Patent US3229531A successfully refreshed from Google Patents.
US3229531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force balance accelerometer
Assignee: General Precision Inc
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Filing: 1962-09-18
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Granted: 1966-01-18
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Expires: 1982-09-18
Abstract
No abstract record available.
Inventors
- 👤 John C Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:46
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/12; G01P15/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A FORCE BALANCE ACCELEROMETER COMPRISING A COIL, AN ARMATURE EXTENDING THROUGH SAID COIL AND PIVOTALLY SUPPORTED AT THE CENTER THEREOF FOR PIVOTAL MOVEMENT ABOUT AN AXIS EXTENDING PERPENDICULARLY THROUGH THE AXIS OF SAID COIL, FIRST AND SECOND ELEMENTS OF PIEZORESISTIVE MATERIAL FIXED WITH RESPECT TO SAID COIL AND POSITIONED ON OPPOSITE SIDES OF ONE END OF SAID ARMATURE, THIRD AND FOURTH ELEMENTS OF PERZORESISTIVE MATERIAL FIXED WITH RESPECT TO SAID COIL AND POSITIONED ON OPPOSITE SIDES OF THE OTHER END OF SAID ARMATURE, SAID FIRST AND THIRD ELEMENTS BEING POSITIONED ON THE SAME SIDE OF SAID ARMATURE, AND UNBALANCING MASS ON ONE OF SAID ARMS OF SAID ARMATURE, SAID ELEMENTS BEING ELECTRICALLY CONNECTED IN SERIES WITH ONE ANOTHER, SAID COIL BEING ELECTRICALLY CONNECTED BETWEEN THE JUNCTURE OF SAID FIRST AND SECOND ELEMENTS AND THE JUNCTURE OF SAID THIRD AND FOURTH ELEMENTS, AND A SOURCE OF D.C. POWER CONNECTED ACROSS THE JUNCTURE OF SAID SECOND AND FOURTH ELEMENTS AND THE JUNCTURE OF SAID FIRST AND THIRD ELEMENTS.
Claim 2
Dependent Claim
166 words
A FORCE BALANCE ACCELEROMETER COMPRISING A COIL, AN ARMATURE EXTENDING THROUGH SAID COIL AND PIVOTALLY SUPPORTED AT THE CENTER THEREOF FOR PIVOTAL MOVEMENT ABOUT AN AXIS EXTENDING PERPENDICULARLY THROUGH THE AXIS OF SAID COIL, FIRST AND SECOND ELEMENTS OF PIEZORESISTIVE MATERIAL FIXED WITH RESPECT TO SAID COIL AND POSITIONED ON OPPOSITE SIDES OF ONE END OF SAID ARMATURE, THIRD AND FOURTH ELEMENTS OF PERZORESISTIVE MATERIAL FIXED WITH RESPECT TO SAID COIL AND POSITIONED ON OPPOSITE SIDES OF THE OTHER END OF SAID ARMATURE, SAID FIRST AND THIRD ELEMENTS BEING POSITIONED ON THE SAME SIDE OF SAID ARMATURE, AND UNBALANCING MASS ON ONE OF SAID ARMS OF SAID ARMATURE, SAID ELEMENTS BEING ELECTRICALLY CONNECTED IN SERIES WITH ONE ANOTHER, SAID COIL BEING ELECTRICALLY CONNECTED BETWEEN THE JUNCTURE OF SAID FIRST AND SECOND ELEMENTS AND THE JUNCTURE OF SAID THIRD AND FOURTH ELEMENTS, AND A SOURCE OF D.C. POWER CONNECTED ACROSS THE JUNCTURE OF SAID SECOND AND FOURTH ELEMENTS AND THE JUNCTURE OF SAID FIRST AND THIRD ELEMENTS.
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |