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:
Dec. 16, 1997
Filed:
Nov. 20, 1992
Kiyoshi Ohmori, Kanagawa, JP;
Hideyoshi Horimai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed herein is a disk drive device comprising a chassis; a spindle motor vertically movably mounted on the chassis, for rotatively driving a disk-shaped recording medium; a cam adapted to contact a pin projecting from the spindle motor, for vertically driving the spindle motor through the pin; a loading motor mounted on the chassis, for rotatively driving the cam; a block fixed to the chassis, for restricting an upper limit of a vertical stroke of the spindle motor: and a spring for biasing the spindle motor against the block. Accordingly, the spindle motor can be stably positioned in a loaded condition of the disk-shaped recording medium, and the construction can be simplified with no need of high accuracy of the cam.