Patent US3177381A successfully refreshed from Google Patents.
US3177381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for ultrasonic wall thickness measurements
Assignee: Shell USA Inc
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Filing: 1963-03-11
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Granted: 1965-04-06
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Bosselaar Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:29
CPC Classifications
G; G01; G01B; G01B17/00; G01B17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A DEVICE FOR TESTING MATERIAL WITH THE AID OF ULTRASONIC VIBRATIONS, IN PARTICULAR, FOR MEASURING THE THICKNESS OF THE MATERIAL BY MEANS OF A GENERATOR/DETECTOR COMPRISING: A METAL BRIDGING PIECE EXTENDING BETWEEN SAID GENERATOR/DETECTOR AND SAID MATERIAL TO BE TESTED FOR TRANSMITTING VIBRATIONS THEREBETWEEN; SAID BRIDGING PIECE BEING CYLINDRICAL IN SHAPE WITH THE CYLINDRICAL WALL OF THE BRIDGING PIECE BEING PROVIDED WITH ONE OR MORE INCISIONS HAVING AN ACUTE ROOT ANGLE, THE DIAMETER OF SAID BRIDGING PIECE AT THE ROOT OF SAID INCISIONS BEING AT LEAST EQUAL TO THE DIAMETER OF THE CRYSTAL OF SAID GENERATOR/ DETECTOR; SAID CYLINDRICAL BRIDGING PIECE HAVING ITS END NEAREST TO SAID MATERIAL TO BE TESTED FORMED BY A CONE WHICH IS TRUNCATED PARALLEL TO ITS BASE, THE AXIS OF SAID CONE COINCIDING WITH THE AXIS OF SAID BRIDGING PIECE AND THE UPPER PLANE OF SAID CONE HAVING AT MOST THE SAME DIAMETER AS THE CRYSTAL OF SAID GENERATOR/DETECTOR.
Claim 2
Independent Claim
154 words
A DEVICE FOR TESTING MATERIAL WITH THE AID OF ULTRASONIC VIBRATIONS, IN PARTICULAR, FOR MEASURING THE THICKNESS OF THE MATERIAL BY MEANS OF A GENERATOR/DETECTOR COMPRISING: A METAL BRIDGING PIECE EXTENDING BETWEEN SAID GENERATOR/DETECTOR AND SAID MATERIAL TO BE TESTED FOR TRANSMITTING VIBRATIONS THEREBETWEEN; SAID BRIDGING PIECE BEING CYLINDRICAL IN SHAPE WITH THE CYLINDRICAL WALL OF THE BRIDGING PIECE BEING PROVIDED WITH ONE OR MORE INCISIONS HAVING AN ACUTE ROOT ANGLE, THE DIAMETER OF SAID BRIDGING PIECE AT THE ROOT OF SAID INCISIONS BEING AT LEAST EQUAL TO THE DIAMETER OF THE CRYSTAL OF SAID GENERATOR/ DETECTOR; SAID CYLINDRICAL BRIDGING PIECE HAVING ITS END NEAREST TO SAID MATERIAL TO BE TESTED FORMED BY A CONE WHICH IS TRUNCATED PARALLEL TO ITS BASE, THE AXIS OF SAID CONE COINCIDING WITH THE AXIS OF SAID BRIDGING PIECE AND THE UPPER PLANE OF SAID CONE HAVING AT MOST THE SAME DIAMETER AS THE CRYSTAL OF SAID GENERATOR/DETECTOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |