Patent US3258977A successfully refreshed from Google Patents.
US3258977A
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Gyro drift limiting system
Assignee: General Precision Inc
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Filing: 1963-01-04
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Granted: 1966-07-05
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Expires: 1983-01-04
Abstract
No abstract record available.
Inventors
- 👤 Hoffman Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:35
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/183; G01C21/166; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
IN A STABLE PLATFORM HAVING MOUNTED THEREON A PLURALITY OF GYROS SENSING DEFLECTION OF SAID PLATFORM ABOUT RESPECTIVE AXES OF SAID PLATFORM AND MEANS TO MAINTAIN SAID PLATFORM ALIGNED WITH SAID GYROS, THE IMPROVEMENT COMPRISING: RESPECTIVE ANGULAR ACCELEROMETERS MOUNTED ON SAID PLATFORM TO SENSE ANGULAR ACCELERATION OF SAID PLATFORM ABOUT SAID AXES OF SAID PLATFORM AND GENERATE RESPECTIVE OUTPUT SIGNALS; AND MEANS, RESPONSIVE TO/ THE OUTPUT SIGNALS OF EACH OF SAID ANGULAR ACCELEROMETERS, TO APPLY TO SAID RESPECTIVE ONES OF SAID GYROS TORQUES HAVING MAGNITUDES PROPORTIONAL TO THE DOUBLE INTEGRALS OF ANGULAR ACCELERATIONS SENSED BY SAID ACCELEROMETERS IN DIRECTIONS TO CAUSE SAID GYROS TO PRECESS ABOUT SAID AXES IN THE DIRECTIONS OPPOSITE THOSE IN WHICH SAID PLATFORM HAS ROTATED AS A RESULT OF SAID ANGULAR ACCELERATIONS.
References Cited (Backward Citations)
US3057211A
Cited
US3075393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |