Patent ID: 6065176
Filing Date: 2000-05-23
Classification: A46B,Y10S

Abstract:
A toothbrush comprising a brush head, a handle and a neck portion connecting said brush head to said handle, said brush head having a free end distal from said handle and an attached end adjacent to said neck portion, wherein;a) said brush comprises a plurality of rows of bristle tufts, each of said rows of bristle tufts being oriented in a direction generally perpendicular to a longitudinal axis of said toothbrush;b) the tips of the bristles of said bristle tufts being arranged to provide three brush surfaces;c) the first of said three brush surfaces being located adjacent the free end of said brush head and extending upwardly from said free end at an angle of from about 15.degree. to about 45.degree. with respect to said brush head to a first bristle peak;d) said second brush surface extending downwardly from said first bristle peak toward said brush head at an angle of from about 15.degree. to about 45.degree. with respect to said brush head;e) said third brush surface extending upwardly from said second brush surface, at an angle of from about 5.degree. to about 25.degree. with respect to said brush head, to a second bristle peak adjacent said neck portion, said second brush surface and said third brush surface forming a bristle valley located below said first bristle peak and said second bristle peak;f) the ratio of the height of the bristles at said first bristle peak to the height of the bristles located at said bristle valley being from about 1.1 to about 1.4; and,g) the difference between the height of the bristles at said second bristle peak and the height of said bristles at said first peak being less than about 2 mm;wherein all of the tips of the bristles in at least one of said second brush surface and said third brush surface is planar form a plane.