Patent ID: 6082586
Filing Date: 2000-07-04
Classification: A47K,B05B

Abstract:
A device for producing and dispensing foam, comprising:a) a collapsible container having an interior and a throat; andb) pump means attached to said container, the pump means including opposing first and second enclosure members, the first enclosure member being sealed in said throat with an air-tight seal, the second enclosure member having a flexible seal angled outwardly therefrom toward and engaging the first enclosure member, the second enclosure member being mounted within said first enclosure member and telescopingly movable with respect thereto, the first and second enclosure members cooperating to define an air chamber therebetween, the flexible seal providing a friction fit and an air seal between the first and second enclosure members to thereby facilitate pressurizing the air chamber as the second enclosure member is urged toward the first enclosure member, the air chamber being in communication with a mixing chamber, a fluid flow passageway having a fluid inlet in flow communication with the interior of the container, the fluid inlet including a fluid inlet valve for admitting liquid into said flow passageway from the interior of the container, a fluid outlet valve in the flow passageway for controlling flow of liquid from the flow passageway into the mixing chamber, an outlet passageway communicating with the mixing chamber, and a porous member located downstream from the fluid outlet valve and the mixing chamber for foaming air and liquid mixed in the mixing chamber and passing through the porous member, whereby moving the second enclosure member towards the first enclosure member reduces a volume of the air chamber and a volume of the flow passsageway and pressurizes air in the air chamber and liquid in the flow passageway and forces commingled air and liquid through the porous member to form a foam expelled through the outlet passageway.