Music – Instruments
Patent
1975-02-28
1976-10-05
Weldon, Ulysses
Music
Instruments
84 116, G10H 300
Patent
active
039837777
ABSTRACT:
A single face, variable reluctance pickup for steel string musical instruments is described which provides a highly asymmetrical magnetic field for preferentially sensing and generating electrical signals responsive to string vibrations perpendicular to the string plane. The described pickup features a single permanent bar magnet, common shaping faces, oriented parallel the string plane and perpendicular the strings and a plurality of sensing circuits having cores which magnetically and mechanically couple the shaping faces and the bar magnet. The described pickup provides a magnetic field in the string plane having a large flux gradient perpendicular the string plane and a minimum flux gradient parallel the string plane. The pickup is insensitive to "bending" and provides electronically amplified musical instruments with tonal characteristics similar to the tonal characteristics of acoustic string instruments.
REFERENCES:
patent: 2175325 (1939-10-01), Sunshine
patent: 2262335 (1941-11-01), Russell
patent: 2817261 (1957-12-01), Fender
patent: 2896491 (1959-07-01), Lover
patent: 2911871 (1959-11-01), Schultz
patent: 3236930 (1966-02-01), Fender
patent: 3483303 (1969-12-01), Warner
patent: 3715446 (1973-02-01), Kosinski
patent: R25728 (1965-02-01), Freeman
Newhouse David E.
Weldon Ulysses
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