| 摘要 |
A device for withdrawing and dispensing a viscous product without taking in air is described. The device on the one hand includes a pumping member positioned, by its base, at the open end of a rigid container associated with a retractable flexible inner pouch, intended to receive the product, and on the other hand a plunger tube connected by its upper end to a corresponding part of the pumping member, such that the upper end is partially submerged in the product and the free lower end is completely submerged in the product, such that the plunger tube is made up of a first upper part, with a closed circumference, defining a reference section of the tube and a second lower part submerging the first, with a circumference open by at least one longitudinal slot, made along a generatrix and defining a C- or U-shaped section on that part of the tube. |
