Hand operated dispenser mixer pump for two components located over each other and accessed by coaxial pumping ducts with the length of the main duct setting the ratio of the mix

摘要

A hand operated piston type dispenser pump has a main component (3) in the bottom of the container and above a free moving piston (5) and a second component (4) above the main component. The hand operated pump (2) operates on two coaxial pumping ducts (7, 8) with the main duct telescopic (7) reaching into the main component. The length and position of the main duct determines the ratio of the mix enabling the manufacturer to use similar packaging for a range of dual mix products. Slots (20, 22) in the ends of the telescopic duct ensure efficient dispensing right up to the empty position.