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:
Mar. 17, 2009
Filed:
Jan. 24, 2005
Shinji Morita, Shizuoka-ken, JP;
Hisashi Ohtsuki, Shizuoka-ken, JP;
Shinji Morita, Shizuoka-ken, JP;
Hisashi Ohtsuki, Shizuoka-ken, JP;
NTN Corporation, Osaka-Fu, JP;
Abstract
A wheel axle bearing unit for a vehicle is to be made lighter in weight, so as to prolong a life span thereof. A first grooved portion is formed by removing an excess in thickness in a region between dual raceways on an outer circumferential surface of a hub and an inner race which constitute the inner member of the wheel axle bearing unit, for enlarging a space inside the bearing, thereby increasing an amount of grease that can be retained in the region between the dual raceways. Also at a position corresponding to the first grooved portion, a second grooved portion is formed by removing an excess in thickness on an inner circumferential surface of an outer race, which constitutes an outer member.