US3364368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezo-electric transducer
Assignee: MESSRS KISTLER INSTRUMENT AG
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Filing: 1964-11-17
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Granted: 1968-01-16
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Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Sonderegger Hans Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:49
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PIEZO ELECTRIC TRANSDUCER, A CRYSTAL ARRANGEMENT, A CUP-SHAPED TUBULAR SPRING UNDER AXIAL PRECOMPRESSION, SAID CRYSTAL ARRANGEMENT BEING LOCATED IN SAID CUP-SHAPED TUBULAR SPRING AND RESTING AT ONE OF ITS ENDS AGAINST THE BOTTOM SURFACE OF THE CUP-SHAPED TUBULAR SPRING, SAID TRANSDUCER FURTHER INCLUDING A CASING FOR RECEIVING THE TUBULAR SPRING AND HAVING AN INTERNAL STATIONARY SHOULDER, THE CRHSTAL ARRANGEMENT BEING CHARACTERIZED IN THAT ITS REMAINING END ENGAGES DIRECTLY AGAINST THE INTERNAL STATIONARY SHOULDER OF THE TRANSDUCER CASING AND THE TUBULAR SPRING BEING PROVIDED WITH A WELDING FLANGE AT ITS OPEN END WHICH IS WELDED UNDER PRESTRESSING DIRECTLY TO THE INTERNAL STATIONARY SHOULDER OF THE TRANSDUCER CASING ADJACENT THAT PORTION ENGAGED BY THE CRYSTAL ARRANGEMENT.
Claim 2
Dependent Claim
115 words
A PIEZO ELECTRIC TRANSDUCER, A CRYSTAL ARRANGEMENT, A CUP-SHAPED TUBULAR SPRING UNDER AXIAL PRECOMPRESSION, SAID CRYSTAL ARRANGEMENT BEING LOCATED IN SAID CUP-SHAPED TUBULAR SPRING AND RESTING AT ONE OF ITS ENDS AGAINST THE BOTTOM SURFACE OF THE CUP-SHAPED TUBULAR SPRING, SAID TRANSDUCER FURTHER INCLUDING A CASING FOR RECEIVING THE TUBULAR SPRING AND HAVING AN INTERNAL STATIONARY SHOULDER, THE CRHSTAL ARRANGEMENT BEING CHARACTERIZED IN THAT ITS REMAINING END ENGAGES DIRECTLY AGAINST THE INTERNAL STATIONARY SHOULDER OF THE TRANSDUCER CASING AND THE TUBULAR SPRING BEING PROVIDED WITH A WELDING FLANGE AT ITS OPEN END WHICH IS WELDED UNDER PRESTRESSING DIRECTLY TO THE INTERNAL STATIONARY SHOULDER OF THE TRANSDUCER CASING ADJACENT THAT PORTION ENGAGED BY THE CRYSTAL ARRANGEMENT.
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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |