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:
Aug. 10, 1976
Filed:
Jul. 11, 1975
Applicant:
Inventors:
Masaru Yamano, Hirakata, JA;
Hironosuke Ikeda, Hirakata, JA;
Ichiro Takahara, Kadoma, JA;
Toshiyuki Kudo, Hirakata, JA;
Kazuo Ito, Takarazuka, JA;
Makoto Yamada, Katano, JA;
Assignee:
Sanyo Electric Co., Ltd., , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
5124 / ; 5128 / ;
Abstract
A stylus grinding device for use in a video disc player comprises a rotary grinding disc adapted to be rotated at its center during a grinding operation subject to the pickup stylus. The stylus grinding device is designed such that the amount of the pickup stylus to be ground varies depending upon the duration of actual service performed by the pickup stylus to reproduce video information recorded on a flexible foil-type disc record.