Abstract: Disclosed is a railway braking system including a service brake supplied by a first source, a parking brake having a device for immobilizing the service brake and a mobile control device for mobile control of the immobilizing device, and a command and control unit configured to receive information indicative of a value of the first source, process information indicative of a parking brake setpoint so as to actuate the control device, and determine a value of a second source according to the setpoint and to the information indicative of a value of the first source, so as to supply a pressure chamber of the service brake.

Abstract: A rail vehicle braking system includes a service brake (6) having a movable piston (8) delimiting with a body (2) of the system a service brake chamber (13) supplied by a first source, and a parking brake (7) having a blocking device (20) having a position in which it immobilizes the piston in a position, and a movable actuating device (23, 24) delimiting with the body a parking brake chamber (25) supplied by a second source and having a stable position in which it holds the blocking device in its position; the service chamber, when the actuating device is in its stable position, being supplied by the second source of which the pressure is greater than that of the first source in order to apply a greater braking force than the force applied when the piston is in its position.

Abstract: A rail vehicle braking system includes a service brake having a movable piston (8) which with a body (2) of the system delimits a service brake chamber (13) supplied by a first source, a piston rod (21) disposed in that chamber and fastened to a second side (32) of the piston turned towards that chamber, and a parking brake (7) disposed in the body and including a blocking device (20) disposed in that chamber and movable to act on the rod, and a movable actuating device (23, 24) which with the body delimits a parking brake pressure chamber (25) supplied by a second source; the blocking and actuating devices being configured to immobilize/unblock the rod so as to block/unblock the piston in a position.

Abstract: A rail vehicle braking system includes a service brake (6) having a movable piston (8) delimiting with a body (2) of the system a service brake chamber (13) supplied by a first source, and a parking brake (7) having a blocking device (20) having a position in which it immobilizes the piston in a position, and a movable actuating device (23, 24) delimiting with the body a parking brake chamber (25) supplied by a second source and having a stable position in which it holds the blocking device in its position; the service chamber, when the actuating device is in its stable position, being supplied by the second source of which the pressure is greater than that of the first source in order to apply a greater braking force than the force applied when the piston is in its position.

Abstract: A railway brake cylinder includes a body (11?); a piston (13?) mobile relative to the body (11?) to act on a brake linkage and delimiting with the body (11?) a pressure chamber (10?) adapted to be supplied by a pneumatic pressure agent source; an auxiliary actuating member (26?) mobile relative to the body (11?) and the piston (13?), mechanically connected to manual operating elements to cause it to occupy either a rest position in which it is away from the piston (13?) or a pushing position in which it is in contact with the piston (13?); two orifices (73?, 51?) in fluid communication with the chamber (10?) and the atmosphere, respectively; and selective connecting elements (28?) between the two orifices (73?, 51?), the elements (28?) being mechanically connected to the auxiliary actuating member.

Abstract: A railway brake cylinder includes a body (11?); a piston (13?) mobile relative to the body (11?) to act on a brake linkage and delimiting with the body (11?) a pressure chamber (10?) adapted to be supplied by a pneumatic pressure agent source; an auxiliary actuating member (26?) mobile relative to the body (11?) and the piston (13?), mechanically connected to manual operating elements to cause it to occupy either a rest position in which it is away from the piston (13?) or a pushing position in which it is in contact with the piston (13?); two orifices (73?, 51?) in fluid communication with the chamber (10?) and the atmosphere, respectively; and selective connecting elements (28?) between the two orifices (73?, 51?), the elements (28?) being mechanically connected to the auxiliary actuating member.

Abstract: The cylinder of the combined service and spring brake comprises a service brake piston rod capable of being connected to a brake linkage by means of a clearance adjuster. It combines the releasing pistons (26, 50) of the spring brake and service brake cylinder (2) with its piston (11) and its piston rod (12) provided with a clearance adjuster (16), and at least a dividing attachment rotating between the spring piston (26) and the ring-shaped base (37), such as a spindle (55) simultaneously passing through an axial bore (56) provided in the ring-shaped base (37) and a conjugated blind bore (57) provided in the spring piston (26). The invention is applicable to combined spring cylinders using the service brake clearance adjuster.