Patent US1639685A successfully refreshed from Google Patents.
Patent US3277725A successfully refreshed from Google Patents.
US3277725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for testing rate gyros
Assignee: McDonnell Aircraft Corp
•
Filing: 1963-07-18
•
Granted: 1966-10-11
•
Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Donald G Kingsborough
- 👤 Harold W Hossfeld
- 👤 Martin D Settles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:20
CPC Classifications
G; G01; G01C; G01C25/00; G01C25/005; G01C19/00; G01C19/02; G01C19/42; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A GYRO OF THE TYPE HAVING A ROTOR WITH A CONDUCTIVE PERIPHERY, A GIMBAL, AND A PICKOFF DEVICE FOR PRODUCING AN ELECTRIC OUTPUT SIGNAL RESPONSIVE TO MOVEMENT OF THE GIMBAL, THE IMPROVEMENT THAT COMPRISES AN ELECTROMAGNET HAVING A PAIR OF POLES DISPOSED ADJACENT THE ROTOR PERIPHERY SO AS TO INDUCE EDDY CURRENTS THEREON UPON ROTATION OF THE ROTOR, SAID POLES HAVING POLE FACES DISPOSED IN OPPOSITE QUADRANTS DEFINED BY PERPENDICULAR PLANES EXTENDING THROUGH THE CENTER OF THE ROTOR, ONE OF WHICH PLANES PASSES THROUGH THE ROTOR AXIS.
Claim 2
Dependent Claim
88 words
IN A GYRO OF THE TYPE HAVING A ROTOR WITH A CONDUCTIVE PERIPHERY, A GIMBAL, AND A PICKOFF DEVICE FOR PRODUCING AN ELECTRIC OUTPUT SIGNAL RESPONSIVE TO MOVEMENT OF THE GIMBAL, THE IMPROVEMENT THAT COMPRISES AN ELECTROMAGNET HAVING A PAIR OF POLES DISPOSED ADJACENT THE ROTOR PERIPHERY SO AS TO INDUCE EDDY CURRENTS THEREON UPON ROTATION OF THE ROTOR, SAID POLES HAVING POLE FACES DISPOSED IN OPPOSITE QUADRANTS DEFINED BY PERPENDICULAR PLANES EXTENDING THROUGH THE CENTER OF THE ROTOR, ONE OF WHICH PLANES PASSES THROUGH THE ROTOR AXIS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |