US3076903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric transducer
Assignee: Gulton Industries Inc
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Filing: 1957-12-20
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Granted: 1963-02-05
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Expires: 1977-12-20
Abstract
No abstract record available.
Inventors
- 👤 Daniel S Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
G; G01; G01H; G01H11/00; G01H11/06; G01H11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A PIEZOELECTRIC TRANSDUCER COMPRISING A PAIR OF PARALLEL PLATES HAVING SPACED APART OPPOSED FACES, MEANS FOR RELATIVELY MOVING THE PLATES TOWARD AND AWAY FROM EACH OTHER, AND A PIEZOELECTRIC CERAMIC ELEMENT INCLUDING RANDOMLY ORIENTED CRYSTALS AND HAVING ELECTRODES FUSED ON OPPOSITE FACES THEREOF AND INTERPOSED BETWEEN THE PLATES WITH THE ELECTRODES ENGAGING THE OPPOSED FACES OF THE PLATES, SAID PIEZOELECTRIC CERAMIC ELEMENT BEING POLARIZED IN A DIRECTION BETWEEN THE OPPOSED FACES OF THE PLATES FOR ORIENTING SOME OF THE CRYSTALS THEREOF IN THAT DIRECTION, THE ELECTRODED FACES OF SAID PIEZOELECTRIC CERAMIC ELEMENT AND THE OPPOSED FACES OF SAID PLATES BEING NONFLAT WITH RESPECT TO EACH OTHER SO THAT THE ELECTRODED FACES OF THE ELEMENT ENGAGE THE FACES OF THE PLATES AT LATERALLY SPACED AREAS WITHIN THE FACE AREAS OF THE ELEMENT, WHEREBY THE PIEZOELECTRIC CERAMIC ELEMENT IS INTERIORLY SUBJECTED, WHEN THE PLATES ARE RELATIVELY MOVED TOWARD EACH OTHER, TO BENDING, SHEAR AND TORSION FORCES AS WELL AS COMPRESSION FORCES FOR PRODUCING AN APPRECIABLY LARGER CHARGE RELEASE PER UNIT OF FORCE THAN CAN BE OBTAINED BY COMPRESSION FORCES ONLY.
Claim 2
Dependent Claim
178 words
A PIEZOELECTRIC TRANSDUCER COMPRISING A PAIR OF PARALLEL PLATES HAVING SPACED APART OPPOSED FACES, MEANS FOR RELATIVELY MOVING THE PLATES TOWARD AND AWAY FROM EACH OTHER, AND A PIEZOELECTRIC CERAMIC ELEMENT INCLUDING RANDOMLY ORIENTED CRYSTALS AND HAVING ELECTRODES FUSED ON OPPOSITE FACES THEREOF AND INTERPOSED BETWEEN THE PLATES WITH THE ELECTRODES ENGAGING THE OPPOSED FACES OF THE PLATES, SAID PIEZOELECTRIC CERAMIC ELEMENT BEING POLARIZED IN A DIRECTION BETWEEN THE OPPOSED FACES OF THE PLATES FOR ORIENTING SOME OF THE CRYSTALS THEREOF IN THAT DIRECTION, THE ELECTRODED FACES OF SAID PIEZOELECTRIC CERAMIC ELEMENT AND THE OPPOSED FACES OF SAID PLATES BEING NONFLAT WITH RESPECT TO EACH OTHER SO THAT THE ELECTRODED FACES OF THE ELEMENT ENGAGE THE FACES OF THE PLATES AT LATERALLY SPACED AREAS WITHIN THE FACE AREAS OF THE ELEMENT, WHEREBY THE PIEZOELECTRIC CERAMIC ELEMENT IS INTERIORLY SUBJECTED, WHEN THE PLATES ARE RELATIVELY MOVED TOWARD EACH OTHER, TO BENDING, SHEAR AND TORSION FORCES AS WELL AS COMPRESSION FORCES FOR PRODUCING AN APPRECIABLY LARGER CHARGE RELEASE PER UNIT OF FORCE THAN CAN BE OBTAINED BY COMPRESSION FORCES ONLY.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |