Electrically powered toothbrush
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 1992
Grant Date -
N/A
app pub date -
Mar 26, 1990
filing date -
Mar 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A portable electrically powered toothbrush which includes a brush head having at least one tuft holding assembly mounted for rotation about its central axis. Pulsating direct current is supplied through control circuitry to a DC motor in the brush handles by a pair of rechargeable batteries also mounted in the handle. Power from the motor is transmitted through a reduction gear and belt drive assembly to the tuft holding assembly, resulting in a unidirectional intermittent rotation of the assembly about its axis and a simultaneous reciprocation of the assembly along that axis. Alternately, continuous power may be supplied to the motor, resulting in a unidirectional continuous rotation and reciprocation of the tuft holding assembly.
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Family
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