US2756353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bender-mode piezoelectric device and method of making the same
Assignee: General Electric Co
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Filing: 1950-04-10
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Granted: 1956-07-24
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Expires: 1970-04-10
Abstract
No abstract record available.
Inventors
- 👤 Richard W Samsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:59
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/01; H10N30/04; H10N30/045; H04; H04R; H04R17/00; H10N30/20; H10N30/204; H10N30/2041; H10N30/2042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF PRODUCING A BENDER TYPE PIEZOELECTRIC TRANSDUCER WHICH COMPRISES, COATING EACH OF THE OPPOSING MAJOR SURFACES OF A THIN SLAB OF PIEZOELECTRICALLY SENSITIZABLE CERAMIC MATERIAL WITH A LAYER OF CONDUCTIVE METAL TO FORM A PAIR OF OPPOSING ELECTRODES ON THE SLAB, BENDING THE SLAB TO AN EXTENT LESS THAN ITS ELASTIC LIMIT ALONG A MAJOR DIMENSION THEREOF, AND PIEZOELECTRICALLY SENSITIZING THE SLAB BY APPLYING A POLARIZING ELECTRICAL POTENTIAL BETWEEN THE PAIR OF ELECTRODES WHILE THE SLAB IS MAINTAINED IN SAID BENT STATE.
Claim 2
Independent Claim
84 words
THE METHOD OF PRODUCING A BENDER TYPE PIEZOELECTRIC TRANSDUCER WHICH COMPRISES, COATING EACH OF THE OPPOSING MAJOR SURFACES OF A THIN SLAB OF PIEZOELECTRICALLY SENSITIZABLE CERAMIC MATERIAL WITH A LAYER OF CONDUCTIVE METAL TO FORM A PAIR OF OPPOSING ELECTRODES ON THE SLAB, BENDING THE SLAB TO AN EXTENT LESS THAN ITS ELASTIC LIMIT ALONG A MAJOR DIMENSION THEREOF, AND PIEZOELECTRICALLY SENSITIZING THE SLAB BY APPLYING A POLARIZING ELECTRICAL POTENTIAL BETWEEN THE PAIR OF ELECTRODES WHILE THE SLAB IS MAINTAINED IN SAID BENT STATE.
References Cited (Backward Citations)
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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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |