Patent ID: 6386231
Filing Date: 2002-05-14
Classification: F04B,Y10T

Abstract:
A valving system for pumping water or other liquids and configured to simulate a fully functional, hand operated pump, comprising:an elongated, generally cylindrical housing having an axial bore therein; a spout assembly including a spout chamber and a discharge spout mounted at one end of the housing; a piston rod engaging in said axial bore in the housing and connected to said handle; a plurality of axially spaced pistons snugly engaging in said bore and located at predetermined spaced axial positions along said piston rod; an inlet port in said housing connected to a suitable source of liquid under pressure; axially spaced flow control ports connected by a line; means for actuating said piston rod axially in said bore between a position wherein said inlet port is blocked by said pistons from delivering fluid under pressure to said flow control ports and a position wherein said pistons permit flow of pressurized fluid from said inlet port through said flow control ports and line to said spout chamber, thereby simulating fully functional hand manipulated pumps.