US3608361A
Expired / Lapsed
US
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Ultrasonic pulse echo flaw detector employing a spatial scale arrangement on the screen of an oscilloscope
Assignee: Individual
•
Filing: 1968-10-11
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Granted: 1971-09-28
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Expires: 1988-10-11
Abstract
Abstract AN ULTRASONIC METHOD OF DETERMINING FLAW SIZE AND LOCATION IS DISCLOSED. IN THE METHOD A GRAPH ARRANGEMENT IS LOCATED IN FRONT OF THE SCREEN OF AN OSCILLOSCOPE OF A PULSE ECHO ULTRASONIC TESTING APPARATUS. BY USE OF THE GRAPH THE LOCATION AND EQUIVALENT FLAW SIZE OF A DEFECTIVE SPOT IN A WELDING SEAM OR OTHER SPECIMEN IS DETERMINED.
Inventors
- 👤 Joseph Krautkramer
- 👤 Herbert Krautkramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:30
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/44; G01N29/4463; G01N29/04; G01N29/06; G01N29/0609; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/0289
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |