EXACT DOSE DISPENSER DEVICE ASSEMBLY

摘要

This invention is a dosage dispenser assembly for containers to dispense liquids in the containers. The assembly includes an elongated hollow barrel (1), and means for removably mounting the barrel over the discharge opening in the container (9) so that the port in the barrel in the seated position is disposed adjacent the bottom of the container (9). A stop sleeve of generall y tubular configuration engages internally of the barrel, and has at least two key ways of different axial depth defining cam follower surfaces. A plunger (5) engages in the barrel having a lug element (6), and is rotatable relativ e to the stop sleeve between a position wherein the plunger tip is fully seate d in the barrel and another position wherein the plunger may be activated axially to draw a predetermined dosage of liquid contents into the barrel.