Patent US3384767A successfully refreshed from Google Patents.
US3384767A
Expired / Lapsed
US
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Ultrasonic transducer
Assignee: SRI International Inc
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Filing: 1964-05-11
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Granted: 1968-05-21
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 James S Arnold
- 👤 Aito Palo
- 👤 Salmon Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622; G; G01; G01N; G01N29/00; G01N29/22; G01N29/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN AN ELECTROMECHANICAL TRANSDUCER OF THE TYPE HAVING A SOLID CYLINDRICL SHAPE AND HAVING ELECTRODES DISPOSED ON OPPOSITE FLAT SURFACES THEREOF FOR ENABLING EXCITATION IN A RADIAL VIBRATION MODE, THE IMPROVEMENT COMPRISING A PLURALITY OF ELECTRODES DISPOSED ON OPPOSITE SURFACES OF SAID TRANSDUCER, SAID ELECTRODES BEING CONCENTRICALLY DISPOSED AND COVERING ALL OF THE OPPOSED SURFACES OF SAID TRANSDUCER EXCEPT PREDETERMINED NODAL CIRCULAR REGIONS ON SAID OPPOSITE SURFACES, MEANS CONNECTING ALTERNATE ONES OF SAID ELECTRODES WHICH ARE NOT OPPOSITE ONE ANOTHER ON SAID OPPOSED SURFACES TOGETHER, MEANS FOR CONNECTING THE REMAINING ONES OF SAID ELECTRODES ON OPPOSED SURFACES OF SAID SURFACES, AND MEANS FOR APPLYING A DRIVING SIGNAL TO SAID CONNECTED ELECTRODES.
Claim 2
Dependent Claim
111 words
IN AN ELECTROMECHANICAL TRANSDUCER OF THE TYPE HAVING A SOLID CYLINDRICL SHAPE AND HAVING ELECTRODES DISPOSED ON OPPOSITE FLAT SURFACES THEREOF FOR ENABLING EXCITATION IN A RADIAL VIBRATION MODE, THE IMPROVEMENT COMPRISING A PLURALITY OF ELECTRODES DISPOSED ON OPPOSITE SURFACES OF SAID TRANSDUCER, SAID ELECTRODES BEING CONCENTRICALLY DISPOSED AND COVERING ALL OF THE OPPOSED SURFACES OF SAID TRANSDUCER EXCEPT PREDETERMINED NODAL CIRCULAR REGIONS ON SAID OPPOSITE SURFACES, MEANS CONNECTING ALTERNATE ONES OF SAID ELECTRODES WHICH ARE NOT OPPOSITE ONE ANOTHER ON SAID OPPOSED SURFACES TOGETHER, MEANS FOR CONNECTING THE REMAINING ONES OF SAID ELECTRODES ON OPPOSED SURFACES OF SAID SURFACES, AND MEANS FOR APPLYING A DRIVING SIGNAL TO SAID CONNECTED ELECTRODES.
References Cited (Backward Citations)
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US3148290A
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US2943278A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |