US3170104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed-responsive motor generator field control circuit
Assignee: General Dynamics Corp
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Filing: 1961-08-23
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Granted: 1965-02-16
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Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 Richards Paul
- 👤 Alfred A Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/24; B66B1/28; B66B1/30; B66B5/00; B66B5/02; B66B5/04; B66B5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A MOTOR GENERATOR FIELD CONTROL SYSTEM COMPRISING MAGNETIC AMPLIFIER MEANS PROVIDING AN OUTPUT VOLTAGE TO BE APPLIED TO A MOTOR GENERATOR TO DRIVE THE MOTOR IN ACCORDANCE WITH THE MAGNITUDE TO THE VOLTAGE, A FIRST CONTROL WINDING IN THE MAGNETIC AMPLIFIER MEANS FOR RECEIVING A CONTROL SIGNAL TO CONTROL THE OUTPUT VOLTAGE OF THE AMPLIFIER MEANS, A SECOND CONTROL WINDING IN THE MAGNETIC AMPLIFIER MEANS, MEANS RESPONSIVE TO THE SPEED OF ROTATION OF THE MOTOR TO PROVIDE A FEEDBACK SIGNAL PROPORTIONAL TO THE SPEED AND CIRCUIT MEANS CONNECTING THE MEANS RESPONSIVE TO THE SPEED OF THE MOTOR TO THE SECOND CONTROL WINDING TO DRIVE THE AMPLIFIER MEANS IN THE DIRECTION REDUCING THE OUTPUT VOLTAGE THEREFROM WHENEVER THE MOTOR SPEED EXCEEDS A SELECTED VALUE, SAID CIRCUIT MEANS INCLUDING MEANS NORMALLY PREVENTING APPLICATION OF FEEDBACK SIGNALS HAVING MANGITUDE BELOW A SELECTED LEVEL TO THE AMPLIFIER MEANS.
Claim 2
Dependent Claim
144 words
A MOTOR GENERATOR FIELD CONTROL SYSTEM COMPRISING MAGNETIC AMPLIFIER MEANS PROVIDING AN OUTPUT VOLTAGE TO BE APPLIED TO A MOTOR GENERATOR TO DRIVE THE MOTOR IN ACCORDANCE WITH THE MAGNITUDE TO THE VOLTAGE, A FIRST CONTROL WINDING IN THE MAGNETIC AMPLIFIER MEANS FOR RECEIVING A CONTROL SIGNAL TO CONTROL THE OUTPUT VOLTAGE OF THE AMPLIFIER MEANS, A SECOND CONTROL WINDING IN THE MAGNETIC AMPLIFIER MEANS, MEANS RESPONSIVE TO THE SPEED OF ROTATION OF THE MOTOR TO PROVIDE A FEEDBACK SIGNAL PROPORTIONAL TO THE SPEED AND CIRCUIT MEANS CONNECTING THE MEANS RESPONSIVE TO THE SPEED OF THE MOTOR TO THE SECOND CONTROL WINDING TO DRIVE THE AMPLIFIER MEANS IN THE DIRECTION REDUCING THE OUTPUT VOLTAGE THEREFROM WHENEVER THE MOTOR SPEED EXCEEDS A SELECTED VALUE, SAID CIRCUIT MEANS INCLUDING MEANS NORMALLY PREVENTING APPLICATION OF FEEDBACK SIGNALS HAVING MANGITUDE BELOW A SELECTED LEVEL TO THE AMPLIFIER MEANS.
References Cited (Backward Citations)
US2793338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |