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:
Apr. 12, 2016
Filed:
Dec. 23, 2011
Yoshihisa Miura, Yamatokoriyama, JP;
Yoshihisa Miura, Yamatokoriyama, JP;
JTEKT CORPORATION, Osaka, Osaka-shi, JP;
Abstract
A method of manufacturing a power transmission chain pin, which connects links arranged in a chain width direction of a power transmission chain, includes a rough sectional shape formation step of drawing a wire rod so that a section thereof is formed in a substantially oval shape and a rough end portion shape formation step of cutting a continuous bar-like member which has been subjected to the drawing work into a predetermined length so that an end surface thereof has a predetermined angle with respect to an axial direction. A final sectional shape and a final end portion shape of the power transmission chain pin are formed by a cold forging work to the bar-like member cut into the predetermined length, which is a final shape formation step.