Abstract: In an example embodiment, a floor sander comprises a motor having at least two selectable speeds, and a sanding adaptor driven to rotate about a rotational axis by the motor. The sanding adaptor includes a planetary disk that rotates about the rotational axis of the sanding adaptor. In addition, the sanding adaptor includes a plurality of sanding head units, each of which is coupled to the planetary disk for independent rotational movement. Each sanding head unit therefore rotates about its own rotational axis independently of any other sanding head unit or the planetary disk. An isolator is also provided, and is positioned generally between the planetary disk and the motor.

Abstract: An ultra-high speed burnisher with a pair of opposing polygonal burnishing pads creates less friction when burnishing a floor than a single circular burnishing pad or two circular burnishing pads. Less friction means that the polygonal pads rotate faster than circular burnishing pads and the polygonal pads create more heat on the floor finish than a single circular burnishing pad. The polygonal pads may be Y-shaped, flower-shaped, hexagonal-shaped, daisy-shaped, elongate like a lawnmower blade, triangular-shaped, square-shaped, pentagonal-shaped or cross-shaped. A method for producing polygonal pads and the resulting product of this method are also disclosed. A method for burnishing the floor of a store with at least 100,000 square feet of floor space on a single battery charge is also disclosed.

Abstract: A grinding head unit mountable in a planetary disk of a surface grinding machine generally including a housing mountable on the planetary disk, a holder supported on the housing and a surface grinding member detachably connectable to the holder wherein the holder is provided with a recess and the holder is provided with a portion receivable within such recess.

Abstract: A surface grinding machine generally consisting of a drive means provided with an output shaft; a planetary disk mounted on the shaft; and at least two grinding head units mounted on the planetary disk, each including a housing mounted on the planetary disk, a shaft having a flange portion, journaled in the unit housing, resilient means interposed between the housing and the flange portion of the unit shaft and a disk provided with a grit surface disposed on an outer side of the flange portion of the unit shaft.

Abstract: A grinding head unit mountable in a planetary disk of a surface grinding machine generally including a housing mountable on the planetary disk, a holder supported on the housing and a surface grinding member detachably connectable to the holder wherein the holder is provided with a recess and the holder is provided with a portion receivable within such recess.

Abstract: A surface grinding machine generally consisting of a drive means provided with an output shaft; a planetary disk mounted on the shaft; and at least two grinding head units mounted on the planetary disk, each including a housing mounted on the planetary disk, a shaft having a flange portion, journaled in the unit housing, resilient means interposed between the housing and the flange portion of the unit shaft and a disk provided with a grit surface disposed on an outer side of the flange, portion of the unit shaft.