Patent US3349259A successfully refreshed from Google Patents.
US3349259A
Expired / Lapsed
US
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Piezoelectric pressure transducer
Assignee: Kistler Instrument Corp
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Filing: 1965-05-27
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Granted: 1967-10-24
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Expires: 1985-05-27
Abstract
No abstract record available.
Inventors
- 👤 Walter P Kistler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:48
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PIEZOELECTRIC TRANSDUCER COMPRISING A FIRST PIEZOELECTRIC MEANS INCLUDING AT LEAST ONE PIEZOELECTRIC WAFER, SECOND PIEZOELECTRIC MEANS INCLUDING A PLURALITY OF PIEZOELECTRIC WAFERS, SAID FIRST PIEZOELECTRIC MEANS PRODUCING A SMALLER OUTPUT SIGNAL THAN SAID SECOND PIEZOELECTRIC MEANS FOR A GIVEN FORCE, A SEISMIC MASS BETWEEN SAID FIRST AND SECOND PIEZOELECTRIC MEANS, A BASE ADJACENT SAID FIRST PIEZOELECTRIC MEANS, AND A PRELOADING SLEEVE ACTING BETWEEN SAID BASE AND SAID SECOND PIEZOELECTRIC MEANS FOR URGING BOTH SAID PIEZOELECTRIC MEANS AND SAID SEISMIC MEANS TOWARD SAID BASE.
Claim 2
Dependent Claim
84 words
A PIEZOELECTRIC TRANSDUCER COMPRISING A FIRST PIEZOELECTRIC MEANS INCLUDING AT LEAST ONE PIEZOELECTRIC WAFER, SECOND PIEZOELECTRIC MEANS INCLUDING A PLURALITY OF PIEZOELECTRIC WAFERS, SAID FIRST PIEZOELECTRIC MEANS PRODUCING A SMALLER OUTPUT SIGNAL THAN SAID SECOND PIEZOELECTRIC MEANS FOR A GIVEN FORCE, A SEISMIC MASS BETWEEN SAID FIRST AND SECOND PIEZOELECTRIC MEANS, A BASE ADJACENT SAID FIRST PIEZOELECTRIC MEANS, AND A PRELOADING SLEEVE ACTING BETWEEN SAID BASE AND SAID SECOND PIEZOELECTRIC MEANS FOR URGING BOTH SAID PIEZOELECTRIC MEANS AND SAID SEISMIC MEANS TOWARD SAID BASE.
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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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |