JOHANNES HOTZE BERNHARD DE VRIES,PIETER JOHANNES BAX
申请号：
BR112012015270
公开号：
BR112012015270A2
申请日:
2010.11.22
申请国别(地区):
BR
年份:
2017
代理人:
摘要：
A power toothbrush includes a small electromagnetic actuator positioned within the brushhead for driving a brushhead assembly which includes a brushhead portion with bristles extending therefrom. The actuator includes a fixed lower element and a moveable upper element, with the lower and upper elements each having curved roller contacting portions at opposing ends thereof. Roller members are positioned between the roller contacting portions of the upper and lower members. At least one coil is mounted on the lower element, responsive to an alternating current energizing signal. Further, at least two permanent magnet assemblies are positioned on the upper element, having alternating polarity positions.
