Interchangable brush attachment for rotary carpet cleaning machine

Abstract

A brush attachment for a rotary carpet cleaning machine may have interchangeable heads. The brush attachment may also be used on extraction machines to provide both carpet brushing and extraction simultaneously. The interchangeable heads may be used (for example, more firm heads, or more soft heads) to provide different cleaning conditions, depending on the surface to be brushed. Springs may be provided with the brush attachment to permit the attachment to float on the machine. In other words, the springs may permit the brush attachment surfaces to be angled relative to the cleaning face of the machine.

What is claimed is: 
     
         1 . A brush attachment comprising:
 a base plate;   a plurality of base plate brackets attached to a first side of the base plate and extending from an outer circumference of the base plate; and   a plurality of brushes removably attached to the base plate brackets.   
     
     
         2 . The brush attachment of  claim 1 , further comprising:
 spacers attached to the base plate brackets; and   brush brackets attached to the spacers, wherein   the base plate brackets and the brush brackets are L-shaped, wherein a channel is formed between the brush brackets and the base plate brackets, wherein the brushes fit into the channel.   
     
     
         3 . The brush attachment of  claim 1 , wherein the base plate brackets are permanently affixed to the base plate. 
     
     
         4 . The brush attachment of  claim 1 , further comprising a plurality of springs on a second, opposite side of the base plate. 
     
     
         5 . The brush attachment of  claim 2 , further comprising bolts and nuts for interconnecting the base plate brackets with the spacers and the brush brackets. 
     
     
         6 . A brush attachment comprising:
 a base plate;   a plurality of base plate brackets attached to a first side of the base plate and extending from an outer circumference of the base plate;   a plurality of brushes removably attached to the base plate brackets;   spacers attached to the base plate brackets; and   brush brackets attached to the spacers, wherein   the base plate brackets and the brush brackets are L-shaped, wherein a channel is formed between the brush brackets and the base plate brackets, and wherein the brushes fit into the channel.   
     
     
         7 . The brush attachment of  claim 6 , wherein the base plate brackets are welded to the base plate. 
     
     
         8 . The brush attachment of  claim 6 , further comprising a plurality of springs on a second, opposite side of the base plate. 
     
     
         9 . A carpet cleaning machine comprising:
 a plurality of suction heads;   a brush attachment disposed on the carpet cleaning machine, the brush attachment comprising a base plate, a plurality of L-shaped base plate brackets attached to a first side of the base plate and extending from an outer circumference of the base plate, a plurality of brushes removably attached to the base plate brackets, spacers attached to the base plate brackets, and L-shaped brush brackets attached to the spacers, wherein a channel is formed between the brush brackets and the base plate brackets and the brushes fit into the channel, wherein   the suction heads are disposed adjacent to the brushes, and wherein the brush attachment does not interfere with the suction action of the suction heads.   
     
     
         10 . The carpet cleaning machine of  claim 9 , further comprising a plurality of springs disposed between the base plate of the brush attachment and the carpet cleaning machine.