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. 04, 2008
Filed:
Aug. 29, 2003
Applicant:
Junshi Sakamoto, Fujisawa, JP;
Inventor:
Junshi Sakamoto, Fujisawa, JP;
Assignee:
NSK, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a wheel supporting rolling bearing unit, both end openings of a space in which ballsare provided are sealed with seal ringseach having two to three seal lips. A rolling resistance that changes based on a preload is regulated in a range of 0.15 to 0.45 N·m, and a total running resistance of both seal ringsbased on a friction between the seal lips and counter surfaces is regulated in a range of 0.06 to 0.4 N·m.