| 摘要 |
The dispenser has at least one pump (6) for dispensing successive batches through each operating stroke. Means are provided for switching the one operating stroke stepwise onto the next independently of the volume of each batch. A cylinder assembly (5) can be provided with at least one pump cylinder (7) free of intake openings wherein the cylinder forms with the pump piston (9) a pump chamber (12) which can connect only with one outlet opening (14) wherein the cylinder assembly forms basically the entire medium store of the dispenser. |
