Robert Stefan WRONSKI,Martin Szymon GUTKOWSKI,Alexander David MAY
申请号：
US15802895
公开号：
US20180125221A1
申请日:
2017.11.03
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A fluid delivery system of a dental cleaning appliance includes a pump for drawing a working fluid through a fluid inlet, a hydraulic actuator for receiving working fluid from the pump, a drive for actuating the pump, and a nozzle having a fluid outlet for ejecting working fluid from the appliance. The drive includes a motor and a control circuit for operating the motor. The control circuit is configured to detect stalling of the motor in response to the load applied to the pump by the pressurized working fluid stored in the accumulator, and to deactivate the motor when stalling of the motor has been detected.
