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. 22, 2019
Filed:
Jul. 28, 2015
Neturen Co., Ltd., Tokyo, JP;
Takashi Kato, Tokyo, JP;
Takashi Yamawaki, Tokyo, JP;
NETUREN CO., LTD., Tokyo, JP;
Abstract
Provided are a method of manufacturing a hollow rack bar including a rack portion that is engaged with a pinion gear and faces supported by a yoke easily and accurately, and the hollow rack bar. The hollow rack bar () includes: the rack portion () engaged with the pinion gear (); and the supported faces () provided on a back side of teeth of the rack portion () and supported by the yoke (). The rack portion () is formed by locating a toothed mold () on an outer face of a circular tube material, and inserting a cored bar () into the circular tube material to pressurize an inner face, thereby transferring a shape of the toothed mold (). The supported faces () are formed by removal processing or deformation processing of a back side of the teeth rack portion () of the circular tube material.