Material or article handling – Self-loading or unloading vehicles – With load-receiving portion – or significant section thereof,...
Patent
1992-01-08
1993-11-23
Werner, Frank E.
Material or article handling
Self-loading or unloading vehicles
With load-receiving portion, or significant section thereof,...
414483, 414494, 298 9, 16DIG43, 16362, 16382, B60P 104
Patent
active
052638073
ABSTRACT:
A roll-back, flat-bed truck comprising a cab at the front end and a frame at the rear end and a flat-bed with a curved leading edge secured thereto by securement members. The securement members include a hinge having a lower hinge half coupled to the frame adjacent to the rear end of the frame and an upper hinge half coupled to the bed. A hinge pin couples the hinge halves to allow tilting the upper hinge half and bed with respect to the lower hinge half and frame about a horizontal axis. A swivel plate is attached to the frame adjacent to the rear end of the frame and a swivel member positioned in an aperture extending through the swivel plate to allow swiveling of the bed with respect to the frame about a vertical axis. The center of curvature of the leading edge of the bed is coextensive with the axis of rotation of the swivel member. An intermediate support is attached to the upper surface of the upper hinge half with a component to slidably couple the bed thereto to allow for rolling the bed longitudinally with respect to the intermediate support, hinge and frame. A first drive is provided to slide the bed longitudinally with respect to the intermediate support, hinge and frame. A second drive is provided to tilt the bed, intermediate support and upper hinge half with respect to the lower hinge half, swivel plate and frame. A third drive is provided with a component adjacent to the front end of the intermediate support to swivel the bed, intermediate support and hinge with respect to the frame.
REFERENCES:
patent: 399806 (1889-03-01), Wayman
patent: 2485300 (1949-10-01), Lisota
patent: 4470746 (1984-09-01), Delachapelle
patent: 4702662 (1987-10-01), Marlett
patent: 4750856 (1988-06-01), Lapiolahti
patent: 5011362 (1991-04-01), Pijanowski
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