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:
Sep. 10, 2019
Filed:
Sep. 22, 2017
Ntn Corporation, Osaka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A tapered roller bearing () has a plurality of retainer segments () each having a pocket to house a tapered roller (), and arranged so as to be continuously lined with each other in a circumferential direction between an outer ring () and an inner ring (). The retainer segment () is formed of a resin containing a filler material to lower a thermal linear expansion coefficient. In addition, a clearance () is provided between the first retainer segment () and the last retainer segment () after the plurality of retainer segments () have been arranged in the circumferential direction without providing any clearance. Here a circumferential range (R) of the clearance () is larger than 0.075% of a circumference of a circle passing through a center of the retainer segment () and smaller than 0.12% thereof at room temperature.