Patent ID: 7156324

Claim:
A spraying device comprising: a cartridge containing a first liquid, the cartridge being removably connected to a sprayer body, the cartridge being oriented such that gravity exerts a downward force on the first liquid; the sprayer body comprising: a conduit for receiving a second liquid; a movable valve structure having first and second liquid passageways, the first passageway communicating with the first liquid from the cartridge and the second passageway communicating with the second liquid flowing from the conduit; a manual actuator positioned in operative relationship with the movable valve structure enabling movement of the valve structure between at least three discrete positions including: a) a first position enabling the second liquid to flow through the valve structure to create a reduced pressure in the valve structure which draws the first liquid out of the cartridge and into the valve structure whereby the first and the second liquids mix to form an outlet stream which flows through the valve structure; b) a second position enabling the second liquid only to flow through the valve structure and blocking the flow of the first liquid through the valve structure, and c) a third position blocking the first and the second liquids from flowing through the valve structure; and an orifice disposed in the spraying device for metering a predetermined amount of the first liquid from the cartridge into the valve structure when the valve structure is in the first position to achieve a predetermined ratio of the first liquid to the second liquid in the outlet stream; wherein the cartridge includes a secondary threaded closure.