Patent ID: 7428766
Filing Date: 2008-09-30
Classification: A61C

Abstract:
1. In a powered toothbrush having a handle, a head mounted to said handle, a primary tuft block mounted in said head, said primary tuft block having exposed bristles extending outwardly from said head, a shaft mounted in said head, said primary tuft block being rotationally mounted on said shaft, a secondary tuft block mounted in said head at a location displaced from said primary tuft block, said secondary tuft block having exposed bristles extending outwardly from said head, a drive assembly in said handle, said drive assembly including a drive connection to said primary tuft block to oscillate said primary tuft block back and forth in a rotational direction, and a drive transmitting connection located between said primary tuft block and said secondary tuft block for moving said secondary tuft block back and forth in a reciprocating manner in a linear direction while said primary tuft block is oscillated in a rotational direction, wherein said secondary tuft block comprises at least two substantially coplanar side by side plates, said primary tuft block is a round tuft block having a generally circular cross section, said at least two substantially coplanar side by side plates disposed adjacent to said primary tuft block, and said drive transmitting connection causing said at least two substantially coplanar side by side plates to reciprocate linearly in a direction parallel to said handle.