Phonograph tone arm and cartridge damping system

Details Phonograph tone arm and cartridge damping system Phonograph tone arm and cartridge damping system

1978-06-22

1979-05-01

Phillips, Charles E.

Undertaking

G11B 318

Patent

active

041519981

ABSTRACT:
A phonograph tone arm and cartridge damping system in which a damper is coupled to a tone arm having a cartridge at one end thereof or to the cartridge itself and is adapted to ride on the surface of a record to minimize the effect of surface warps on the tone arm and cartridge. The damper includes a housing, a low friction piston slidable within the housing, and a glider adapted to ride on the surface of the record. The piston has an orifice therethrough to permit ambient air forced through the orifice to serve as the damping medium, or the piston and the housing have a preselected spacing between them to allow ambient air to flow therethrough. The glider has attached thereto a piece of soft velure or pile fabric, or a plurality of brush tips, which act to minimize friction between the glider surface and the record.

REFERENCES:
patent: 2566091 (1951-08-01), Masterson
patent: 2572712 (1951-10-01), Fisher
patent: 3228700 (1966-01-01), Andrews et al.
patent: 3301565 (1967-01-01), Bachman
"A New Method of Arm Cartridge Damping," Rangabe, Collected Papers, 2nd Ed., 1975 Convention of Audio Engineering Society.

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