Abstract: An electric back scrub brush that includes a support handle housing having a push button control switch disposed on an outer surface of the support handle housing, a first spur gear coupled to an output end of a motor drive shaft, the motor drive shaft is coupled to a second spur gear which is coupled at a first end of a central drive shaft disposed in a center portion of a neck and a motor energized by a battery disposed within the support handle housing and a second end of a central drive shaft is coupled to a first bevel gear. The electric back scrub brush also includes a brush support housing coupled to the support handle housing, the brush support housing includes the neck and a head and a bristle roll that is protected by a cover member disposed over the head covering the bristle roll.

Abstract: An electric toothbrush having a central longitudinal axis is disclosed. The electric toothbrush has a brush head having a bristle roll shaft with a plurality of bristle tufts radially and outwardly disposed thereon, thereby forming a bristle roll covered by the cover member. The bristle roll shaft, the horizontal drive shaft and the central drive shaft are operatively connected by a belt and pulley system and a bevel gear system, causing the bended or angle feature of the toothbrush head. The central drive shaft and the horizontal drive shaft cause a one-way forward rotating motion of the bristle roll. This rotating motion and direction simulates the brushing technique recommended by most dentists to the conventional manual toothbrush users.

Abstract: An electric toothbrush having a central longitudinal axis is disclosed. The electric toothbrush has a brush head having a bristle roll drive shaft with a plurality of tufts of bristles radially and outwardly disposed thereon, thereby forming a bristle roll and a neck extending between the handle and the brush head. The bristle roll drive shaft and the central drive shaft are operatively connected by a belt and pulley system comprising two pulleys and a belt, and the belt and pulley system is arranged such that the bristle roll drive shaft is offset from and parallel to the central drive shaft of the neck in an eccentric-in-line position. The central drive shaft causes a one-way forward rotating motion of the bristle roll through the belt and pulley system. This rotating motion and direction imitates the brushing technique recommended by dentists to the conventional manual toothbrush users.