foerfarande och anordning foer ransonering av viskosa koncentrater med foeraenderlig viskositet i exakta maengder med varierande volymer

摘要

A pump has a pumping chamber defined by a flexible or resilient cylindrical chamber wall 15, and non-return inlet and outlet valves 14, 25. Pumping is effected by aerial deformation of the pumping chamber, by electro-magnetic actuating means 5. The liquid to be dispensed, is stored in collapsible container 2. IMAGE