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:
Jun. 22, 2010
Filed:
Jan. 23, 2004
Katsunori Takada, Aichi, JP;
Koichiro Inoue, Aichi, JP;
Katsushi Goto, Osaka, JP;
Atsuhiko Ohta, Nara, JP;
Tomoyuki Takei, Osaka, JP;
Katsunori Takada, Aichi, JP;
Koichiro Inoue, Aichi, JP;
Katsushi Goto, Osaka, JP;
Atsuhiko Ohta, Nara, JP;
Tomoyuki Takei, Osaka, JP;
JTEKT Corporation, Chuo-ku, Osaka, JP;
Abstract
A steel for use in high strength pinion shaft which is not refined and used by applying high frequency hardening, with less occurrence of peeling during hobbing, having high surface hardness, impact value and torsional strength after high frequency hardening, and with less heat treatment strains during high frequency hardening, containing, on the mass % basis; C: 0.45-0.55%, Si: 0.10-0.50%, Mn: 0.50-1.20%, P: 0.025% or less, S: 0.025% or less, Mo: 0.15-0.25%, B: 0.0005-0.005%, Ti: 0.005-0.10%, and N: 0.015% or less, satisfying: 0.80≦Ceq 0.95 and f value≦1.0, and the balance of Fe and inevitable impurities, as well as a manufacturing method thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile