veljkomil kovic and his free energy machine

Veljkomil Kovic a Russian inventor has discovered a free energy mechanical device that works from gravity.It seems to use gravity and a pendulum motion to occillate back and forth for extended periods of time with great force.Although it may be totally free it is still overunity as it takes very little energy to put it into motion ,yet it puts out many times more energy than it takes to start.You can go to his website and check out his invention below.It may not seem like a big deal but it proves a point we with what like force we can exert with our hands can with great advantage use a mechanical devise to control  much larger energy using gravity or levers or pullys.If we can do it mechanically,there is no reson we can't do it electromechanically and electronically with no moving parts.All these technologies are what we would call free energy.It's being done everyday without fanfare by ordinary people.