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:
Jul. 27, 2004
Filed:
Mar. 03, 2003
Takanori Kurokawa, Yamatokooriyama, JP;
Hirokazu Arai, Yamatokooriyama, JP;
Shinichi Tahara, Hikone, JP;
Syouji Sawai, Hikone, JP;
Other;
Abstract
An electric power steering apparatus including a reduction mechanism for transmitting an output of a steering assist motor to a steering mechanism through a worm and a worm wheel , in which the worm wheel is formed by a thermosetting synthetic resin filled with a sheet of aramid fibers having a low attacking property to a counter member and an effect of improving the abrasion resistance of the synthetic resin. Even when the reduction mechanism is used in an engine room or the temperature of the reduction mechanism is raised by frictional heat with heightening power, the reduction mechanism is durable, and further the gears have excellent abrasion resistance and toughness and improved durability.