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:
Dec. 09, 2008
Filed:
May. 26, 2005
Noriko Uchiyama, Kanagawa, JP;
Keizo Otani, Kanagawa, JP;
Mitsuhiro Okuhata, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A rolling element including a base metal, and a nickel coat formed on a surface of the base metal and cooperating with the base metal to constitute a rolling contact surface satisfying condition that a mean value of ratios of Lto Las measured in at least three optional observation areas is in a range of from 1.2 to 2.4, where each observation area is disposed in a cross section taken in a vertical direction relative to the surface of the base metal and is defined by two parallel vertical lines; lengths Land Lrespectively represent a length of an interface between the base metal and the nickel coat, and a length of a reference line segment extending perpendicular to the vertical direction, in same observation area.