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:
Feb. 12, 2002
Filed:
Mar. 05, 1998
Applicant:
Inventor:
Masaya Suwa, Tokyo, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/55 ;
U.S. Cl.
CPC ...
G11B 5/55 ;
Abstract
A side yoke is integrally formed on a cover of magnetic material in a magnetic disk drive unit by cutting and folding a portion of the cover. When the cover is attached to a housing body of magnetic material, the cover, the side yoke and the bottom of the housing body form a yoke for voice coil motor. The magnetic flux from a magnet circulates in the yoke and serves to drive a voice coil disposed in a gap of the yoke. The integral formation of the side yoke to the cover contributes to reduction in the number of parts, and leads to a facilitated assembling and manufacturing.