Stereo phonograph pick-up cartridge

Details Stereo phonograph pick-up cartridge Stereo phonograph pick-up cartridge

1975-09-08

1977-03-01

Stephan, Steven L.

Undertaking

17910041K, G11B 346, H04R 116, H04R 1108

Patent

active

040098850

ABSTRACT:
A magnetic stereo phonograph pick-up cartidge, including a removable stylus assembly of low mass which includes means for precisely aligning the armature with respect to the pole pieces. A boss on the stylus assembly and a mating aperture on the cartridge body assure alignment in the first instance, and a symmetrical, rubber, armature-pivot block is so positioned that perfect alignment between armature and pole pieces, and a proper tracking angle, are achieved only when the stylus is on a recording. The stylus assembly further includes a permanent magnet for energizing the armature, mounted so as to minimize interaction with the pole pieces and eliminate any distortion of the armature, and so provide a more linear, distortion-free response.

REFERENCES:
patent: 2622156 (1952-12-01), Baker
patent: 3294405 (1966-12-01), Pritchard
patent: 3349194 (1967-10-01), Shaper
patent: 3538266 (1970-11-01), Cho
patent: 3641284 (1972-02-01), Westerkamp et al.
patent: 3926441 (1975-12-01), Hibi et al.

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