Tool is transversely elongated blade (e.g., bulldozer):
(under subclass 681) Apparatus wherein the earth working element has a vertical, generally planar earth working portion extended in its dimension transverse to the direction of travel of a vehicle propelling the element, the magnitude of the extension being at least on the order of the width of the vehicle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
781+, for the combination of a blade and a mounting for positioning the blade between the front and rear ground supports of a vehicle.
811+, for the combination of a blade and a mounting for positioning the blade ahead of a vehicle.
