AIR-ACTIVATED SEQUENCED VALVE SPLIT FOAM PUMP
First Claim
Patent Images
1. A refill unit for refilling a foam dispenser system, the refill unit comprising:
- a container for holding a supply of foamable liquid; and
a pump housing connected to the container, the pump housing comprisinga first connection for connecting to a first air pump, wherein the first air pump supplies a first source of air pressure to move the foamable liquid into a mixing chamber,a first member for preventing liquid from flowing through the first connection into the first air pump; and
a second connection for connecting to a second air pump, wherein the second air pump supplies a second source of air pressure to mix air with the liquid in the mixing chamber and create a foamy air-liquid mixture.
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Accused Products
Abstract
Foam dispenser systems and pumps for use in foam dispenser systems are disclosed herein. A refill unit for refilling a foam dispenser system comprises a container for holding a supply of foamable liquid and a pump housing connected to the container. The pump housing comprises one or more connections for connecting to one or more external air pumps, wherein the air pumps supply air pressure to move the foamable liquid into a mixing chamber and to mix air with the liquid in the mixing chamber and create a foamy air-liquid mixture.
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Citations
20 Claims
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1. A refill unit for refilling a foam dispenser system, the refill unit comprising:
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a container for holding a supply of foamable liquid; and a pump housing connected to the container, the pump housing comprising a first connection for connecting to a first air pump, wherein the first air pump supplies a first source of air pressure to move the foamable liquid into a mixing chamber, a first member for preventing liquid from flowing through the first connection into the first air pump; and a second connection for connecting to a second air pump, wherein the second air pump supplies a second source of air pressure to mix air with the liquid in the mixing chamber and create a foamy air-liquid mixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A foam pump comprising:
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a housing having a first connection port for connecting to a first air source; a second connection port for connecting to a second air source; a charging chamber having a liquid inlet for allowing liquid to enter the charging chamber; a sealing valve to seal the liquid inlet and prevent liquid from exiting the housing through the liquid inlet; a liquid passage between the charging chamber and a mixing chamber; an air passage from the second air inlet to the mixing chamber; and a foam outlet located downstream of the mixing chamber; wherein air flowing through the first connection port causes liquid to flow from the charging chamber through the liquid passage to the mixing chamber; and wherein air flowing through the second connection port flows through the air passage to the mixing chamber wherein the air mixes with the liquid and forces the mixture out of the foam outlet. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A refill unit for a foam dispenser comprising:
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a container; a pump housing having a connector for connecting to the container; a pump housing having a first connection port for connecting to a first air source; a second connection port for connecting to a second air source; a charging chamber having a liquid inlet for allowing liquid to enter the charging chamber; a sealing valve to seal the liquid inlet and prevent liquid from exiting the housing through the liquid inlet; a liquid passage between the charging chamber and a mixing chamber; an air passage from the second air inlet to the mixing chamber; and a foam outlet located downstream of the mixing chamber; wherein air flowing through the first connection port causes liquid to flow from the charging chamber through the liquid passage to the mixing chamber; and wherein air flowing through the second connection port flows through the air passage to the mixing chamber wherein the air mixes with the liquid and forces the mixture out of the foam outlet.
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Specification