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:
Nov. 01, 1983
Filed:
May. 01, 1981
Applicant:
Inventor:
Kunio Goto, Yokohama, JP;
Assignee:
Victor Company of Japan, Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
369126 ; 369 43 ; 369170 ; 369215 ;
Abstract
A capacitance detection type stylus is attached to the free end of a cantilever which is supported on a vertically movable resilient pivot. A permanent magnet is fixed to the movable pivot. A servo-control coil is provided adjacent the permanent magnet to move it in response to angular displacement of the cantilever from a predetermined position. The pivot is moved in the direction of fluctuation of a disc record to maintain the stylus in a proper orientation with respect to the record surface.