.~ By stopping pump in response to leakage into or from system
DEFINITION
Classification: 417/9
(under subclass 1) Subject matter in which there is means provided for accumulating or detecting leakage of pump fluid from the pump or system or leakage of an extraneous fluid into the pump or system and the control means acts in response to such leakage to stop operation of the pump motor.
(1) Note. There must be a specific disclosure that the fluid which causes operation of the control means has leaked from the device. The mere possibility of detecting leakage by some conventional means, such as a pressure responsive device, is not sufficient for classification in this subclass.
