US3206558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Erie Technological Products Inc
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Filing: 1961-09-22
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Granted: 1965-09-14
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Expires: 1981-09-22
Abstract
No abstract record available.
Inventors
- 👤 Lyle E Shoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:35
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/02; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A MICROPHONE COMPRISING A HOUSING CLOSED AT ONE END BY A FLEXIBLE DIAPHRAGM AND AT THE OTHER END BY A GROUND PLATE, SAID DIAPHRAGM HAVING A RIM FIXED TO THE HOUSING AND AN ANNULAR SECTION INCLINED INWARDLY FROM THE RIM AND A DEPRESSED CIRCULAR CENTER SECTION, A BENDER TYPE PIEZOELECTRIC ELEMENT WITHIN THE HOUSING AND HAVING ITS CENTRAL PART FIXED AT ONE SIDE TO SAID CENTER SECTION OF THE DIAPHRAGM WITH THE BALANCE OF THE ELEMENT UNSUPPORTED AND PROJECTING RADIALLY OUTSIDE AND OVERHANGING THE CENTER SECTION, SAID DIAPHRAGM BEING SO FLEXIBLE AS COMPARED TO THE PIEZOELECTRIC ELEMENT THAT IT IS EFFECTIVELY DE-COUPLED AND DOES NOT ENTER INTO THE RESONANT RESPONSE OF THE PIEZOELECTRIC ELEMENT, TWO ELECTRODES ON THE PIEZOLECTRICAL ELEMENT, AND A TWO CONDUCTOR CABLE HAVING ONE CONDUCTOR CONNECTED TO EACH ELECTRODE, AND ONE OF THE CABLE CONDUCTORS BEING CONNECTED TO SAID GROUND PLATE.
Claim 2
Dependent Claim
144 words
A MICROPHONE COMPRISING A HOUSING CLOSED AT ONE END BY A FLEXIBLE DIAPHRAGM AND AT THE OTHER END BY A GROUND PLATE, SAID DIAPHRAGM HAVING A RIM FIXED TO THE HOUSING AND AN ANNULAR SECTION INCLINED INWARDLY FROM THE RIM AND A DEPRESSED CIRCULAR CENTER SECTION, A BENDER TYPE PIEZOELECTRIC ELEMENT WITHIN THE HOUSING AND HAVING ITS CENTRAL PART FIXED AT ONE SIDE TO SAID CENTER SECTION OF THE DIAPHRAGM WITH THE BALANCE OF THE ELEMENT UNSUPPORTED AND PROJECTING RADIALLY OUTSIDE AND OVERHANGING THE CENTER SECTION, SAID DIAPHRAGM BEING SO FLEXIBLE AS COMPARED TO THE PIEZOELECTRIC ELEMENT THAT IT IS EFFECTIVELY DE-COUPLED AND DOES NOT ENTER INTO THE RESONANT RESPONSE OF THE PIEZOELECTRIC ELEMENT, TWO ELECTRODES ON THE PIEZOLECTRICAL ELEMENT, AND A TWO CONDUCTOR CABLE HAVING ONE CONDUCTOR CONNECTED TO EACH ELECTRODE, AND ONE OF THE CABLE CONDUCTORS BEING CONNECTED TO SAID GROUND PLATE.
References Cited (Backward Citations)
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US2406119A
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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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |