US3132713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphone diaphragm
Assignee: Shure Inc
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Filing: 1961-05-25
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Granted: 1964-05-12
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Expires: 1981-05-25
Abstract
No abstract record available.
Inventors
- 👤 Charles E Seeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:16
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/12; H04R7/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A MICROPHONE DIAPHRAGM COMPRISING A FLEXIBLE MATERIAL FORMED IN A PLURALITY OF CONCENTRIC CONES OF REVOLUTION, SAID CONES OF REVOLUTION INTERSECTING EACH OTHER AND PROVIDING A CIRCULAR AREA OF HIGH RIGIDITY FOR SUPPORT OF A VOICE COIL, AND BRIDGE MEANS BETWEEN SAID CONES OF REVOLUTION ALONG THE AREA OF INCREASED RIGIDITY PROVIDING ACOUSTIC COMMUNICATION BETWEEN VOLUMES DEFINED BY SAID CONES OF REVOLUTION INWARDLY AND OUTWARDLY OF THE AREA OF HIGH RIGIDITY.
Claim 2
Dependent Claim
71 words
A MICROPHONE DIAPHRAGM COMPRISING A FLEXIBLE MATERIAL FORMED IN A PLURALITY OF CONCENTRIC CONES OF REVOLUTION, SAID CONES OF REVOLUTION INTERSECTING EACH OTHER AND PROVIDING A CIRCULAR AREA OF HIGH RIGIDITY FOR SUPPORT OF A VOICE COIL, AND BRIDGE MEANS BETWEEN SAID CONES OF REVOLUTION ALONG THE AREA OF INCREASED RIGIDITY PROVIDING ACOUSTIC COMMUNICATION BETWEEN VOLUMES DEFINED BY SAID CONES OF REVOLUTION INWARDLY AND OUTWARDLY OF THE AREA OF HIGH RIGIDITY.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |