US3299694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for detecting flaws using ultrasonic helical waves
Assignee: Individual
•
Filing: 1963-03-26
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Granted: 1967-01-24
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Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 Iii Ben Wade Oakes Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:09
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/28; B; B06; B06B; B06B3/00; B23; B23Q; B23Q17/00; B23Q17/09; G01N29/04; G01N29/07; G01N2291/00; G01N2291/04; G01N2291/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A METHOD FOR INVESTIGATING FLAWS IN A MEMBER, INTRODUCING AT LEAST ONE ULTRASONIC WAVE TRAIN AT A PREDETERMINED GROUP VELOCITY INTO THE MEMBER, A PORTION OF THE WAVE TRAIN BEING DEFLECTED BY A FLAW TO PROVIDE AT LEAST TWO DEFLECTED WAVE TRAINS TRAVELLING IN DIRECTIONS DIFFERING FROM THE DIRECTION IN WHICH THE ULTRASONIC WAVE TRAIN IS INTRODUCED INTO THE MEMBER, MEASURING THE DIFFERENCE IN TIME OF TRAVEL OF THE TWO DEFLECTED WAVE TRAINS TO PREDETERMINED POINTS, AND DETERMINING AT LEAST ONE OF THE COORDINATES OF THE FLAW UTILIZING SAID DIFFERENCES IN TIME.
Claim 2
Dependent Claim
93 words
IN A METHOD FOR INVESTIGATING FLAWS IN A MEMBER, INTRODUCING AT LEAST ONE ULTRASONIC WAVE TRAIN AT A PREDETERMINED GROUP VELOCITY INTO THE MEMBER, A PORTION OF THE WAVE TRAIN BEING DEFLECTED BY A FLAW TO PROVIDE AT LEAST TWO DEFLECTED WAVE TRAINS TRAVELLING IN DIRECTIONS DIFFERING FROM THE DIRECTION IN WHICH THE ULTRASONIC WAVE TRAIN IS INTRODUCED INTO THE MEMBER, MEASURING THE DIFFERENCE IN TIME OF TRAVEL OF THE TWO DEFLECTED WAVE TRAINS TO PREDETERMINED POINTS, AND DETERMINING AT LEAST ONE OF THE COORDINATES OF THE FLAW UTILIZING SAID DIFFERENCES IN TIME.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |