Patent ID: 6626572
Filing Date: 2003-09-30
Classification: F16C

Abstract:
A roller chain adapted to be mounted to a linear roller guide device including a track rail and a movable block assembled to the track rail through a number of rollers, comprising:said roller chain being a belt-shaped member having flexibility in which said rollers are arranged in a shape of a chain, and said roller chain is adapted to be inserted to move in an endless circulation passage formed by a loaded area between a roller rolling surface of the movable block and a roller rolling surface of the track rail, direction changing passages and a roller returning passage; a plurality of spacer portions disposed between respectively adjacent rollers so as to support the rollers; and a connection member connecting the respective spacer portions; wherein each of the spacer portions has two sides being a concavo-concave shape and top and bottom sides being a rectangular shape and wherein each of the spacer portions has a plurality of concave portions having a spherical curvature that is the same as a spherical curvature of the rollers so as to complementally accommodate the rollers and the roller chain has two ends that are not connected.