SIMPLIFIED LIQUID OUTLET VALVES, PUMPS AND REFILL UNITS

摘要

An inverted refill unit for a dispenser is provided. The refill unit includes a liquid outlet valve in the form of an elastomeric member including a cylindrical side wall, an upper wall having an opening therein, and a valve member extending upwardly from the upper wall to selectively engage a valve seat.

主权项

1. An inverted refill unit for a dispenser comprising:
a liquid container; a pump housing secured to a bottom of the container and forming a liquid pump chamber, with a liquid inlet valve disposed in a liquid path between the liquid container and the liquid pump chamber, and the pump housing further comprises a liquid outlet passage extending from the liquid pump chamber to an annular projection extending away from the liquid pump chamber; a liquid outlet valve comprising an elastomeric member including a cylindrical side wall, an upper wall having an opening therein, and a valve member extending upwardly from the upper wall to engage the annular projection in a closed position and disengage the annular projection in an open position; and a liquid outlet disposed downstream of the liquid outlet valve.