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. 30, 2016
Filed:
Mar. 11, 2013
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Yuichi Kobayashi, Sagamihara, JP;
Takeshi Murakami, Zama, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
Abstract
A steel base material () is subjected to a quenching step, a machining step, a plating step, and a tempering step to form a rod (). In the quenching step, two axially spaced portions of the steel base material are quenched to form quenched portions (and). In the machining step, plastic working or cutting is performed on a portion of the steel base material between the two quenched portions to form a full-circumferential groove (C) in a machined portionC. In the plating step, the quenched portion () is not plated, but a region of the steel base material including the quenched portion () is plated to form a coating layer (). In the tempering step, the quenched portions are tempered.