Patent ID: 7191880
Filing Date: 2007-03-20
Classification: B23P,F16D,F16H,Y10T

Abstract:
1. An over-running clutch pulley for rotationally engaging an input device and an output device, comprising: a sheave member including a sheave input section, a sheave clutch section and sheave clutch surface, the sheave input section adapted to the engage the input device, said sheave input section and said sheave clutch section being unitarily formed together as one piece; a hub member located substantially concentrically within said sheave member and including a hub output section, a hub clutch section and a hub clutch surface, the hub output section adapted to engage the output device, the hub clutch surface being located substantially adjacent said sheave clutch surface, said hub output section and said hub clutch section being unitarily formed together as one piece; a clutch member adapted to engage said sheave clutch surface and said hub clutch surface upon the acceleration of said sheave member in a first rotational direction relative to said hub member, and to disengage said sheave clutch surface and said hub clutch surface upon the deceleration of said sheave member in the first rotational direction relative to said hub member; wherein one of said sheave clutch surface and said hub clutch surface is a surface having diffused carbon therein and has a surface microhardness greater than said hub output section.