Tone arm damping device

Details Tone arm damping device Tone arm damping device

1979-09-18

1981-12-08

Phillips, Charles E.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

G11B 318

Patent

active

043051472

ABSTRACT:
A tone arm damping device which provides damping for both horizontal and vertical vibration forces utilizing a single damping mechanism. A gimbal-type support structure includes first and second rotatable bodies rotated respectively from a fixed shaft and from each other. The second or inner rotatable body has formed therein an annular reservoir of damping fluid. A fluted damping ring, attached through an adjustment mechanism to the fixed shaft, extends into the fluid reservoir. The extent of the damping ring into the fluid and hence the amount of the damping force may be set by the adjustment mechanism.

REFERENCES:
patent: 3028161 (1962-04-01), Siebert
patent: 3297830 (1967-01-01), Baloghy
patent: 3647224 (1972-03-01), Klein
patent: 3836155 (1974-09-01), Joannoa
patent: 3963246 (1976-06-01), Trochimowski
patent: 4033591 (1977-07-01), Ichikawa
patent: 4154445 (1979-05-01), Joannoa

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