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:
Jun. 09, 2015
Filed:
Mar. 30, 2011
Hideyuki Tsutsui, Mie, JP;
Kouya Oohira, Mie, JP;
Naoko Ito, Mie, JP;
NTN CORPORATION, Osaka, JP;
Abstract
The present invention provides a rolling bearing in which the peeling resistances of a DLC film formed on raceway of inner and outer rings and a sliding surface of a cage are improved to allow the intrinsic properties of the DLC film to be displayed so that the rolling bearing is excellent in its resistance to seizing, wear, and corrosion. A rolling bearing () has an inner ring (), an outer ring (), a plurality of rolling elements (), and a cage (). A hard film () is formed on a curved surface such as a raceway () of the inner ring (), a raceway () of the outer ring (), and the like. The hard film () is composed of a foundation layer, composed mainly of Cr, which is formed directly on the curved surface.