US3233450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic flaw detection system
Assignee: Individual
•
Filing: 1961-11-08
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Granted: 1966-02-08
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Expires: 1981-11-08
Abstract
No abstract record available.
Inventors
- 👤 William J Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:20
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/07; G01N29/22; G01N29/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A SYSTEM FOR DETECTING INHOMOGENEITIES IN A SPECIMEN STRUCTURE, MEANS FOR TRANSMITTING ACOUSTIC ENERGY INTO THE STRUCTURE WITH SUFFICIENT INTENSITY TO INDUCE TEMPERATURE GRADIENTS IN INHOMOGENEITIES THEREIN TO PRODUCE IN TURN DETECTABLE ACOUSTICAL VELOCITY GRADIENTS IN THE INHOMOGENEITIES, AND MEANS FOR TRANSMITTING AN EXAMINING BEAM INTO THE INHOMOGENEITIES OF THE STRUCTURE AND FOR DETECTING THE EXAMINING BEAM EMANATING FROM THE STRUCTURE WHICH HAS BEEN MODIFIED BY SAID INDUCED ACOUSTICAL VELOCITY GRADIENTS.
Claim 2
Dependent Claim
72 words
IN A SYSTEM FOR DETECTING INHOMOGENEITIES IN A SPECIMEN STRUCTURE, MEANS FOR TRANSMITTING ACOUSTIC ENERGY INTO THE STRUCTURE WITH SUFFICIENT INTENSITY TO INDUCE TEMPERATURE GRADIENTS IN INHOMOGENEITIES THEREIN TO PRODUCE IN TURN DETECTABLE ACOUSTICAL VELOCITY GRADIENTS IN THE INHOMOGENEITIES, AND MEANS FOR TRANSMITTING AN EXAMINING BEAM INTO THE INHOMOGENEITIES OF THE STRUCTURE AND FOR DETECTING THE EXAMINING BEAM EMANATING FROM THE STRUCTURE WHICH HAS BEEN MODIFIED BY SAID INDUCED ACOUSTICAL VELOCITY GRADIENTS.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |