Moving-coil type pickup cartridge

Details Moving-coil type pickup cartridge Moving-coil type pickup cartridge

1978-10-23

1980-06-24

Konick, Bernard

17910041K, H04R 916

Patent

active

042096707

ABSTRACT:
A moving-coil type pickup cartridge comprising a cantilever provided at the free end thereof with a stylus for tracing a sound groove of a record disc, a coil plate provided on the cantilever in a manner to vibrate in response to vibration of the stylus, and an arrangement for producing an effective magnetic field within a specific gap. The coil plate comprises a thin electrically insulating base plate and at least one coil which is formed from a thin film in a spirally-shaped pattern on at least one surface of the base plate. The coil plate has at least one upright part formed by bending the base plate together with a portion of the coil and interposed in a freely vibratory manner within said gap of the magnetic field producing arrangement and a mounting part integrally joined to the upright part and fixed to the cantilever.

REFERENCES:
patent: 2034872 (1936-03-01), Keller
patent: 3618124 (1971-11-01), Dreisbach
patent: 3648264 (1972-03-01), Gruczelak
patent: 3679843 (1972-07-01), Cho
patent: 4124783 (1978-11-01), Nemoto

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