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. 09, 1999
Filed:
Oct. 23, 1997
Satoru Akutsu, Tokyo, JP;
Kazuya Oda, Tokyo, JP;
Katsumi Kurita, Tokyo, JP;
Hideto Nishimura, Tokyo, JP;
Koichi Okubo, Tokyo, JP;
Hiroshi Ito, Tokyo, JP;
Yukio Izumi, Tokyo, JP;
Hidetada Nagaoka, Tokyo, JP;
Keiichi Nishikawa, Tokyo, JP;
Atsuo Onoda, Tokyo, JP;
Yuji Ohmura, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A flexible disk drive unit including a spindle motor for driving to rotate a magnetic disk; magnetic heads opposing the magnetic disk; a carriage attached to a frame and movable in a radius direction of the magnetic disk; wherein the frame and a motor base constitute a common member and the spindle motor is of a sensorless drive system and is directly attached to the frame; and wherein the frame is provided with an attaching hole for erecting a bearing of the spindle motor of the sensorless drive system on the frame.