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Liquid-dispenser-for-dispensing-foam

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Liquid dispenser for dispensing foam

Details

Inventors: Banks, Stewart;
Assignee: Sprintvest Corporation NV (Curacao, AN)
Primary Examiner: Kashnikow; Andres
Assistant Examiner: Kaufman; Joseph A.
Attorney, Agent or Firm: Hill & Schumacher

There is disclosed a foaming device for dispensing foam. The device includes a collapsible liquid container and a foam pump attached to the container outlet. The foam pump includes two enclosures, the first being bonded in the throat of the container and the second being telescopingly received in the first. When assembled, the two enclosures define an air chamber and a fluid chamber each having outlets which merge by the foamer outlet. The fluid chamber accepts liquid from the container and when the second member is moved with respect to the first member the fluid chamber is pressurized to open an outlet valve and air is simultaneously expelled through the outlet. The liquid and air commingle as they pass through a wire, plastic or fabric mesh thereby forming the foam. There is included a dispenser housing for releasibly receiving the collapsible liquid container and foam pump. The dispenser includes a push button pivotally attached thereto which is coupled to the second enclosure so that as the push button is moved the pump is actuated.

DETAILED DESCRIPTION The present invention provides a device for producing and dispensing foam.
The device includes a container for storing a liquid in the interior thereof.
Included is a pump means which is attachable to the container.
The pump means includes an air chamber having an air inlet and an air outlet.
The pump means includes a fluid chamber provided with a fluid outlet positioned with respect to the air outlet so that liquid exiting the fluid outlet communicates with the air outlet.
The fluid chamber has a liquid inlet in flow communication with the container interior and further includes a liquid inlet valve.
The liquid inlet valve is movable between an open position to allow liquid from the container to enter the fluid chamber and a closed position.
The pump means includes a liquid outlet valve located in the fluid chamber spaced from the liquid inlet valve.
The liquid outlet valve is biased in the closed position.
The pump means includes a porous member for generating turbulence in fluid passing therethrough and is positioned to receive air and fluid from the air and fluid chamber outlets.
The pump means includes means for pressurizing the air chamber and the fluid chamber whereby when the fluid chamber is sufficiently pressurized the liquid inlet valve closes and the liquid outlet valve opens thereby forcing liquid through the fluid chamber outlet to commingle with air being simultaneously expelled through the air chamber outlet.
The resulting liquid-air mixture is forced through the porous member.
In another aspect of the invention there is provided a dispenser for producing and dispensing foam.
The dispenser includes a container for storing a liquid in the interior thereof.
The dispenser includes pump means attachable to the container.
The pump means includes an air chamber having an air inlet and air outlet.
The pump means includes a fluid chamber provided with a fluid outlet positioned with respect to the air outlet so that liquid exiting the fluid outlet communicates with the air outlet

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