Level lifting system for truck bodies or containers
AssigneeOfficine Franchin di Giuliano Franchin & C. S.a.s.
InventorFranco Franchin
Life of this patent
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Abstract
To avoid instability, tilting or overturning of containerized freight or truck bodies during raising and lowering thereof, four double-acting lift cylinders are disposed at the four corners of a rectangular array, the cylinders comprising two pairs of cylinders, each pair of which comprises one cylinder which is connected in series to the respective cylinder at the diagonally opposite corner of the rectangular array of cylinders.
Claims4
A lifting system for truck bodies and the like comprising four double-acting cylinder-piston units arranged in a rectangular array, each cylinder-piston unit in said array having an upper and a lower chamber on opposite sides of the piston of such unit, conduit means serially connecting the lower chambers of one pair of units in the array with the upper chambers of the pair of units which are diagonally opposite in said array, conduit means connected with the upper chambers of said one pair of units and feeding pressurized fluid to said upper chambers in parallel, return conduit means connected with the lower chambers of the second-named pair of units in said rectangular array and returning fluid from said lower chambers in parallel to a source of fluid, a fluid pumping means connected with said source of fluid, and a fluid distributor connected with the pumping means and with the second-named and return conduit means, said double-acting cylinder-piston units having extensible and retractable members which are ground-engageable, and said cylinder-piston units being adapted for attachment to a container body.
Dependencies are inferred from the claim text.