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. 11, 2003
Filed:
Dec. 22, 2000
Applicant:
Inventors:
Takanori Kurokawa, Yamatokooriyama, JP;
Hirokazu Arai, Yamatokooriyama, JP;
Assignee:
Koyo Seiko Co., Ltd, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 5/548 ;
U.S. Cl.
CPC ...
F16H 5/548 ;
Abstract
In an electric power steering device, the rotation of an electric actuator for generating auxiliary steering power is transmitted to a vehicle wheel by way of a worm and a worm wheel. The worm wheel is molded from a synthetic resin material. The relative viscosity (VR) of the molded worm wheel is made greater than or equal to 100 and less than or equal to 300.