Patent ID: 7396218

Claim:
A pumping apparatus to be powered by a single human operator, comprising: a frame; a two-chambered valve box connected to said frame, said valve box having an inlet chamber and an outlet chamber; a vertically mounted cylinder connected to said frame above the valve box, said cylinder having a fastener-less pump valve assembly having inlet and outlet valves; a dual-action suction and pressure piston operatively connected to said frame to move up and down inside said cylinder; a transverse see-saw-style rocker having first and second foot pads, said rocker connected to said frame and operatively connected to said dual-action suction and pressure piston, said rocker to operate said piston when said human operator stands with one foot on each foot pad and shifts said operator's weight from said first to said second pad in a see-saw like manner; a surge chamber operatively connected to said frame and associated with said inlet chamber to regulate smooth water flow; a foot valve assembly having an inlet valve; said outlet valve of said pump valve assembly comprising: a valve plate comprising a first aperture and a plurality of second apertures being smaller than said first aperture; a small diameter solid shaft mounted from inside of said valve box in a vertical position such that said shaft's center is centered to said first aperture; a first rigid washer mounted on said central vertical shaft and positioned parallel to and slightly below said valve plate and centered to said first aperture to create an annular gap between said first rigid washer and said first aperture; a concave upward rigid washer also mounted on said vertical shaft having an outside diameter smaller than said first aperture's diameter and larger than said first rigid washer's outside diameter; and a valve seal with a central hole of a diameter equal to the vertical shaft diameter; wherein said valve seal is inserted through said annular gap and said valve seal central hole is stretched over said first rigid washer such that said valve seal sits between said first and concave upward rigid washers so that said concave upward rigid washer tensions said valve seal against said valve plate to cover said plurality of second apertures thus closing said valve assembly in its natural position; and wherein said outlet valve of said pump valve assembly functions as said foot valve's inlet valve.