Air foaming pump trigger sprayer

Details Air foaming pump trigger sprayer Air foaming pump trigger sprayer

2011-06-28

2011-06-28

Nicolas, Frederick C. (Department: 3754)

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

C222S481500, C239S333000

Reexamination Certificate

active

07967171

ABSTRACT:
A manually operated liquid foaming dispenser is attached to the top of a container of liquid and is manually reciprocated to dispense the liquid from the container as a foam. The dispenser includes a liquid pump chamber and an air pump chamber that respectively pump liquid and air under pressure to a discharge passage of the pump where the liquid and air are mixed, generating the foam dispensed from the dispenser. The air pump chamber has a tube valve controlling the discharge of air from the air pump to the discharge passage, and the air pump chamber is charged with air by opening the air pump chamber to the exterior environment of the dispenser.

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patent: 0706830 (1996-04-01), None
patent: WO2004054723 (2004-07-01), None

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