Patent ID: 6932731

Claim:
A tensioner for a traction member, comprising: a faceplate stationarily affixed on a machine part; a support body non-rotatably secured to the faceplate; a torsion spring supported on the support body; a working eccentric member connected with the traction member and supported in encompassing disposition on the support body for limited rotation against a spring force of the torsion spring; a tensioning roller concentrically supported for rotation on the working eccentric member by a bearing that encompasses the support body; at least one damping device disposed between the working eccentric member and a non-rotatable component of the tensioner; and a locking device and a catch, wherein the locking device fixes a position of the working eccentric member relative to the faceplate after an initial installation of the tensioner, and the catch limits a pivot range of the working eccentric member relative to the faceplate in an installed position of the tensioner, wherein one of the working eccentric member and the faceplate has a spring-biased pin and the other of the faceplate and the working eccentric member has an oblong hole, said pin forming the catch which interlocks with the oblong hole when the positions of the pin and the oblong hole overlap.