Vehicle mounted fork lift and method
AssigneeBig Hat Investments, LLC
InventorsMichael W. Bristow, Jeffrey D. Marsh
Life of this patent
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AssigneeBig Hat Investments, LLC
InventorsMichael W. Bristow, Jeffrey D. Marsh
Estimating the term…
A fork lift apparatus is mounted on a truck for picking up a load, placing the load in a traveling position on the truck, and for unloading the load. The apparatus comprises a lift frame, a shaft, a pair of spaced arms secured to the shaft, a cross member spanning between the distal ends of the arms distal and carrying the forks. The cross member is rotatable relative to the support arms. A pair of drive hydraulic cylinders rotates the shaft and thus moves the arms and the load between a loading/unloading position in which the load may be placed on the forks and the traveling position so that the load may be transported by the truck. A self-leveling system is provided for maintaining the load in a substantially level position as it moves between its loading/unloading and traveling positions.
Load lifting apparatus adapted to be mounted on a truck or other vehicle for picking up a load from a loading/unloading position, for placing said load in a traveling position on the truck, and for unloading said load, said apparatus comprising a lift frame configured to be mounted on said truck, a shaft journalled with respect to said lift frame, a pair of spaced arms secured to and rotatable with said shaft, a cross member spanning between said arms distal from the connection of said arms to said shaft, and at least one load lifting member supported from said cross member, said cross member and said load lifting member carried by said cross member being rotatable with respect to said support arms, a drive for rotating said shaft between a first shaft position in which said load lifting member is in said loading/unloading position such that with said lift frame mounted on said truck, said load lifting member is in a substantially horizontal position so that the load may be positioned on said load lifting member and a second shaft position in which said load lifting member and said load carried thereby are in said traveling position, said drive being operable in reverse direction for rotating said shaft from said second shaft position to said first shaft position so as to move said load lifting member and said load from said traveling position to said loading/unloading position so that said load may be unloaded from said load lifting member, and means for maintaining said load lifting member and said load carried thereby in a substantially level position as said shaft is rotated between its said first and second positions to effect movement of said lifting member and said load between said loading/unloading and traveling positions.
A method of lifting a load from a loading/unloading position in which the load is supported on the ground, for transferring the load to a traveling position on a vehicle, and for unloading the load and moving the load to its loading/unloading position, the method employing a lift having a lift frame configured to be secured to the frame of said vehicle, a pair of side arms, a cross member carried by the distal ends of said side arms, a pair of forks carried by the cross member, a drive for moving said side arms and the load carried by said forks between the loading/unloading and traveling positions, said method comprising the steps of:
Dependencies are inferred from the claim text.