Device for the pressurized dispensing of a product, especially a

Dispensing – Collapsible wall-type container – With casing or support

Patent

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Details

222107, 222131, 2224021, 222394, B65D 8362

Patent

active

052773361

ABSTRACT:
The device comprises a container (3) provided in its upper part with an opening (4) fitted with a distribution valve (11), and a flexible pouch (9) disposed in the interior of the said container (3) in order to form a partition between the product (2) to be dispensed and a propellant (14) capable of maintaining a sufficient internal pressure for dispensing the product. The active product (2) to be dispensed is situated in the interior of the flexible pouch (9) and the valve (11) does not have a dip tube. A quantity of propellant (14) is introduced into the volume (10) of the container (3) situated around the flexible pouch (9). The flexible pouch (9) is made of a membrane which is sufficiently permeable to allow for the maintenance of an equilibrium of the gaseous pressure of the propellant (14) between the volume (10) exterior to the pouch (9) and the interior of this pouch (9).

REFERENCES:
patent: 3342377 (1967-09-01), Peredy
patent: 3378169 (1968-04-01), Clark
patent: 3662926 (1972-05-01), Umstead
patent: 4117951 (1977-04-01), Winckler
patent: 4150522 (1979-04-01), Burger
patent: 4189069 (1980-02-01), Stoody

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