US3154731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control system for dynamo electric machine
Assignee: AMF Inc
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Filing: 1961-05-17
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Granted: 1964-10-27
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Sussman Max
- 👤 Warshawsky Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A SYSTEM FOR OPERATING A D.C. MOTOR FROM AN A.C. SOURCE, A POWER CIRCUIT CONNECTED BETWEEN THE SOURCE AND THE MOTOR INCLUDING IN ITS INPUT ADJUSTABLE MEANS FOR ADJUSTING THE A.C. VOLTAGE OF THE POWER SUPPLIED FROM SAID SOURCE AND A PAIR OF ASYMMETRIC CONDUCTIVE DEVICES FED WITH THE ADJUSTED VOLTAGE OUTPUT OF SAID ADJUSTABLE MEANS, SAID DEVICES BEING POLED SO AS TO RESPECTIVELY PASS CURRENT TO SAID MOTOR DURING ALTERNATE HALF CYCLES OF THE APPLIED A.C. VOLTAGE, AND OTHER CONTROL MEANS RESPONSIVE TO THE ADJUSTMENT OF SAID ADJUSTABLE MEANS PROVIDING A RELATIVELY LOW VALUE INPUT VOLTAGE TO SAID DEVICES, TO EFFECTIVELY DISABLE ONE OF SAID DEVICES WHILE ALLOWING NORMAL OPERATION OF THE OTHER DEVICE TO SUPPLY RECTIFIED
Claim 2
Dependent Claim
119 words
IN A SYSTEM FOR OPERATING A D.C. MOTOR FROM AN A.C. SOURCE, A POWER CIRCUIT CONNECTED BETWEEN THE SOURCE AND THE MOTOR INCLUDING IN ITS INPUT ADJUSTABLE MEANS FOR ADJUSTING THE A.C. VOLTAGE OF THE POWER SUPPLIED FROM SAID SOURCE AND A PAIR OF ASYMMETRIC CONDUCTIVE DEVICES FED WITH THE ADJUSTED VOLTAGE OUTPUT OF SAID ADJUSTABLE MEANS, SAID DEVICES BEING POLED SO AS TO RESPECTIVELY PASS CURRENT TO SAID MOTOR DURING ALTERNATE HALF CYCLES OF THE APPLIED A.C. VOLTAGE, AND OTHER CONTROL MEANS RESPONSIVE TO THE ADJUSTMENT OF SAID ADJUSTABLE MEANS PROVIDING A RELATIVELY LOW VALUE INPUT VOLTAGE TO SAID DEVICES, TO EFFECTIVELY DISABLE ONE OF SAID DEVICES WHILE ALLOWING NORMAL OPERATION OF THE OTHER DEVICE TO SUPPLY RECTIFIED
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |