Phono pickup cartridge

Details Phono pickup cartridge Phono pickup cartridge

1981-06-29

1985-05-21

Stephan, Steven L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

369170, G11B 302

Patent

active

045190631

ABSTRACT:
A moving-coil type phono pickup cartridge in which undesirable resonances are eliminated and a vibrating unit is maintained in alignment with a predetermined center position of a magnet unit. A first non-magnetic body has a mount portion and a support portion extending perpendicularly to the mount portion. The support portion has a longitudinal hole formed therein which is intersected by a slit. A screw tightens and loosens a vibrating unit disposed in the hole by adjusting the gap width of the slit. A magnet unit is secured with a screw to the first body with a center pole piece thereof confronting a center of coils of the vibrating unit.

REFERENCES:
patent: 2103361 (1937-12-01), Guedon
patent: 2809842 (1957-10-01), Mueller
patent: 3060281 (1962-10-01), Snepvangers
patent: 3574944 (1971-04-01), Reynolds
patent: 3787984 (1974-01-01), Bear et al.
patent: 4114896 (1978-09-01), Okura
patent: 4276635 (1981-06-01), Obata et al.
patent: 4310917 (1982-01-01), Hansen et al.
patent: 4327433 (1982-04-01), Okura et al.

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