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. 29, 2003
Filed:
Oct. 31, 2000
Isamu Takehara, Chiba, JP;
Seiko Seiki Kabushiki Kaisha, , JP;
Abstract
A motor armature which allows assembly works to be facilitated and which can be miniaturized and thinned is provided. An inner cylinder and an outer cylinder are disposed coaxially and a plurality of pole pieces are provided radially at equal intervals between the inner cylinder and the outer cylinder . The inner cylinder is formed into a cylindrical shape by curling up in the longitudinal direction a hoop member (band steel) made of a magnetic material and having a predetermined thickness and length. The outer cylinder is made of the hoop member similarly to the inner cylinder . The pole piece is what a coil is wound around a wire piece obtained by cutting a wire (wire rod) made of a magnetic material and having a predetermined thickness into a predetermined length. One end of the wire piece is fixed to the outer peripheral face of the inner cylinder by means of welding or the like and the other end of the wire piece is fixed to the inner peripheral face of the outer cylinder