Patent ID: 6266860
Filing Date: 2001-07-31
Classification: B25B,Y10T

Abstract:
A puller useful in removing a pulley assembly from a crankshaft, said pulley assembly including at least one pulley affixed to a hollow tubular member, said hollow tubular member fixedly mounted on said crankshaft, said one pulley having a central aperture passing therethrough, said one pulley positioned proximate one end of said crankshaft, said crankshaft having a crankshaft aperture at said one end thereof, said puller comprising a pair of oppositely disposed thrust plate members, each of said oppositely disposed thrust plate members having thrust plate joining bolt apertures passing therethrough, the joining bolt apertures of one of said thrust plate members in alignment with the joining bolt apertures of the other of said thrust plate members when in operative relationship, thrust plate joining bolt members passing through said aligned joining bolt apertures, said joining bolt members each having a threaded portion at one end thereof, joining bolt nut members in threaded engagement with the threaded portion of said joining bolt members, each of said thrust plate members having a hollow tubular member engagement portion in the periphery thereof, said thrust plate members further including semi-circular pulley hub push members affixed to said thrust plate members at said tubular member engagement portion, said pulley hub push members of predetermined length and coaxially aligned with said hollow tubular member when in operative arrangement with said pulley assembly, a pulley butt plate member having a jackscrew aperture passing therethrough in coaxial alignment with said crankshaft, a threaded jackscrew receiving member in coaxial alignment with said jackscrew aperture, a threaded jackscrew assembly sized to operatively engage said receiving member, said pulley butt plate member having connecting bolt apertures passing therethrough, said thrust plate members having threaded portions at the periphery of said connecting bolt apertures, the connecting bolt apertures of said pulley butt plate member and said thrust plate members oppositely disposed when in operative relationship, connecting bolt members each passing through said oppositely disposed connecting bolt apertures and in engagement with said threaded portions of said thrust plate members, whereby when said puller is operatively positioned on said pulley assembly, said jackscrew assembly is progressively tightened so as to exert a push on said crankshaft resulting in said pulley hub push members exerting a force against the hub of said one pulley thereby causing said pulley assembly to separate from said crankshaft for easy removal without damage to said pulley assembly.