Patent US1849904A successfully refreshed from Google Patents.
US3673354A
Expired / Lapsed
US
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Semiconductor stress transducer
Assignee: Panasonic Holdings Corp
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Filing: 1970-05-04
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Granted: 1972-06-27
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Expires: 1990-05-04
Abstract
Abstract A semiconductor stress transducer having a pair of spaced electrodes disposed on an electrically insulating thin-film base of a flexible nature, a semiconductor piezo-resistive film being evaporated across the electrodes, means for applying an external stress to the evaporated semiconductor film so that a change in the external stress causes a change in the tension of the semiconductor film, and means for deriving an electrical signal from the electrodes due to a change in the internal resistance of the semiconductor film response to the change in the externally applied stress.
Inventors
- 👤 Fujio Oda
- 👤 Shuichi Obata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:55
CPC Classifications
H; H04; H04R; H04R21/00; G; G01; G01L; G01L1/00; G01L1/18; H04R1/00; H04R1/16; H04R17/00; H04R17/04; H04R17/08; H04R21/04; H04R23/00; H04R23/006
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
129 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end; a substantially square-shaped flexible insulating film base, having a central opening and four band-shaped portions defined between the sides of said insulating film and said central opening, connected to said support member; four band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends and mounted respectively on said four band-shaped portions of said insulating film; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to respective pairs of said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 2
Dependent Claim
129 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end; a substantially square-shaped flexible insulating film base, having a central opening and four band-shaped portions defined between the sides of said insulating film and said central opening, connected to said support member; four band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends and mounted respectively on said four band-shaped portions of said insulating film; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to respective pairs of said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 3
Dependent Claim
47 words
A pick-up cartridge as defined in claim 1, wherein said transmitting means comprises a member fixed to said cantilever and having four projections radially extending therefrom, adjacent projections being at right angles to each other, in a plane substantially perpendicular to the longitudinal axis of said cantilever.
Claim 4
Dependent Claim
145 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted at one end of said cantilever; a support member supporting said cantilever at its other end; first and second flexible insulating film bases connected to said support member; first and second band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends, parallelly disposed on and supported by said first and second film bases, respectively; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements, said transmitting means comprising a member having first and second projections extending radially therefrom substantially at right angles to each other and in a plane substantially perpendicular to the longitudinal axis of said cantilever, said transmitting means changing the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 5
Dependent Claim
145 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted at one end of said cantilever; a support member supporting said cantilever at its other end; first and second flexible insulating film bases connected to said support member; first and second band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends, parallelly disposed on and supported by said first and second film bases, respectively; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements, said transmitting means comprising a member having first and second projections extending radially therefrom substantially at right angles to each other and in a plane substantially perpendicular to the longitudinal axis of said cantilever, said transmitting means changing the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 6
Dependent Claim
138 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end; a substantially square-shaped flexible insulating film base, having a central opening and first and second band-shaped portions defined between the sides of said insulating film base and said central opening, connected to said support member; first and second band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends and mounted substantially perpendicular to each other on said first and second band-shaped portions of said insulating film, respectively; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 7
Dependent Claim
138 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end; a substantially square-shaped flexible insulating film base, having a central opening and first and second band-shaped portions defined between the sides of said insulating film base and said central opening, connected to said support member; first and second band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends and mounted substantially perpendicular to each other on said first and second band-shaped portions of said insulating film, respectively; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 8
Dependent Claim
46 words
A pick-up cartridge as defined in claim 4, wherein said transmitting means comprises a member fixed to said cantilever having four arms extending radially therefrom adjacent arms being substantially perpendicular to each other and in a plane substantially perpendicular to the longitudinal axis of said cantilever.
Claim 9
Dependent Claim
121 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end, said support member having first and second strips radially extending therefrom in a V-shaped configuration; a flexible insulating film base mounted on said support member; first and second band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends, disposed on said first and second strips, respectively; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof independently of each other as a function of the transmitted mechanical vibration.
Claim 10
Dependent Claim
121 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end, said support member having first and second strips radially extending therefrom in a V-shaped configuration; a flexible insulating film base mounted on said support member; first and second band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends, disposed on said first and second strips, respectively; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof independently of each other as a function of the transmitted mechanical vibration.
Claim 11
Dependent Claim
43 words
A pick-up cartridge as defined in claim 6, wherein said transmitting means comprises a member having first and second projections radially extending therefrom substantially at right angles to each other and in a plane substantially perpendicular to the longitudinal axis of said cantilever.
Claim 12
Dependent Claim
119 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end; first and second flexible insulating film bases mounted on said support member in a cross-shaped form; at least two band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends, said piezo-resistive elements being disposed on at least one of two arms of each of said insulating film bases; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 13
Dependent Claim
119 words
A pick-up cartridge, comprising: a cantilever; a stylus mounted on one end of said cantilever; a support member supporting said cantilever at its other end; first and second flexible insulating film bases mounted on said support member in a cross-shaped form; at least two band-shaped semiconductor piezo-resistive elements, each having electrodes at its opposite ends, said piezo-resistive elements being disposed on at least one of two arms of each of said insulating film bases; and transmitting means mounted on said other end of said cantilever for transmitting a mechanical vibration from said stylus to said piezo-resistive elements to change the tension on said piezo-resistive elements and the electrical resistance properties thereof as a function of the transmitted mechanical vibration.
Claim 14
Dependent Claim
36 words
A pick-up cartridge as defined in claim 8, wherein said transmitting means comprises a circular pressure applying member having a cylindrical abutment and disposed in a plane substantially perpendicular to the longitudinal axis of said cantilever.
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |