Patent US3089332A successfully refreshed from Google Patents.
US3089332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absolute vibration measuring instrument
Assignee: Arthur D Little Inc
•
Filing: 1959-11-18
•
Granted: 1963-05-14
•
Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Daniel F Comstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:52
CPC Classifications
G; G01; G01H; G01H1/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
IN AN INSTRUMENT ADAPTED TO MEASURE THE AMPLITUDE OF VIBRATION OF AN OBJECT, THE COMBINATION OF A CAPACITANCE PROBE, MEANS CHARGING THE CAPACITOR COMPRISING SAID PROBE AND SAID OBJECT WITH A CHARGE INDEPENDENT OF THE CAPACITANCE OF SAID CAPACITOR, MEANS ELIMINATING STRAY CAPACITANCE BETWEEN SAID PROBE AND OBJECT, AND MEANS MEASURING THE VOLTAGE BETWEEN SAID OBJECT AND SAID PROBE, SAID CHARGING MEANS INCLUDING A SECOND CAPACITOR, MEANS FOR CHARGING SAID SECOND CAPACITOR TO A GIVEN VOLTAGE, AND MEANS FOR PERIODICALLY TRANSFERRING THE CHARGE ON SAID SECOND CAPACITOR TO SAID CAPACITOR COMPRISING SAID PROBE AND OBJECT.
References Cited (Backward Citations)
US2599528A
Cited
US2507324A
Cited
US2661622A
Cited
US2623996A
Cited
US2764020A
Cited
US2802178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |