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. 23, 2007
Filed:
Apr. 11, 2002
Osamu Tatewaki, Gunma-ken, JP;
Hiroshi Eda, Gunma-ken, JP;
Toshihiro Fukuda, Gunma-ken, JP;
Jun Okada, Gunma-ken, JP;
Osamu Tatewaki, Gunma-ken, JP;
Hiroshi Eda, Gunma-ken, JP;
Toshihiro Fukuda, Gunma-ken, JP;
Jun Okada, Gunma-ken, JP;
NSK, Ltd., Tokyo, JP;
Abstract
An electric power steering apparatus comprises a rotary shaft member connected to a steering wheel, an elongate member, a rack-and-pinion mechanism, a ball screw mechanism constructed of a screw member, a nut member and a multiplicity of balls interposed between the screw member and the nut member, an electric motor unit, and a meshing type rotation decelerating mechanism including a plurality of meshing components. The meshing components include an output shaft pinion gear, a deceleration gear, and an intermediate gear, interposed between the output shaft pinion gear and the deceleration gear, having a contact portion composed of a synthetic resin.