(57) A liquid soap dispensing system includes a closed soap reservoir having a manually
actuated pumping mechanism located below and in fluid communication with the reservoir.
The pumping mechanism basically comprises a cylindrical bowl having an open end defined
by a continuous side wall and a moveable, substantially rigid closed end that is attached
about its periphery to the bowl's side wall. The dispenser also includes a hand-pulled
lever having two moving ends that pivot around a pivot pin - one end extending outside
the dispenser for easy grasping thereof by the user with the other end being in sliding
contact with the outer surface of the bowl's rigid end. In operation, a discrete quantity
of liquid soap flows from the upper reservoir through a one-way valve and fills the
bowl's interior cavity. When the lever's grasping end is pulled, the lever's bulb-contacting
end pushes the bowl's rigid end up within the cross-section defined by the bowl's
side wall toward the bowl's open end and forces the soap contained therein out through
a discharge conduit and into the user's hand. When the lever is released, the bowl
expands and draws another discrete charge of soap from the upper reservoir.
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