Abstract: An apparatus for cleaning floors which recycles waste heat and water to provide greater efficiency. An internal combustion engine is used to power the apparatus. Heat from the engine's lubricant is used to heat the wash solution applied to the floor. Heat from the engine's cooling air, radiator, and catalytic converter is used to dry the cleaned floor. A drying brush is also used to accelerate drying. Used rinse water is recycled for use as wash solution. Exhaust from the engine is used to preheat the floor to be cleaned. The engine may be used to propel the apparatus.

Abstract: An apparatus for cleaning floors which recycles waste heat and water to provide greater efficiency. An internal combustion engine is used to power the apparatus. Heat from the engine's lubricant is used to heat the wash solution applied to the floor. Heat from the engine's cooling air, radiator, and catalytic converter is used to dry the cleaned floor. A drying brush is also used to accelerate drying. Used rinse water is recycled for use as wash solution. Exhaust from the engine is used to preheat the floor to be cleaned. The engine may be used to propel the apparatus.

Abstract: A ball nose cutting tool for mounting within a shank-receiving socket of a powered rotatable spindle. The tool includes an elongate and cylindrical shaped tool holder for insertion within the socket of the spindle and a generally rounded upper end. A plurality of insert receiving cavities are formed within the upper end of the tool and a plurality of insert bits are seatingly engaged within the individual insert cavities via threaded openings which are formed in both planar inner side walls defining the cavities and the seatingly engaging drill bits for receiving a screw fastener. An arcuate and curved cutting edge extends from opposite ends of the planar bottom surface and planar end surface and defines a cutting zone extending from the outer periphery to the center of the tool holder.