Floor-concrete grader

Abstract

A floor-concrete grader comprises a frame having a handle, a placing plate unit, which vertically vibrates along the frame, for placing a concrete floor surface and a rolling wheel. The placing plate unit is composed of three placing plates which are different from one another in the form of knife edge and height, the unit being vertically vibrated by a driving means such as a small engine. When the placing plate unit is drawn, while gripping its handle and being vertially vibrated along the frame, on the floor surface which has been just placed with concrete, the placing plates move while continuously placing the concrete floor surface to level the floor surface.

Dependencies are inferred from the claim text.