Patent ID: 6019443
Filing Date: 2000-02-01
Classification: B62D

Abstract:
A track-driven tractor comprising:a chassis;at least one track;at least one sprocket drive having a rotatable hub and a sprocket fixed to the hub for propelling said track;an engine and a drive train on the chassis for driving said sprocket drive for rotation of said hub about a substantially horizontal axis of rotation;a rotating cutter blade mounted on said sprocket drive at a location which revolves in a path around said axis of rotation, said rotating cutter blade having a cutting edge in a zone bounded by said sprocket and said chassis and being substantially spaced from said sprocket; anda stationary cutter blade mounted to said chassis at a location generally tangent to the path of the revolving cutter blade, said stationary cutter blade having a cutting edge that cooperates with said rotating cutter blade to shear refuse that tends to be entrained by said sprocket and wrapped around said hub, said cutting edge of said rotating cutting blade being at an oblique angle to said axis of rotation of said hub.