Patent ID: 6318079
Filing Date: 2001-11-20
Classification: F15B,F16D

Abstract:
In a hydraulic system having a control valve with variable metering orifice through which hydraulic fluid flows between a pump to an actuator connected to the control valve at a workport, the pump being of the type which produces an output pressure at an outlet that is a predefined amount greater than an input pressure at a control port, and the input pressure is determined in response to a pressure at the workport; a flow compensator comprising:a pressure compensating valve controlling flow of fluid from the variable metering orifice and the workport in response to a differential in pressures acting on opposite first and second sides of the pressure compensating valve, wherein the first side receives a pressure produced by the variable metering orifice; anda flow regulator connected to the output of the pump and reducing the output pressure to produce a reduced pressure that is applied to the second side of the pressure compensating valve.