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:
Nov. 06, 2012
Filed:
Jul. 10, 2006
Isao Hirai, Iwata, JP;
Kohei Yoshino, Iwata, JP;
Takayasu Takubo, Iwata, JP;
Kazuhiko Yoshida, Iwata, JP;
Kazukuni Hase, Tokyo, JP;
Hideto Kimura, Tokyo, JP;
Kiyoshi Uwai, Tokyo, JP;
Takaaki Toyooka, Tokyo, JP;
Isao Hirai, Iwata, JP;
Kohei Yoshino, Iwata, JP;
Takayasu Takubo, Iwata, JP;
Kazuhiko Yoshida, Iwata, JP;
Kazukuni Hase, Tokyo, JP;
Hideto Kimura, Tokyo, JP;
Kiyoshi Uwai, Tokyo, JP;
Takaaki Toyooka, Tokyo, JP;
NTN Corporation, Osaka, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A method is directed to a production of a bearing device for a wheel including an inner member and an outer member rotatable relative to each other through a plurality of rolling elements, in which a component part forming one of the inner member and the outer member is a hot forged product. In the practice of this method, during or at the end of a hot forging step for hot forging the component part, a portion of the component part is cooled by spraying a coolant or by controlling an atmospheric temperature, to thereby render a matrix of the component part to represent a standard structure and render a surface portion of the component part to represent a non-standard structure.