Patent ID: 6250844
Filing Date: 2001-06-26
Classification: E04F

Abstract:
A concrete finishing trowel comprising:(A) a mobile frame;(B) a rotor assembly which is supported on said frame and which includes a driven shaft and a plurality of trowel blades attached to and extending outwardly from said driven shaft so as to rest on a surface to be finished and to rotate with said driven shaft to finish a circular area;(C) a power source which is supported on said frame and which is coupled to a rotatable output shaft; and(D) a torque transfer system which transfers torque from said output shaft to said driven shaft, said torque transfer system including a flexible shaft which has an input end operatively coupled to said output shaft and an output end which is operatively coupled to said driven shaft, said flexible shaft being flexible through at least a substantial portion of an entire length thereof to accommodate bending thereof upon a steering operation which results in tilting of said driven shaft.