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:
Apr. 30, 2002
Filed:
Jul. 17, 2000
Kenichi Shibazaki, Kanagawa, JP;
Tetsu Takehara, Kanagawa, JP;
Shinichi Natsumeda, Kanagawa, JP;
Shoji Noguchi, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
In the roller bearing, between an outer ring ( ) and an inner ring ( ), there are interposed a plurality of tapered rollers ( ) in a freely rollable manner. A flange portion ( ) is formed in the side portion of the inner ring ( ). The undercut allowance ratios of a contact ellipse formed due to mutual contact between the flange portion ( ) and the end face of the roller ( ) is set in the range of −0.6≦(h−b−c)/b≦2, where a grinding undercut dimension on the flange portion ( ) is expressed as c, a contact point height between the flange portion ( ) and the end face of the roller ( ) is expressed as h, and the minor radius of a contact ellipse formed due to contact between the flange portion ( ) and the end face of the roller ( ) is expressed as b.