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:
Oct. 25, 2016
Filed:
Sep. 29, 2014
Nakanishi Metal Works Co., Ltd., Osaka-shi, JP;
Yoshihiro Ito, Osaka, JP;
NAKANISHI METAL WORKS CO., LTD., Osaka-shi, JP;
Abstract
A magnetic encoderincluding a support memberattached to a rotating bodyand a magnet memberfixed to the support member, the support memberand the magnetare not attached to each other using an adhesive but the support memberand the plastic magnetare joined together by molding shrinkage or wrap-around form of the magnet, and the material for the magnetis selected such that the value of the ratio ((αp−αm)/εc) of a difference (αp−αm) between flowing-direction linear expansion coefficient (αp) of the magnetand linear expansion coefficient (αm) of the support member, to tensile breaking strain (εc) of the material for the magnetis equal to or less than a value beginning at a threshold (Nth) based on a prescribed value of cycle member at thermal shock destructive test.