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. 19, 2013
Filed:
Aug. 30, 2007
Tatsuo Wakabayashi, Fujisawa, JP;
Tatsuo Wakabayashi, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A wheel supporting roller bearing in which a pitch circle diameter of an outboard row is larger than a pitch circle diameter of an inboard row. Thermally-hardened layers are formed, at two locations along an axial direction, in portions of an inner circumferential surface of an outer ring including outer ring raceways. The thermally-hardened layers are separated from each other by an unhardened portion in an axially middle portion of the outer ring. A non-cylindrical curved portion having an arcuate generatrix is provided on the axially middle portion of the inner circumferential surface of the outer ring between the outer ring raceways. A thickness of the thermally-hardened layer in the portion including the outer ring raceway on an axially outer side is larger than a thickness of the thermally-hardened layer in the portion including the outer ring raceway on the axially inner side.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile