Apparatus and process for removing and dispensing liquid from a receptacle

A process for removing and dispensing liquid from a receptacle through a discharge passage of a discharge spout formed integrally with a pump housing having a fluid chamber with a fluid intake port and a fluid discharge port, a pump annulus with an annulus venting port and defined as the space between the side of the pump housing and the fluid chamber, spring biased means housed within the fluid chamber and supporting and biasing upwardly a piston that snugly slidably traverses the inside wall of the cylindrical fluid chamber, an upwardly biased actuator button supported by the top of the piston, a bottom plug engaged to the bottom of the pump housing and formed with a plug shoulder and at least one plug valve port and a plug intake port and a depending conduit boss extending axially downward communicating with the plug intake port and including a removable tube attached thereto to reach nearly to the bottom of the receptacle, a cylindrical skirt rotatably lodging between the bottom of the pump housing and the plug shoulder and internally threaded for application to the open neck of the receptacle, the process comprising the steps of:

• (a) interposing a diaphragm means between the bottom of the pump housing and the bottom plug to seal off the communication of the fluid discharge port of the fluid chamber and the discharge passage of the discharge spout, and to seal the annulus venting port, the diaphragm means has a structure defining a diaphragm vent opening and a flap valve which pivotally covers the bottom plug intake port;
• (b) pushing repeatedly downward the upwardly biased actuator button to cause the upward movement of the upwardly biased piston to open the flap valve and draw liquid through the removable tube, the plug intake port, through the fluid intake port into the fluid chamber until the same is substantially full;
• and
• (c) pushing down the upwardly biased actuator button after the fluid chamber has become substantially full in accordance with step (b) to close the flap valve and depress the portion of the diaphragm means covering the fluid discharge port to bulge the diaphragm means in order to open up communication between the fluid discharge port and the discharge passage to dispense liquid from the fluid chamber through the discharge passage.