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:
Jun. 04, 1996
Filed:
Oct. 05, 1994
Hiroshi Koriyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An arm assembly has a front end portion on which a plurality of magnetic heads opposed to a plurality of magnetic disk media, respectively, for writing/reading information are mounted, a rear end portion having a C shaped arm formed with a pair of holes or recesses having a predetermined depth and a center portion rotatably supported by a rotational shaft through bearings. A coil is fixedly secured to an inside surface of the C shaped arm through an adhesive for driving the arm assembly. A permanent magnet assembly is disposed in a location opposing the coil and constituting a magnetic circuit together with the coil. A pair of stoppers are provided on opposite sides of the C shaped arm with predetermined spaces and adapted to restrict a rotational movement of the C shaped arm by contacting with collision surfaces of the C shaped arm. The holes or the recesses of the C shaped arm may be filled with elastic material having superior vibration attenuating characteristics.