FREIGHT CAR TRUCK FRICTION STABILIZER PROVIDING CONSTANT FRICTION FORCE FROM EMPTY CONDITION TO OXIMATELY ONE HALF LOADED CAR CONDITION AND VARIABLE DAMPING THEREAFTER

摘要

A stabilized railroad car truck has a side frame with a window, a bolster extending into the window, a stabilizer pocket on each side of the bolster and a friction element in each pocket. The spring means supporting each friction element provide generally constant column pressure from each friction element onto its associated side frame wearing area from no load up until approximately half-load, with linearly increasing column pressure from approximately half-load up until full load.