US 7,798,436 B2Granted

Portable rotary chipper apparatus

AssigneeThe Toro Company

InventorJames A. Cornelius

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Abstract

A portable chipper apparatus having a chipping disc with front and rear faces and a series of slots extending through the disc. A knife is arranged on the front face of the disc in proximate relation relative to each slot. At least two shredder/detanglers are secured to the rear face of the disc. Each shredder/detangler includes a base and at least three generally planar and substantially identical paddles arranged in spaced and generally parallel relation relative to each other. The paddles extend from the base at an angle and projects away from the rear face of the chipping disc. The paddles on each shredder/detangler have a continuous elongated linear cutting edge for impacting with and further reducing and cutting the size of the chipped material engaged by the paddles. Each shredder/detangler further includes an impeller at a distal end of the base.

Claims18

Dependent claims

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.

A portable rotary chipper apparatus comprising:

a housing mounted on a portable frame and defining a volute shaped chamber with an inlet for receiving materials to be chipped, with said chamber having a peripheral wall, and a discharge chute for expelling chipped material from said chamber;
a chipping disc mounted within and dividing said chamber into a front chamber and a rear chamber, with said disc being connected to a drive shaft for rotation about an axis of rotation, 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 fixed 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, with each paddle extending from said base at an angle and projecting 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.

Dependencies are inferred from the claim text.

Facts

Application: 12/321,571Filed 22 Jan 2009
Published: US 2010/0181399 A122 Jul 2010
Granted: 21 Sep 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B02C 18/083
Within vertical containers: with a disc rotor having generally radially extending slots or openings bordered with cutting knives
A01G 3/002
Cutting implements specially adapted for horticultural purposes; Delimbing standing trees: for comminuting plant waste
B02C 2201/066
For garbage, waste or sewage: for garden waste
B02C
Crushing, pulverising, or disintegrating in general