Patent ID: 8056768
Filing Date: 2011-11-15
Classification: A47K,B05B

Abstract:
1. A foam pump assembly for dispensing foam, comprising: a dual piston pump engine having an air cylinder and fluid cylinder, said cylinders having an air piston and a liquid piston, respectively, said liquid cylinder having a liquid inlet valve and a liquid outlet valve, said air cylinder having an air inlet valve and an air outlet, a mixing chamber in communication with the liquid cylinder through the liquid outlet valve for receiving liquid, and in communication with the air cylinder through the air outlet for receiving air, an outlet chamber in communication with the mixing chamber and in communication with a pump outlet for dispensing foam, said outlet chamber comprising a plurality of stacked and spaced disks with support members between the disks which cross each other providing a flow path with successive turns, whereby when air and fluid is fed into said mixing chamber foam is created which passes into the outlet chamber, through the flow path and out of the pump outlet.