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:
May. 30, 2006
Filed:
Sep. 23, 2002
Takayuki Kawamura, Kuwana, JP;
Hidenobu Mikami, Kuwana, JP;
Mitsunari Asao, Kuwana, JP;
Yuji Oonuki, Fujisawa, JP;
Toshiaki Endo, Fujisawa, JP;
Takayuki Kawamura, Kuwana, JP;
Hidenobu Mikami, Kuwana, JP;
Mitsunari Asao, Kuwana, JP;
Yuji Oonuki, Fujisawa, JP;
Toshiaki Endo, Fujisawa, JP;
NTN Corporation, Osaka, JP;
Kyodo Yushi Co. Ltd., Tokyo, JP;
Abstract
Disclosed is a grease that provides a prolonged lubricating lifetime to applied portions for use at high temperature, and a grease sealed bearing in which the bearing is sealed with this grease. This grease comprises a base oil, a thickener, and an amide-based wax. The amide-based wax is contained in an amount of 0.5 to 10% by weight based on the total amount of the grease, has a melting point of 80° C. or more, and an antioxidative ability to the base oil. The base oil is at least one base oil selected from the group consisting of an ether-based oil, an ester-based oil and a synthetic hydrocarbon oil, and has kinematic viscosity of 20 to 150 mm/s at 40° C. The thickener is an urea-based thickener, and is contained in an amount of 5 to 30% by weight based on the total amount of the grease.