Electric toothbrushes
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United States of America Patent
Stats
-
Oct 17, 2006
Grant Date -
Jul 17, 2003
app pub date -
Dec 5, 2002
filing date -
Feb 8, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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Family
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