Patent ID: 8286757

Claim:
A wheel restraint system to engage a wheel of a vehicle at a loading dock, the wheel restraint system comprising: a base that includes a top surface having a first plurality of teeth and a first vertical resistance feature adjacent the first plurality of teeth and having a continuous surface extending substantially along a longitudinal length of the base, the first plurality of teeth being distinct from the first vertical resistance feature; and a wheel chock that includes a bottom surface having a second plurality of teeth and a second vertical resistance feature adjacent the second plurality of teeth, the second plurality of teeth being distinct from the second vertical resistance feature, the wheel chock being selectively movable between a blocking position and a release position such that: a) in the blocking position, the wheel chock obstructs the wheel, the bottom surface is in intermeshing engagement with the top surface to limit relative horizontal movement therebetween, and the second vertical resistance feature is underneath the continuous surface of the first vertical resistance feature to resist or prevent vertical separation between the bottom surface and the top surface; and b) in the release position, the wheel chock is clear of the wheel, the bottom surface is spaced-apart and above the top surface, and the second vertical resistance feature is spaced-apart and above the first vertical resistance feature.