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:
Aug. 06, 1991
Filed:
Aug. 28, 1989
Akihiro Isomura, Oome, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An apparatus for driving a disk-type recording medium includes a base plate including a magnetic material, a spindle mechanism, formed on the base plate, for rotating the recording medium, and a controller for controlling the spindle mechanism. An insulating film is formed on the base plate, and an electric wiring pattern is formed on the insulating film. The spindle mechanism includes stator coils magnets, a rotor, a bearing, and a spindle shaft. The stator coils and the bearing are fixed on the base plate, the magnets are fixed on the rotor, the rotor is fixed on the spindle shaft, the spindle shaft is supported by the bearing, and the stator coils are connected to the writing pattern. Parts of the controller are mounted on the base plate and connected to the wiring pattern. With this arrangement, the entire apparatus can be made thin, mounting positional precision of the respective parts can be improved, workability is improved, and therefore a manufacturing cost can be reduced.