Patent ID: 8202184

Claim:
A hydraulically activated tensioning system for a traction mechanism for an internal combustion engine which has a fluid bore, the tensioning system comprising: a fixed housing intended to receive and guide a piston such that a hydraulic fluid is applied to the piston and the piston interacts directly or indirectly with a tensioning rail that is supported on a traction means, the housing comprising: a cylinder space with a base extending therein; a feed bore, which extends from the base of the cylinder space, providing a direct connection between the cylinder space of the housing and the fluid bore in the internal combustion engine for transfer of the hydraulic fluid into the cylinder space; at least a first side face of the fixed housing having a first surface and a second side face of the fixed housing face having a second surface; at least one screw-on dome extending from the housing transverse to the cylinder space; a through bore intended for an attachment screw extending through the screw-on dome, transverse between the first side face and the second side face of the housing and transverse to the cylinder space; an entirely uniform, arcuately shaped, feed duct extending between the feed bore and the through bore in the first side face of the housing; and at least one transverse groove formed in the second side face of the housing, perpendicular to the through bore and connected to the through bore, having a spray nozzle, with a partial quantity of the hydraulic fluid being directed from the feed bore, via the feed duct into the through bore, and emerging from the spray nozzle to lubricate the traction mechanism drive.