Patent ID: 8308588

Claim:
A tight side tensioning guide for a timing chain drive system of an internal combustion engine, the system having a drive wheel, at least one driven wheel and a chain connecting the drive wheel and driven wheel, the guide positioned on the tight side between the drive wheel and the driven wheel, the guide comprising: a guide rail having a guide surface for the chain on one side of the rail; a drive end facing the drive wheel; a driven end facing the driven wheel; a drive end mounting hole for a drive end mounting bolt and driven end mounting hole for a driven end mounting bolt, the drive end mounting hole and the driven end mounting hole being on the other side of the rail; and a single rubber element positioned entirely within the drive end mounting hole and having a bore for the drive end mounting bolt, wherein the rubber element extends axially through the drive end mounting hole and includes a rubber ring and a corrugated rubber sleeve, the ring extending radially outwardly from the corrugated rubber sleeve, the sleeve has an outer and an inner profile that both consist of a series of peaks and valleys.