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:
Jul. 06, 2010
Filed:
Oct. 24, 2008
Kazuo Komori, Iwata, JP;
Kazuhiro Baba, Iwata, JP;
Kazunori Kubota, Iwata, JP;
Takayuki Norimatsu, Iwata, JP;
Akira Fujimura, Iwata, JP;
Shinji Morita, Iwata, JP;
Kazuo Komori, Iwata, JP;
Kazuhiro Baba, Iwata, JP;
Kazunori Kubota, Iwata, JP;
Takayuki Norimatsu, Iwata, JP;
Akira Fujimura, Iwata, JP;
Shinji Morita, Iwata, JP;
NTN Corporation, , JP;
Abstract
A vehicle wheel bearing apparatus has an outer member with a body flange and double row outer raceway surfaces. An inner member includes a wheel hub and an inner ring. They include inner raceway surfaces arranged opposite to the double row outer raceway surfaces. Double row rolling elements are freely rollably contained between the outer and inner raceway surfaces. Outer side rolling elements of the double row rolling elements are balls and inner side rolling elements of the double row rolling elements are tapered rollers. A pitch circle diameter of the inner side tapered rollers is set smaller than that of the outer side balls. A substantially conical recess is formed at an outer side end portion of the wheel hub. The depth of the recess extends to at least near the bottom of the inner raceway surface of the wheel hub. The thickness of a portion of the wheel hub where the inner raceway surface is formed is set within a predetermined range. The outer side wall of the wheel hub has a constant thickness substantially along the inner surface of the recess.