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US 4,093,833 AGranted
Moving coil cartridge with magnetic means to affix stylus holder to cartridge casing
OwnerKenkichi Tsukamotoinventor
Life of this patent
Estimating the term…
Abstract
A moving coil cartridge comprises a cartridge casing with a magnet and a moving coil for converting vibration of a stylus to electrical energy and a stylus holder case having a magnetic member which is attracted by the magnet to fix the stylus holder case to the cartridge casing.
Claims3
A moving coil cartridge device comprising:
- a. a vibrator section (B) including a cantilever stylus with a stylus holder case (10) and stylus holding means (10b, 10c) for said section;
- b. a cartridge casing (40) disposed over said vibrator means (B), said cartridge casing (40) having retaining members (40a, 40b) for retaining said holding means (10b, 10c);
- c. generator means (A) within said cartridge casing (40) for translating said stylus motion into electrical energy, said generator means (A) having a magnet (16) and yokes (17,18) with an air gap (G) for providing a magnetic field therein, a moving coil (15a) coupled to said vibrator section (B) in said air gap (G), a recess (20) in one of said yokes (17);
- and,
- d. a magnet member (14) on said stylus holder case (10) so disposed as to be attracted by said magnet (16) and enter said recess (20) to affix said vibrator section (B) to said generator means (A).
2 more elements
Dependencies are inferred from the claim text.