Patent US3335602A successfully refreshed from Google Patents.
US3335602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for identifying bond defects
Assignee: SRI International Inc
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Filing: 1964-05-13
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Granted: 1967-08-15
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 John G Martner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:23
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN AN APPARATUS FOR TESTING THE QUALITY OF AN ADHESIVE BOND IN STRUCTURAL MATERIAL BY APPLYING ELECTROMECHANICAL TRANSDUCER MEANS TO AN OUTSIDE SURFACE OF SAID MATERIAL WHICH IS OPPOSITE SAID BOND, AND WHEREIN SAID TRANSDUCER MEANS IS DRIVEN OVER A PREDETERMINED FREQUENCY RANGE FROM AN OSCILLATION GENERATOR WHICH FREQUENCY RANGE INCLUDES TWO RESONANT FREQUENCIES OF SAID TRANSDUCER, AND AN OUTPUT DERIVED FROM SAID TRANSDUCER MEANS IS DISPLAYED, THE IMPROVEMENT COMPRISING MEANS FOR DERIVING FROM THE OUTPUT OF SAID TRANSDUCER MEANS A FIRST AND A SECOND SIGNAL RESPECTIVELY HAVING AMPLITUDES REPRESENTATIVE OF THE AMPLITUDE OF A FIRST AND SECOND RESONANT PEAK IN SAID TRANSDUCER MEANS OUTPUT, MEANS FOR COMBINING SAID FIRST AND SECOND SIGNALS TO REDUCE RESULTANT SIGNALS AND MEANS FOR INDICATING ING THE THE QUALITY OF SAID BOND FROM SAID RESULTANT SIGNALS.
Claim 2
Dependent Claim
132 words
IN AN APPARATUS FOR TESTING THE QUALITY OF AN ADHESIVE BOND IN STRUCTURAL MATERIAL BY APPLYING ELECTROMECHANICAL TRANSDUCER MEANS TO AN OUTSIDE SURFACE OF SAID MATERIAL WHICH IS OPPOSITE SAID BOND, AND WHEREIN SAID TRANSDUCER MEANS IS DRIVEN OVER A PREDETERMINED FREQUENCY RANGE FROM AN OSCILLATION GENERATOR WHICH FREQUENCY RANGE INCLUDES TWO RESONANT FREQUENCIES OF SAID TRANSDUCER, AND AN OUTPUT DERIVED FROM SAID TRANSDUCER MEANS IS DISPLAYED, THE IMPROVEMENT COMPRISING MEANS FOR DERIVING FROM THE OUTPUT OF SAID TRANSDUCER MEANS A FIRST AND A SECOND SIGNAL RESPECTIVELY HAVING AMPLITUDES REPRESENTATIVE OF THE AMPLITUDE OF A FIRST AND SECOND RESONANT PEAK IN SAID TRANSDUCER MEANS OUTPUT, MEANS FOR COMBINING SAID FIRST AND SECOND SIGNALS TO REDUCE RESULTANT SIGNALS AND MEANS FOR INDICATING ING THE THE QUALITY OF SAID BOND FROM SAID RESULTANT SIGNALS.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |