Patent ID: 8747263
Filing Date: 2014-06-10
Classification: F16H

Abstract:
1. A transmission guide for sliding engagement with a traveling transmission chain, the guide comprising: a synthetic resin shoe having a front surface on which said chain can slide, and a back surface; a synthetic resin base for supporting said shoe, said base being elongated along the direction of elongation of the shoe, and having a supporting surface engaged with said back surface of the shoe, the base having a higher rigidity than that of the synthetic resin shoe, and said shoe and base being integrally molded by two member molding; wherein the synthetic resin base is provided with a pair of spaced, opposed walls extending along the direction of elongation of the base, that sandwich both sides of at least a portion of the synthetic resin shoe located between said walls; wherein each of said walls of the synthetic resin base has a wall surface that extends along the direction of elongation of the shoe, and a plurality of shoe-engaging concave indentations in said wall surface, disposed at intervals along the direction of elongation of the shoe, and in which the shoe has a plurality of protrusions on each of its side edges, each of said protrusions extending into one of said indentations; and wherein each of said indentations has an opening through which a protrusion of the shoe extends, said opening being defined by a pair of edges spaced from each other in the direction of elongation of the shoe and extending substantially perpendicular to an adjacent part of said supporting surface of the base, and wherein at least one of the edges of each said pair of edges has a shape from the group consisting of chamfers and convex curves whereby the opening of each indentation is tapered.