US3073170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free rotor gyroscope control-torque applying means
Assignee: North American Aviation Corp
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Filing: 1959-03-27
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Granted: 1963-01-15
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Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
- 👤 John M Slater
- 👤 Robert B Horsfall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:47
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/30; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
IN A FREE-ROTOR GYRO HAVING A ROTOR SUPPORTED FOR THREE DEGREES OF ANGULAR FREEDOM RELATIVE TO THE GYRO CASE; MEANS FOR CAUSING SAID ROTOR TO ROTATE ABOUT THE GYRO SPIN AXIS; AND PRECISION CONTROL-TORQUE APPLYING MEANS COMPRISING A CONDUCTIVE SHELL FIXEDLY RELATED TO SAID ROTOR AND BEING A FIGURE OF REVOLUTION ABOUT SAID SPIN AXIS; FIRST, SECOND, THIRD AND FOURTH MAGNETS EACH HAVING A SUBSTANTIALLY CONSTANT FIELD STRENGTH; MEANS FOR MOUNTING SAID FIRST MAGNET IN FIXED RELATION WITH SAID GYRO CASE SO THAT THE POLES OF SAID FIRST MAGNET CLOSELY OPPOSE SAID CONDUCTIVE SHELL; MEANS FOR MOUNTING SAID SECOND MAGNET TO SAID GYRO CASE FOR TRANSLATIONAL ADJUSTMENT ALONG SAID SPIN AXIS WHILE MAINTAINING THE POLES OF SAID SECOND MAGNET CLOSELY OPPOSED SAID CONDUCTIVE SHELL IN A POSITION OPPOSITE THAT OF SAID FIRST MAGNET; MEANS FOR MOUNTING SAID THIRD MAGNET IN FIXED RELATION WITH SAID GYRO CASE SO THAT THE POLES OF SAID THIRD MAGNET CLOSELY OPPOSE SAID CONDUCTIVE SHELL IN A POSITION FROM SAID FIRST MAGNET WHICH IS DISPLACED 90* ALONG THE CIRCUMFERENTIAL PATH DEFINED BY SAID CONDUCTIVE SHELL; AND MEANS FOR
Claim 2
Dependent Claim
182 words
IN A FREE-ROTOR GYRO HAVING A ROTOR SUPPORTED FOR THREE DEGREES OF ANGULAR FREEDOM RELATIVE TO THE GYRO CASE; MEANS FOR CAUSING SAID ROTOR TO ROTATE ABOUT THE GYRO SPIN AXIS; AND PRECISION CONTROL-TORQUE APPLYING MEANS COMPRISING A CONDUCTIVE SHELL FIXEDLY RELATED TO SAID ROTOR AND BEING A FIGURE OF REVOLUTION ABOUT SAID SPIN AXIS; FIRST, SECOND, THIRD AND FOURTH MAGNETS EACH HAVING A SUBSTANTIALLY CONSTANT FIELD STRENGTH; MEANS FOR MOUNTING SAID FIRST MAGNET IN FIXED RELATION WITH SAID GYRO CASE SO THAT THE POLES OF SAID FIRST MAGNET CLOSELY OPPOSE SAID CONDUCTIVE SHELL; MEANS FOR MOUNTING SAID SECOND MAGNET TO SAID GYRO CASE FOR TRANSLATIONAL ADJUSTMENT ALONG SAID SPIN AXIS WHILE MAINTAINING THE POLES OF SAID SECOND MAGNET CLOSELY OPPOSED SAID CONDUCTIVE SHELL IN A POSITION OPPOSITE THAT OF SAID FIRST MAGNET; MEANS FOR MOUNTING SAID THIRD MAGNET IN FIXED RELATION WITH SAID GYRO CASE SO THAT THE POLES OF SAID THIRD MAGNET CLOSELY OPPOSE SAID CONDUCTIVE SHELL IN A POSITION FROM SAID FIRST MAGNET WHICH IS DISPLACED 90* ALONG THE CIRCUMFERENTIAL PATH DEFINED BY SAID CONDUCTIVE SHELL; AND MEANS FOR
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |