Patent ID: 8900079
Filing Date: 2014-12-02
Classification: F16H

Abstract:
1. A transmission guide comprising: an elongated synthetic resin shoe having a sliding contact surface on which link plates of a transmission chain can travel in a longitudinal direction and a back surface; and an elongated synthetic resin base having a supporting surface for supporting said shoe by engagement with said back surface of shoe, the rigidity of the base being greater than the rigidity of the shoe; wherein the shoe is integrally molded with the base by two-member molding whereby the shoe and base are fused together; wherein the guide includes a guide length retaining mechanism, formed on the back surface of the shoe and the supporting surface of the base, for retaining the shoe against longitudinal movement relative to the base; wherein the guide length retaining mechanism is composed of at least one convex protrusion protruding from the back surface of the shoe and at least one concave recess formed the supporting surface of the base, each said protrusion being disposed in one said concave recess; wherein the guide also includes a guide width retaining mechanism, formed on side edges of the shoe and side portions of the base, for retaining the shoe against widthwise movement relative to the base; wherein the synthetic resin shoe has opposite side edges, and is formed with a plurality of concave recesses in its sliding contact surface, said recesses being disposed along a longitudinal center line between said side edges; and wherein at least one of said concave recesses in the sliding contact surface of the shoe is located directly opposite said at least one convex protrusion protruding from the back surface of the shoe.