Sven Alexander Franke,Alexander Franz DOLL,Robert Florian Schütz
申请号：
US15716418
公开号：
US20180014921A1
申请日:
2017.09.26
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A replacement toothbrush head includes a movable functional element comprising either a piston or a piston chamber； and a fixation element comprising either a piston when the movable functional element comprises a piston chamber； or a piston chamber when the movable functional element comprises a piston. The piston chamber engages the piston to form a pump； and the movable functional element is structured and configured to oscillate relative to the fixation element.
