Patent US3725561A successfully refreshed from Google Patents.
US3725561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrically reproducing music and improved electrical pickup for practicing the same
Assignee: Gibson Guitar Corp
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Filing: 1971-09-14
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Granted: 1973-04-03
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Expires: 1991-09-14
Abstract
Abstract Improvements in the electrical reproduction of the audio output of musical instruments having vibrating surfaces reproducing said audio output, illustrative examples of which are a drum and a guitar. Product aspects of the invention are demonstrated by the use of an improved electrical pickup that is mounted for vibration in unison with the vibrating surface and thus provides a vibrating magnetic field. A field-influencing magnetic body is confined within a compartment of the electrical pickup that is bounded by resilient walls that in practice causes said body to be set into vibration along with the pickup but in an out-ofphase vibratory pattern. The effect of the vibrating magnetic body is to provide a signal-producing movement relative to the magnetic field that effectively results in audio output reproduction.
Inventors
- 👤 L Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:57
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/146; G10H2230/00; G10H2230/045; G10H2230/251; G10H2230/275; G10H2230/321; Y; Y10; Y10S; Y10S84/00; Y10S84/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
An improved electrical pickup for a musical instrument having a vibrating body producing the musical tones thereof comprising an electrical pickup having means producing a magnetic field and at least one coil in electrical signal-producing relation to said magnetic field, a resilient body having internal walls bounding an internal volume of a predetermined extent, means mounting both said electrical pickup and said resilient body for movement in unison with said vibrating body, and a magnetic means disposed within said internal volume of a smaller extent than said internal volume and free of any connection with any of said internal walls bounding said internal volume so as to have a vibratory pattern which differs from that of said electrical pickup and thereby being electrically effective to cause shifting in said magnetic field due to the relative vibrations between said magnetic means and said electrical pickup, whereby said shifting magnetic field produces electrical signals in said coil related to said vibration of said vibrating body of said instrument.
Claim 2
Dependent Claim
166 words
An improved electrical pickup for a musical instrument having a vibrating body producing the musical tones thereof comprising an electrical pickup having means producing a magnetic field and at least one coil in electrical signal-producing relation to said magnetic field, a resilient body having internal walls bounding an internal volume of a predetermined extent, means mounting both said electrical pickup and said resilient body for movement in unison with said vibrating body, and a magnetic means disposed within said internal volume of a smaller extent than said internal volume and free of any connection with any of said internal walls bounding said internal volume so as to have a vibratory pattern which differs from that of said electrical pickup and thereby being electrically effective to cause shifting in said magnetic field due to the relative vibrations between said magnetic means and said electrical pickup, whereby said shifting magnetic field produces electrical signals in said coil related to said vibration of said vibrating body of said instrument.
Claim 3
Dependent Claim
188 words
An improved electrical pickup for a stringed musical instrument having vibrating strings producing the musical tones thereof comprising an electrical pickup having means producing a magnetic field and at least one coil in electrical signal-producing relation to said magnetic field, a resilient body having internal walls bounding an internal volume of a predetermined extent, a bridge in supporting relation to and adapted to be vibrated by said vibrating strings of said stringed instrument, means mounting both said electrical pickup and said resilient body in depending relation from said bridge for movement in unison therewith, and a magnetic means disposed within said internal volume of a smaller extent than said internal volume and free of any connection with any of said internal walls bounding said internal volume so as to have a vibratory pattern which differs from that of said electrical pickup and thereby being electrically effective to cause shifting in said magnetic field due to the relative vibration between said magnetic means and said electrical pickup, whereby said shifting magnetic field produces electrical signals in said coil related to said vibration of said vibrating strings of said instrument.
Claim 4
Dependent Claim
188 words
An improved electrical pickup for a stringed musical instrument having vibrating strings producing the musical tones thereof comprising an electrical pickup having means producing a magnetic field and at least one coil in electrical signal-producing relation to said magnetic field, a resilient body having internal walls bounding an internal volume of a predetermined extent, a bridge in supporting relation to and adapted to be vibrated by said vibrating strings of said stringed instrument, means mounting both said electrical pickup and said resilient body in depending relation from said bridge for movement in unison therewith, and a magnetic means disposed within said internal volume of a smaller extent than said internal volume and free of any connection with any of said internal walls bounding said internal volume so as to have a vibratory pattern which differs from that of said electrical pickup and thereby being electrically effective to cause shifting in said magnetic field due to the relative vibration between said magnetic means and said electrical pickup, whereby said shifting magnetic field produces electrical signals in said coil related to said vibration of said vibrating strings of said instrument.
Claim 5
Dependent Claim
206 words
An improved electrical pickup for a musical instrument having a vibrating body producing the musical tones thereof comprising an electrical pickup having means producing a magnetic field and at least one coil in electrical signal-producing relation to said magnetic field, a resilient body having internal walls bounding an internal volume of a predetermined extent, means mounting both said electrical pickup and said resilient body for movement in unison with said vibrating body, a first magnetic means having an interposed position between said electrical pickup and said vibrating body electrically effective to cause shifting in said magnetic field of said electrical pickup, and a second magnetic means disposed within said internal volume of a smaller extent than said internal volume and free of any connection with any of said internal walls bounding said internal volume so as to have a vibratory pattern which differs from that of said electrical pickup and thereby being electrically effective to cause shifting in said magnetic field due to the relative vibration between said magnetic body and said electrical pickup, whereby the aforesaid two shifting magnetic fields caused by said first and second magnetic means produce electrical signals in said coil related to said vibration of said vibrating body of said instrument.
Claim 6
Dependent Claim
206 words
An improved electrical pickup for a musical instrument having a vibrating body producing the musical tones thereof comprising an electrical pickup having means producing a magnetic field and at least one coil in electrical signal-producing relation to said magnetic field, a resilient body having internal walls bounding an internal volume of a predetermined extent, means mounting both said electrical pickup and said resilient body for movement in unison with said vibrating body, a first magnetic means having an interposed position between said electrical pickup and said vibrating body electrically effective to cause shifting in said magnetic field of said electrical pickup, and a second magnetic means disposed within said internal volume of a smaller extent than said internal volume and free of any connection with any of said internal walls bounding said internal volume so as to have a vibratory pattern which differs from that of said electrical pickup and thereby being electrically effective to cause shifting in said magnetic field due to the relative vibration between said magnetic body and said electrical pickup, whereby the aforesaid two shifting magnetic fields caused by said first and second magnetic means produce electrical signals in said coil related to said vibration of said vibrating body of said instrument.
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |