Patent ID: 7237728

Claim:
A hand-held dispenser apparatus for controlling the flow rate of water therethrough and for controlling the metering of a liquid chemical into the water passing through the apparatus, comprising: a body member; said body member including a generally horizontally disposed first body portion having opposite sides, an inlet end, a discharge end, and a first fluid passageway extending between said inlet and discharge ends; said first body portion having a transversely extending spool opening formed therein which extends between said opposite sides thereof and which communicates with said first fluid passageway; said first fluid passageway including a venturi which is positioned upstream of said spool opening; said inlet end of said first body portion adapted to be secured to a source of water under pressure; said body member also including a generally vertically extending second body portion having upper and lower ends with a second fluid passageway, having upper and lower ends, extending therethrough; said upper end of said second fluid passageway being in communication with said first fluid passageway downstream of said venturi; said lower end of said second fluid passageway being in communication with a source of liquid chemical; said first body portion including an on/off valve in said first fluid passageway upstream of said venturi; an elongated spool member selectively slidably movably mounted in said transversely extending spool opening which is selectively slidably movable between at least first and second positions relative to said first body portion; said spool member having an upstream side, a downstream side, an upper end and a lower end; said spool member having at least first and second horizontally spaced-apart and horizontally disposed water flow passageways formed therein which extend between said upstream side and said downstream side; said spool member having at least first and second horizontally spaced-apart and vertically disposed chemical flow passageways formed therein which extend from its said lower end to said first and second water flow passageways, respectively; said first and second water flow passageways having different diameters; said first and second chemical flow passageways having different diameters; said first water flow passageway and first chemical flow passageway being in communication with said first fluid passageway when said spool member is in its said first position; said second water flow passageway and said second chemical flow passageway being in communication with said first fluid passageway when said spool member is in its said second position; said first chemical flow passageway being in communication with said second fluid passageway when said spool member is in its said first position; said second chemical flow passageway being in communication with said second passageway when said spool member is in its said second position.