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:
Aug. 03, 1999
Filed:
Feb. 04, 1997
Yoshiharu Yamada, Tokyo, JP;
Kyoichi Okamoto, Tokyo, JP;
Yoshihiro Morimoto, Tokyo, JP;
Akira Morishita, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A manufacturing method of a cylindrical yoke including a bottom portion to which an opening 12a is formed to journal the starter output shaft of a planetary gear-type starter incorporating a planetary gear reducer, and an inner peripheral gear portion formed to the vicinity of the bottom portion, the yoke functioning as the field magnet of a motor in the planetary gear-type starter. The yoke is formed by subjecting a metal disk 10 to cold spinning. As a result the inner peripheral gear portion of the yoke and a thin portion can be easily formed and miniaturization, reduction in weight and cost reduction are realized.