Apparatus for finishing flat surfaces

Details Apparatus for finishing flat surfaces Apparatus for finishing flat surfaces

1986-09-09

1988-03-01

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51177, 299 41, 15 49R, B24B 2300, A47L 1100, E21C 4700

Patent

active

047276860

ABSTRACT:
A self-propelled grinding or milling apparatus for finishing a surface of concrete or similar hard material such as a floor, which includes a frame supported on a number of wheels. A rotating grinding or milling tool is mounted in the frame and has a vertical shaft which is suspended and loaded with weights so that the pressure of the wheels on the surface is maintained at a constant level at varying working pressures of the tool. The apparatus is arranged to tilt laterally by means of a raising and lowering device which acts on the non-steerable wheels so that the pressure of the tool on the floor differs on the right-hand and left-hand side of the apparatus and so gives rise to frictional forces which cause the apparatus to move either in the forward direction or the rearward direction at a speed which is dependent on the magnitude of the tilt.

REFERENCES:
patent: 2201420 (1940-05-01), Zschau
patent: 3146559 (1964-09-01), Wilkinson

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