Patent US3097332A successfully refreshed from Google Patents.
US3097332A
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Speed control and regulating circuits
Assignee: 3M Co
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Filing: 1959-01-08
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Granted: 1963-07-09
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Expires: 1979-01-08
Abstract
No abstract record available.
Inventors
- 👤 John T Mullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:06
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/26; H02P7/265; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN COMBINATION FOR REGULATING THE SPEED OF A MOTOR IN DRIVING A MEDIUM CAPABLE OF RECORDING AND REPRODUCING INFORMATION, MEANS COUPLED TO THE MOTOR FOR GENERATING TWO SIGNALS HAVING FREQUENCIES RELATED TO THE SPEED OF THE MOTOR, A TUNED CIRCUIT ARRANGEMENT COUPLED TO SAID GENERATING MEANS FOR PHASE MODULATING ONE OF SAID SIGNALS IN ACCORDANCE WITH THE FREQUENCY DEVIATION OF SAID ONE SIGNAL FROM THE RESONANT FREQUENCY OF SAID TUNED CIRCUIT ARRANGEMENT, AND ELECTRICAL CIRCUITRY RESPONSIVE JOINTLY
Claim 2
Dependent Claim
77 words
IN COMBINATION FOR REGULATING THE SPEED OF A MOTOR IN DRIVING A MEDIUM CAPABLE OF RECORDING AND REPRODUCING INFORMATION, MEANS COUPLED TO THE MOTOR FOR GENERATING TWO SIGNALS HAVING FREQUENCIES RELATED TO THE SPEED OF THE MOTOR, A TUNED CIRCUIT ARRANGEMENT COUPLED TO SAID GENERATING MEANS FOR PHASE MODULATING ONE OF SAID SIGNALS IN ACCORDANCE WITH THE FREQUENCY DEVIATION OF SAID ONE SIGNAL FROM THE RESONANT FREQUENCY OF SAID TUNED CIRCUIT ARRANGEMENT, AND ELECTRICAL CIRCUITRY RESPONSIVE JOINTLY
References Cited (Backward Citations)
US2575925A
Cited
GB767173A
Cited
US2864988A
Cited
US2803793A
Cited
US2863100A
Cited
US2913652A
Cited
US2910638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |