Patent US3428791A successfully refreshed from Google Patents.
US3428791A
Expired / Lapsed
US
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Non-injection self-adaptive controller
Assignee: Boeing North American Inc
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Filing: 1963-04-24
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Granted: 1969-02-18
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Expires: 1983-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert E Chandos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G05D1/0825; G01; G01R; G01R23/00; G05B; G05B13/00; G05B13/02; G05B13/0205; G05B13/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A CONTROL SYSTEM RESPONSIVE TO AN INPUT SIGNAL FOR CONTROLLING A CONTROLLED ELEMENT THE COMBINATION COMPRISING A CONTROLLER HAVING AN ADJUSTABLE RESPONSE CHARACTERISTIC, MEANS FOR MEASURING THE SPECTRAL CHARACTERISTIC OF EACH OF THE CONTROL SYSTEM INPUT SIGNAL AND THE RESPONSE OF THE CONTROLLED ELEMENT RESPECTIVELY FOR A PRESELECTED PLURALITY OF CONCOMITANT DISCRETE FREQUENCIES, MEANS RESPONSIVE TO SAID FIRST MENTIONED MEANS FOR INDICATING THE SPECTRAL CHARACTERISTIC OF THE RATIO OF SAID CONTROLLED ELEMENT RESPONSE TO SAID INPUT SIGNAL, AND MEANS RESPONSIVE TO SAID SECOND MENTIONED MEANS FOR ADJUSTING THE RESPONSE OF SAID CONTROLLER TO ACHIEVE A PREDETERMINED SPECTRAL CHARACTERTISTIC OF SAID RATIO.
Claim 2
Dependent Claim
102 words
IN A CONTROL SYSTEM RESPONSIVE TO AN INPUT SIGNAL FOR CONTROLLING A CONTROLLED ELEMENT THE COMBINATION COMPRISING A CONTROLLER HAVING AN ADJUSTABLE RESPONSE CHARACTERISTIC, MEANS FOR MEASURING THE SPECTRAL CHARACTERISTIC OF EACH OF THE CONTROL SYSTEM INPUT SIGNAL AND THE RESPONSE OF THE CONTROLLED ELEMENT RESPECTIVELY FOR A PRESELECTED PLURALITY OF CONCOMITANT DISCRETE FREQUENCIES, MEANS RESPONSIVE TO SAID FIRST MENTIONED MEANS FOR INDICATING THE SPECTRAL CHARACTERISTIC OF THE RATIO OF SAID CONTROLLED ELEMENT RESPONSE TO SAID INPUT SIGNAL, AND MEANS RESPONSIVE TO SAID SECOND MENTIONED MEANS FOR ADJUSTING THE RESPONSE OF SAID CONTROLLER TO ACHIEVE A PREDETERMINED SPECTRAL CHARACTERTISTIC OF SAID RATIO.
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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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |