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:
Dec. 30, 2025
Filed:
Aug. 31, 2021
Nsk Ltd., Tokyo, JP;
Shigeo Shinohara, Gunma, JP;
NSK LTD., Tokyo, JP;
Abstract
An electric power steering device includes an assist pinion shaft, a worm wheel attached to an end part on the Z2 side of the assist pinion shaft, a worm shaft that has shaft teeth meshing with wheel teeth, and a casing that houses the worm shaft and the worm wheel. Among a plurality of parts of the wheel teeth, a first part is a part that meshes with the shaft teeth, and a second part is a part located on the opposite side of the first part with a central axis interposed therebetween. The first distance from an end surface on the Z1 side of the first part to a tip end of a casing end part is greater than the second distance from an end surface on the Z1 side of the second part to a tip end of the casing end part.