Patent ID: 8210400

Claim:
A vertically movable valve for use with a pressurized product dispensing container wherein the valve is movable between an upper closed state and a depressed dispensing state, the valve having a valve stem with an axis and a button at its base, at least one dispensing opening in the lower zone of the valve stem and a resilient annular sealing grommet around the stem, comprising: an annular boot portion at the upper end of the grommet, said boot having an annular foot at the upper end of said boot and an annular leg portion extending downwardly from said boot, a shoulder on said valve stem, said foot having an upper surface engaging said shoulder to provide a restoring force when said valve is depressed, a lower zone of the sealing grommet having an interference fit relationship with the valve stem at the dispensing opening, a recess in the base of the grommet to accept the button of the stem, said recess being deep enough so that said button is within said recess when the valve is in its fully open state, at least one recess in the edge of said button to provide product passageway for product when the valve is open, the vertical distance between said stem shoulder and the stem button is less than the vertical distance between said upper surface of said grommet foot and said surface of said grommet base recess that engages said button.