US3586792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for assembling electro-acoustical transducer diaphragm assemblies
Assignee: International Standard Electric Corp
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Filing: 1970-02-24
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Granted: 1971-06-22
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Expires: 1990-02-24
Abstract
Abstract Diaphragm assemblies are provided for use in moving coil transducers. A diaphragm has a speech coil former extending from the rear face of the diaphragm. The complete surfaces of the diaphragm and the speech coil former are coated with a metallic layer, and sections of the layer are removed from the former to provide the speech coil.
Inventors
- 👤 Michael Lawrence Gayford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:49
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A method for fabricating a diaphragm assembly for use in moving coil transducers comprising the steps of: molding a diaphragm and speech coil former, forming said diaphragm assembly from said molded diaphragm and speech coil former in a manner such that said speech coil former extends from the rear of said diaphragm, coating said speech coil former with a metallic layer, and removing sections of said metallic layer to provide a speech coil in the form of spiral strips.
Claim 2
Independent Claim
79 words
A method for fabricating a diaphragm assembly for use in moving coil transducers comprising the steps of: molding a diaphragm and speech coil former, forming said diaphragm assembly from said molded diaphragm and speech coil former in a manner such that said speech coil former extends from the rear of said diaphragm, coating said speech coil former with a metallic layer, and removing sections of said metallic layer to provide a speech coil in the form of spiral strips.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein said coating is accomplished by plating and wherein said removing is accomplished by photo etching.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein contact leads are connected to the speech coil using conducting cement.
Claim 5
Dependent Claim
26 words
The method of claim 1 wherein said diaphragm and said speech coil former are molded separately and including the step of connecting the separately molded sections.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |