Patent ID: 7257999

Claim:
A liquid dispenser comprising a sprayer device and a volume meter connected together to form an integral unit that prevents the sprayer device and volume meter from being disconnected without damaging the dispenser, said volume meter having an inlet end portion and a gauge member downstream of the inlet end portion that responds to liquid flowing through the dispenser to provide a visual readout indicating the volume of said liquid flowing through the dispenser, a common passageway extending through the sprayer device and the volume meter through which liquid flows from the inlet end portion of the volume meter, past the gauge member, and exits the sprayer device at a head end thereof, said sprayer device and volume meter each including a plastic body portion forming at least in part the common passageway and said plastic body portions being sonically welded together to connected the sprayer device and volume meter to form said integral unit, said passageway being substantially linear and having a predetermined cross-sectional area, and a grid member along the passageway downstream of the inlet end portion of the volume meter, said grid member having an open area comprising from 50 to 80 percent of the cross-sectional area of the passageway and comprising a plurality of substantially flat and substantially straight arms at substantially right angles to each other to form substantially rectangular openings.