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:
Sep. 26, 1995
Filed:
Mar. 30, 1994
Akira Nishio, Fujieda, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
The specification discloses a disc driving device having a spindle motor for driving a storage disc with a hub mounted on a spindle of the spindle motor in a sealed housing. The spindle motor comprises the spindle, a stator frame for supporting the spindle with bearings therebetween and a core assembly fitted over the stator frame. The core assembly comprises a laminated core subjected to an electroless metal plating, an insulator generally covering the laminated core, which insulator has projections for fixing a flexible board and retainers for holding winding coils on the laminated core. The sealed housing comprises a housing having a concave portion at the bottom thereof. The concave portion comprises a upper portion having a concave wall and a lower portion having a cylindrical wall coupled to the upper portion. The stator frame is fixed in the lower portion, and a part of the hub is positioned in the upper portion. Further, a trench is provided on the concave wall of the upper portion for holding the flexible board in place so as not to disturb the rotation of the hub in the sealed housing.