FOAM CARTRIDGES, PUMPS, REFILL UNITS AND FOAM DISPENSERS UTILIZING THE SAME
First Claim
1. A foam cartridge for a foam pump comprising:
- a housing;
the housing having an upper cylindrical portion and a lower cylindrical portion;
one or more air passageways through the upper cylindrical portion; and
an interior cylindrical member having a closed top;
the interior cylindrical member is located at least partially within the upper cylindrical portion of the housing;
one or more mixing passages located between the interior cylindrical member and the upper cylindrical portion of the housing; and
one or more mix media located at least partially within the lower cylindrical portion of the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
Exemplary embodiments of foam cartridges, refill units for foam dispensers, and foam dispensers are disclosed herein. An exemplary foam cartridge for a foam pump that may be used in a refill unit includes a housing. The housing includes an upper cylindrical portion and a lower cylindrical portion. One or more air passageways are located through the upper cylindrical portion. The foam cartridge includes an interior cylindrical member having a dome. The interior cylindrical member is located at least partially within the upper cylindrical portion of the housing. One or more mixing passages located between the interior cylindrical member and the upper cylindrical portion of the housing, and one or more mix media are located at least partially within the lower cylindrical portion of the housing.
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Citations
21 Claims
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1. A foam cartridge for a foam pump comprising:
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a housing; the housing having an upper cylindrical portion and a lower cylindrical portion; one or more air passageways through the upper cylindrical portion; and an interior cylindrical member having a closed top; the interior cylindrical member is located at least partially within the upper cylindrical portion of the housing; one or more mixing passages located between the interior cylindrical member and the upper cylindrical portion of the housing; and one or more mix media located at least partially within the lower cylindrical portion of the housing. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9)
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5. The foam cartridge of claim Error! Reference source not found, wherein at least one air passage has an inward tapered shape.
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10. A refill unit comprising:
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a container; a foamable liquid in the container; a liquid pump in fluid communication with the container; an air inlet for receiving pressurized air; a foam cartridge located downstream of the liquid pump and in fluid communication with the air inlet; the foam cartridge having a cylindrical outer housing; a cylindrical interior member; the cylindrical interior member having a closed upper portion; one or more liquid inlets located proximate the closed upper portion to allow liquid to flow around the cylindrical interior member; a mixing passage located between the cylindrical outer housing and the cylindrical interior member; and one or more air passages through the cylindrical outer housing into the mixing passage. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A refill unit comprising:
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a container of foamable liquid; an outlet nozzle; a liquid pump having a liquid outlet; an air inlet for receiving pressurized air; a foam cartridge; the foam cartridge having a cylindrical outer housing and a cylindrical interior member; a mixing passage located at least partially between the cylindrical outer housing and the cylindrical interior member; an air chamber about the exterior of the cylindrical outer housing; one or more air passages extending through the cylindrical outer housing to the mixing passage between the cylindrical outer housing and the cylindrical interior member; wherein liquid and air meet in the mixing passage; and wherein the mixing passage opens to a mixing area having a cross-sectional area that is greater than the cross-sectional area of the mixing passage. - View Dependent Claims (19, 20, 21)
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Specification