Patent ID: 9204767
Filing Date: 2015-12-08
Classification: A47K,B05B,B65D

Abstract:
1. A refill unit for a dispenser comprising: a container for holding a liquid; the container having a neck; a cap secured to the neck; a piston shaft having a piston; a pump chamber located at least partially within the neck; the piston movable at least partially within the pump chamber; an aperture in the cap wherein the piston shaft extends through the aperture; and a seal for creating a liquid-tight seal between the piston shaft and the cap; the piston movable within the container between a first position sealing off the pump chamber from the container and a second position opening a passage between the container and the pump chamber to allow liquid to flow into the pump chamber; the pump chamber having an outlet through the cap; and an outlet valve in the cap;