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. 17, 2001
Filed:
Nov. 30, 1999
Hiroshi Teramachi, Shinagawa-ku, Tokyo-to, JP;
Other;
Abstract
A guide rail (,) has an upper surface (,) with a pair of upper rolling paths (,) and side surfaces (,) with a pair of side rolling paths (,). The upper rolling paths (,) are concave surfaces inclined downward toward a longitudinal middle portion with respect to width of the guide rail (,) and extending along arcs of a circle. A moving block (,), provided with a groove (,) receiving the guide rail (,) therein, is mounted on the guide rail (,) so as to straddle the rail. A plurality of upper rollers (,) are supported in rows on the moving block (,) so as to roll along the upper rolling paths (,). The upper rollers (,) each has a convex side surface (35,). A plurality of side rollers (,) are supported in rows on the moving block (,) so as to roll along the side rolling paths (,). Even if a lateral force acts on the moving block due to a positional error in the guide rail, the rollers are able to roll smoothly and the smooth traveling of the moving block is insured.