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:
May. 06, 2025
Filed:
Feb. 21, 2022
Nsk Ltd., Tokyo, JP;
Hironori Suzuki, Fujisawa, JP;
Takuya Oyama, Fujisawa, JP;
NSK LTD., Tokyo, JP;
Abstract
A ball bearing includes an inner ring, an outer ring, a plurality of balls rollably disposed between an inner ring raceway surface of the inner ring and the outer ring raceway surface of the outer ring, and a cage in which pockets rollably holding the balls are formed at intervals in a circumferential direction. An inclination angle of a cylindrical surface of each of the pockets is set more than 0° and less than a contact angle of the ball bearing, the cylindrical surface and a corresponding ball are in contact with each other at an inner side in a cage thickness direction relative to a position where a rotation axis of the ball intersects with the cylindrical surface, and a space is formed at a portion from a contact position to a circumferential surface of the cage on a side closer to the intersection position.