Patent 7677282 was granted and assigned to Key Knife on March, 2010 by the United States Patent and Trademark Office.
A knife assembly and chipping knife therefor. The knife is rotated about an axis and has a front side facing the direction of rotation. The knife has a single deflector ridge extending from the front side of the knife and two indexing features on either side of the deflector ridge, each corresponding to spaced apart, parallel cutting edges of the knife defining a plane.