Variable weight phonograph cartridge

Details Variable weight phonograph cartridge Variable weight phonograph cartridge

1980-04-01

1982-03-16

Shepperd, John W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

369247, 369254, G11B 316

Patent

active

043204929

ABSTRACT:
To provide for adjustment of stylus tracking force appropriate to a particular tone arm with which a phonograph cartridge may be used, the cartridge is provided with a compartment into which one or more weights may be placed. A damper is included for preventing vibration of the weights.

REFERENCES:
patent: 1992893 (1935-02-01), Thomas
patent: 3334904 (1967-08-01), Halnes
patent: 3523690 (1970-08-01), Vande Koppel
patent: 3646279 (1972-02-01), Stanton
patent: 4185835 (1980-01-01), Robertson-Aikman

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