Patent ID: 8336155

Claim:
A replacement head for a toothbrush drive, the toothbrush drive including an electromagnet, the replacement head comprising: a housing connected to the toothbrush drive; a brush head connected to said housing; a top member fixedly attached to said housing; a link member connected to said brush head; a movable bottom member including at least one magnet attached to said bottom member, said at least one magnet positioned relative to said electromagnet when said housing is connected to the toothbrush drive such that said bottom member oscillates when the electromagnet is actuated; and a mechanical linkage assembly including a fixed shaft and a lever arm, said fixed shaft fixedly connected to said top member and said bottom member, said lever arm engaging said bottom member, said top member and said link member, wherein said lever arm is capable of pivoting about said top member and driving said link member to rotate said link member with respect to said housing, said rotation of said link member rotating said brush head.