Patent ID: 6154987
Filing Date: 2000-12-05
Classification: E02F

Abstract:
A cutting tooth for a trencher chain, the cutting tooth comprising:a base portion aligned along a first plane, the base portion including means for allowing the cutting tooth to be connected to the trencher chain;a distal portion that is generally obliquely aligned with respect to the first plane, the distal portion having generally planar inner and outer surfaces;a leading end and a trailing end with at least a portion of the leading end being generally planar and extending along at least the distal portion of the cutting tooth, the portion of the leading end having a width that extends from the inner surface to the outer surface of the distal portion with the portion of the leading end being substantially perpendicular to the first plane;a curved transition located between the distal portion and the base portion, the curved transition curving away from the first plane and at least partially forming a cupped portion that extends from the leading end to the trailing end of the cutting tooth;a hardened tip mounted within a notch defined by the distal portion and positioned at a region of the leading end that is located farthest from the first plane; andhard facing positioned along the leading end adjacent to the hardened tip.