Abstract: A portable machine is used to abrade the surface of a factory finished wooden floor so the abraded surface may be recoated with a fresh coat of wooden floor finish. Abrasion of the surface provides anchor sites to achieve a strong bond between the pre-existing abraded finish and the fresh coat of wooden floor finish.

Abstract: A floor abrading machine is used to abrade the surface of a factory finished wooden floor so the abraded surface may be recoated with a fresh coat of wooden floor finish. Abrasion of the surface provides anchor sites to achieve a strong bond between the pre-existing abraded finish and the fresh coat of wooden floor finish. The process requires abrading, not removing the factory finish down to bare wood, and recoating to restore the luster to a factory finished wooden floor. Conventional sanders remove the finish down to bare wood to refinish a wooden floor that has been installed and finished in place.

Abstract: A chemical foaming system for use in a floor cleaning machine has a foam generator and a delivery system upstream of the foam generator in communication with a source of pressurized fluid and a source of liquid cleaning solution. The delivery system delivers pressurized fluid and liquid cleaning solution to the foam generator. A dispensing system is disposed downstream of the foam generator for dispensing foam generated by the foam generator onto the floor being cleaned. The foam generator has a pair of independent foaming chambers in generally parallel flow relationship intermediate the delivery system and the dispensing system whereby a portion of pressurized fluid and liquid cleaning solution delivered to the foam generator by the delivery system flows into one of the foaming chambers. The remaining portion of the pressurized fluid and liquid cleaning solution delivered to the foam generator flows into the other foaming chamber.

Abstract: This invention is directed to a floor sander comprising a frame on wheels, a chassis carried by the frame, and a motor-driven sanding head mounted on the chassis generally adjacent the front of the chassis for rotation about an axis extending in side-to-side direction with respect to the chassis. The chassis is mounted on a pivot shaft extending in side-to-side direction with respect to the frame so that the sanding head can be raised and lowered relative to a surface to be sanded. The pivot shaft has first and second bearing assemblies at its ends. A first side of the chassis is movable up and down relative to the first bearing assembly, and a second side of the chassis is secured against up and down movement relative to the second bearing assembly. A guide system is provided for controlling the up and down movement of the first side of the chassis relative to the first bearing assembly so that the movement is in a vertical direction.