Patent ID: 6264288
Filing Date: 2001-07-24
Classification: B60T,B61H

Abstract:
A brake system for rail cars, comprising:(a) an air powered fluid system with an inlet port and an outlet port for for producing a first flow of hydraulic fluid under pressure at said output port of said air powered fluid system in response to an air flow under pressure supplied to said inlet port,(b) means for producing a second flow of fluid under pressure,(c) a manifold connected to said output port and to said means for producing a second flow of fluid under pressure, wherein:1. said manifold contains means for simultaneously delivering said first flow of fluid under pressure to each of a first movable cylinder and a second movable cylinder when said first flow of fluid is at a first specified level of pressure,2. said manifold contains means for simultaneously delivering said second flow of fluid under pressure to each of said first movable cylinder and said second movable cylinder when said first flow of fluid is at a pressure lower than a second specified level of pressure,3. said brake system comprises means for terminating the said second flow of fluid under pressure to said manifold whenever air flow greater than a third specified level of pressure is being supplied to said inlet port,(d) a first slack adjuster and a second slack adjuster attached to said first movable cylinder, and(e) a third slack adjuster and a fourth slack adjuster attached to said second movable cylinder.