Patent US3395322A successfully refreshed from Google Patents.
US3395322A
Expired / Lapsed
US
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Control apparatus for servo device
Assignee: Unisys Corp
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Filing: 1964-12-10
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Granted: 1968-07-30
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Expires: 1984-12-10
Abstract
No abstract record available.
Inventors
- 👤 Martin H Peterssen
- 👤 Everett R Tribken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:45
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0055; G05D1/0061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
APPARATUS FOR USE IN PRODUCING A SIGNAL USEFUL IN A CONTROL SYSTEM COMPRISING REFERENCE MEANS FOR ESTABLISHING AN ATTITUDE REFERENCE, PICK-OFF MEANS COUPLED TO SAID REFERENCE MEANS FOR PRODUCING A SIGNAL OF A PARTICULAR FREQUENCY HAVING A PHASE REPRESENTATIVE OF AN INSTANTANEOUS ATTITUDE WITH RESPECT TO SAID REFERENCE ATTITUDE, SIGNAL PRODUCING MEANS FOR PRODUCING A SIGNAL HAVING SAID PARTICULAR FREQUENCY, MEANS FOR COMPARING THE PHASES OF TWO SIGNALS TO PRODUCE AN OUTPUT SIGNAL REPRESENTING THE DIFFERENCE IN SUCH PHASES, MEANS FOR SHIFTING THE PHASE OF THE SIGNAL PRODUCED BY SAID SIGNAL PRODUCING MEANS IN PROPORTION TO SAID OUTPUT SIGNAL, SAID MEANS FOR COMPARING THE PHASES OF TWO SIGNALS BEING ARRANGED TO RECEIVE THE OUTPUT SIGNALS FROM SAID PICK-OFF MEANS AND SAID
Claim 2
Dependent Claim
121 words
APPARATUS FOR USE IN PRODUCING A SIGNAL USEFUL IN A CONTROL SYSTEM COMPRISING REFERENCE MEANS FOR ESTABLISHING AN ATTITUDE REFERENCE, PICK-OFF MEANS COUPLED TO SAID REFERENCE MEANS FOR PRODUCING A SIGNAL OF A PARTICULAR FREQUENCY HAVING A PHASE REPRESENTATIVE OF AN INSTANTANEOUS ATTITUDE WITH RESPECT TO SAID REFERENCE ATTITUDE, SIGNAL PRODUCING MEANS FOR PRODUCING A SIGNAL HAVING SAID PARTICULAR FREQUENCY, MEANS FOR COMPARING THE PHASES OF TWO SIGNALS TO PRODUCE AN OUTPUT SIGNAL REPRESENTING THE DIFFERENCE IN SUCH PHASES, MEANS FOR SHIFTING THE PHASE OF THE SIGNAL PRODUCED BY SAID SIGNAL PRODUCING MEANS IN PROPORTION TO SAID OUTPUT SIGNAL, SAID MEANS FOR COMPARING THE PHASES OF TWO SIGNALS BEING ARRANGED TO RECEIVE THE OUTPUT SIGNALS FROM SAID PICK-OFF MEANS AND SAID
References Cited (Backward Citations)
US3079548A
Cited
US3310721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |