Patent ID: 8764597

Claim:
A coupling comprising: a pair of clutch end members, each said end member including a set of concentric V-grooves disposed on a respective face thereof; a clutch centre member disposed between the clutch end members, the centre member being axially movable between the end members and including a pair of opposing surfaces, one of the opposing surfaces including a plurality of concentric V-grooves configured to mesh with the set of V-grooves of one of the end members, another of the opposing surfaces including a plurality of concentric V-grooves configured to mesh with the set of V-grooves of another of the end members; an actuator coupled to one of the end members and being configured to simultaneously couple the end members to the centre member by urging the V-grooves of both of the end members into engagement with the V-grooves of the centre member; and a centering mechanism coupled to the centre member and configured to urge the center member away from the end members upon deactivation of the actuator, wherein the centering mechanism comprises one of a ball bearing and a spring coupled to a rotational shaft, the centre member has a radially outer end and a radially inner end, and the radially inner end is configured for mounting to the rotational shaft and comprises a recess configured for capturing the centering mechanism therein.