Patent ID: 7197784
Filing Date: 2007-04-03
Classification: A61C

Abstract:
1. An electric toothbrush comprising: a casing comprising a handle and a neck extending from the handle, a motor situated within the handle and comprising an output shaft having an eccentric cam thereon, a cam follower mounted to slide upon a transverse rod, the cam follower being driven by the cam to reciprocate transversely, a tuft block at a remote end of the neck, a rocker arm extending longitudinally within the neck and having a proximal end engaging the cam follower, and a distal end driving the tuft block, and a resilient bushing sealed within the neck and through which an intermediate-portion of the rocker arm extends in sealed manner to allow pivoting of the rocker arm across the bushing, wherein the cam follower is reciprocated transversely by engagement with the cam, and the proximal and distal ends of the rocker arm reciprocate transversely in opposite phase about the bushing to drive the tuft block.