Patent Number: 6,305,756

Title: Short travel detector for empty/load brake control

Abstract: An empty/load brake control system mountable on a sprung and an unsprung member of a railway car and disposed between the car brake control valve and brake cylinder for adjusting the brake cylinder pressure during a brake application according to the car load condition. Such system includes an empty/load sensor valve device and a sensor arm coupled to a sensor cable whose movement is controlled by a sprung member and a terminal member disposed on an end of sensor cable, in contact with sprung member so that any downward movement of sprung member forces such terminal member in a similar downward direction and similarly pulls on the sensor cable. A piston, under pressure, urges the sensor arm to rotate and retract sensor cable but must overcome resistance of a spring. The system includes a load proportional valve.

Inventors: Scott; Daniel G. (Pittsburgh, PA), Krampitz; Mark S. (Hunker, PA)

Assignee: Westinghouse Air Brake Company

International Classification: B60T 8/18 (20060101); B60T 008/18 ()

Expiration Date: 10/23/2018