Patent US3258669A successfully refreshed from Google Patents.
US3258669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable width fulse-fed micromotor control system
Assignee: —
•
Filing: —
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Granted: 1966-06-28
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:14
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/29; H02P7/2913; Y; Y10; Y10S; Y10S388/00; Y10S388/90; Y10S388/902; Y10S388/907; Y10S388/912; Y10S388/923; Y10S388/934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A D.C. ELECTRIC MICROMOTOR HAVING A MOTOR CONTROL DEVICE FOR FIXING THE ANGULAR POSITION OF SAID MOTOR WITHIN PRESET LIMITS, COMPRISING A DETECTING DEVICE FOR DELIVERING AN ELECTRICAL SIGNAL THE FREQUENCY OF WHICH VARIES AS THE SPEED OF REVOLUTION OF THE MOTOR AND THE PHASE OF WHICH VARIES AS THE ANGULAR POSITION OF SAID MOTOR, A COMPARATOR DEVICE FOR COMPARING THE PHASE AND THE FREQUENCY OF SAID ELECTRICAL SIGNAL TO A PREDETERMINED ANGULAR POSITION AND PREDETERMINED SPEED OF SAID MOTOR, RESPECTIVELY, AND FOR DELIVERING AN ON-OFF TYPE ERROR SIGNAL, SAID ERROR SIGNAL REMAINING IN ONE OF ITS STATES AS LONG AS SAID MOTOR OPERATES BELOW A PREDETERMINED MINIMUM SPEED OR SAID MOTOR OPERATES BELOW A PREDETERMINED ANGULAR POSITION, SAID ERROR SIGNAL REMMAINING IN ITS OTHER STATE AS LONG AS THE MOTOR OPERATES AT OR ABOVE SAID PREDETERMINED MINIMUM SPEEDD AND AS LONG ASD ITS ANGULAR POSITION IS AT OR LEADING PREDETERMINED ANGULAR POSITION, AND AN INSTANTANEOUSLY WORKING RELAY CONTROLLED BY SAID ERROR SIGNAL FOR SWITCHING ON OR OFF THE ELECTRICAL ENERGY SUPPLY TO SAID MOTOR ACCORDING TO THE STATE OF SAID ERROR
Claim 2
Dependent Claim
182 words
A D.C. ELECTRIC MICROMOTOR HAVING A MOTOR CONTROL DEVICE FOR FIXING THE ANGULAR POSITION OF SAID MOTOR WITHIN PRESET LIMITS, COMPRISING A DETECTING DEVICE FOR DELIVERING AN ELECTRICAL SIGNAL THE FREQUENCY OF WHICH VARIES AS THE SPEED OF REVOLUTION OF THE MOTOR AND THE PHASE OF WHICH VARIES AS THE ANGULAR POSITION OF SAID MOTOR, A COMPARATOR DEVICE FOR COMPARING THE PHASE AND THE FREQUENCY OF SAID ELECTRICAL SIGNAL TO A PREDETERMINED ANGULAR POSITION AND PREDETERMINED SPEED OF SAID MOTOR, RESPECTIVELY, AND FOR DELIVERING AN ON-OFF TYPE ERROR SIGNAL, SAID ERROR SIGNAL REMAINING IN ONE OF ITS STATES AS LONG AS SAID MOTOR OPERATES BELOW A PREDETERMINED MINIMUM SPEED OR SAID MOTOR OPERATES BELOW A PREDETERMINED ANGULAR POSITION, SAID ERROR SIGNAL REMMAINING IN ITS OTHER STATE AS LONG AS THE MOTOR OPERATES AT OR ABOVE SAID PREDETERMINED MINIMUM SPEEDD AND AS LONG ASD ITS ANGULAR POSITION IS AT OR LEADING PREDETERMINED ANGULAR POSITION, AND AN INSTANTANEOUSLY WORKING RELAY CONTROLLED BY SAID ERROR SIGNAL FOR SWITCHING ON OR OFF THE ELECTRICAL ENERGY SUPPLY TO SAID MOTOR ACCORDING TO THE STATE OF SAID ERROR
References Cited (Backward Citations)
US2866143A
Cited
US2945997A
Cited
US3005940A
Cited
US2932778A
Cited
US3084307A
Cited
US3054966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |