Patent ID: 7963750
Filing Date: 2011-06-21
Classification: F04B

Abstract:
1. A hydraulic pump comprising: a pump outer wall body having a wall body; a waterway through which water is fed into the pump outer wall body; a moving pressing member; wherein the moving pressing member comprises an open/close valve to supply the water into an inner space of the moving pressing member, a discharge open/close valve to discharge the water of the inner space, and a water passage valve to feed the water from the waterway to a lower reservoir, which opens as the moving pressing member moves upward, and closes as the moving pressing member reaches to a surface of the water which is fed into the pump outer wall body; the moving pressing member being longitudinally movably housed within the pump outer wall body to compress the lower reservoir and move downward as the water is fed from the waterway, and to move upward due to buoyancy as the water is discharged from the discharge open/close valve after being fed from the open/close valve; a pumping pipe which is connected to a bottom of a base side of the pump outer wall body to transport the water by the downward movement of the moving pressing member; and a discharge pipe, which is connected to the bottom of the base side of the pump outer wall body to discharge the water after the water is fed to the moving pressing member which is in the bottom of the pump moving pressing member.