Pick-up cartridge

Details Pick-up cartridge Pick-up cartridge

1976-12-27

1978-07-25

Konick, Bernard

17910041K, H04R 1112

Patent

active

041031172

ABSTRACT:
A pick-up cartridge has a plate-like first magnet magnetized thicknesswise and having a central through hole through which extends a cantilever having on one end a reproducing stylus and on the other end a disc-shaped armature of a highly permeable material, the first magnet being adjacent to the armature. The armature is supported by a damper so as to be vibratable with vibration of the cantilever. At least a pair of spaced coil-carrying pole pieces have their one ends located in the vicinity of and slightly spaced radially from the armature, the other ends of the pole pieces being connected to one polarity side of a second magnet magnetized thicknesswise. The first and second magnets have the same kind of polarity oriented in the same direction. A shield casing has its bottom connected to the other polarity side of the second magnet and disposed to cover the pole pieces and armature, the shield casing having its brim positioned adjacent to the first magnet in peripherally spaced relation.

REFERENCES:
patent: 3441688 (1969-04-01), Shaper
patent: 3881073 (1975-04-01), Grado
patent: 3904837 (1975-09-01), Sugimoto
patent: 4031335 (1977-06-01), Smit

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