US Patent 10307880 Floor grinder and polisher

An apparatus for treating a floor surface includes a floor grinder-polisher system including a support frame and a plurality of grinding heads mounted on the support frame, a power source connected to the plurality of grinding heads and configured to supply power to the plurality of grinding heads, a controller configured to control the plurality of grinding heads, and a vehicle connected to the support frame and configured to support the power source. Each grinding head includes a grinding surface configured to rotate and engage a floor surface.