Patent US3245012A successfully refreshed from Google Patents.
US3245012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary electromechanical filter vibrator having individual resonant elements coupled together by mechanically strong and electrically weak bridges
Assignee: Siemens and Halske AG
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Filing: 1963-01-31
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Granted: 1966-04-05
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Expires: 1983-01-31
Abstract
No abstract record available.
Inventors
- 👤 Schofer Franz Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:27
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN ELECTROMECHANICAL FILTER COMPRISING AT LEAST TWO ELONGATED PLANAR ELEMENTS FORMING RESONATORS WHICH ARE CONNECTED OVER MECHANICAL COUPLING BRIDGES INTO A UNITARY STRUCTURE, SUCH INDIVIDUAL COUPLING BRIDGE BEING SUBDIVIDED INTO THREE REGIONS, THE CENTRAL REGION OF WHICH HAS A LARGER CROSS-SECTIONAL AREA THAN THE ADJACENT REGIONS BORDERING THE RESONATORS CONNECTED THEREBY, THE LENGTH OF THE CENTRAL REGION, IN THE DIRECTION OF THE LONGITUDINAL AXIS OF THE FILTER, BEING CONSIDERABLY GREATER THAN THE CORRESPONSING LENGTH OF SAID BORDERING REGIONS, THE DIMENSIONS OF THE INDIVIDUAL CENTRAL REGION, DETERMINATIVE FOR ITS OWN RESONANCE CORRESPONDING TO THE OSCILLATION TYPE OF THE RESONATORS, BEING SO SELECTED WITH RESPECT TO THE CORRESPONDING DIMENSIONS OF THE RESONATORS THAT THE INDIVIDUAL RESONANCE OF THE COUPLING BRIDGE IS FAR REMOVED FROM THE INDIVIDUAL RESONANCE OF THE RESPECTIVE RESONATORS.
Claim 2
Dependent Claim
129 words
AN ELECTROMECHANICAL FILTER COMPRISING AT LEAST TWO ELONGATED PLANAR ELEMENTS FORMING RESONATORS WHICH ARE CONNECTED OVER MECHANICAL COUPLING BRIDGES INTO A UNITARY STRUCTURE, SUCH INDIVIDUAL COUPLING BRIDGE BEING SUBDIVIDED INTO THREE REGIONS, THE CENTRAL REGION OF WHICH HAS A LARGER CROSS-SECTIONAL AREA THAN THE ADJACENT REGIONS BORDERING THE RESONATORS CONNECTED THEREBY, THE LENGTH OF THE CENTRAL REGION, IN THE DIRECTION OF THE LONGITUDINAL AXIS OF THE FILTER, BEING CONSIDERABLY GREATER THAN THE CORRESPONSING LENGTH OF SAID BORDERING REGIONS, THE DIMENSIONS OF THE INDIVIDUAL CENTRAL REGION, DETERMINATIVE FOR ITS OWN RESONANCE CORRESPONDING TO THE OSCILLATION TYPE OF THE RESONATORS, BEING SO SELECTED WITH RESPECT TO THE CORRESPONDING DIMENSIONS OF THE RESONATORS THAT THE INDIVIDUAL RESONANCE OF THE COUPLING BRIDGE IS FAR REMOVED FROM THE INDIVIDUAL RESONANCE OF THE RESPECTIVE RESONATORS.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |