System for raising and lowering portable cargo containers

Details System for raising and lowering portable cargo containers System for raising and lowering portable cargo containers

1986-06-16

1987-11-24

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Vehicle-body lifters

B66F 726

Patent

active

047083190

ABSTRACT:
A system for raising and lowering portable cargo containers that utilizes at least four jack attachment brackets, four screw jacks each having a support nut on their screw member, and means to raise and lower the screw jacks simultaneously. Each of the jack attachment brackets has a major vertical plate member and a minor vertical plate member that are connected together to form a right angular structure. There are elongated apertures adjacent to both of their bottom ends. Locking pins are inserted through the apertures into aligned holes that are located in fittings at the bottom corners of the portable cargo containers. A horizontal support plate extends outwardly from the top edge of the major vertical plate member at a ninety degree angle. A slot is formed in its outer most edge to allow passage therethrough of the screw of a screw jack. A nut on the screw would be captured by the horizontal support plate thereby lifting and lowering the jack attachment bracket as the screw jack is operated. A pair of stabilizing guide bars have apertures adjacent their opposite ends that receive the top ends of the screws of the screw jacks. Guide rollers are mounted along the interior wall surface of the stabilizing guide bars and they maintain contact with the walls of a cargo container as it is raised and lowered.

REFERENCES:
patent: 753053 (1904-02-01), Eberhardt
patent: 3317236 (1967-05-01), Connerat et al.
patent: 3749363 (1973-07-01), Hauser
patent: 3881689 (1975-05-01), Bury et al.
patent: 4045000 (1977-08-01), Mai
patent: 4082250 (1978-04-01), Allmon et al.
patent: 4594017 (1986-06-01), Hills

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