Patent ID: 7431182

Claim:
A dispenser for dispensing a foamed soap product comprising: an air chamber retaining air, a soap chamber retaining soap, a mixing chamber for receiving soap and air, a piston, and an extrusion screen; a dispensing nozzle having an outlet for dispensing soap; a suction chamber that is expandable and contractible in volume and disposed between said foamed soap pump and said dispensing nozzle and predisposed to an expanded volume, wherein actuation of said foamed soap pump forces said piston to move to force air from said air chamber and soap from said soap chamber into said mixing chamber to create a foamed soap, and thereafter further force said foamed soap through said extrusion screen, suction chamber and dispensing nozzle to said outlet to dispense foamed soap, further wherein actuation of said foamed soap pump causes said suction chamber to contract to a contracted volume that is less than said expanded volume and forces soap through said suction chamber and said dispensing nozzle to said outlet to dispense soap, and further wherein soap that has not been dispensed at said outlet resides in said dispensing nozzle after actuation of said foamed soap pump and is sucked back into said suction chamber during a return of said suction chamber to said expanded volume to which it is predisposed.