A dosage device has a hollow barrel and a plunger slidable within the barrel, and a plurality of formations provided on the barrel and plunger and cooperating with one another to produce a sound signal and a pointed impulse, which corresponds to a predetermined dosage of fluid drawn into or displaced from the barrel. At least one of the barrel and plunger formations which are made of flexible material is configured to have a plurality of spaced-apart segments shaped and dimensioned to improve the quality of the sound signal.
申请公布号
WO2008016381(A1)
申请公布日期
2008.02.07
申请号
WO2006US62465
申请日期
2006.12.21
申请人
ALGEN & KLEMER LLC;KLEYMAN, GENNADY;MERSON, ALEXANDER