US3078401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biased synchro control all attitude pitch indicator
Assignee: General Precision Inc
•
Filing: 1960-12-28
•
Granted: 1963-02-19
•
Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Molander
- 👤 Edelman Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:44
CPC Classifications
B; B64; B64D; B64D45/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
A CORRECTION CIRCUIT FOR GENERATING A SINUSOIDAL CORRECTION VOLTAGE IN A SERVO SYSTEM HAVING A FIRST AND SECOND ELECTRICALLY CONNECTED STATOR WINDING OF A FIRST AND SECOND RESPECTIVE SERVO DEVICE; SAID CORRECTION CIRCUIT INCLUDING A RESISTOR CONNECTED IN THE CIRCUIT FORMING SAID ELECTRICAL CONNECTION BETWEEN SAID FIRST AND SECOND STATOR WINDINGS; EACH OF SAID FIRST AND SECOND SERVO DEVICES HAVING RESPECTIVE ROTOR WINDINGS; A VOLTAGE CONTROLLED BY THE VOLTAGE DROP ACROSS SAID RESISTOR BEING OPERATIVELY CONNECTED IN SERIES WITH ONE OF SAID ROTOR WINDINGS BY CIRCUIT CONNECTING MEANS; SAID CIRCUIT CONNECTING MEANS INCLUDING AMPLIFIER MEANS FOR CONTROLLING THE MAGNITUDE OF THE CORRECTING VOLTAGE; SAID AMPLIFIER MEANS INCLUDING AN AUXILIARY SERVO MEANS HAVING A ROTOR AND A FIRST AND SECOND STATOR WINDING; SAID RESISTOR BEING CONNECTED IN SERIES WITH SAID FIRST AND SECOND STATOR WINDINGS; THE ROTOR WINDING OF SAID AUXILIARY SERVO MEANS BEING CON-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |