Material or article handling – Self-loading or unloading vehicles – With load-receiving portion – or significant section thereof,...
Patent
1983-01-10
1985-04-30
Spar, Robert J.
Material or article handling
Self-loading or unloading vehicles
With load-receiving portion, or significant section thereof,...
403101, 298 38, B60P 100
Patent
active
045141312
ABSTRACT:
The present invention relates to an automatic self-locking roll back carrier of the type that is adapted to be mounted on a vehicle. The roll back carrier includes a sub-frame and a lift frame pivotably mounted thereto. Movably mounted to the lift frame is a load bed. Operatively interconnected between the sub-frame and lift frame is a pair of hydraulic lift cylinders. Interposed between the hydraulic lift cylinders and lift frame is a locking bar assembly that is movably mounted between longitudinally spaced stops in the lift frame. Secured to the sub-frame and disposed adjacent the locking bar assembly when the lift frame is in a transport position is a locking structure. The locking structure is so positioned with respect to the position occupied by the locking bar assembly when the lift frame is in a transport position that the locking structure effectively overlies the locking bar assembly and locks the lift frame to the sub-frame. Actuation of the lift frame from a transport to a loading position results in the locking bar assembly traveling generally horizontally a predetermined distance such that it is no longer locked by the locking structure and is free to move up with the lift frame as the same is lifted by the lift cylinders.
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patent: 4249851 (1981-02-01), Sedelmayer
patent: 4318658 (1982-03-01), McIntyre
Bucci David A.
Spar Robert J.
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