Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1998-09-30
1999-12-14
Chin, Randall E.
Brushing, scrubbing, and general cleaning
Machines
Brushing
15 221, A46B 1302
Patent
active
06000083&
ABSTRACT:
An electric toothbrush comprising an elongated body portion and a head including a static portion and a circular portion, a handle, and an angled shaft between the head and the handle. The circular portion rotates or oscillates about an axis normal to a longitudinal axis of the head. The circular portion includes stiff bristles and the static portion includes soft bristles. The stiff bristles are recessed with respect to the soft bristles. The elongated body portion is hollow and further includes a motor in the hollow portion, which is operatively connected to the circular portion for rotating or oscillating the circular portion. A switch is operatively connected to the motor to provide momentary and continuous operation of the toothbrush. A worm gear and a pair of step gears are located in the hollow portion. The motor is operatively connected to the worm gear and the step gears are operatively connected to the worm gear and to each other. One of the step gears is offset with respect to a longitudinal axis of the elongated body portion. A shaft which is operatively connected to the offset step gear and to a second end to the circular portion. A battery is located within the hollow section for powering the motor.
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Blaustein Lawrence A.
Nottingham John R.
Osher John
Spirk John W.
Chin Randall E.
Dr. Johns Products, Ltd.
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