Music – Instruments
Patent
1983-08-15
1985-06-25
Isen, Forester W.
Music
Instruments
84 116, G10H 300
Patent
active
045246670
ABSTRACT:
An electromagnetic pickup adapted for use with a multistringed musical instrument having strings formed of a ferromagnetic material having a first wire coil wound in a first direction in an elongated oval shape wherein the first coil has a geometrical distance along its elongated axis which exceeds the distance between the outermost strings wherein the first coil includes an opening which extends through the interior thereof, a second wire coil wound in a second direction and in an elongated oval shape, the geometrical dimensions of which are substantially equal to that of the first coil and wherein the second coil includes a second opening which extends to the interior thereof, and wherein the second coil is positioned in a spaced opposed aligned relationship with the first coil with the first opening in axial alignment with the second opening forming a coil stack assembly having a hollowed-out central cavity, a permanent magnet assembly which is positioned in the hollowed-out central cavity with one pole positioned in a magnetic coupling relationship with the strings of the multistringed instrument and with the other pole positioned so as to be remote from the string and a circuit for electrically connecting the first coil and the second coil in either a selected dual- or single-coil configuration wherein the coil stack assembly applies a magnetic field across the strings which is intercepted by the vibrating strings to produce an electrical signal is shown. A method for utilizing an electromagnetic pickup is shown.
REFERENCES:
patent: 3657461 (1972-04-01), Freeman
patent: 3915048 (1975-10-01), Stich
patent: 4442749 (1984-04-01), DiMarzio et al.
patent: 4463648 (1984-08-01), Fender
Isen Forester W.
Meaney, Jr. Daniel J.
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