Floor-concrete grader

Details Floor-concrete grader Floor-concrete grader

1986-10-20

1988-03-29

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

With transportation device for relocating molding apparatus...

425456, 425458, B28B 108, E04G 2110

Patent

active

047340223

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.

REFERENCES:
patent: 2656161 (1953-10-01), Degen
patent: 3362308 (1968-01-01), Austin et al.
patent: 3799714 (1974-03-01), Vetovitz
patent: 4614486 (1986-09-01), Bragaghini

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