Patent US3081654A successfully refreshed from Google Patents.
US3081654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1959-10-15
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Granted: 1963-03-19
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Expires: 1979-10-15
Abstract
No abstract record available.
Inventors
- 👤 John W Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:17
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/58; B21B37/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
IN CONTROL APPARATUS FOR CONTROLLING THE OPERATION OF A MACHINE DEVICE IN ACCORDANCE WITH AN OPERATION ERROR SIGNAL, THE COMBINATION OF A FIRST SIGNAL SENSING DEVICE RESPONSIVE TO A FIRST PREDETERMINED VALUE OF SAID ERROR SIGNAL, A SECOND SIGNAL SENSING DEVICE RESPONSIVE TO A SECOND PREDETERMINED VALUE OF SAID ERROR SIGNAL, A FIRST CONTROL PERIOD PROVIDING DEVICE OPERATIVE WITH SAID FIRST SIGNAL SENSING DEVICE FOR PROVIDING A FIRST CONTROL PERIOD HAVING A FIRST TIME DURATION WHEN SAID FIRST SIGNAL SENSING DEVICE RESPONDS TO A FIRST PREDETERMINED VALUE OF SAID ERROR SIGNAL, A SECOND CONTROL PERIOD PROVIDING DEVICE OPERATIVE WITH SAID SECOND SIGNAL SENSING DEVICE FOR PROVIDING A SECOND CONTROL PERIOD HAVING A SECOND TIME DURATION GREATER THAN SAID FIRST TIME PERIOD WHEN SAID SECOND SIGNAL SENSING DEVICE RESPONDS TO A SECOND PREDETERMINED VALUE OF SAID ERROR SIGNAL GREATER THAN SAID FIRST PREDETERMINED VALUE, A CONDITION SENSING DEVICE OPERATIVE WITH SAID MACHINE DEVICE FOR PROVIDING A CONTROL SIGNAL IN ACCORDANCE WITH AN OPERATING CONDITION OF SAID MACHINE DEVICE, AND A MACHINE DEVICE CONTROLLING MEMBER OPERATIVE WITH SAID MACHINE DEVICE TO CORRECT SAID ERROR SIGNAL, WITH SAID MACHINE DEVICE CONTROLLING MEMBER BEING RESPONSIVE TO ONE OF SAID FIRST AND SECOND CONTROL PERIODS AND ADDITIONALLY RESPONSIVE TO SAID CONTROL SIGNAL FOR CONTROLLING THE CORRECTION OF SAID ERROR SIGNAL.
Claim 2
Dependent Claim
215 words
IN CONTROL APPARATUS FOR CONTROLLING THE OPERATION OF A MACHINE DEVICE IN ACCORDANCE WITH AN OPERATION ERROR SIGNAL, THE COMBINATION OF A FIRST SIGNAL SENSING DEVICE RESPONSIVE TO A FIRST PREDETERMINED VALUE OF SAID ERROR SIGNAL, A SECOND SIGNAL SENSING DEVICE RESPONSIVE TO A SECOND PREDETERMINED VALUE OF SAID ERROR SIGNAL, A FIRST CONTROL PERIOD PROVIDING DEVICE OPERATIVE WITH SAID FIRST SIGNAL SENSING DEVICE FOR PROVIDING A FIRST CONTROL PERIOD HAVING A FIRST TIME DURATION WHEN SAID FIRST SIGNAL SENSING DEVICE RESPONDS TO A FIRST PREDETERMINED VALUE OF SAID ERROR SIGNAL, A SECOND CONTROL PERIOD PROVIDING DEVICE OPERATIVE WITH SAID SECOND SIGNAL SENSING DEVICE FOR PROVIDING A SECOND CONTROL PERIOD HAVING A SECOND TIME DURATION GREATER THAN SAID FIRST TIME PERIOD WHEN SAID SECOND SIGNAL SENSING DEVICE RESPONDS TO A SECOND PREDETERMINED VALUE OF SAID ERROR SIGNAL GREATER THAN SAID FIRST PREDETERMINED VALUE, A CONDITION SENSING DEVICE OPERATIVE WITH SAID MACHINE DEVICE FOR PROVIDING A CONTROL SIGNAL IN ACCORDANCE WITH AN OPERATING CONDITION OF SAID MACHINE DEVICE, AND A MACHINE DEVICE CONTROLLING MEMBER OPERATIVE WITH SAID MACHINE DEVICE TO CORRECT SAID ERROR SIGNAL, WITH SAID MACHINE DEVICE CONTROLLING MEMBER BEING RESPONSIVE TO ONE OF SAID FIRST AND SECOND CONTROL PERIODS AND ADDITIONALLY RESPONSIVE TO SAID CONTROL SIGNAL FOR CONTROLLING THE CORRECTION OF SAID ERROR SIGNAL.
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |