Motorised floor sweeper

Abstract

A motorised floor sweeper includes a chassis, a pair of elongate brushes mounted to the chassis in parallel relationship with one another, two electric motors mounted to the chassis and causing counter-rotation of one of the brushes with respect to the other brush, and a dust compartment adjacent to at least one of the brushes for receiving dust swept up by the brush.

1 . A motorised floor sweeper comprising: 
 a chassis,    a pair of elongate brushes mounted to the chassis in parallel relationship with one another,    an electric motor mounted to the chassis and causing counter-rotation of one of the brushes with respect to the other brush, and    a dust compartment adjacent to at least one of the brushes for receiving dust swept up thereby.    
     
     
         2 . The floor sweeper of  claim 1  comprising a pair of said electric motors, one of which drives one of the brushes and the other of which drives the other brush.  
     
     
         3 . The floor sweeper of the  claim 2  wherein the electric motors are positioned between the rollers.  
     
     
         4 . The floor sweeper of  claim 3  wherein one of the motors is situated adjacent to one end of the brushes and the other motor is situated adjacent to the other end of the brushes.  
     
     
         5 . The floor sweeper of  claim 4  further comprising a battery compartment in between the brushes.  
     
     
         6 . The floor sweeper of  claim 4  further comprising a pair of drive belts, one transmitting rotational output of one of the motors to one of the brushes and the other of which transmits rotational output of the other motor to the other brush.  
     
     
         7 . The floor sweeper of  claim 1  further comprising floor-engaging rollers attached to the chassis and maintaining each brush at a defined spacing above a flat swept surface in use.  
     
     
         8 . The floor sweeper of  claim 7  wherein the rollers are located inboard of the brushes.  
     
     
         9 . The floor sweeper of  claim 8  further comprising a pair of buffer strip upon the chassis outboard of the brushes defining a minimum spacing between the brushes and a flat swept surface in use.  
     
     
         10 . The floor sweeper of  claim 1  comprising a pair of said dust compartments—one adjacent to each brush and a deflection surface adjacent to each brush and positioned proximate a respective said dust compartment to deflect dust swept up by the brush into that dust compartment.  
     
     
         11 . The floor sweeper of  claim 10  wherein the deflection surface has an edge strip defining a minimum spacing between the brushes and a flat swept surface in use.  
     
     
         12 . The floor sweeper of  claim 9  wherein each brush has a plurality of bristles extending radially therefrom and wherein the bristles have tips that reach a flat swept surface if one of the buffer strips engages the flat swept surface in use.  
     
     
         13 . The floor sweeper of  claim 13  wherein each brush comprises a radially extending strip extending radially as far as the tips of the bristles.  
     
     
         14 . The carpet sweeper of  claim 1  comprising an attachment for an elongate handle attached to the chassis by a multi-pivot joint.