Patent ID: 7798436

Claim:
A portable rotary chipper apparatus comprising: a housing having an inlet for receiving materials to be chipped and a peripheral wall with a discharge chute for expelling chipped material from said housing; a rotatably driven chipping disc mounted in said housing, said disc having a peripheral edge arranged adjacent to the peripheral wall of said chamber along with front and rear generally parallel faces with a series of slots extending through said disc and opening to said front and rear faces of said disc whereby allowing chipped materials to pass from a front side of said disc to a rear side of said disc, with each slot having a closed margin, and wherein a knife is fixed to the front face of said disc in proximate relation relative to each slot for reducing and forming chips from the materials fed into the inlet of said wood chipper, and wherein at least two shredder/detanglers are attached to the rear face of said disc in diametrically opposed relation relative to each other, with each shredder/detangler including a base and at least three generally planar and substantially identical paddles arranged in radially spaced and generally parallel relation relative to each other, each paddle extends from said base at an acute angle and projects away from the rear face of said chipping disc such that, upon rotation of said disc within said housing, said paddles induce an air flow through the slots in said disc whereby drawing chipped materials through the slots toward the rear side of said disc, and with each paddle having a continuous elongated linear cutting edge for impacting with and further reducing the size of the chipped material engaged by said paddles, and with each shredder/detangler further including an impeller at a distal end of said base for assisting in moving the chipped material toward and out through said discharge chute from said housing.