Electric toothbrush having a flexible drive shaft

Details Electric toothbrush having a flexible drive shaft Electric toothbrush having a flexible drive shaft

2008-07-15

2008-07-15

Karls, Shay L (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

Brushing

C015S022200

Reexamination Certificate

active

07398575

ABSTRACT:
An electric toothbrush is disclosed comprising a body, a head, and a neck extending therebetween. A motor, drive train, and one or more batteries impart motion to the collection of movable bristles. A spring component is provided in the drive train that is configured to absorb excessive loads that would otherwise be transmitted to the motor. Reducing or eliminating application of such excessive loads on the motor extends battery life.

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