The majority of all loading dock positions service varying heights of incoming trucks, it is important to have a dock leveler service trucks higher than finished floor level. The hinged lip assembly when fully extended is not level (not the same trajectory) with the dock leveler deck assembly, by design it is slightly tapered downward. If the lip did not have this tapered downward (crown) feature when a truck is in position that is higher than the floor level the tip of the lip would project upwards creating a barrier. Dock levelers can be ordered with reduced lip crown, this would be appropriate when the finished floor height and the truck bed height are consistently the same.
Contact a Pentalift Sales Representative for more information.