Patent ID: 7341434

Claim:
Regulatory device for a pump ( 2 ) with adjustable delivery volume, with a control valve unit ( 3 ) to regulate a control pressure acting in a control pressure chamber ( 21 ) of an actuator unit ( 4 , 5 ), where the control valve unit ( 3 ) comprises a threshold value control valve ( 22 ) subjected to the pressure of a delivery-side working line ( 7 ), and a delivery flow control valve ( 23 ) which is pressurized at a comparison pressure connection ( 29 ) with a consumer input pressure taken from a consumer supply line ( 8 ) and at a control pressure measurement connection ( 27 ) with a control pressure countering the consumer input pressure, and wherein a delivery pressure outlet ( 37 ) of the threshold value control valve ( 22 ) is connected via a control pressure channel ( 30 ) with both the control pressure measurement connection ( 27 ) and with a control pressure supply connection ( 38 ) of the delivery flow control valve ( 23 ), and said delivery flow control valve ( 23 ) is connected variably by the threshold value control valve ( 22 ) with the delivery-side working pressure line ( 7 ).