal from a control transformer is applied to an amplifier which drives a motor having an output shaft coupled to both a torque transmitter and the rotor of said control transformer and wherein said torque transmitter is relatively inaccurate as compared to said control transformer, the improvement comprising, a second control transformer mechanically coupled to said output shaft and responsive to an electrical output signal from said torque transmitter for producing an electrical feedback signal representing the difference therebetween, and sUmming means for combining said feedback signal and said electrical signal and applying said combined signal to said amplifier, whereby the inaccuracy of said torque transmitter is corrected.
Claim 2
Dependent Claim
117 words
In a servosystem of the type wherein an electrical signal from a control transformer is applied to an amplifier which drives a motor having an output shaft coupled to both a torque transmitter and the rotor of said control transformer and wherein said torque transmitter is relatively inaccurate as compared to said control transformer, the improvement comprising, a second control transformer mechanically coupled to said output shaft and responsive to an electrical output signal from said torque transmitter for producing an electrical feedback signal representing the difference therebetween, and sUmming means for combining said feedback signal and said electrical signal and applying said combined signal to said amplifier, whereby the inaccuracy of said torque transmitter is corrected.
Claim 3
Dependent Claim
36 words
The servosystem as recited in claim 1 wherein said electrical output signal is carried by lines of substantial length, and is fed to said second control transformer from a point relatively remote from said torque transmitter.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |