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US 6,643,880 B1Granted
Dock leveler
AssigneeKelley Company, Inc.
InventorsDouglas H. Massey, Kim Duvernell
Life of this patent
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AssigneeKelley Company, Inc.
InventorsDouglas H. Massey, Kim Duvernell
Estimating the term…
A dock leveler including a ramp having a rear edge movably interconnected with a loading dock, an intermediate member movable relative to the ramp, and an inflatable assembly positioned to cause relative movement between the ramp and the intermediate member upon inflation of the inflatable assembly, thereby resulting in movement of the ramp. The intermediate member is movably mounted to a pit floor, a support structure, or the ramp. A roller member is mounted to an end of the intermediate member. The inflatable assembly can be operatively associated with a vacuum device to allow for selective removal of gas from the inflatable assembly. Alternatively, a hydraulic assembly and a support frame may replace the inflatable assembly and intermediate member. The dock leveler includes hook-type bracket members and mounting bores to accommodate either powering arrangement.
A dock leveler adapted to be mounted to a loading dock, the loading dock having an upper dock surface and having a pit disposed in the upper surface, the dock leveler comprising:
A dock leveler adapted to be mounted to a loading dock, the loading dock having an upper dock surface and having a pit disposed in the upper surface, the pit having a pit floor, the dock leveler comprising:
A method of producing a dock leveler adapted to be mounted to a loading dock, the loading dock having an upper dock surface and having a pit disposed in the upper surface, the pit having a pit floor, the method comprising:
Dependencies are inferred from the claim text.