US4061934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration pickup unit for sensing vibrations of musical instruments and the like
Assignee: Rowe Dearmond Inc
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Filing: 1975-10-14
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Granted: 1977-12-06
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Expires: 1995-10-14
Abstract
Abstract An electrical pickup unit for sensing vibrations particularly in the audible range as produced by musical instruments such as stringed instruments like guitars and violins or wind instruments like trumpets and clarinets. The unit includes a flex or bender type piezoelectric element secured to a diaphragm resiliently mounted and adapted to sense the vibratory energy surfaces such as at the root of the strings of stringed instruments or at the bell of wind instruments.
Inventors
- 👤 Horace N. Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:21
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A pickup unit for translation of mechanical vibrations such as of musical instruments and the like into electrical signals of corresponding frequency comprising; a casing for said pickup unit having at least one open wall, a vibratable diaphragm, a flex type piezoelectric element bonded to the surface of said diaphragm, means resiliently supporting said diaphragm and piezoelectric element at the open wall of said casing with said piezoelectric element disposed on the interior casing side thereof, a vibration transmitting means comprising a layer of cork secured to said diaphragm and securing means on each side of said vibration transmitting means comprising resilient foam material having an adhesive surface.
Claim 2
Dependent Claim
108 words
A pickup unit for translation of mechanical vibrations such as of musical instruments and the like into electrical signals of corresponding frequency comprising; a casing for said pickup unit having at least one open wall, a vibratable diaphragm, a flex type piezoelectric element bonded to the surface of said diaphragm, means resiliently supporting said diaphragm and piezoelectric element at the open wall of said casing with said piezoelectric element disposed on the interior casing side thereof, a vibration transmitting means comprising a layer of cork secured to said diaphragm and securing means on each side of said vibration transmitting means comprising resilient foam material having an adhesive surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |