Apparatus and method for inserting an additive liquid into a flowing fluid and discharging the resultant mixture

Abstract From the Canadian patent

A dispensing assembly for discharging a flowing fluid into which a desired amount of an additive liquid has been inserted includes a container for the additive liquid which may be removed from a dispenser body. The container is normally positively biased to a closed condition to prevent escape of the additive liquid. Opening of the container is achieved through an interconnection with the dispenser body opening of the container being effected upon establishment of a predetermined minimum pressure by the flowing fluid in the dispenser body. Additive liquid is forced from the container into the flowing fluid by a metered amount of flowing fluid inserted into the container to cause a flexible …