Abstract: A brake fluid pressure control apparatus in a skid control system includes electromagnetic valves arranged between a master cylinder and a wheel cylinder, receiving control signals of a control unit measuring the skid condition of the wheel to control a brake fluid pressure to the wheel cylinder; a hydraulic reservoir reserving the brake fluid discharged through the electromagnetic valves from the wheel cylinder; a pressure fluid supply conduit connecting the master cylinder with the electromagnetic valves and containing a first check valve which allows the flow of fluid in the direction of the electromagnetic valves; a fluid pump for returning brake fluid from the hydraulic reservoir into a portion of the fluid pressure supply conduit between the first check valve and the electromagnetic valves; a pressure fluid return conduit connecting the master cylinder with the wheel cylinder and containing a second check valve which allows the flow of fluid in the direction of the master cylinder; and a controllable ch

Abstract: A brake fluid pressure control apparatus in a skid control system for a vehicle includes a brake fluid pressure control valve device arranged between a master cylinder and wheel cylinders. The device receives control signals from a control unit that measures the skid condition of wheels. The device controls the brake fluid pressure to the wheel cylinders in response to the control signals. A hydraulic reservoir stores the fluid discharged through the device from the wheel cylinders when the pressure to the wheel cylinders is decreased under the control of the device. A fluid pump returns fluid from the reservoir into a pressure fluid supply conduit connecting the master cylinder and the device. A check valve arranged in the supply conduit opens when the fluid flows from the master cylinder towards the device, the outlet of the pump being connected to the conduit between the check valve and the device. A pressure fluid return conduit connects the master cylinder and the wheel cylinders.