Patent US2594320A successfully refreshed from Google Patents.
Patent US3293575A successfully refreshed from Google Patents.
US3293575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical filter having means to reduce harmonic transmission
Assignee: Siemens and Halske AG
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Filing: 1962-08-27
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Granted: 1966-12-20
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Albsmeier Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:16
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN ELECTROMECHANICAL FILTER HAVING AT LEAST ONE ELONGATED METALLIC RESONATOR VIBRATING IN LONGITUDINAL DIRECTION, SAID RESONATOR BEING PROVIDED AT EACH OF ITS LONGITUDINAL ENDS WITH AN ELECTROSTRICTIVE EXCITATION ELEMENT IN THE FORM OF A THIN DISK METALIZED ON THE SIDE THEREOF WHICH FACES AWAY FROM THE METALLIC RESONATOR TO PASS A FUNDAMENTAL FREQUENCY, A FURTHER PAIR OF DISKS OF ELECTROSTRICTIVE MATERIAL ADAPTED TO REDUCE HARMONICS OF SAID FUNDAMENTAL FREQUENCY, EACH OF SAID LAST MENTIONED DISKS BEING DISPOSED CONTIGUOUS TO THE METALIZED COATING OF A CORRESPONDING FIRST MENTIONED DISK, THE FREE END SURFACE OF EACH OF SAID SECOND MENTIONED DISKS BEING PROVIDED AT ITS FREE END SURFACE WITH A METALIZED COATING SERVING AS AN ELECTRICAL CONTACT FOR EFFECTING ELECTRICAL CONNECTION THERETO.
Claim 2
Dependent Claim
120 words
AN ELECTROMECHANICAL FILTER HAVING AT LEAST ONE ELONGATED METALLIC RESONATOR VIBRATING IN LONGITUDINAL DIRECTION, SAID RESONATOR BEING PROVIDED AT EACH OF ITS LONGITUDINAL ENDS WITH AN ELECTROSTRICTIVE EXCITATION ELEMENT IN THE FORM OF A THIN DISK METALIZED ON THE SIDE THEREOF WHICH FACES AWAY FROM THE METALLIC RESONATOR TO PASS A FUNDAMENTAL FREQUENCY, A FURTHER PAIR OF DISKS OF ELECTROSTRICTIVE MATERIAL ADAPTED TO REDUCE HARMONICS OF SAID FUNDAMENTAL FREQUENCY, EACH OF SAID LAST MENTIONED DISKS BEING DISPOSED CONTIGUOUS TO THE METALIZED COATING OF A CORRESPONDING FIRST MENTIONED DISK, THE FREE END SURFACE OF EACH OF SAID SECOND MENTIONED DISKS BEING PROVIDED AT ITS FREE END SURFACE WITH A METALIZED COATING SERVING AS AN ELECTRICAL CONTACT FOR EFFECTING ELECTRICAL CONNECTION THERETO.
References Cited (Backward Citations)
US2859415A
Cited
US2759102A
Cited
US2861247A
Cited
US3015789A
Cited
US3105208A
Cited
US2982926A
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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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |