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:
Nov. 13, 2018
Filed:
Feb. 20, 2012
Yasuaki Aoyama, Tokyo, JP;
Akiyoshi Komura, Tokyo, JP;
Yasuaki Aoyama, Tokyo, JP;
Akiyoshi Komura, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Provided is a highly responsive linear motor that can be constructed by reducing the weight of a mover. In order to attain this object, the linear motor includes a secondary side in which magnets and ladder-shaped members of a magnetic material are arranged in alternate manner in a rectilinearly moving direction of the mover, the ladder-shaped members each holding one of the magnets; and a primary side that includes magnetic pole pieces arranged in close proximity to the secondary side from above and below in a direction perpendicular to the rectilinearly moving direction with a common coil wound around each of the magnetic pole pieces, the primary side including a magnetic material core interconnecting the magnetic pole pieces; wherein the ladder-shaped members of a magnetic material are formed with grooves.