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:
Jan. 25, 1983
Filed:
Feb. 27, 1981
Grzegorz Kaganowicz, Princeton, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A keel-tipped stylus for playback of video information from a disc record comprises a tapering body, a constricted terminal region and shoulders joining the tapering body to the constricted terminal region. A method for preparing a deep groove plastic replica disc for use in lapping the constricted terminal region on the tip of the playback stylus is disclosed. The method includes the step of mechanically cutting a deep groove into a metal substrate surface with a diamond cutting stylus. The diamond cutting stylus has a tip having a shape complementary to the shape of the keel groove to be formed into the metal surface. During the mechanical cutting operation, the tip of the stylus is introduced into the metal surface to a depth sufficient to cut the deep groove to the desired depth across the surface of the metal substrate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile