Patent ID: 9402461
Filing Date: 2016-08-02
CPC Classification: A46B

Claim Text:
1. A head for an oral care implement comprising: a mounting surface and a plurality of twisted tufts, each comprising a plurality of filaments and having a base mounted on the mounting surface, each of the twisted tufts having an outer lateral surface, a longitudinal axis, a lower cross-sectional area adjacent to the base, and an upper cross-sectional area adjacent to a free end of the twisted tuft, the lower cross-sectional area and the upper cross-sectional area having substantially the same shape and size, wherein at least the filaments forming the outer lateral surface are each substantially straight and are all inclined with respect to the longitudinal axis in either a clockwise direction or a counterclockwise direction, and the upper cross-sectional area is twisted with respect to the lower cross-sectional area by a twisting angle α, and the upper cross-sectional area is not congruent with the lower cross-sectional area when they are orthogonally projected onto each other along the longitudinal axis, wherein the plurality of twisted tufts is arranged in at least a first row and a second row, and wherein the longitudinal axes of the twisted tufts of the first row are inclined in a first direction while the longitudinal axes of the twisted tufts of the second row are inclined in a second direction different from the first direction.