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:
Dec. 02, 2014
Filed:
Jun. 23, 2011
Yasuhiro Shimizu, Kuwana, JP;
Yasuhiro Shimizu, Kuwana, JP;
NTN Corporation, Osaka, JP;
Abstract
A roller inscribed circle Rdiameter of tapered rollers fitted in pockets of a bearing retainer is such that a circle Rportion protruding radially outwardly of an inner race small flange radially outer surface when the rollers are at radially outermost positions in pockets with an outer race unmounted, and when the circle Ris offset from a raceway circle center of an inner race raceway end at the flange so as to point contact the raceway circle. The circle Rportion which does not radially outwardly protrude from the flange outer surface has a central angle >180° and ≦240°. Flange thickness is such that when the roller inscribed circle is offset from the raceway circle center to point contact the raceway circle, and swung about the contact point toward the flange, the flange does not interfere with the arcuate locus of the roller inscribed circle swing end.