US2751783A
Expired / Lapsed
US
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Apparatus for coupling ultrasonic waves
Assignee: Electrocircuits Inc
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Filing: 1952-01-25
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Granted: 1956-06-26
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Expires: 1972-01-25
Abstract
No abstract record available.
Inventors
- 👤 Donald C Erdman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:05
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
APPARATUS FOR ULTRASONIC FLAW DETECTION COMPRISING A SOURCE OF ULTRASONIC WAVES, MEANS PRODUCING A LIQUID JET FLOWING BETWEEN THE SOURCE AND A MEMBER TO BE TESTED TO IMPINGE ON THE MEMBER, MEANS ENERGIZING THE SOURCE TO TRANSMIT ULTRASONIC VIBRATIONS FOR PROPAGATION INTO THE MEMBER THROUGH THE LIQUID JET WHEREBY WAVES ARE REFLECTED FROM THE MEMBER AND TRAVEL IN THE OPPOSITE DIREACTION IN THE JET TO IMPINGE ON THE SOURCE.
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) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |