Patent ID: 7459802

Claim:
An energy conversion system comprising a carriage mounted for linear reciprocal motion means for moving said carriage in a reciprocal path of travel; a plurality of one way drive means mounted on said carriage; a pair of pulleys/sprockets mounted in fixed positions adjacent the ends of the path of travel of the carriage, a drive belt/chain engaged with said pair of pulley/sprockets, said plurality of drive means being engaged in a predetermined pattern with said drive belt/chain for driving the drive belt/chain in a single direction during reciprocation of the carriage; at least a second pair of pulleys/sprockets located in vertically aligned relation, a weight lifting belt/chain engaged with said second pair of pulleys/sprockets, weight means secured to said weight lifting belt/chain and over running clutch means engaged between one of said first pair of pulley sprockets and one of said second pair of pulley sprockets for driving said weight lifting belt/chain in a first vertical direction to move said weights vertically to pass over the top most of said second pair of sprocket/pulley and for allowing said weight to free fall and drive said weight lifting belt/chain in the same direction under the influence of gravity; a rotary operated electrical generator and means for transferring the rotational motion of at least one of the second pair of pulley/sprockets to said electrical generator for producing electricity only during downward motion of said weights.