Patent US3084228A successfully refreshed from Google Patents.
US3084228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezo-electric stereo transducer
Assignee: Nippon Columbia Co Ltd
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Filing: 1960-04-22
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Granted: 1963-04-02
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Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Shiga Takeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:21
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/04; H04R17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A PIEZO-ELECTRIC TRANSDUCER DEVICE COMPRISING TWO PIEZO-ELECTRIC ELEMENTS INTEGRALLY LAMINATED TO EACH OTHER WITH THEIR TWO MAJOR AXES BEING IN THE SAME PLANE, A FIRST ELECTRODE SECURED AT THE INTERFACE BETWEEN THE LAMINATED ELEMENTS, A PAIR OF ELECTRODES SECURED TO THE OPPOSITE FACES OF SAID ELEMENTS IN PARALLEL SPACED RELATION TO SAID FIRST ELECTRODE, MEANS FREELY SUPPORTING ONE END OF SAID LAMINATED ELEMENTS, EACH OF SAID ELEMENTS BEING RESPONSIVE TO BOTH BENDING AND TORSIONAL FORCES APPLIED THERETO, DRIVING MEANS INCLUDING A PHONOGRAPH STYLUS ARRANGED TO BE RECEIVED IN A 45-45 RECORD GROOVE, SAID DRIVING MEANS BEING MECHANICALLY COUPLED TO THE FREELY SUPPORTED ENDS OF SAID ELEMENTS TO PROVIDE BENDING AND TORSIONAL FORCES ALONG THE ENTIRE EXPOSED SURFACE OF SAID LAMINATED ELEMENTS, THE ANGLE OF POLARIZATION OF ONE OF SAID ELEMENTS WITH RESPECT TO THE MAJOR AXIS OF SAID ELEMENT BEING DIFFERENT FROM THE ANGLE OF POLARIZATION OF THE OTHER OF SAID ELEMENTS, AND DEFINING AN ANGLE $ WITH ITS MAJOR AXIS WHICH SATISFIES THE FOLLOWING EQUATION WHEN BENDING AND TORSIONAL FORCES ARE APPLIED TO THE TRANSDUCER:
Claim 2
Dependent Claim
176 words
A PIEZO-ELECTRIC TRANSDUCER DEVICE COMPRISING TWO PIEZO-ELECTRIC ELEMENTS INTEGRALLY LAMINATED TO EACH OTHER WITH THEIR TWO MAJOR AXES BEING IN THE SAME PLANE, A FIRST ELECTRODE SECURED AT THE INTERFACE BETWEEN THE LAMINATED ELEMENTS, A PAIR OF ELECTRODES SECURED TO THE OPPOSITE FACES OF SAID ELEMENTS IN PARALLEL SPACED RELATION TO SAID FIRST ELECTRODE, MEANS FREELY SUPPORTING ONE END OF SAID LAMINATED ELEMENTS, EACH OF SAID ELEMENTS BEING RESPONSIVE TO BOTH BENDING AND TORSIONAL FORCES APPLIED THERETO, DRIVING MEANS INCLUDING A PHONOGRAPH STYLUS ARRANGED TO BE RECEIVED IN A 45-45 RECORD GROOVE, SAID DRIVING MEANS BEING MECHANICALLY COUPLED TO THE FREELY SUPPORTED ENDS OF SAID ELEMENTS TO PROVIDE BENDING AND TORSIONAL FORCES ALONG THE ENTIRE EXPOSED SURFACE OF SAID LAMINATED ELEMENTS, THE ANGLE OF POLARIZATION OF ONE OF SAID ELEMENTS WITH RESPECT TO THE MAJOR AXIS OF SAID ELEMENT BEING DIFFERENT FROM THE ANGLE OF POLARIZATION OF THE OTHER OF SAID ELEMENTS, AND DEFINING AN ANGLE $ WITH ITS MAJOR AXIS WHICH SATISFIES THE FOLLOWING EQUATION WHEN BENDING AND TORSIONAL FORCES ARE APPLIED TO THE TRANSDUCER:
References Cited (Backward Citations)
US2222056A
Cited
US2703343A
Cited
US2786899A
Cited
US2848559A
Cited
US2962290A
Cited
FR1199831A
Cited
GB850043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |