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:
Feb. 04, 2014
Filed:
Feb. 21, 2005
Koji Kawaguchi, Izumi, JP;
Yuzuru Takahashi, Kashiwara, JP;
Kiyoshi Ogino, Kashihara, JP;
Hiroki Matsuyama, Nara, JP;
Koji Kawaguchi, Izumi, JP;
Yuzuru Takahashi, Kashiwara, JP;
Kiyoshi Ogino, Kashihara, JP;
Hiroki Matsuyama, Nara, JP;
JTEKT Corporation, Osaka-shi, Osaka, JP;
Abstract
A tapered roller bearing according to the present invention, in which the rolling surface of a tapered roller and raceway surfaces of internal and outer rings undergoes crowning. The total crowning amount of that crowning and the crowning amount of each raceway surface and rolling surface are set to preferred values. This allows reduction of the rolling friction of the internal and outer rings and the tapered roller, and the rotation torque of the tapered roller bearing according to the present invention.