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:
Aug. 20, 2013
Filed:
Oct. 14, 2009
Ryuji Nakata, Osaka, JP;
Miwa Hokii, Kariya, JP;
Mitsuhiro Kakizaki, Hiratsuka, JP;
Daisuke Tsutsui, Fujisawa, JP;
Ryuji Nakata, Osaka, JP;
Miwa Hokii, Kariya, JP;
Mitsuhiro Kakizaki, Hiratsuka, JP;
Daisuke Tsutsui, Fujisawa, JP;
JTEKT Corporation, Osaka-Shi, JP;
Kyodo Yushi Co., Ltd., Fujisawa-Shi, JP;
Abstract
A lubricant composition, which is low in friction, does not have an attacking property against polyamide resin, etc., is excellent in heat resistance, and especially does not undergo deterioration or loss of the respective characteristics in a short term when used under a high temperature environment, is provided along with a speed reduction gear and an electric power steering apparatus that use the lubricant composition. The lubricant composition has blended therein a synthetic hydrocarbon oil, a urea thickener, zinc stearate, and a sulfur-based antioxidant. A speed reduction gear has a portion of engagement of a small gear and a large gear filled with the lubricant composition. In an electric power steering apparatus, an output of a steering assisting electric motor is speed reduced and transmitted to a steering mechanism via the speed reduction gear.