Patent ID: 6871661

Claim:
A method of regulating fluid flow in a power steering fluid control apparatus comprising: providing a hydraulic pump for the delivery of pressurized fluid through a pump outlet; introducing pressurized fluid from the pump outlet to a fluid output chamber formed in a fluid control cylinder comprising a movable fluid control piston and a combination fitting having a fluid-receiving end defined by an outer peripheral surface and an end surface, the combination fitting having an internal bore therethrough and a channel in fluid communication with the bore, the channel opening axially to the end surface and radially to the outer peripheral surface; directing at least a portion of said fluid through the internal bore of said combination fitting to a power steering system; detecting the pressure of the fluid with a pressure sensing orifice; communicating said pressure through a passageway to a low pressure chamber located at an end of the piston; regulating the position of the piston within the cylinder relative to the pressure of the fluid; delivering excess fluid to a fluid bypass port; and recirculating excess fluid to the pump.