Lift truck mast and carriage assembly

Abstract From the Canadian patent

of the Invention, A power-up and power-down mast and carriage assembly for a lift truck of the type having a stationary mast section fixed to the truck a movable, inner mast section reciprocable within the stationary mast, a fork carriage movably associated with the inner mast section, a double-acting hydraulic ram having an extensible and retractable cylinder and piston rod assembly operatively connected between said mast sections for extending and retracting the inner mast section relative to the stationary mast section. Lost-motion couplings interconnect both power-up and power-down chains with the stationary mast and carriage in a closed loop chain rigging system. The lost-motion …