Patent ID: 7544130

Claim:
A mechanical coupling system for coupling a first rotating member to a second rotating member, comprising: a flexible element configured to transmit torque; and a first hub assembly configured to be secured to the first member, the hub assembly including: a hub having a retaining face and an outside diameter presenting an anti-rotation feature and screw threads wherein the anti-rotation feature includes an external flat located on the outside diameter of the hub; a flange having first and second axially opposite sides with an inner surface disposed therebetween, the flange inner surface having an internal flat configured to engage the hub outside diameter external flat to prevent relative rotational movement between the hub and the flange when the flange is assembled with the hub, the flange first side having an engagement surface extending substantially around the flange first side configured to engage the flexible element when the hub assembly is assembled with the flexible element; and an adjusting nut configured to engage the hub outside diameter screw threads and further configured to abut the flange second side and urge the flange first side engagement surface to capture a periphery of the flexible element between the retaining face and the flange.