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:
Feb. 16, 1982
Filed:
Apr. 21, 1980
Rudolph H Hedel, West Windsor, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A method is provided for the manufacture of a capacitive pickup stylus. In the method of this invention an elongated stylus blank is prepared from a hard dielectric material such as diamond. The blank is formed into an elongated bar having substantially symmetrical diagonal cross-sectional halves along the length thereof and having opposing polished surfaces with one of the polished surfaces being on each of the diagonal cross-sectional halves. Thereafter, one of the cross-sectional halves is masked by a jig or the like and the other half which remains exposed is sputter coated with a conductive material. The coated stylus blank is then machined to provide a tip on a terminal end thereof with the coated polished surface positioned as the rearward electrode carrying surface of the stylus.