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:
Sep. 17, 1985
Filed:
Dec. 04, 1981
Applicant:
Inventor:
Hideaki Takehara, Fujisawa, JP;
Assignee:
Victor Company of Japan, Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
369126 ; 369173 ;
Abstract
An oxidation resistant soldering compound is deposited in a bore formed on an end of a ceramic shank. A diamond grain is placed in the bore of the shank and heated at an elevated temperature in a vacuum to solder the diamond with the ceramic shank. The soldered diamond and ceramic body are lapped into the shape of a stylus. The stylus is subsequently placed in an environment containing a small amount of oxygen and heated at a temperature lower than the solidus temperature of the soldering compound to convert the surface area of the diamond into a conductive layer of carbon which is lapped into an elongated form to serve as a stylus electrode.