Patent ID: 7198175

Claim:
A liquid dispenser comprising: a resilient, enclosed container enclosed but for having at one end of the container a neck open at a container outlet opening, a cap having an end wall and a side wall of extending upwardly from the end wall to a remote portion of the side wall, a cap outlet opening through the side wall, the cap received on the neck with the neck extending into the cap, the remote portion of the cap about the neck engaging the neck to form fluid impermeable seal therewith, a passageway defined between the neck and the side wall of the cap outwardly of the neck and inwardly of the side wall open to both the container outlet opening and the cap outlet opening, wherein when the container is in an inverted position with the neck located below the remainder of the container, the container outlet opening is at a height which is below a height of the cap outlet opening, the side wall of the cap being disposed about an axis, the container outlet opening disposed coaxially within the side wall of the cap, an impeller disposed in the cap above the end wall of the cap and at least partially below the container outlet opening journalled for rotation about the axis, the impeller adapted on rotation to receive fluid above the impeller from the container outlet opening and to direct liquid radially outwardly into the passageway such that rotation of the impeller forces fluid into the passageway raising the level of fluid in the passageway to a height above the height of the cap outlet opening such that fluid flows out of the cap outlet opening, the impeller when not rotating not preventing air flow from the cap outlet opening to the container outlet opening.