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:
Jul. 07, 1987
Filed:
Nov. 28, 1984
Akira Nikaido, Tokyo, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
A linear motor driving a carriage used in a magnetic memory. The motor includes a rotor portion having a hollow sleeve like member extending outwardly from the carriage at the side opposite to the magnetic head mounting portion of the carriage and a driving coil wound around the forward end of the hollow member; and a stator portion on the frame body of the magnetic memory and having a central yoke disposed within the hollow member along the direction of carriage movement, a U-shaped yoke surrounding the driving coil with the legs thereof being parallel to the central yoke, and a pair of permanent magnets mounted on the opposed faces of the legs of the U-shaped yoke. By means of this linear motor, the magnetic memory can be reduced in dimension.