초록 ▼

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 reciprocates about an axis normal to a longitudinal axis of the head. The circular

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 reciprocates 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 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 or reciprocating the circular portion. A battery is located within the hollow section for powering the motor. 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. Alternately, the toothbrush comprises a plurality of gears and swivel arms which move the brush head moving portion in a rotating, oscillating or reciprocating manner.

대표청구항 ▼

[ Having thus described the invention, it is claimed:] [1.] An electric toothbrush comprising:an elongated body portion having opposed first and second ends, a hollow portion and a longitudinal axis;a head attached to said first end;a moving portion within the head;a motor located within said hollow

[ Having thus described the invention, it is claimed:] [1.] An electric toothbrush comprising:an elongated body portion having opposed first and second ends, a hollow portion and a longitudinal axis;a head attached to said first end;a moving portion within the head;a motor located within said hollow portion of said elongated body portion;a gear located in said hollow portion, wherein said motor is operatively connected to said gear;a plurality of swivel arms, wherein one swivel arm is pivotably connected to said gear, and another swivel arm is connected to the moving portion; anda shaft operatively connected to said swivel arms and disposed for translating movement in a back and forth manner to the moving portion.