Electric toothbrushes

Details Electric toothbrushes Electric toothbrushes

2006-10-17

2006-10-17

Kim, John (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

Brushing

C015S022200, C015S028000, C015S105000, C015S167100

Reexamination Certificate

active

07120960

ABSTRACT:
An electric toothbrush has a brush head which is mounted in a movable manner, and a drive for producing an oscillating operating movement in the brush head. The drive includes a cyclically movable drive part and a follower part. The follower part is biased against the drive part so that the follower part follows the drive part's cyclic drive movement. A sensor determines the brush head's contact pressure by sensing the extent of coupling between the follower part and the drive part, and determining the contact pressure of the brush head based on the extent of coupling.

REFERENCES:
patent: 4698869 (1987-10-01), Mierau et al.
patent: 5815872 (1998-10-01), Meginniss et al.
patent: 5974615 (1999-11-01), Schwarz-Hartmann et al.
patent: 3117160 (1983-04-01), None
patent: 4426446 (1995-02-01), None
patent: 0158870 (1985-03-01), None
patent: WO92/13499 (1992-08-01), None
patent: WO98/01083 (1998-01-01), None

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