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. 08, 1994
Filed:
Jul. 01, 1993
Yoshiyuki Kawakami, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A magnetic disk apparatus includes a base on which a spindle motor for rotating a magnetic disk and a carriage supporting a magnetic head are mounted. A voice coil motor for rotating the carriage is mounted on the base. The voice coil motor includes a bottom yoke, a top yoke facing the bottom yoke with a gap, a magnet fixed to the top yoke to face the bottom yoke, and a coil fixed to the carriage. The base is formed integrally with the bottom yoke by insert molding. The bottom yoke is partially buried in the base and its upper surface is exposed to the outside the base. The bottom yoke has tapped holes, and the top yoke with the magnet is fixed to the bottom yoke by screwing screws into the tapped holes via through holes bored in the top yoke.