CLAMP HAVING A LOAD CLAMPING HYDRAULIC CYLINDER WITH MULTIPLE TELESCOPICALLY EXTENSIBLE STAGES ADAPTED TO APPLY LOAD CLAMPING FORCE ALTERNATIVELY RESPONSIVE TO LOAD LIFTING FORCE OR LOAD SIZE

摘要

A load handling clamp mountable on a lift truck has one or more hydraulic clamping cylinders of the type having two or more sequentially extensible stages capable of applying either load weight responsive variable hydraulic load clamping force or alternatively load size responsive variable hydraulic load clamping force without risking the clamps dropping of a clamped load. The length of the hydraulic clamping cylinder(s) may in some applications extend generally forwardly from a supporting lift truck and in other applications extend generally laterally from a supporting lift truck.