US3307393A
Expired / Lapsed
US
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Stress measuring device
Assignee: Ingersoll Rand Co
•
Filing: 1963-12-23
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Granted: 1967-03-07
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:28
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/25; G01L1/255; B; B25; B25B; B25B23/00; B25B23/14; G01L5/00; G01L5/24; G01N; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02827
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
A DEVICE FOR MEASURING THE STRESS IN A FASTENER, COMPRISING: A SOURCE OF ALTERNATING ELECTRICAL ENERGY; MEANS CONNECTED TO SAID SOURCE FOR TRANSMITTING MECHANICAL VIBRATIONS IN RESPONSE TO ELECTRICAL ENERGY FROM SAID SOURCE; SAID VIBRATION TRANSMITTING MEANS BEING CONNECTED TO ONE END OF SAID FASTENER FOR TRANSMITTING MECHANICAL VIBRATIONS LONGITUDINALLY IN SAID FASTENER FROM SAID ONE END THEREOF; MEANS CONNECTED TO SAID VIBRATION TRANSMITTING MEANS FOR PROVIDING A SIGNAL PROPORTIONAL TO THE FORCE OF THE MECHANICAL VIBRATIONS TRANSMITTED IN SAID FASTENER BY SAID VIBRATION TRANSMITTING MEANS;
References Cited (Backward Citations)
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US2600029A
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US3101608A
Cited
AT211756B
Cited
US3224253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |