DOSAGE DEVICE

摘要

A dosage device (10) has a hollow barrel (4) and a plunger (2) slidable within the barrel, and a plurality of formations (6, 6', 8, 12) provided on the barrel and plunger and cooperating with one another to produce a sound signal, which corresponds to a predetermined dosage of fluid drawn into or displaced from the barrel. At least one of the barrel (12) and plunger formations is configured to have a plurality of spaced-apart segments shaped and dimensioned to improve the quality of the sound signal.