Patent ID: 7666826

Claim:
A foam dispenser comprising: (a) a container comprising a cleaning composition, wherein the cleaning composition comprises about 0.01 wt. % to about 10 wt. % total amount of surfactant, at least about 80 wt. % water, and glycol ether solvent consisting of one or more glycol ethers each having a HLB value of at least about 6.9 and an OHLB value of between about 12 and about 20, wherein the weight ratio of the foam-boosting solvent to the total amount of surfactant is at least about 1:100 and wherein the cleaning composition is substantially free of propellant; and (b) a mechanical foaming head comprising: (i) an air and liquid mixing chamber; (ii) an air inlet for delivering air to the air and liquid mixing chamber; (iii) a liquid inlet line for delivering the cleaning composition from the container to the air and liquid mixing chamber; and (iv) an outlet line for delivering a mixture of air and cleaning composition from the air and liquid mixing chamber outside of the mechanical foaming head, wherein the mixture includes at least 50% foam.