Patent ID: 7617949

Claim:
A flow volume limiting device for use in a liquid supply system, said flow volume limiting device comprising: a housing having an inlet and an outlet; a valve assembly for controlling flow though said housing; a flow measuring assembly responsive to flow through said housing and providing a rotary output proportional to measured flow; an interrupt assembly having a rotary control member closing said valve assembly in response to rotation of said control member in a first direction to an interrupt position; a reset cam system engageable with said rotary control member and rotating said rotary control member in a second direction to an initial position, rotationally spaced from said interrupt position; and a friction clutch assembly connected between said flow measuring assembly and said rotary control member; said friction clutch assembly including an clutch member responsive to pressure resulting from flow in said housing for engaging said clutch assembly to rotationally couple said flow measuring assembly to said rotary control member in the presence of flow and disengaging said clutch assembly to rotationally decouple said flow measuring assembly from said rotary control member in the absence of flow.