Patent ID: 8167171

Claim:
A device for containing fluid substances under airtight conditions and dispensing them, comprising: a rigid container having a neck defining an aperture providing access to a container cavity, a manually operable pump having a body, a ring cap, and a dip tube, a bag made of thermoplastic material housed in the container and itself having a neck from which there radially extends a flange which rests on the free edge of the neck of the container and defines a hole for providing access to the cavity of the bag and for housing the body of the manually operable pump for withdrawing fluid substance from the bag and feeding it to the outside through the pump dispensing stem, the body of the pump being pressed to form a seal on said flange of the bag by the ring cap presenting elements for engaging corresponding elements provided on the neck of the container, passages being provided for air entry from the outside of the container into the space existing between the inner surface of the container and the outer surface of the bag housed therein, wherein at least a portion of said bag flange projects radially beyond the outer lateral surface of the neck of the container at least in proximity to the free edge of the neck, from the inner surface of said ring cap there extending at least one profiled element which is positioned beyond the free edge of said bag flange, to retain the flange when the device is in its use position and to rest on that surface of said flange facing the container, to interfere with said flange surface and cause the bag to be extracted from the container together with the pump when the ring cap is disconnected and removed from the container when the bag assumes a squashed form against and towards the pump dip tube after the fluid substance has already been totally dispensed by the pump, wherein said passages for air entry from the outside of the container into the space existing between the inner surface of the container and the outer surface of the bag housed therein consist of recesses provided in the outer surface of the bag neck and in the lower surface of the radial edge projecting therefrom, said recesses being bounded by longitudinal ribs projecting from the outer surface of the neck of the bag and respectively by ribs projecting radially from the surface of the bag flange.