Patent ID: 6666528
Filing Date: 2003-12-23
Classification: B60T

Abstract:
An empty-load system comprising:a first housing having brake cylinder, control valve, equalization volume reservoir and pilot ports; ratio means, in the first housing and having a ratio piston and a ratio valve, for controlling the connection of the control valve port to the brake cylinder port and to the equalization port; a pilot piston in the first housing being responsive to a pilot pressure at the pilot port to operate the ratio valve; a second housing having a brake cylinder port and a pilot port connected respectively to the brake cylinder port and the pilot port of the first housing; a sensor means, in the second housing and having a sensor piston, for sensing a load of a railroad car; and a sensor valve, in the second housing and connected to the sensor piston, connects the brake cylinder port to the pilot port for a first position of the sensor piston.