RAILWAY VEHICLE BRAKE Russian patent published in 2009 - IPC B61H11/02 B60T13/26 B60T17/08 

FIELD: railway transport.

SUBSTANCE: proposed brake comprises brake line communicated, via air control valve, with standby reservoir and principal braking cylinder. Piston of the latter is rod-connected with brake clamp control lever. Principal cylinder piston is furnished with second rod arranged in both principal braking cylinder and additional cylinder to come in contact with piston of the latter loaded with compression spring. Inner chamber of cylinder communicates, on the side of principal cylinder second rod and via pipeline, with standby reservoir. Aforesaid compression spring is arranged in movable barrel locked relative to tract vehicle frame.

EFFECT: ruling out spontaneous motion in case pneumatic brake goes dead.

1 dwg