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Patent US3137462A successfully refreshed from Google Patents.
US3137462A
Expired / Lapsed
US
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Control apparatus for a craft
Assignee: Honeywell Inc
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Filing: 1962-04-24
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Granted: 1964-06-16
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Expires: 1982-04-24
Abstract
No abstract record available.
Inventors
- 👤 Russell C Hendrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:44
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G05D1/0825
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN AN AUTOMATIC CONDITION CONTROL APPARATUS FOR A CRAFT HAVING A CONDITION CHANGING DEVICE: A CLOSED LOOP APPARATUS OPERATING SAID DEVICE COMPRISING AN INPUT SIGNAL SOURCE, A FOLLOW-UP CONTROL SIGNAL SOURCE RESPONSIVE TO A FUNCTION OF A CHANGE OF SAID CONDITION; FURTHER MEANS COMPRISING AN AMPLIFIER RESPONSIVE TO AN ERROR SIGNAL DERIVED FROM THE DIFFERENCE OF THE SIGNALS FROM SAID INPUT SIGNAL SOURCE AND SAID FOLLOW UP CONTROL SIGNAL SOURCE; GAIN CONTROL MEANS FOR SAID AMPLIFIER; AND ADDITIONAL MEANS CONTROLLING SAID GAIN CONTROL MEANS AND RESPONSIVE TO CYCLIC MOTIONS OF SAID CONDITION CHANGING DEVICE, TO FREQUENCIES OTHER THAN THAT PRESENT IN SAID CYCLIC MOTIONS, AND TO A SELECTIVELY ADJUSTABLE MEANS.
References Cited (Backward Citations)
US3073554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |