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:
Apr. 30, 1991
Filed:
Oct. 19, 1988
Akihiro Isomura, Tokyo, JP;
Toshihiro Sugaya, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An access mechanism includes a fixed generating section for generating a first magnetic field, and a carriage, having at least one head, for generating a second magnetic field so as to be moved together with the head in accordance with a propulsive force generated by interaction between the first and second magnetic fields. The center of gravity of the carriage is substantially located on a line along which the propulsive force acts. The carriage includes a coil for generating the second magnetic field in accordance with a supplied current. The generating section and the coil constitute a voice coil motor. The access mechanism further includes a rail member arranged in a moving direction of the carriage, and a base member, coupled to the carriage and movably engaged with the rail member through bearings, for guiding movement of the carriage driven by the voice coil motor.