Accelerometer
Abstract
Abstract AN ACCELEROMETER COMPRISING A VESSEL FILLED WITH VISCOUS LIQUID WHEREIN IS IMMERSED A CANTILEVER BEAM VIBRATOR BETWEEN A PAIR OF DAMPING WALLS CLOSE TO AND ON BOTH SIDES OF THE VIBRATOR. SAID DAMPING WALLS ARE BI-METAL STRIPS WHICH BEND IN A DIRECTION TO REDUCE THE SPACE BETWEEN SAID PAIR OF DAMPING WALLS WHEN THE TEMPERATURE OF SAID LIQUID IS RAISED, THEREBY COMPENSATING FOR TEMPERATURE CHANGE OF THE LIQUID AND SAID WALLS HAVE A STOP ELEMENT PROVIDED AT AN INTERMEDIATE POINT BETWEEN THE FIXED AND FREE ENDS THEREOF. DESIRABLY, SEVERAL VIBRATORS MOUNTED AT RIGHT ANGLE TO EACH OTHER ARE HOUSED IN ONE VESSEL. TO COMPENSATE FOR CHANGE IN PRESSURE OF SAID LIQUID, A COMPRESSIBLE AND EXPANSIBLE FLUID CHAMBER IS PROVIDED IN THE VESSEL AND SUBJECTED TO PRESSURE OF THE LIQUID THEREIN.
Inventors
- 👤 Koji Tsukada
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |