Toothbrush

  • US 9,788,643 B2
  • Filed: 09/14/2011
  • Issued: 10/17/2017
  • Est. Priority Date: 09/14/2011
  • Status: Active Grant
First Claim
Patent Images

1. A toothbrush comprising:

  • a handle;

    a head having a first surface and a second surface, the first surface comprising a tufting area ATS in the range of 180 mm2 to 270 mm2 comprising X number of square tuft holes, wherein X is in the range of 32 to 44 the square tuft holes arranged in a pattern having a central section, a distal section, and a proximal section;

    a bristle tuft mounted within and extending from each of the tuft holes, each of the bristle tufts formed by a plurality of tapered bristle filaments;

    wherein there are 28-40 filaments in each tuft holewherein a ratio of ATS to X is in a range of 5.0 to 6.5 mm2 per tuft hole;

    wherein each of the tuft holes has a tuft hole area ATH and X×

    ATH is in a range of 50 mm2 to 80 mm2;

    wherein the square tuft holes of the central section of the pattern are arranged in a plurality of transverse rows that extend substantially perpendicular to a longitudinal axis of the toothbrush and a plurality of longitudinal rows that extend substantially parallel to the longitudinal axis of the toothbrush;

    wherein the square tuft holes of the distal section of the pattern comprise a distal transverse row, the distal transverse row being transversely offset from the transverse rows of the central section;

    wherein the square tuft holes of the proximal section of the pattern comprise a proximal transverse row, the proximal transverse row being transversely offset from the transverse rows of the central section; and

    wherein adjacent tuft holes of the transverse rows of the pattern are separated by a distance ZTR2 and adjacent tuft holes of the plurality of longitudinal rows of the pattern are separated by a distance ZLR2, the distance ZTR2 being less than the distance ZLR2.

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