The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 1979
Filed:
Jun. 22, 1978
Stephen Kurtin, Sherman Oaks, CA (US);
Bruce R Maier, Columbia, MO (US);
Discwasher Corporation, Columbia, MO (US);
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.