US3286144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
On-off integrating motor controller
Assignee: Ramsay Engineering Co
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Filing: 1963-11-06
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Granted: 1966-11-15
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Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 John L Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:30
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN INTEGRATING CONTROLLER COMPRISING: (A) MEANS FOR PRODUCING AN INTEGRATED ERROR SIGNAL; (B) MEANS FOR PREVENTING SAID INTEGRATED ERROR SIGNAL FROM INCREASING BEYOND A CERTAIN UPPER VALUE; (C) MEANS FOR DECREASING SAID INTEGRAL SIGNAL TO A CERTAIN LOWER VALUE AFTER REACHING SAID UPPER VALUE; (D) MEANS FOR CAUSING A CORRECTIVE ACTION TO OCCUR IN A DIRECTION TO REDUCE THE ERROR THAT PRODUCED SAID INTEGRATED SIGNAL WHILE SAID SIGNAL IS DECREASING, AND (E) MEANS FOR DELAYING THE SUBSEQUENT PRODUCTION OF AN OTHER INTEGRATED ERROR SIGNAL UNTIL AFTER SAID ABOVEMENTIONED INTEGRATED SIGNAL HAS BEEN DECREASED TO ITS SAID LOWER VALUE.
Claim 2
Dependent Claim
98 words
AN INTEGRATING CONTROLLER COMPRISING: (A) MEANS FOR PRODUCING AN INTEGRATED ERROR SIGNAL; (B) MEANS FOR PREVENTING SAID INTEGRATED ERROR SIGNAL FROM INCREASING BEYOND A CERTAIN UPPER VALUE; (C) MEANS FOR DECREASING SAID INTEGRAL SIGNAL TO A CERTAIN LOWER VALUE AFTER REACHING SAID UPPER VALUE; (D) MEANS FOR CAUSING A CORRECTIVE ACTION TO OCCUR IN A DIRECTION TO REDUCE THE ERROR THAT PRODUCED SAID INTEGRATED SIGNAL WHILE SAID SIGNAL IS DECREASING, AND (E) MEANS FOR DELAYING THE SUBSEQUENT PRODUCTION OF AN OTHER INTEGRATED ERROR SIGNAL UNTIL AFTER SAID ABOVEMENTIONED INTEGRATED SIGNAL HAS BEEN DECREASED TO ITS SAID LOWER VALUE.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |