Patent US3143891A successfully refreshed from Google Patents.
US3143891A
Expired / Lapsed
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Angular accelerometer
Assignee: Ambac International Corp
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Filing: 1961-11-06
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Granted: 1964-08-11
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Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Alexander M Voutsas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:46
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/097
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN AN ANGULAR ACCELEROMETER, A FRAME, A MASS SUPPORTED IN SAID FRAME FOR ROTATION ABOUT AN AXIS WITH RESPECT TO SAID FRAME, A MEMBER CONNECTED BETWEEN SAID MASS AND SAID FRAME AND ADAPTED TO BE TWISTED DURING RELATIVE DISPLACEMENT BETWEEN SAID MASS AND SAID FRAME THEREBY TO VARY SUBSTANTIALLY THE NATURAL FREQUENCY OF VIBRATION OF SAID MEMBER, MEANS FOR MAINTAINING SAID MEMBER IN VIBRATION AT ITS NATURAL FREQUENCY, AND MEANS RESPONSIVE TO VIBRATION OF SAID MEMBER TO DERIVE INDICATIONS OF CHANGES IN SAID NATURAL FREQUENCY.
Claim 2
Dependent Claim
85 words
IN AN ANGULAR ACCELEROMETER, A FRAME, A MASS SUPPORTED IN SAID FRAME FOR ROTATION ABOUT AN AXIS WITH RESPECT TO SAID FRAME, A MEMBER CONNECTED BETWEEN SAID MASS AND SAID FRAME AND ADAPTED TO BE TWISTED DURING RELATIVE DISPLACEMENT BETWEEN SAID MASS AND SAID FRAME THEREBY TO VARY SUBSTANTIALLY THE NATURAL FREQUENCY OF VIBRATION OF SAID MEMBER, MEANS FOR MAINTAINING SAID MEMBER IN VIBRATION AT ITS NATURAL FREQUENCY, AND MEANS RESPONSIVE TO VIBRATION OF SAID MEMBER TO DERIVE INDICATIONS OF CHANGES IN SAID NATURAL FREQUENCY.
References Cited (Backward Citations)
US2753173A
Cited
US2968950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |