Patent US3122689A successfully refreshed from Google Patents.
US3122689A
Expired / Lapsed
US
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Control system
Assignee: Individual
•
Filing: 1961-02-21
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Granted: 1964-02-25
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Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Duane E Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:51
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A FEEDBACK CONTROL SYSTEM FOR CONTROLLING THE OUTPUT OF A DEVICE OVER A SUBSTANTIAL OUTPUT RANGE, COMPRISING: FEEDBACK MEANS CAPABLE OF RESPONDING TO SAID OUTPUT WITHIN THE CONTROL REGION OF SAID FEEDBACK MEANS CORRESPONDING TO A CONTROLLED FRACTIONAL PART OF SAID OUTPUT RANGE FOR GENERATING AN OUTPUT SIGNAL DEPENDENT ON SAID OUTPUT WITHIN SAID FRACTIONAL PART OF SAID RANGE, COMMAND MEANS FOR GENERATING AN INPUT SIGNAL WITHIN THE RESPONSE CAPABILITY OF SAID FEEDBACK MEANS, COMPARING MEANS RECEIVING SAID OUTPUT SIGNAL AND SAID INPUT SIGNAL AND GENERATING AN ERROR SIGNAL FROM THE COMPARISON THEREOF, A CONTROL ELEMENT CONNECTED TO SAID DEVICE AND SAID COMPARING MEANS FOR CHANGING THE OUTPUT OF SAID DEVICE WITHIN SAID FRACTIONAL PART IN RESPONSE TO SAID ERROR SIGNAL, AND SLEW MEANS COUPLED WITH SAID COMMAND MEANS FOR GENERATING A SLEW SIGNAL OUTSIDE THE RESPONSE CAPABILITY OF SAID FEEDBACK MEANS AND CONNECTED TO SAID CONTROL ELEMENT FOR SHIFTING SAID FRACTIONAL PART WITH RESPECT TO SAID OUTPUT RANGE.
Claim 2
Dependent Claim
159 words
A FEEDBACK CONTROL SYSTEM FOR CONTROLLING THE OUTPUT OF A DEVICE OVER A SUBSTANTIAL OUTPUT RANGE, COMPRISING: FEEDBACK MEANS CAPABLE OF RESPONDING TO SAID OUTPUT WITHIN THE CONTROL REGION OF SAID FEEDBACK MEANS CORRESPONDING TO A CONTROLLED FRACTIONAL PART OF SAID OUTPUT RANGE FOR GENERATING AN OUTPUT SIGNAL DEPENDENT ON SAID OUTPUT WITHIN SAID FRACTIONAL PART OF SAID RANGE, COMMAND MEANS FOR GENERATING AN INPUT SIGNAL WITHIN THE RESPONSE CAPABILITY OF SAID FEEDBACK MEANS, COMPARING MEANS RECEIVING SAID OUTPUT SIGNAL AND SAID INPUT SIGNAL AND GENERATING AN ERROR SIGNAL FROM THE COMPARISON THEREOF, A CONTROL ELEMENT CONNECTED TO SAID DEVICE AND SAID COMPARING MEANS FOR CHANGING THE OUTPUT OF SAID DEVICE WITHIN SAID FRACTIONAL PART IN RESPONSE TO SAID ERROR SIGNAL, AND SLEW MEANS COUPLED WITH SAID COMMAND MEANS FOR GENERATING A SLEW SIGNAL OUTSIDE THE RESPONSE CAPABILITY OF SAID FEEDBACK MEANS AND CONNECTED TO SAID CONTROL ELEMENT FOR SHIFTING SAID FRACTIONAL PART WITH RESPECT TO SAID OUTPUT RANGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |