WIPER FOAM PUMP, REFILL UNIT & DISPENSER FOR SAME
First Claim
Patent Images
1. A foam dispenser comprising:
- a liquid container for holding a foamable liquid;
a flexible and resilient liquid delivery compressible member connecting the liquid container to a mixing chamber;
a flexible and resilient air delivery compressible member connecting a source of air to the mixing chamber, such that the foamable liquid mixes with air within the mixing chamber;
a foaming chamber fluidically connected to the mixing chamber;
a foam outlet located downstream of the foaming chamber; and
an actuator for a compression member;
wherein the compression member is configured to compress at least one of the compressible members to move liquid and air into the mixing chamber wherein the liquid and air form an initial mixture which is enhanced into a foam in the foaming chamber and passes out of the foam dispenser through the foam outlet.
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Abstract
Foam dispensers and pumps for use in foam dispensers are disclosed herein. In one embodiment, a foam dispenser system includes a liquid container for holding a foamable liquid. A flexible and resilient liquid delivery compressible member connects the liquid container to a mixing chamber. A flexible and resilient air delivery compressible member connects a source of air to the mixing chamber. A compression member compresses the compressible members to move liquid and air into the mixing chamber to become a foam. The liquid container and the liquid delivery compressible member may both be disposed in a removable and replaceable refill unit assembly.
76 Citations
20 Claims
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1. A foam dispenser comprising:
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a liquid container for holding a foamable liquid; a flexible and resilient liquid delivery compressible member connecting the liquid container to a mixing chamber; a flexible and resilient air delivery compressible member connecting a source of air to the mixing chamber, such that the foamable liquid mixes with air within the mixing chamber; a foaming chamber fluidically connected to the mixing chamber; a foam outlet located downstream of the foaming chamber; and an actuator for a compression member; wherein the compression member is configured to compress at least one of the compressible members to move liquid and air into the mixing chamber wherein the liquid and air form an initial mixture which is enhanced into a foam in the foaming chamber and passes out of the foam dispenser through the foam outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A removable and replaceable refill unit for a foam dispenser, wherein the foam dispenser includes a compression member configured to compress a flexible and resilient compressible portion of the refill unit, the refill unit comprising:
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a liquid container; a foamable liquid contained within the liquid container; and a liquid delivery member comprising a first end connected to the liquid container and a second end configured to connect to the foam dispenser; wherein the flexible and resilient compressible portion of the refill unit is disposed between the first end and the second end. - View Dependent Claims (17, 18, 19)
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20. A method for producing a removable and replaceable refill unit for a foam dispenser, wherein the foam dispenser includes a compression member configured to compress a flexible and resilient compressible portion of the refill unit, the method comprising:
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providing a liquid container for holding a supply of foamable liquid; connecting a liquid delivery member to the liquid container, wherein the liquid delivery member includes a flexible and resilient compressible portion; and filling the liquid container with a foamable liquid.
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Specification