Invention Grant
US08302238B2 Motorized toothbrush tip having inner and other heads counter around different axes 有权
电动牙刷尖头,内部和外部头部绕不同轴线旋转

Motorized toothbrush tip having inner and other heads counter around different axes
Abstract:
A toothbrush tip for a motorized toothbrush with a first brush head and a second brush head. The second brush head encircles the first brush head. The first and second brush heads has different axes of rotation. The first and second brush heads are driven by an elongated shaft. The shaft engages the second brush head. Interactive gear teeth associated with each first and second brush heads allows the first and second brush heads to rotate at opposite direction, upon being driven by the shaft.
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