Pull actuated foam pump

Details Pull actuated foam pump Pull actuated foam pump

B - Operations, Transporting

05

B

B05B 9/03 (2006.01) B67D 99/00 (2010.01) A47K 5/12 (2006.01) A47K 5/14 (2006.01) B05B 7/26 (2006.01) B05B 11/02 (2006.01)

Patent

CA 2667158

A foam dispenser includes a refill unit and a dispenser housing. The refill unit carries foamable liquid and provides a liquid pump portion actuated to advance foamable liquid through the dispenser. The dispenser housing provides an air pump portion actuated to advance air through the dispenser. The air pump portion communicates with the liquid pump portion when the refill unit is properly placed in the housing. The liquid pump portion includes a piston housing that reciprocally receives a piston assembly to define a collapsible liquid chamber. Similarly, the air pump portion includes a piston housing that reciprocally receives a piston assembly to define a collapsible air chamber. Upon actuation of the dispenser, both the liquid chamber and the air chamber collapse and thereby feed air and liquid to an extrusion chamber, and extrude the mixture of air and liquid therein through a premix chamber and at least one mesh screen. The pump is actuated my pulling the piston assembly away from the piston housing, and this is particularly advantageous in the art of wall-mounted dispensers employing push bars typically moved horizontally toward a foam pump to actuate the same.

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