Patent ID: 8469845
Filing Date: 2013-06-25
Classification: F16G

Abstract:
1. A chain transmission comprising: a chain comprising a plurality of link plates each having front and rear connecting holes, the link plates being pivotably connected to one another; and a guide member; each of the link plates having an edge arranged for sliding contact with the guide member; in which said edge of at least one of said link plates has a continuous convex curvature extending at least from a point on said edge intersected by a line perpendicular to a connecting line through the centers of said front and rear connecting holes and extending through one of said centers to a point on said edge intersected by a line perpendicular to said connecting line and extending through the other of said centers, and the distance measured perpendicularly from a point on a line connecting the centers of the front and rear connecting holes to said edge is a maximum when said point is spaced from a location midway between the centers of the front and rear connecting holes, whereby said at least one said link plate has an asymmetric shape about a plane midway between said connecting holes and to which said connecting line is perpendicular.