Patent ID: 6808465
Filing Date: 2004-10-26
Classification: F16H

Abstract:
A V-belt transmission comprising:a crankshaft having a drive end, wherein the crankshaft includes a plurality of molded crank pins formed integrally with the crankshaft; a transmission case, wherein said transmission case is swingably supported around and with respect to the crankshaft; a V-belt arranged between a fixed pulley half fixed to an end portion of the crankshaft and an axially movable pulley half supported on the crankshaft in a position laterally opposite to the fixed pulley half; and a bolt securing said fixed pulley half to the end portion of the crankshaft, said bolt threadingly engaged with a female screw portion formed within an interior portion of the end portion of the crankshaft, wherein an open edge of the end portion of the crankshaft with the female screw portion formed has a chamfered, tapered edge.