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. 13, 2018
Filed:
Mar. 09, 2009
Kiyotake Shibata, Iwata, JP;
Hirai Isao, Iwata, JP;
Kobayashi Keizo, Iwata, JP;
Eiji Hora, Nishimuro-gun, JP;
Kiyotake Shibata, Iwata, JP;
Hirai Isao, Iwata, JP;
Kobayashi Keizo, Iwata, JP;
Eiji Hora, Nishimuro-gun, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A wheel bearing device includes a hub wheel and a wheel bearing press-fitted onto the hub wheel. A clearance is formed between at least one inner race and the hub wheel such that the at least one inner race is out of contact with the hub wheel at a position where an action line intersects with the hub wheel, the action line being a contact angle of the balls on the outboard side with the at least one inner race. A large-diameter side radially inner surface of the at least one inner race is formed as a curved surface opposed to the inner rolling surface of the at least one inner race. An axial dimension La of a corner portion of the hub wheel is 1.5 times or more as large as a radial dimension Lr thereof.