Arnold Aalders,Hassan El Barakat,Theodorus Johannes Adrianus Maria Den Bekker,Cornelis Johannes Janson
申请号：
US14422026
公开号：
US09724453B2
申请日:
2013.06.26
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A breast pump system comprising a solenoid valve includes a power source that is arranged to supply electrical power to the solenoid valve so as enable the solenoid valve to move between first and second positions. The breast pump system also includes a controller configured to detect a change in inductance of the solenoid valve that is indicative of the solenoid valve moving from first to second position and a control action in which the vacuum pump is stopped.
