US3683129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroacoustic transducer having a diaphragm made of at least one layer of piezoelectric material
Assignee: US Philips Corp
•
Filing: 1969-09-25
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Granted: 1972-08-08
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Expires: 1989-09-25
Abstract
Abstract An electroacoustic transducer comprising a thin-walled cylindrical sleeve with a vibrating diaphragm that includes at least one layer of piezoelectric material and rigidly secured at its peripheral edge to one end of the sleeve. This allows the diaphragm to perform a pivotal movement at its peripheral edge. In a second embodiment the sleeve is conical with the narrow end flanged inwardly and the diaphragm rigidly secured thereto. If the sleeve is metal, an integrated amplifier may be mounted thereon so that the sleeve acts as a heat sink.
Inventors
- 👤 Jan Roos
- 👤 Salomon Boone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:08
CPC Classifications
H; H04; H04R; H04R17/00; H03; H03F; H03F13/00; H03F3/00; H03F3/04; H04R7/00; H04R7/16; H04R7/18; H04R7/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
69 words
An electroacoustic transducer comprising a thin-walled housing sleeve, a vibrating diaphragm including at least one layer of piezoelectric material, the wall thickness of the sleeve being less than the thickness of the diaphragm, and means for rigidly securing the outer peripheral edge of the diaphragm directly to the inner surface of one end of said thin-walled sleeve so that the peripheral edge of the diaphragm performs a pivotal movement.
Claim 2
Dependent Claim
69 words
An electroacoustic transducer comprising a thin-walled housing sleeve, a vibrating diaphragm including at least one layer of piezoelectric material, the wall thickness of the sleeve being less than the thickness of the diaphragm, and means for rigidly securing the outer peripheral edge of the diaphragm directly to the inner surface of one end of said thin-walled sleeve so that the peripheral edge of the diaphragm performs a pivotal movement.
Claim 3
Dependent Claim
61 words
An electroacoustic transducer comprising a thin-walled housing sleeve, the sleeve comprising a conical member with the smaller diameter end having its edge flanged inwardly a vibrating diaphragm including at least one layer of a piezoelectric material, means for rigidly securing the peripheral edge of the diaphragm to the flange so that the peripheral edge of the diaphragm performs a pivotal movement.
Claim 4
Dependent Claim
61 words
An electroacoustic transducer comprising a thin-walled housing sleeve, the sleeve comprising a conical member with the smaller diameter end having its edge flanged inwardly a vibrating diaphragm including at least one layer of a piezoelectric material, means for rigidly securing the peripheral edge of the diaphragm to the flange so that the peripheral edge of the diaphragm performs a pivotal movement.
Claim 5
Dependent Claim
37 words
A transducer as claimed in claim 2, characterized in that the outer dimensions of the sleeve at the area of engagement of the flange with the diaphragm are slightly smaller than the outer dimension of the diaphragm.
Claim 6
Dependent Claim
30 words
A transducer as claimed in claim 2 wherein the wall thickness of the flange in the axial direction is less than the thickness of the diaphragm in said axial direction.
Claim 7
Dependent Claim
70 words
An electroacoustic transducer comprising a thin-walled housing sleeve made of metal, a vibrating diaphragm including at least one layer of a piezoelectric material, means for rigidly securing the peripheral edge of the diaphragm to one end of said thin-walled sleeve so that the peripheral edge of the diaphragm performs a pivotal movement, and an amplifier for the transducer signals mounted on the sleeve in the form of an integrated circuit.
Claim 8
Dependent Claim
70 words
An electroacoustic transducer comprising a thin-walled housing sleeve made of metal, a vibrating diaphragm including at least one layer of a piezoelectric material, means for rigidly securing the peripheral edge of the diaphragm to one end of said thin-walled sleeve so that the peripheral edge of the diaphragm performs a pivotal movement, and an amplifier for the transducer signals mounted on the sleeve in the form of an integrated circuit.
Claim 9
Dependent Claim
80 words
An electroacoustic transducer comprising a thin-walled housing sleeve, the sleeve comprising a conical member with the smaller diameter end flanged inwardly from the inner surface of the sleeve, a vibrating diaphragm including at least one layer of a piezoelectric material, means for rigidly securing the peripheral edge of the diaphragm to the flange so as to extend radially beyond the outer surface of the sleeve at said smaller end whereby the peripheral edge of the diaphragm performs a pivotal movement.
Claim 10
Dependent Claim
80 words
An electroacoustic transducer comprising a thin-walled housing sleeve, the sleeve comprising a conical member with the smaller diameter end flanged inwardly from the inner surface of the sleeve, a vibrating diaphragm including at least one layer of a piezoelectric material, means for rigidly securing the peripheral edge of the diaphragm to the flange so as to extend radially beyond the outer surface of the sleeve at said smaller end whereby the peripheral edge of the diaphragm performs a pivotal movement.
Claim 11
Dependent Claim
29 words
A transducer as claimed in claim 6 wherein the peripheral edge of the diaphragm is rigidly secured to the flange by engagement of one surface only of the diaphragm.
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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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |