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:
Feb. 06, 2024
Filed:
Dec. 03, 2021
Nsk Ltd., Tokyo, JP;
Hiroshi Kawahara, Kanagawa, JP;
Hiroki Hashiguchi, Kanagawa, JP;
Hirofumi Itagaki, Kanagawa, JP;
Azusa Hidaka, Kanagawa, JP;
Hiroki Nishida, Kanagawa, JP;
Naofumi Fujita, Kanagawa, JP;
Hikari Yoshimi, Kanagawa, JP;
Naohiro Hitomi, Kanagawa, JP;
Masahiro Kita, Kanagawa, JP;
NSK LTD., Tokyo, JP;
Abstract
A frictional roller reducer having a sun roller; a ring roller; a plurality of intermediate rollers having rolling surfaces coming in rolling contact with the sun roller and the ring roller; the sun roller or the ring roller having a pair of roller elements including inclined surface portions on a circumferential surface coming in rolling with rolling surfaces, the inclined surface portions inclined in directions going toward the intermediate rollers in a radial direction as going away from each other in the axial direction; a pressing device pressing the pair of roller elements in directions going closer to each other, and an elastic member arranged between the pair of roller elements, the elastic member urging the pair of roller elements in directions going away from the rolling surface of the intermediate rollers.