Patent ID: 6148476
Filing Date: 2000-11-21
Classification: A47L,H01M,Y02E

Abstract:
Machine for treating a floor surface comprising, in combination: a chassis for movement on the floor surface in a forward direction; a linkage plate pivotably mounted to the chassis about a linkage axis which is at an acute angle to the forward direction; a drive mount pivotably mounted to the linkage plate about a mount axis which is parallel to but spaced from the linkage axis; a drive mounted to the drive mount; a floor surface treating member removably secured to the drive for rotation thereby about a drive axis generally perpendicular to the floor surface, with the floor surface treating member having a diametric width about the drive axis, with the linkage plate, the drive mount, the drive, the floor surface treating member, and the chassis being arranged so that rotation of the floor surface treating member on the floor surface tends to assist the movement of the chassis on the floor surface in the forward direction, with the floor surface treating member having an opposite portion opposite the mount axis from the linkage axis and having an adjacent portion on the same side of the mount axis as the linkage axis; and means for biasing the drive mount to pivot about the mount axis in a direction to move the opposite portion of the floor surface treating member towards the floor surface and the adjacent portion of the floor surface treating member away from the floor surface and thereby engage the floor surface treating member in a cleaning pattern on the floor surface extending perpendicular to the forward direction over substantially the full diametric width of the floor surface treating member.