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:
Sep. 28, 2004
Filed:
Dec. 07, 2001
Takeo Ohkuma, Fujisawa, JP;
Eishi Shibuya, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A rolling-bearing unit for wheel support comprising an outer-race with a double row of tapered and concave-shaped outer-ring raceways, a hub comprising a hub body with an outside inner-ring raceway and a separate inner-race with an inside inner-ring raceway, and a tapered rollers between the inner-ring raceways and the outer-ring raceways respectively, the hub body formed with a cylindrical section, and a support-step section which the separate inner-race is fitted onto, the cylindrical section plastically deformed radially outward to form a crimped section, the support-step section formed with a step surface, one end surface of the separate inner-race abutted to the step surface while the other end surface retained by the crimped section, the inner-ring raceway of the separate inner-race connected to the side surface of the large-diameter-side collar section through a connecting portion which is provided with a grinding-relief groove, and wherein the contact area between the other end surface of the separate inner ring and the crimped section has a maximum diameter smaller than the diameter defined by the bottom of the grinding-relief groove.