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:
Aug. 25, 2009
Filed:
Oct. 21, 2004
Soichiro Kato, Maebashi, JP;
Nobuhide Kurachi, Fujisawa, JP;
Masaru Akiyama, Fujisawa, JP;
Jun Matsumoto, Fujisawa, JP;
Soichiro Kato, Maebashi, JP;
Nobuhide Kurachi, Fujisawa, JP;
Masaru Akiyama, Fujisawa, JP;
Jun Matsumoto, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A linear guide device has a retaining piece () between two adjacent rollers (). The retaining piece () has a retaining piece body () having left side-face section and a right side-face section that are parallel to the end face sections of the rollers (), a first arm section () extending from the left side-face section of the retaining piece body () toward the end face sections of the two adjacent rollers () and fitting in a first guide groove () formed in one wall surface section of a circulation path (), and a second arm section () provided on the right side-face section of the retaining piece body () so as to be parallel to the first arm section () and fitting in a second guide groove () formed in the other wall surface section of the circulation path (). The heights of the retaining piece body () and the arm sections () satisfy the conditional expression of (H−H)/2<(Dw−W)/2, where His the height of the retaining piece body (), in the direction perpendicular to the axial direction of a roller; Hthe height of the arm sections () in the direction perpendicular to the axial direction of the roller; W the width of the guide grooves () in the direction perpendicular to the axial direction of the roller; and Dw the diameter of the roller ().