Patent 8007385 was granted and assigned to Tsubakimoto Chain on August, 2011 by the United States Patent and Trademark Office.
In a sliding contact chain guide of the kind used in the timing transmission of an internal combustion engine, the back of the guide shoe, which engages a metal guide base, is formed with two, spaced longitudinal ribs, having between them a set of ribs formed in a lattice. The longitudinal ribs are wider than the ribs of the lattice.