Patent US3086157A successfully refreshed from Google Patents.
US3086157A
Expired / Lapsed
US
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Motor control circuit
Assignee: 3M Co
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Filing: 1960-04-11
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Granted: 1963-04-16
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Flavio S C Branco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/488; H; H02; H02P; H02P23/00; H02P23/18; H02P23/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A MOTOR CONTROL CIRCUIT, AN ADJUSTABLE MOTOR TO BE REGULATED, AN ADJUSTABLE TACHOMETER COUPLED TO THE MOTOR FOR GENERATING A SIGNAL HAVING AN OUTPUT FREQUENCY, AND CONTROL MEANS COUPLED TO THE ADJUSTABLE TACHOMETER AND RESPONSIVE TO DIFFERENT SPEEDS OF THE MOTOR FOR ADJUSTING THE OPERATION OF THE TACHOMETER IN ACCORDANCE WITH THE DIFFERENT SPEEDS OF THE ADJUSTABLE MOTOR TO MAINTAIN
Claim 2
Dependent Claim
61 words
IN A MOTOR CONTROL CIRCUIT, AN ADJUSTABLE MOTOR TO BE REGULATED, AN ADJUSTABLE TACHOMETER COUPLED TO THE MOTOR FOR GENERATING A SIGNAL HAVING AN OUTPUT FREQUENCY, AND CONTROL MEANS COUPLED TO THE ADJUSTABLE TACHOMETER AND RESPONSIVE TO DIFFERENT SPEEDS OF THE MOTOR FOR ADJUSTING THE OPERATION OF THE TACHOMETER IN ACCORDANCE WITH THE DIFFERENT SPEEDS OF THE ADJUSTABLE MOTOR TO MAINTAIN
References Cited (Backward Citations)
US2528467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |