Patent ID: 7419626
Filing Date: 2008-09-02
Classification: A46B,B29C,B29L,Y10S

Abstract:
1. A method of making a brush having a polymeric base portion and integral therewith a polymeric bristle portion comprising: a) providing a plurality of plates, said plates being either flat or arcuate; b) drilling each of said plates with bores of a diameter of between 0.009 to 0.004 inches and the bores of each respective plate substantially uniform in diameter and substantially uniformly spaced apart; c) assembling and overlaying each of said plates whereby the plates have their respective bores diminishing in diameter; d) aligning the bores of said plates to thereby provide a plurality of cavities, each of substantially uniform diminishing diameter; e) forming a mold from said assembled and aligned plates wherein said cavities are open at the largest diameter portion of the respective cavities to a connecting chamber; f) injecting said cavities of said mold through said connecting chamber with a first polymeric material to thereby form bristles of said bristle portion; g) injecting said connecting chamber with a second polymeric material different from said first nolymeric material to thereby produce said base portion.