A leak control device includes a reservoir fluidly coupled with a brake pipe of a vehicle brake system. The leak control device also includes a conduit fluidly coupled with the reservoir and having an orifice that directs fluid out of the reservoir at a leak rate. The leak control device includes a valve fluidly coupled with and disposed between the reservoir and the conduit. The valve may open and direct the fluid out of the reservoir and out of the vehicle brake system at the leak rate responsive to a pressure of the fluid in the brake pipe being no less than a pressure of the fluid in the reservoir.

In embodiments, a connector for setting a layout of a brake hose includes a first coupling member coupled to one end of the brake hose; a second coupling member disposed to be spaced apart from the first coupling member, and coupled to the caliper housing or the frame of the master cylinder; and an adjusting unit connected at one end thereof to the first coupling member, connected at other end thereof to the second coupling member, and configured to adjust a shortest length between a bottom surface of the first coupling member and an outer circumferential surface of the second coupling member and to adjust a bend angle between the first coupling member and the second coupling member, in a test for setting the layout of the brake hose.

A combined dirt collector and cutout cock (CDC & COC) device for a rail car control to prevent unintentional re-pressurization of the control valve and rail car braking system. The device has an inlet configured for interconnection to an air supply, an outlet configured for interconnection to a control valve of a rail car, a valve moveable between a first position where an inlet is connected to an outlet and a second position where the inlet is isolated from the outlet, and a control valve vent positioned downstream of the valve and configured to open in response to the valve being moved into the second position. The valve may include a ball having a first passageway for selectively connecting and disconnecting the inlet from the outlet and a second passageway formed therethrough that is positioned to interconnect the outlet with the vent when the valve is in the second position.

A combined dirt collector and cutout cock (CDC & COC) device for a rail car control to prevent unintentional re-pressurization of the control valve and rail car braking system. The device has an inlet configured for interconnection to an air supply, an outlet configured for interconnection to a control valve of a rail car, a valve moveable between a first position where an inlet is connected to an outlet and a second position where the inlet is isolated from the outlet, and a control valve vent positioned downstream of the valve and configured to open in response to the valve being moved into the second position. The valve may include a ball having a first passageway for selectively connecting and disconnecting the inlet from the outlet and a second passageway formed therethrough that is positioned to interconnect the outlet with the vent when the valve is in the second position.

A cuboidal hydraulic block of a hydraulic unit of a hydraulic power vehicle braking system. The cuboidal hydraulic block is for fastening optionally with one fastening side or an opposite fastening side to a splashboard of a motor vehicle, so that the hydraulic unit may be housed optionally with an electric motor on a right side or a left side of the hydraulic block in an engine compartment of the motor vehicle.

A cuboidal hydraulic block of a hydraulic unit of a hydraulic power vehicle braking system. The cuboidal hydraulic block is for fastening optionally with one fastening side or an opposite fastening side to a splashboard of a motor vehicle, so that the hydraulic unit may be housed optionally with an electric motor on a right side or a left side of the hydraulic block in an engine compartment of the motor vehicle.

A liquid pressure control device includes a deformable part positioned in a deformed state between a housing and a case in an assembled state in which the housing and the case are assembled. When a first load is applied to the deformable part in a non-assembled state in which the case is separated further from the housing in a first direction than in the assembled state, the deformable part can place the housing and the case in a separation state in which a second end portion supported by a bottom wall is separated from a terminal in the first direction. When a second load greater than the first load is applied in the non-assembled state, the deformable part is deformed by the second load and can place the housing and the case in a contact state in which the second end portion and the terminal contact each other.

[Problem] The present invention provides a brake hydraulic pressure controller capable of suppressing vibrations of the brake hydraulic pressure controller by lowering a position of center of gravity of the brake hydraulic pressure controller at the time of being mounted on a vehicle. [Means for Resolution] A brake hydraulic pressure controller for a four-wheeled motor vehicle that controls a hydraulic pressure of a brake hydraulic circuit includes: a housing; a motor mounted on a first surface of the housing; and plural electromagnetic control valves mounted on a second surface that opposes the first surface of the housing. The plural electromagnetic control valves are arranged in plural rows from a near side to a far side from a third surface that continues perpendicularly from both of the first surface and the second surface. Two circuit control valves and four booster regulators are arranged in the same row. The two circuit control valves are arranged in channels that connect piping ports, to which piping connected to a master cylinder is connected, and discharge sides of pumps driven by the motor. The four booster regulators are arranged in channels that connect the circuit control valves and piping ports, to which piping connected to wheel cylinders is connected.

[Problem] The present invention provides a brake hydraulic pressure controller capable of suppressing vibrations of the brake hydraulic pressure controller by lowering a position of center of gravity of the brake hydraulic pressure controller at the time of being mounted on a vehicle. [Means for Resolution] A brake hydraulic pressure controller for a four-wheeled motor vehicle that controls a hydraulic pressure of a brake hydraulic circuit includes: a housing; a motor mounted on a first surface of the housing; and plural electromagnetic control valves mounted on a second surface that opposes the first surface of the housing. The plural electromagnetic control valves are arranged in plural rows from a near side to a far side from a third surface that continues perpendicularly from both of the first surface and the second surface. Two circuit control valves and four booster regulators are arranged in the same row. The two circuit control valves are arranged in channels that connect piping ports, to which piping connected to a master cylinder is connected, and discharge sides of pumps driven by the motor. The four booster regulators are arranged in channels that connect the circuit control valves and piping ports, to which piping connected to wheel cylinders is connected.

A master cylinder of a brake for a vehicle includes: a housing that is provided with ports through which oil flows; a motor that is connected to the housing and supplies rotation power; a screw that is rotatably installed inside the motor and is supplied and rotated with the rotation power of the motor; a movable piston that is engaged with an outside of the screw and is moved in a longitudinal direction of the housing by the rotation of the screw; a guide that is caught on the housing, subjected to restraint of rotation, and installed to be movable in the longitudinal direction of the housing, restrains rotation of the movable piston, and guides linear motion of the movable piston in the longitudinal direction.