Fluid Dispenser Having a Housing and Flexible Inner Bladder

摘要

Abstract A dispenser (10) for dispensing a fluid includes a rigid vial (52) that has a main fluid chamber (55) containing a fluid, and a pump assembly (50) that is in fluid communication with the main fluid chamber (55) and is configured to dispense a 5 predetermined quantity of fluid from the main fluid chamber (55). A flexible bladder (54) is provided which is located within the main fluid chamber (55) and is configured to expand to fill the ullage created within the main fluid chamber (55) during dispensing of fluid by the pump assembly (55). The resilient bladder (54) tends to force itself outwardly toward the rigid vial (52) and, in turn, increases the 10 pressure within the main fluid chamber (55) in comparison to the interior of the bladder to thereby prevent the ingress of air or vapors through the bladder (54) or otherwise into the main fluid chamber (55). NJ- C"l w C14 00 127= lz "'Oo m DO C4 C14 C14 cn Clq C> oo 00 00 V-) I tr) C)o tn C) cq %D C/ C14 C-f) C4 ,O Cn CrN C> In