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. 05, 1996
Filed:
Apr. 06, 1994
Hiroyuki Kuno, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Abstract
A magnetic disk drive comprises a motor having a substantially cylindrical rotor, and three magnetic disks each having a center hole in which the rotor is inserted, and fitted on the outer circumferential surface of the rotor. The magnetic disks are displaced in a direction along the diameter of the rotor so that the inner circumferential edge of each magnetic disk defining the center hole is pressed against the outer circumferential surface of the rotor. The magnetic disks are fixed to the rotor by a fixing member mounted on the rotor. A counterweight for correcting the balance of the magnetic disk in rotation is mounted on the fixing member in the vicinity of that region of the outer circumferential surface of the rotor against which the inner circumferential edges of the magnetic disks are pressed.