Patent ID: 8356375

Claim:
An oscillating, floor treating device comprising: a power source having a rotatable drive shaft, wherein the rotatable drive shaft rotates around an axis of rotation; a floor treating attachment; and means for imparting at least two speeds of oscillating motion from the drive shaft to the floor treating attachment, wherein the means for imparting at least two speeds of oscillating motion comprise: a flywheel having an aperture configured to receive the drive shaft; a counterbalance configured to connect to the flywheel; and means for connecting the floor treating attachment to the counterbalance at at least two different distances from the axis of rotation of the drive shaft, wherein the means for connecting the floor treating attachment to the counterbalance comprise: a plug bearing configured to be positioned between the counterbalance and the floor treating attachment; and a bolt, and wherein the counterbalance has an aperture, the plug bearing has at least two different apertures configured to align with the counterbalance aperture, and the bolt is configured to extend through the counterbalance aperture and any of the at least two different plug bearing apertures.