技术功效语段：
[0013]The present invention provides significant advancements or improvements over existing brush assemblies, and existing solutions for finishing concrete, terrazzo or other hard floor surfaces. The present invention provides a durable cleaning device that does not wear as quickly as a non-woven floor pad and provides increased durability for finishing rough floor surfaces. The present invention further allows for reduced waste and increased economy through providing for the individual replacement of brushes. Some aspects of the present invention also provide for a way to better clean or finish rough or uneven floors through the increased flexibility of individual brushes. Floors can be uneven due to an unfinished surface, grout lines, or gaps between tiles. The present disclosure provides a way to better clean these low spots in a floor. The present disclosure can provide cleaning and finishing consistency due to conformability of the individual brushes and bristles. The present disclosure also allows easy removal and replacement of a single broken or worn brush without requiring replacement of other brushes. Even further, the cushion pad compensates for a potential difference in height between the bristles on the new brush and the bristles on older brushes.
权利要求：
1. A brush assembly (100, 200, 300) comprising: a cushion pad (120, 220,320) having a compressibility at 25% deflection within the range of 6.9 kPa (1 psi) to 2413 kPa (350 psi); a brush (110, 210,310) attached to the cushion pad, wherein the brush comprises: a brush base, and bristles (111, 311), the bristles comprising moldable polymeric material and abrasive particle additives.
2. The brush assembly of claim 1, wherein the cushion pad (120, 220, 320) comprises at least one of: a non-woven material, a porous material, a fabric material, an inflatable material, and an elastomer.
3. The brush assembly of claim 1, wherein the perimeter of the at least one of the plurality of brushes (110, 210, 310) is circular.
4. The brush assembly of claim 1, wherein the perimeter of the at least one of the plurality of brushes (110, 210, 310) is wedge-shaped.
5. The brush assembly of claim 1, wherein the bristles (111, 311) have a conical shape, wherein the circumference of the base of the bristle is larger than the circumference of the tip of the bristle.
6. The brush assembly of claim 1, wherein the brush base is molded such that it is integral with the bristles (111, 311).
7. The brush assembly of claim 1, wherein a plurality of brushes (110, 210) is secured to the cushion pad (120, 220), wherein at least one of the plurality of brushes comprises: a brush base, and bristles (111), the bristles comprising moldable polymeric material and abrasive particle additives.
8. The brush assembly of claim 7, wherein the cushion pad (120, 220) has a hardness of less than 50 shore A.
9. The brush assembly of claim 7, wherein the cushion pad (120, 220) has a relaxation modulus less than 25% according to the Relaxation Test.
10. The brush assembly of claim 7 wherein the cushion pad (120, 220) comprises at least one of: a non-woven material, a porous material, a fabric material, an inflatable material, and an elastomer.
11. The brush assembly of claim 7, wherein the at least one of the plurality of brushes (110, 210) is secured to the cushion pad (120, 220) with a detachable attachment mechanism (112, 122).
12. The brush assembly of claim 7, wherein the plurality of brushes (110, 210) are secured to a first major side of the cushion pad (120, 220), and wherein the second major side of the cushion pad comprises an attachment mechanism (124).
13. The brush assembly of claim 11, wherein the cushion pad (120, 220) is further mountable to a floor cleaning driver, and wherein the bristles (111) on each of the plurality of brushes (110, 210) are configured to simultaneously contact a floor surface when pressure is applied to the driver, even when the length of the bristles (111) varies.
14. The brush assembly of claim 7, wherein the abrasive particles comprise at least one of: diamond, aluminum oxide, silicon carbide, cerium oxide, precision shaped grains, and agglomerates.
15. The brush assembly of claim 7, wherein the abrasive particles have a median particle size in the range of 1 microns to 10 microns.