Passive dispenser having a double air vent system
AssigneeThe Drackett Company
InventorGregory R. Jones
Life of this patent
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Abstract
The present invention provides a passive dispenser for use in a toilet tank in which the solution to be dispensed is isolated from the water in the toilet tank, the dispenser comprising a product chamber having a venting means and a refill/discharge pathway which are held in fluid communication by an inclined conduit. Hydrostatic head obtained by use of the venting conduit in conjunction with the inclined conduit is utilized to prevent the solution from flowing out of the product chamber during quiescent periods. Constriction means in the venting conduit are preferred to modify equilibrium hydraulic forces during the flush/refill cycles.
Claims11
A passive dosage dispenser for containing a quantity of a solution isolated from a body of liquid in which said dispenser is immersed and for causing a predetermined volume of said solution to issue from said dispenser in response to the level of said body of liquid being lowered from a first elevation to a second elevation, the dispenser comprising a product chamber having an air venting means, a refill/discharge pathway having an exit/inlet port at the bottom portion thereof, a venting conduit connected to the top of said pathway, and an inclined conduit having a first end and a second end, the first end being connected to said refill/discharge pathway and the second end being connected to said product chamber, said first end being disposed at a higher elevation than said second end.
Dependencies are inferred from the claim text.