US Patent No: 6,000,083
Number of patents in Portfolio can not be more than 2000
Electric toothbrush
Stats
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Dec 14, 1999
Issued date -
Sep 30, 1998
filing date -
09/163,621
serial no -
In Force
status
Importance
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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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First Claim
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,120,225 Method and apparatus for brushing teeth with cyclically rotating brush strokes | 97 | 1991 | |
| 5,186,627 Hand-actuated rotatable toothbrush | 71 | 1991 | |
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| 5,732,433 Electric toothbrush | 74 | 1995 | |
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| 5,070,567 Electrically-driven brush | 94 | 1991 | |
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| 5,170,525 Battery operated toothbrush | 53 | 1991 | |
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| 5,590,434 Electric toothbrush | 47 | 1995 | |
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| 4,203,431 Facial treatment device | 48 | 1978 | |
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| 5,378,153 High performance acoustical cleaning apparatus for teeth | 91 | 1992 | |
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| 5,341,534 Electric toothbrush | 63 | 1993 | |
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| 5,274,870 Movable head toothbrush apparatus | 33 | 1992 | |