Patent ID: 7191846

Claim:
A blade for a work machine which is to be mounted on various kinds of work machines, the blade comprising: a central front face section; end front face sections being disposed at right and left ends thereof via jointed front face sections; the central front face section having a blade width extending in right and left directions perpendicular to a digging direction and having a first cutting edge on a bottom end thereof; the jointed front face sections being disposed on right and left ends of the central front face section and having second cutting edges on bottom ends thereof; and the end front face sections being disposed continuously to the jointed front face sections and having third cutting edges on bottom ends thereof, wherein an intersection point where each of the second cutting edges and each of the third cutting edges intersect is disposed backward from an end of the first cutting edge when viewed from its top, and each blade front face of the central front face section, the jointed front face sections and the end front face sections is constructed of a continuously curved concave face in upward and downward directions thereof.