Patent ID: 7007414

Claim:
A stump grinding apparatus comprising (a) a grinding tool support member; (b) an elongated grinding tool mounted on said support member for rotation about a generally vertical axis of rotation; (c) power means mounted on said support member and connected to said grinding tool for rotating said grinding tool; (d) cutting teeth mounted on a stump grinding surface of said grinding tool; (e) means to lower said support member and drive said rotating grinding tool into the ground at a position adjacent said stump; (f) means to move said support member in a generally horizontal direction toward said stump to urge said rotating grinding tool and said cutting teeth of said stump grinding surface into a side of said stump and throw the debris horizontally underground; (g) means to oscillate and curl said support member to move said grinding tool stump grinding surface along the buried surfaces of said stump to grind away said stump; and (h) means to raise said support member to remove said grinding tool from the ground; wherein said support member is mounted on a tow behind trailer.