COMPLEX MOTION TOOTHBRUSH

摘要

An electrically driven toothbrush has a rotatable shaft with a cam preferabl y at a remote end of the shaft, which fits into a slot in a bristle holder. Th e holder is mounted for rotation in a toothbrush head. When the shaft rotates cam describes a circle and drivingly engages the slot to cause the holder to vibrate in a first brushing motion. A second bristle holder is also driven b y the shaft, for a second kind of brushing motion. The second bristle holder i s driven through and engagement with a portion of the remote end and/or with o ne or more additional cams or cam portions included on the shaft.