Patent ID: 8863345
Filing Date: 2014-10-21
Classification: A46B

Abstract:
1. A toothbrush comprising: a handle; a head connected to the handle, the head having a proximal periphery, a distal periphery, a first surface, a longitudinal axis and a lateral axis; a first set of cleaning elements forming a loop that extends from the distal periphery of the head to the proximal periphery of the head, the loop being symmetric about the lateral axis, the first set of cleaning elements comprising: wherein the first and second rows are symmetrically arranged about the longitudinal axis and the lateral axis, the first and second rows separated from each other by a transverse distance that only increases with longitudinal distance from the lateral axis; a third row of cleaning elements extending adjacent to the first row and located along a first lateral periphery of the head, the third row located outside of the loop, the third row extending upward from the first surface at an incline so as to diverge from the first row, the third row having a height that is greater than a height of the first row; and a fourth row of cleaning elements extending adjacent to the second row and located along a second lateral periphery of the head, the fourth row located outside of the loop, the fourth row extending upward from the first surface at an incline so as to diverge from the second row, the fourth row having a height that is greater than a height of the second row wherein free ends of the cleaning elements of each of the third and fourth rows form a concave longitudinal side profile; wherein free ends of the cleaning elements of each of the first and second rows form a concave longitudinal side profile; wherein the concave longitudinal side profile of the first row is in transverse alignment with the convex longitudinal side profile of the third row; wherein the concave longitudinal side profile of the second row is in transverse alignment with the convex longitudinal side profile of the fourth row.