Diaphragm foam pump

Details Diaphragm foam pump Diaphragm foam pump

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 43/04 (2006.01) B67D 99/00 (2010.01) A47K 5/12 (2006.01) A47K 5/14 (2006.01)

Patent

CA 2669521

A diaphragm foam pump including a diaphragm made of a flexible material defining a mixing chamber and having an inlet opening and an outlet opening. An inlet passageway is in fluid communication with a reservoir containing a foamable liquid and the inlet opening, with the inlet passageway having a one-way valve therein. The pump also includes an outlet passageway in fluid communication with the outlet opening and having a one-way valve therein, and an air inlet in the inlet passageway having a one-way valve. The diaphragm foam pump further includes an electric motor and a motor- driven element associated with said electric motor. Actuating the electric motor drives the motor driven element to repeatedly collapse and expand the diaphragm, and where expansion of the diaphragm creates a vacuum causing foamable liquid and air to flow into the mixing chamber, and collapsing of the diaphragm causes the liquid and air mixture to be forced out through the outlet passageway as foam.

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