Abstract: A floor treating machine has a frame and a housing connected rotatably to the frame according to a main rotation axis. At least three heads are suspended rotatably with respect to the housing according to respective rotating axes, which are generally parallel to the main rotation axis, as well as a number of drive motors which is at least equal to the number of heads. Each head is connected to its own respective drive motor.

Abstract: A floor treating machine includes a frame provided with a housing which is supported with respect to the frame in such a manner that it can rotate about a substantially vertical housing axis, at least three heads positioned at intervals around the axis and rotatably mounted to the housing, the axis of each head being about parallel to the housing axis, and each head having a bottom surface provided with treating elements and/or coupling elements for treating members to be coupled to, and a motor on the frame which is in driving interaction with the housing and the heads via respective transmissions. At least two of the heads are drivable by separate respective head transmissions each comprising a head pulley connected to the respective head, a drive pulley interacting with the motor as well as a belt between each pair of a head pulley and a drive pulley.

Abstract: A grinding machine comprises a frame having a rotary casing that bears rotary holders for grinding discs, as well as a drive motor which is mounted on the frame and interacts with the casing and the holders to drive the machine. The drive motor is connected by means of a continuous flexible or articulated element to the holders for driving the latter in the direction of rotation, wherein at least one of the holders is coupled to the frame by means of a gear transmission, in order to bring the casing into rotation when said holder is driven.