Patent ID: 6238012
Filing Date: 2001-05-29
Classification: B60T

Abstract:
A release cap engageable with a service portion of a brake control valve on a railcar for controlling brakes on said railcar, said release cap capable of alternatively switching said brake control valve between a direct state in which said brakes are released directly and a graduated state in which said brakes are released gradually without removal of said release cap from said brake control valve, said release cap comprising:(a) a housing having a hollow portion therein and means for mounting the housing to the control valve;(b) a spool positioned for movement in said hollow portion to at least a first and a second position, said movement from said first and second positions enabling connection of a series of internal passages within said air brake control valve so as to place said air brake control valve in one of said direct state and said graduated state;(c) holes located in various positions within said spool; and(d) means capable of cooperating with one of said holes for locking said spool in said first position, said means also capable of cooperating with another one of said holes for locking said spool in said second position.