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:
Apr. 15, 1980
Filed:
Dec. 06, 1976
Frederick L Dixon, Trenton, NJ (US);
Leonard P Fox, Cherry Hill, NJ (US);
Edward G Trachman, Princeton, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A pad for wiping the surface of a high-density information disc wherein information is recorded in a groove on the surface of the disc, comprises a plurality of fibers, projecting from a backing element and having ridged outer surfaces. The diameter of each of the fibers is greater than the width of the groove, while the width of at least some of the ridges is narrower than the width of the groove. One wiping method involves manually bringing the pad's fibers into contact with the grooved surface of the disc while establishing relative motion therebetween. In an alternative method, the wiping function is automatically implemented in a disc player by means mounted on the player lid for bringing the pad's fibers into and out of contact with the grooved surface of a disc carried by a rotating turntable, responsively to the travel of a signal pickup carriage.