Cylindrical dispenser with plunger pump

摘要

The dispenser consists of a cylinder (1) with a movable base (2) at one end and a dispensing pump (5) which covers the other end and has a seal (4) with a surface matching that of the base (2). The seal (4) is in the form of a plunger which can be inserted through the neck of the cylinder, forming a sliding seal inside the cylinder once fitted. In a variant of the design the seal (4) can be made in one piece with a siphoning bell, and it is independent of a reducer ring (6) which fixes the dispensing pump sub-assembly to the neck of the cylinder.