Patent ID: 9089860
Filing Date: 2015-07-28
Classification: A47K,B05B

Abstract:
1. A disposable refill unit for a dispenser having a permanent air compressor residing therein, the disposable refill unit comprising: a container containing a foamable liquid; a liquid pump secured to the container; a chamber in the liquid pump for receiving liquid and compressed air; a liquid passage from the container to the chamber; a one-way air inlet member for allowing air into the chamber and preventing liquid from exiting the chamber past the one-way air inlet member; an air passage located upstream of the one-way air inlet member; wherein at least a portion of the air passage has an annular shape; the air passage in fluid communication with an air compressor and configured to pass compressed air from an air compressor to the chamber when the refill unit is installed in a dispenser and the air passage is not in fluid communication with an air compressor when the refill unit is not installed in the dispenser; and one or more sealing members forming a seal between an air compressor and the air passage when the refill unit is installed in a dispenser.