US3290563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-synchronizing controller with auxiliary load means for "bumpless" transfer between manual and automatic modes
Assignee: General Electric Co
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Filing: 1964-07-31
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Granted: 1966-12-06
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Donald R Hyer
- 👤 Jr Clarence W Hewlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:31
CPC Classifications
G; G05; G05B; G05B7/00; G05B7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A SYSTEM FOR SYNCHRONIZING A CONTROLLER WHICH IS CAPABLE OF AUTOMATIC AND MANUAL CONTROL TO PREVENT THE DISRUPTION OF THE CONTROLLED PROCESS WHEN SWITCHING BETWEEN ITS AUTOMATIC AND MANUAL MODES OF OPERATION COMPRISING SIGNAL AMPLIFYING MEANS FOR PROVIDING AN OUTPUT SIGNAL PROPORTIONAL TO SIGNALS APPLIED TO THE INPUT THEREOF, SIGNAL INTEGRATING MEANS INCLUDING MEANS FOR PROVIDING AN OUTPUT SIGNAL WHICH IS PROPORTIONAL TO THE INTEGRAL OF SIGNALS APPLIED TO THE INPUT OF SAID SIGNAL INTEGRATING MEANS, A PROCESS LOAD ELECTRICALLY COUPLED TO AND ENERGIZED BY THE OUTPUT OF SAID SIGNAL AMPLIFYING MEANS, A DUMMY LOAD ELECTRICALLY COUPLED TO AND ENERGIZED BY THE OUTPUT OF SAID SIGNAL INTEGRATING MEANS, A SOURCE OF ERROR SIGNALS, MEANS FOR CONNECTING SAID ERROR SIGNAL SOURCE TO THE INPUT OF SAID SIGNAL AMPLIFYING MEANS, MEANS FOR OBTAINING A DIFFERENCE CURRENT WHICH IS PROPORTIONAL TO THE DIFFERENCE BETWEEN THE CURRENTS OF SAID PROCESS LOAD AND SAID DUMMY LOAD, AND MEANS FOR APPLYING SAID DIFFERENCE CURRENT TO THE INPUT OF SAID SIGNAL INTEGRATING MEANS IN A POLARITY FOR EQUALIZING THE OUTPUT CURRENT OF SAID SIGNAL INTEGRATING MEANS WITH THE OUTPUT CURRENT OF SAID SIGNAL AMPLIFYING MEANS.
Claim 2
Independent Claim
188 words
A SYSTEM FOR SYNCHRONIZING A CONTROLLER WHICH IS CAPABLE OF AUTOMATIC AND MANUAL CONTROL TO PREVENT THE DISRUPTION OF THE CONTROLLED PROCESS WHEN SWITCHING BETWEEN ITS AUTOMATIC AND MANUAL MODES OF OPERATION COMPRISING SIGNAL AMPLIFYING MEANS FOR PROVIDING AN OUTPUT SIGNAL PROPORTIONAL TO SIGNALS APPLIED TO THE INPUT THEREOF, SIGNAL INTEGRATING MEANS INCLUDING MEANS FOR PROVIDING AN OUTPUT SIGNAL WHICH IS PROPORTIONAL TO THE INTEGRAL OF SIGNALS APPLIED TO THE INPUT OF SAID SIGNAL INTEGRATING MEANS, A PROCESS LOAD ELECTRICALLY COUPLED TO AND ENERGIZED BY THE OUTPUT OF SAID SIGNAL AMPLIFYING MEANS, A DUMMY LOAD ELECTRICALLY COUPLED TO AND ENERGIZED BY THE OUTPUT OF SAID SIGNAL INTEGRATING MEANS, A SOURCE OF ERROR SIGNALS, MEANS FOR CONNECTING SAID ERROR SIGNAL SOURCE TO THE INPUT OF SAID SIGNAL AMPLIFYING MEANS, MEANS FOR OBTAINING A DIFFERENCE CURRENT WHICH IS PROPORTIONAL TO THE DIFFERENCE BETWEEN THE CURRENTS OF SAID PROCESS LOAD AND SAID DUMMY LOAD, AND MEANS FOR APPLYING SAID DIFFERENCE CURRENT TO THE INPUT OF SAID SIGNAL INTEGRATING MEANS IN A POLARITY FOR EQUALIZING THE OUTPUT CURRENT OF SAID SIGNAL INTEGRATING MEANS WITH THE OUTPUT CURRENT OF SAID SIGNAL AMPLIFYING MEANS.
References Cited (Backward Citations)
US3246250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |