Patent ID: 6526599
Filing Date: 2003-03-04
Classification: E03D

Abstract:
A passive dispenser for dosing and issuing a rationed amount of dispensable liquid into a cistern tank, from a volume of dispensable liquid stored in a container, the dispenser comprises:(a) a discharge spout adapted to be in fluid communication with said container; (b) a basin for receiving a rationed amount of dispensable liquid from said container, the basin comprises: a. a basin floor, disposed below said spout; b. upstanding basin walls extending upwardly from said basin floor, and extending above the discharge spout mouth; c. whereby, when the basin is suspended and below the level of dispensable liquid in said container, and a predetermined level of dispensable liquid is disposed in said basin, an airlock is formed, preventing further liquid from evacuating said container; (c) a siphon, comprising an inlet conduit having a siphon inlet disposed below said spout, and an outlet conduit having a siphon outlet disposed below said siphon inlet; said inlet conduit and outlet conduit being in fluid communication via a passage connecting therebetween, said passage disposed above the siphon inlet; (d) wherein said siphon inlet being in fluid communication with said rationed amount of dispensable liquid disposed in the basin so that a vacuum created in said outlet conduit will siphon dispensable liquid from said basin, to be dispensed into the cistern when the cistern water is being flushed.