An automatic tensioning apparatus is provided that includes a tensioning drive unit having: a longitudinally extending stationary base frame with a plurality of guides extending between a lower portion and an upper portion, and a plurality of rotatable feed wheels axially secured at the lower portion, as well as a translatable drive frame slidably coupled to the plurality of guides with a drive assembly coupled to the drive frame, the drive assembly including a drive motor and a tensile member interface for engaging and rotationally translating a tensile member. The tensioning drive unit further including a plurality of drive frame actuators actuatable to move the drive frame between a bottom frame position and a top frame position, as well as a sensor for at least indirectly sensing the position of the drive frame along a longitudinal base frame axis.

The present invention relates to a floor treatment apparatus (1) and method for treating a floor. The apparatus comprises: •—a housing (10) comprising a top plate (11), and •—a drive system comprising: •—a transmission (21) arranged above the top plate (11), the transmission (21) comprising a transmission shaft (22) passing through an aperture in the top plate (11), •—a motor (23) attached to the transmission (21), the motor (23) arranged above the top plate (11), •—a rotatable drive plate (24) attached to the transmission shaft (22) and positioned below the top plate (11), and •—a coupling member (25) attached to a bottom of the drive plate (24) and arranged to couple a treatment member (26) for treating a floor surface, by engagement on said floor surface, to the drive plate (24), wherein the floor treatment apparatus comprises an open-ended tubular casing extending from a central aperture in the drive plate (24) through the housing (10) to an outlet opening (15) of the housing (10) to which a fluid conduit is connectable, wherein the casing is arranged for a fluid to flow through it.

A robotic cleaner may include a chassis, a single drive wheel rotatably coupled to the chassis, the single drive wheel being configured to rotate about a steering axis and a drive axis, an agitator chamber having an agitator rotatable therein, and a cleaning motor assembly configured to cause the agitator to rotate and further configured to cause air to flow into the agitator chamber.

A cleaning device is provided. The cleaning device includes a driving roller, a driven roller, a flexible cleaning belt sleeved on the driving roller and the driven roller, a garbage collection box disposed on one side of the cleaning belt, a brush disposed over the garbage collection box, a sewage collection tank, a clean water tank and a water squeezing roller disposed on the side of the cleaning belt. The garbage collection box is provided with a guide plate near one end of the cleaning belt, and the guide plate corresponds to the outer side of the cleaning belt. The sewage collection tank and the clean water tank are located downstream of the garbage collection box along the moving direction of the cleaning belt, and the water squeezing roller corresponds to the sewage collection tank.

A burnisher for cleaning and polishing floors is provided. The burnisher includes at least one electric motor powered by at least one battery. The at least one battery can be provided as one or more lithium ion batteries. The burnisher is configured to rotate a burnisher pad at various speeds, as selected by the operator. The burnisher includes a control area including various input and output devices that can control the burnisher and provide information regarding operational parameters of the burnisher, respectively. The control area further includes a touchscreen display that allows the operator to direct the operation of the burnisher.

A nozzle for a cleaner includes a nozzle housing having a suction flow path through which air containing dust flows, a first rotation cleaning unit and a second rotation cleaning unit located on a bottom side of the nozzle housing, the first rotation cleaning unit and the second rotation cleaning unit being spaced apart from each other in a left-right direction of the nozzle housing, each of the first rotation cleaning unit and the second rotation cleaning unit having a rotation plate, a driving device located in the nozzle housing, and a water tank located on the nozzle housing, the water tank being configured to store water to be supplied to the first rotation cleaning unit and the second rotation cleaning unit. The water tank includes a first chamber, and a second chamber spaced apart from the first chamber in the left-right direction of the nozzle housing.

The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). The floor surfacing machine (1) comprises a first control unit (10), and a remote control panel (11) which in turn comprises a second control unit (12) that is arranged to communicate with the first control unit (10). The floor surfacing machine (1) also comprises a second motor (22) that is arranged to propel the satellite surfacing heads (19, 20, 21) such that the planetary head (15) and the satellite surfacing heads (19, 20, 21) are independently operable.

The invention relates to a surface cleaning machine, including a cleaning head having at least one cleaning roller unit which is driven for rotary movement, and a tank device for dirty fluid, wherein a probe device is provided for determining a degree of fill of the tank device for dirty fluid.

An overload control device for use with a floor machine having an electric motor is disclosed. The overload control device can include a power input and a power output connectable to the electric motor. The device can include a load detector, a current sensor operative to sense a current value supplied to the motor via the power output, and a cutoff relay interconnecting the power input and the power output. The cutoff relay being operative to supply power from the power input to the power output when activated, and interrupt power when deactivated. A controller receives a load present indication from the load detector and activates the cutoff relay if a load is present. The controller receives a current value from the current sensor, determines if the current value is greater than a threshold value, and deactivates the cutoff relay when the current value is greater than the threshold value.

A handheld extraction cleaner includes a unitary body provided with a carry handle, and further provided with a supply tank, a recovery tank, and a suction source, all of which are carried on the unitary body. The various components of the extraction cleaner can be arranged for a balanced weight in hand. The supply and recovery tanks are configured to optimize the usable volume within the tanks, among other functions. A powered cleaning head including a removable brushroll is provided on the unitary body.