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:
Oct. 15, 2024
Filed:
Mar. 04, 2022
Nsk Ltd., Tokyo, JP;
Takashi Murai, Fujisawa, JP;
Yoshinari Kagota, Fujisawa, JP;
NSK LTD., Tokyo, JP;
Abstract
A roller includes chamfered portions and roller inclined surfaces formed on both axial ends of a roller outer circumferential surface. When in a cross section taken along a plane including a rotation axis of the roller and a bearing central axis, an intersection angle between a tangent line of the roller inclined surface at the first position of the roller inclined surface corresponding to an end portion of a guide surface and a perpendicular line of the rotation axis is defined as α, an intersection angle between a tangent line of the roller inclined surface at the second position corresponding to a boundary between the chamfered portion and the roller inclined surface and a perpendicular line of the rotation axis is defined as β, and an intersection angle between the guide surface and a perpendicular line of the bearing central axis is defined as θ, α<θ<β is satisfied.