A unique actuator which extends itself by continuously building onto a vertical cylinder from below. This lifting device is finding his ways from theater-set and stage lift into industrial lifting equipment. It is 100% mechanical (no hydraulics) and is suitable for the most demanding applications as clean and sterile environments, computer, high tech assembly area, food preparation room. Precise to the 1/32-in with no vertical creep as it is as solid as a steel column. Can be linked to a complete material handling system with PLC control. The smooth operation require no particular noise isolation like hydraulic systems. This device is covered by the US patent #4,875,660.
