Patent ID: 7150592

Claim:
An auto-rack railroad car supplemental restraint for an auto-rack railroad car having a primary restraint system for a vehicle, said primary restraint system including a grating and a primary restraint adapted to be releaseably attached to the grating, said supplemental restraint comprising: a tire engager configured to be positioned between a tire of the vehicle on the grating and the primary restraint on the grating; and an expander including a base connected to the tire engager, said base including a plurality of steps, at least one of the steps of the base including a plurality of sub-steps, and an expanding member movable to a non-expanded position and at least one expanded position relative to the base, said expanding member including a plurality of steps, at least one of said steps of the expanding member including a plurality of sub-steps configured to co-act with the sub-steps of said step of the base.