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Angle tufted rotary brush assembly

  • US 4,307,479 A
  • Filed: 10/19/1979
  • Issued: 12/29/1981
  • Est. Priority Date: 10/19/1979
  • Status: Expired due to Term
First Claim
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1. A rotary brush assembly comprising:

  • (a) a generally cylindrical brush roller body having at least one longitudinally extending helical groove defined in its outer surface;

    (b) two brush strip substrate portions mounted end to end in each said groove and defining locking structure for coupling together, against relative longitudinal movement, adjacent ends of the substrate portions approximately equidistant the ends of the cylindrical roller body;

    (c) a tufted array of bristles mounted on each brush strip substrate portion, said bristles;

    (i) having an angle, with respect to a midplane normal to the roller body axis and equidistant its ends, which angle is an increasing function of bristle spacing from said midplane, the angulation of said bristles ranging from approximately parallel to the midplane near the midplane to approximately 30 degrees outwardly from the midplane at the ends of the roller body;

    (ii) having a length which is an increasing function of bristle angulation from said midplane, and(iii) having a stiffness which is an increasing function of said bristle angulation.

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