Patent ID: 6698849
Filing Date: 2004-03-02
Classification: B60T

Abstract:
A pneumatic pressure control device for an empty/load changeover valve on a railway car, which enables such empty/load changeover valve to have a lower profile, said pneumatic pressure control device comprising:(a) a mounting member disposed at one end of said empty/load changeover valve, said mounting member having a lower first surface and an upper second surface and further having an actuating push rod horizontally disposed for reciprocal movement therethrough; (b) a sensor arm of a predetermined size and shape having a first end and a second end; (c) a first means disposed adjacent at least one of said first surface and said second surface of said mounting member for pivotally supporting said sensor arm in a predetermined position; (d) a second means engageable with said sensor arm and said actuating push rod on said mounting member for moving said push rod in response to a movement of said sensor arm; (e) a load sensing means threadedly engaged into said second end of said sensor arm along a longitudinal axis of said sensor arm adjacent said second end for determining a rate of brake cylinder pressure required relative to an actual weight of such railway car; and (f) a predetermined travel limit of said sensor arm and said load sensing means.