Inserted bristle cosmetics brush

Abstract

A cosmetics brush has an applicator rod with a molded polymer applicator core at the distal end thereof, the applicator core having a substantially circular cross-sectional shape, a plurality of spaced apart tuft-receiving blind openings are formed in the applicator core in selected locations thereon and a plurality of bristle tufts each formed of a plurality of bristle fibers folded into a U-shaped configuration about an anchors are received in a respective one of the tuft-receiving blind openings, the anchors extending across the tuft-receiving blind openings and having ends embedded in the applicator core to secure the bristle tufts therein. The blind openings and bristle tufts may be deployed in a variety of configurations, including rows and spirals, and there may be multiple rows and spirals. The bristle tufts may have different bristle fibers.

1 . A cosmetics brush comprising:
 A) an applicator rod having a molded polymer applicator core at the distal end thereof, the applicator core having a substantially circular cross-sectional shape;   B) a plurality of spaced apart tuft-receiving blind openings formed in the applicator core in selected locations thereon; and   C) a plurality of bristle tufts each formed of a plurality of bristle fibers folded into a U-shaped configuration about an anchor and received in a respective one of the tuft-receiving blind openings, the anchors extending across the tuft-receiving blind openings and having ends embedded in the applicator core to secure the bristle tufts therein.   
   
   
       2 . A cosmetics brush as defined in  claim 1  wherein the plurality of blind openings have a circular cross section and extend radially inwardly into the applicator core. 
   
   
       3 . A cosmetics brush as defined in  claim 2  wherein the depth of the blind openings is about two times the diameter of the blind openings. 
   
   
       4 . A cosmetics brush as defined in  claim 3  wherein the anchors are substantially rectilinear, having a length, height and thickness. 
   
   
       5 . A cosmetics brush as defined in  claim 4  wherein the anchors have a thickness which is about 10% to 20% of their height. 
   
   
       6 . A cosmetics brush as defined in  claim 4  wherein the applicator core has an axis and the anchors have their length deployed generally along the axis of the applicator core. 
   
   
       7 . A cosmetics brush as defined in  claim 6  wherein the holes have a diameter of about 0.03 inches and a depth of about 0.06 inches. 
   
   
       8 . A cosmetics brush as defined in  claim 7  wherein the anchors have a length of about 0.04 inches, a height of about 0.045 inches and a thickness of about 0.006 inches. 
   
   
       9 . A cosmetics brush as defined in  claim 8  wherein at least some of the bristle tufts comprise about 12 bristle fibers each having a diameter of about 0.06 inches. 
   
   
       10 . A cosmetics brush as defined in  claim 8  wherein the bristle tufts comprise bristle fibers each having a diameter in a range of about 0.0025 inches to about 0.012 inches. 
   
   
       11 . A cosmetics brush as defined in  claim 1  wherein the blind openings are formed by the molded configuration of the applicator core. 
   
   
       12 . A cosmetics brush as defined in  claim 1  wherein the blind openings are formed by drilling the applicator core. 
   
   
       13 . A cosmetics brush as defined in  claim 1  wherein the blind openings are formed by EDM process. 
   
   
       14 . A cosmetics brush as defined in  claim 1  where at least some of the blind openings have a non-circular cross-sectional shape. 
   
   
       15 . A cosmetics brush as defined in  claim 14  wherein at least some of the openings are elongated. 
   
   
       16 . A cosmetics brush as defined in  claim 1  wherein the applicator core has a diameter in the range of about 0.120 inches to 0.190 inches. 
   
   
       17 . A cosmetics brush as defined in  claim 16  wherein the applicator core has a diameter of about 0.140 inches. 
   
   
       18 . A cosmetics brush as defined in  claim 16  wherein the applicator core is made from one of polypropylene, acetal, ABS, PVC and nylon. 
   
   
       19 . A cosmetics brush as defined in  claim 1  wherein the applicator core is made from one of polypropylene, acetal, ABS, PVC and nylon. 
   
   
       20 . A cosmetics brush as defined in  claim 1  wherein the applicator core has a longitudinal axis and some of the plurality of blind openings and bristle tufts are deployed spaced apart in a first row along the longitudinal axis. 
   
   
       21 . A cosmetics brush as defined in  claim 20  wherein the others of the plurality of blind openings and bristle tufts are deployed in a second row spaced apart along the longitudinal axis of the applicator core, diametrically opposite the first row. 
   
   
       22 . A cosmetics brush as defined in  claim 21  wherein the blind openings and bristle tufts received therein of the second row are offset with respect to the blind openings and bristle tufts received therein of the first row. 
   
   
       23 . A cosmetics brush as defined in  claim 20  wherein the blind openings and bristle tufts received therein are deployed in four rows along the longitudinal axis of the applicator core. 
   
   
       24 . A cosmetics brush as defined in  claim 23  wherein the four rows are deployed at about  90  degree intervals about the applicator core. 
   
   
       25 . A cosmetics brush as defined in  claim 23  wherein two of the four rows of blind openings of bristle tufts received therein are diametrically opposed and the other two rows of blind openings and bristle tufts received therein are respectively deployed at about 45 degrees from one of the diametrically opposed rows. 
   
   
       26 . A cosmetics brush as defined in  claim 23  wherein there are more than four rows of blind openings and bristle tufts received therein deployed spaced apart along the axis of the applicator core, and the rows are substantially equally spaced about the applicator core. 
   
   
       27 . A cosmetics brush as defined in  claim 26  wherein there are six rows of blind openings and bristle tufts received therein. 
   
   
       28 . A cosmetics brush as defined in  claim 26  wherein there are eight rows of blind openings and bristle tufts received therein. 
   
   
       29 . A cosmetics brush as defined in  claim 26  wherein the blind openings and bristle tufts received therein of each row are offset from the blind openings and bristle tufts received therein of an adjacent row. 
   
   
       30 . A cosmetics brush as defined in  claim 21  wherein one of the rows of blind openings comprises elongated blind openings generally aligned with the longitudinal axis of the applicator core, and the second row of blind openings comprises elongated blind openings deployed generally across the longitudinal axis of the applicator core. 
   
   
       31 . A cosmetics brush as defined in  claim 1  wherein the blind openings and bristle tufts received therein are deployed in at least one spiral row about the applicator core. 
   
   
       32 . A cosmetics brush as defined in  claim 1  wherein the blind openings and bristle tufts received therein are deployed in at least two spiral rows about the applicator core. 
   
   
       33 . A cosmetics brush as defined in  claim 32  wherein the two rows have opposite pitches. 
   
   
       34 . A cosmetics brush as defined in  claim 1  wherein at least some of the bristle tufts have different bristle fibers. 
   
   
       35 . A cosmetics brush as defined in  claim 34  wherein at least some of blind openings and bristle tufts received therein are deployed spaced apart in two rows along the axis of the applicator core and the bristle tufts of the two rows have different bristle fibers. 
   
   
       36 . A cosmetics brush as defined in  claim 1  wherein different areas of the applicator core have different densities of blind openings and bristle tufts received therein.