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:
May. 15, 2012
Filed:
Jun. 10, 2010
Masanobu Kakihara, Kitakyushu, JP;
Toru Shikayama, Kitakyushu, JP;
Motomichi Ohto, Kitakyushu, JP;
Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;
Abstract
A linear motor armature includes a plurality of armature core blocks that are linearly connected to each other, each armature core block being formed of a stack of a plurality of armature cores that are substantially I-shaped, each armature core block including teeth portions around which armature coils are wound, the teeth portions being provided in two end portions of the armature core block in a longitudinal direction of the armature core block, and a step portion extending in a direction perpendicular to the longitudinal direction of the armature core block, the step portion being provided at a center of the armature core block and having a width larger than a width of the teeth portions, wherein an attachment hole for fixing each of the plurality of armature core blocks to an external armature attachment plate is formed in each of two side portions of the step portion.