Abstract: An improved scissors lift which includes a hydraulic mechanism, in the form of one or more hydraulic cylinder/piston units, mounted on scissors linkages in an essentially vertical position in appropriate cradles between two arm pairs of the linkages, at a position in which there is substantial movement at both ends of the hydraulic unit. The cylinder/piston hydraulic unit is so mounted to exert a thrust primarily in the direction of the load for all positions of the linkages, and to provide an essentially constant load/thrust/speed ratio for all positions of the linkages, and also to permit full extension of the linkages without excessive movement of the hydraulic piston. The arms of the scissors linkages are provided with ear-shaped brackets at each end which serve to displace the pivotal axes between the arms away from the horizontal axes of the respective arms so as to permit the arms to be folded down directly on top of one another when the lift is in its collapsed position.

Abstract: An improved scissors lift is provided which includes a working platform, two scissors linkages, a frame, and a hydraulic mechanism, all of which combine to permit the working platform to be elevated in a horizontal plane to any desired height, and to permit the lift to be collapsed to a compact position when not in use. The hydraulic mechanism, in the form of one or moe hydraulic cyliner/piston units, is mounted on the scissors linkages in an essentially vertical position in appropriate cradles between two of the arm pairs of the linkages, at a position in which there is substantial movement at both ends of the hydraulic unit. The cylinder/piston hydraulic unit is so mounted to exert a thrust primarily in the direction of the load for all positions of the linkages, and to provide an essentially constant load/thrust/speed ratio for all positions of the linkages, and also to permit full extension of the linkages without excessive movement of the hydraulic piston.

Abstract: An improved scissors lift is provided which includes a working platform, two scissors linkages, a frame, and an hydraulic mechanism, all of which combine to permit the working platform to be elevated in a horizontal plane to any desired height, and to permit the lift to be collapsed to a compact position when not in use. The hydralic mechanism, in the form of one or more hydraulic cylinder/piston units, is mounted on the scissors linkages in an essentially vertical position in appropriate cradles between two of the arm pairs of the linkages, at a position in which there is substantial movement at both ends of the hydraulic unit. The cylinder/piston hydraulic unit is so mounted to exert a thrust primarily in the direction of the load for all positions of the linkages, and to provide an essentially constant load/thrust/speed ratio for all positions of the linkages, and also to permit full extension of the linkages without excessive movement of the hydraulic piston.