ROLLING STOCK BRAKE BLOCK Russian patent published in 2008 - IPC B61H7/02 F16D65/06 F16D65/02 

FIELD: machine building.

SUBSTANCE: brake block contains a polymer friction composite material with U-shaped transverse recess made on its working surface. The polymer friction composite material is fixed on a metal frame with U-shaped ledge in its central part. The said composite material incorporates an additional polymer friction element containing 40 to 96% of metal chips pressed in along the perimeter of the U-shaped recess on the working surface.

EFFECT: greater distance run between overhauls of the wheel pair.

2 dwg