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. 02, 2003
Filed:
Jul. 05, 2001
Hiroki Yamaguchi, Gunma, JP;
Ryoichi Sato, Gunma, JP;
Shinichi Kasuga, Gunma, JP;
Kenji Kano, Gunma, JP;
Soichiro Kato, Gunma, JP;
Nobuaki Fujimura, Gunma, JP;
NSK Ltd., Tokyo, JP;
Abstract
A linear guide device in which a rate of change expressed as “Dmax−Dmin”, becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dx2−dx1)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dx1 is a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling grooves and of an element endless circulating raceway to one of curved element circulating R parts and dx2 is a minute movement quantity of another steel ball B when it moves from the other curved element circulating R part to the space while the former steel ball is moved by the minute movement quantity dx1.