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:
Nov. 14, 2017
Filed:
Jul. 07, 2014
Nsk Ltd., Shinagawa-ku, Tokyo, JP;
Kimiko Nakai, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
The present invention achieves construction for a seal ring-equipped ball bearing () that allows the outer-diameter dimension of a load-bearing surface () to be made large, allows a large contact area with a transmission gear () to be secured, and allows dynamic torque to be reduced. Seal lips () of seal rings () that cover opening sections on both sides of the seal ring-equipped ball bearing () have a substantially horizontal V-shaped cross-section and are configured so that an outer-diameter-side inclined section () and an inner-diameter-side inclined section () are connected by a continuous portion (). The inner-circumferential edge section of the inner-diameter-side inclined section (), which is the tip-end edge of the seal lip (), is made to slide over the entire circumference of the outer peripheral surfaces of both end sections of an inner ring (), the end sections being cylindrical surfaces () without seal grooves. The angle (α) of an inside-continuous surface () of the continuous portion () is at least 104°, and the overall length of the inner-diameter-side inclined section () is kept long by the continuous portion () entering radially inward into a wave-shaped retainer ().