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:
Feb. 18, 2003
Filed:
Jul. 13, 2001
Soichiro Kato, Gunma, JP;
Yutaka Igarashi, Gunma, JP;
NSK Ltd., Tokyo, JP;
Abstract
In a linear guide which includes a guide rail, a slider and a plurality of rolling elements. The guide rail has at its outer surfaces rolling element rolling grooves extending in the axial direction thereof. The slider is assembled to the guide rail and has rolling element rolling grooves opposing to the rolling element rolling grooves of the guide rail. The plurality of rolling elements are filled within rolling element rolling paths formed by both the rolling grooves so as to toll freely therein. At least a part of the rolling element rolling grooves of the guide rail and the slider has a surface having the average roughness Ra along the center line of 0.20 &mgr;m or less, to thereby provide a linear guide in which reduction of a sliding resistance and generation of powder due to the abrasion caused by the initial abrasion is hardly caused.