Patent ID: 8558432

Claim:
An inlet unit shaped cylindrically or rectangularly with smaller cross sectional area with one end opened to the incoming external force, and an exit unit shaped similarly to the inlet unit, but with larger cross sectional area, wherein the inlet unit and exit unit are linked through a tunnel or bridge, and both the inlet unit and the exit unit are filled with an incompressible fluid; the inlet unit comprises a piston and the exit unit comprises an upper piston and a lower piston; the exit unit is open to the atmosphere at an upper portion, which includes an upper energy extractor, and a lower portion, which is open to a lower energy extractor; wherein the upper energy extractor comprises: an array of piezoelectric cells fixed at one side to an upper tray of the exit unit, wherein the upper tray of the exit unit is stationary, the upper tray of the exit unit is fixed above the upper piston of the exit unit, the upper tray of the exit unit is made from an electrically insulating material with smaller cross sectional area than the upper piston of the exit unit; and a plurality of upper collecting electrodes; wherein the lower energy extractor comprises: an unfilled basin, the basin further comprising: an electromechanical switch which grasps the lower piston of the exit unit, wherein the lower piston of the exit unit is made from an electrically insulating material, and moves freely up and down; a lower tray of the exit unit, which is made from an electrically insulating material, but heavier than the lower piston of the exit unit; and a plurality of lower collecting electrodes, wherein the lower tray and the lower piston of the exit unit have equal volumes, and the lower tray is fixed to several coil springs, the coil springs being fixed to the bottom of the basin, and wherein an array of piezoelectric cells is sandwiched between the lower piston and the lower tray of the exit unit.