US2021000248A1PendingUtilityA1

Floor bristle brush assembly

Assignee: 3M INNOVATIVE PROPERTIES COPriority: Mar 13, 2018Filed: Mar 8, 2019Published: Jan 7, 2021
Est. expiryMar 13, 2038(~11.6 yrs left)· nominal 20-yr term from priority
A47L 11/02A46B 2200/3093A46B 2200/3086A47L 13/16A46B 3/005A47L 11/4038A46B 13/008A46B 7/04
42
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Claims

Abstract

A brush assembly comprising a cushion pad and a plurality of brushes secured to the cushion pad. The cushion pad has a 25% compressibility within the range of 6.9 kPa (1 psi) to 2413 kPa (350 psi). At least one of the plurality of brushes comprises: a brush base, and bristles, the bristles comprising moldable polymeric material and abrasive particle additives.

Claims

exact text as granted — not AI-modified
1 . A brush assembly comprising:
 a cushion pad having a 25% compressibility within the range of 6.9 kPa (1 psi) to 2413 kPa (350 psi);   a plurality of brushes secured to the cushion pad, wherein at least one of the plurality of brushes comprises: a brush base, and bristles, the bristles comprising moldable polymeric material and abrasive particle additives.   
     
     
         2 . The brush assembly of  claim 1 , wherein the cushion pad has a hardness of less than 50 shore A. 
     
     
         3 . The brush assembly of  claim 1 , wherein the cushion pad has a relaxation modulus less than 25% according to the Relaxation Test. 
     
     
         4 - 6 . (canceled) 
     
     
         7 . The brush assembly of  claim 1  wherein the cushion pad comprises at least one of: a non-woven material, a porous material, a fabric material, an inflatable material, and an elastomer. 
     
     
         8 . The brush assembly of  claim 1 , wherein the at least one of the plurality of brushes is secured to the cushion pad with a detachable attachment mechanism. 
     
     
         9 . The brush assembly of  claim 1 , wherein plurality of brushes are secured to a first major side of the cushion pad, and wherein the second major side of the cushion pad comprises an attachment mechanism. 
     
     
         10 . (canceled) 
     
     
         11 . (canceled) 
     
     
         12 . The brush assembly of  claim 8 , wherein the cushion pad is further mounted to a floor cleaning driver, and wherein the bristles on each of the plurality of brushes simultaneously contact a floor surface when pressure is applied to the driver, even when the length of the bristles varies. 
     
     
         13 . The brush assembly of  claim 1 , wherein the abrasive particles comprise at least one of: diamond, aluminum oxide, silicon carbide, cerium oxide, precision shaped grains, and agglomerates. 
     
     
         14 . The brush assembly of  claim 1 , wherein the abrasive particles have a median particle size in the range of 1 microns to 10 microns. 
     
     
         15 . A brush assembly comprising:
 a cushion pad having a 25% compressibility within the range of 6.9 kPa (1 psi) to 2413 kPa (350 psi);   a brush attached to the cushion pad, wherein the brush comprises: a brush base, and bristles, the bristles comprising moldable polymeric material and abrasive particle additives.   
     
     
         16 - 18 . (canceled) 
     
     
         19 . The brush assembly of  claim 15 , wherein the cushion pad comprises at least one of: a non-woven material, a porous material, a fabric material, an inflatable material, and an elastomer. 
     
     
         20 . (canceled) 
     
     
         21 . (canceled) 
     
     
         22 . The brush assembly of  claim 15 , wherein the perimeter of the at least one of the plurality of brushes is circular. 
     
     
         23 . The brush assembly of  claim 15 , wherein the perimeter of the at least one of the plurality of brushes is wedge-shaped. 
     
     
         24 . The brush assembly of  claim 15 , wherein the bristles have a conical shape, wherein the circumference of the base of the bristle is larger than the circumference of the tip of the bristle. 
     
     
         25 . (canceled) 
     
     
         26 . The brush assembly of  claim 15 , wherein the brush base is molded such that it is integral with the bristles. 
     
     
         27 . (canceled)

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