Method and apparatus for unstacking and unloading a stacked load

Details Method and apparatus for unstacking and unloading a stacked load Method and apparatus for unstacking and unloading a stacked load

1995-08-29

1997-01-28

Brahan, Thomas J.

Material or article handling

Self-loading or unloading vehicles

Loading or unloading by other carrier or mover means, and...

414341, 414540, 414786, 4147975, B60P 144

Patent

active

055972829

ABSTRACT:
An extensible arm is located in the bed of a truck or a trailer and is selectively operable to assist in the stacking or unstacking and unloading of a stacked palletized load from the elevated bed to the ground level using a load lift on the truck or trailer and a pallet jack. The stacked load is moved from the bed onto the load lift with a pallet jack or other load transporter, and the load lift is lowered to a position where the extensible arm can be extended below the pallet of an upper load portion of the stacked load. After the arm is extended, the load lift is lowered to the ground leaving the upper load portion on the extended arm and moving the lower load portion of the stacked load to the ground, thereby unstacking the load. Thereafter, the lift is raised to engage the upper load portion, the arm is retracted, and the lift is lowered to lower the upper load portion to the ground.

REFERENCES:
patent: 1603387 (1926-10-01), Heise
patent: 2512798 (1950-06-01), Hodges
patent: 3589537 (1971-06-01), Petersen
patent: 5112183 (1992-05-01), Nusbaum et al.
patent: 5411363 (1995-05-01), Ishii

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