Importance

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Abstract

A hydraulic dock leveler having a pivotable main deck, a lip member pivotably connected to the main deck, and a hydraulic system for pivoting the main deck relative to an adjacent loading dock platform and for power extending and power retracting the lip member between a bridging and stored position. The hydraulic system includes valve means to hydraulically hold the lip member in a fully extended bridging position while the main deck is descending relative to the adjacent loading dock platform. When the main deck reaches its lowest level relative to the loading dock platform, the valve means moves to an open condition and the hydraulic system will simultaneously extend the main cylinder to raise the main deck and retract the lip cylinder to pivot the lip member to a stored position.

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First Claim