US3091972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerometer
Assignee: California Institute Research Foundation
•
Filing: 1961-01-24
•
Granted: 1963-06-04
•
Expires: 1981-01-24
Abstract
No abstract record available.
Inventors
- 👤 Alan R Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:49
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/13; G01P15/132
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
AN ACCELEROMETER, COMPRISING: AN ACCELERATION SENSING UNIT INCLUDING, A BAR, A PAIR OF ARMS EXTENDING RADIALLY FROM SAID BAR IN A COMMON PLANE, TORSION ELEMENTS EXTENDING COAXIALLY IN OPPOSITE DIRECTION FROM SAID ARMS AND IN PARALLELISM WITH THE AXIS OF SAID BAR, AND SUPPORT MEANS FOR SAID TORSION ELEMENTS JOINED THERETO AT THEIR DISTAL ENDS AND APPLYING TENSION THERETO, WHEREBY SAID BAR FORMS A SUSPENDED PENDULANT MASS ADAPTED TO MOVE ABOUT THE COMMON AXIS OF SAID TORSION ELEMENTS IN RESPONSE TO ACCELERATION FORCES APPLIED IN A DIRECTION PERPENDICULAR TO THE COMMON PLANE DEFINED BY THE AXES OF SAID TORSION ELEMENTS AND SAID BAR, SAID SENSING UNIT BEING FORMED OF FUSED QUARTZ AND THE PARTS THEREOF BEING INTEGRALLY CONNECTED, AND A CONDUCTIVE COATING ON SAID
References Cited (Backward Citations)
US2130648A
Cited
US2367126A
Cited
US2542018A
Cited
US2873103A
Cited
US2946226A
Cited
US2947176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |