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. 08, 2026
Filed:
Jul. 27, 2023
Nsk Steering & Control, Inc., Tokyo, JP;
Ikuya Tajima, Gunma, JP;
Takahiro Izumi, Gunma, JP;
NSK STEERING & CONTROL, INC., Tokyo, JP;
Abstract
A worm gear reducer including an elastic urging portion () and an elastic clamping portion (). The elastic urging portion () urges a radially inner side member () toward a worm wheel () side. The elastic clamping portion () has a pair of clamping plate springs () that are disposed on both sides of the radially inner side member () in a third direction, in a portion between an outer circumferential surface of the radially inner side member () and an inner circumferential surface of a radially outer side member (). Each of the clamping plate springs () exhibits a non-linear spring characteristic in which a spring constant increases as a deflection amount in a direction including a third-direction component increases.