Patent ID: 8707496

Claim:
A cleaning section for an electrical toothbrush with a handle section, having a motor and a drive shaft, the cleaning section comprising: a movable bristle holder structured to receive a drive motion from the motor via a drive mechanism comprising a drive shaft having a longitudinal axis, the drive shaft being structured to oscillate around its longitudinal axis thereby imparting rotation or oscillation to the movable bristle holder; a head including a first plurality of cleaning bristles having a first height and arranged in a static bristle field which in use is static relative to the handle section and a second plurality of cleaning bristles having a second height different from the first height, wherein the second plurality of cleaning bristles are supported within the movable bristle holder; and an end extension portion including a third plurality of cleaning bristles, the end extension portion being coupled to the movable bristle holder and wherein the third plurality of cleaning bristles are angled relative to the first and second plurality of cleaning bristles; wherein the movable bristle holder is movable with respect to the head and the static bristle field such that a cleaning motion of the second and third plurality of cleaning bristles includes a back and forth oscillating movement of the second and third plurality of cleaning bristles relative to the first plurality of cleaning bristles.