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:
Jul. 22, 2008
Filed:
Aug. 24, 2004
Kenta Nakano, Maebashi, JP;
Ryoichi Sato, Maebashi, JP;
Hiroki Yamaguchi, Hanyu, JP;
NSK Ltd., Tokyo, JP;
NSK Precision Co., Ltd., Tokyo, JP;
Abstract
A linear guiding device where noise characteristics are improved by reducing traveling noise and operability of a slider body is smoothed, and where movement braking can be improved by reducing rolling body passage vibration. Crowningwith a curved surface having a predetermined curvature radius R is provided on an end section of a rolling body raceway grooveof a bearing block. A crowning amount C of the crowningis set to a value C>Hgreater that the value of a maximum elastic deformation amount Hof a rolling body B elastically deformed in a rolling body rolling pathby a preload or an external load. By this, even when a large load acts on a bearing blockA or a large installation error occurs by skewing etc., the rolling body B smoothly rolls without an elastic deformation amount of the rolling body B rolling on the end section side of the rolling body raceway groovebecoming greater than the crowning amount C. As a consequence, significant worsening of a noise level and impairment of operability can be prevented.