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:
Jul. 03, 2001
Filed:
Dec. 07, 1999
Yasuaki Nagai, Kashiwara, JP;
Kenji Shitsukawa, Osaka, JP;
Kenji Asano, Osaka, JP;
Masamichi Shibata, Mie, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
There is provided a roller bearing in which contact stress between a roller and a raceway is uniformized by optimizing a configuration of a clearance between the roller and the raceway. A configuration of an outer circumferential surface (,) of a tapered roller (,) of a tapered roller bearing (,) is defined so that a clearance of Y(x)=kYp(x), which results from multiplying an equation Yp(x) for uniformizing contact stress between infinite-width plate and tapered roller by a positive number k=1.5-10, is formed between the raceway surface (,) and the outer circumferential surface (,) of the tapered roller (,). The tapered roller (,) relaxes concentration of contact stresses, improving the durability.