Patent ID: 6546586
Filing Date: 2003-04-15
Classification: A46B,A46D,Y10S

Abstract:
A toothbrush comprising an elongated resilient handle extending between two ends and a brush head disposed at one of said ends, said brush head having a flat support surface and a plurality of tufts of bristles fabricated of polybutylene terephthalate, each tuft comprised of:a) a multiplicity of primary bristles of uniform cross-sectional configuration having proximal ends embedded in said head and distal ends extending orthogonally outward from said support surface, and b) a multiplicity of secondary bristles having proximal extremities embedded in said head and pointed distal extremities extending orthogonally outward from said support surface to an action zone beyond the distal ends of said primary bristles, said secondary bristles having a tapered cross-sectional configuration in said action zone that terminates in said pointed distal extremity.