Foam production device
OwnerFrancis Poizotinventor
Life of this patent
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Abstract
A foam producing device is disclosed which can be fitted to the liquid duct (3) of a liquid dispenser appliance, comprising at least one chamber (4) whose cross section is preferably greater than that of the liquid duct and which is placed in the duct and is divided into compartments (5, 6, 7) by at least one dividing wall (8) which is porous or has fine perforations, the chamber being in communication (9) with the atmospheric air on an air source.
Claims38
Device for the formation of foam, said device comprising:
- a container having a hollow space for holding a foamable liquid;
- a foam outlet coupled to said container through which foam formed in said container is discharged;
- a duct located in said container and extending from said hollow space to said foam outlet, said duct defining a liquid flow path through which said liquid travels from said hollow space to said foam outlet;
- a foam forming chamber located in said duct and including upstream and downstream thin porous walls which are spaced apart from one another to define said foam forming chamber, each of said porous walls having a plurality of small porous openings formed therein;
- means for introducing gas into said form forming chamber and simultaneously causing said foamable liquid to enter said chamber through said upstream wall, said porous openings in said porous wall agitating said foamable liquid as it passes through said upstream wall, said agitated liquid combining with said gas to create a liquid foam in said chamber.
Device according to claim 16, wherein said foam outlet is removably coupled to said container.
Device according to claim 16, wherein said openings in said upstream porous wall define the sole path for said foamable liquid to travel through said duct from a position upstream of said upstream wall into said foam forming chamber.
A device for the formation of foam, said device comprising:
- a container having a hollow space for holding a foam forming liquid;
- a foam outlet coupled to said container through which foam formed in said container is discharged;
- a duct located in said container and extending from said hollow space to said foam outlet, said duct defining a liquid flow path through which said liquid travels from said hollow space to said foam outlet;
- a plurality of foam forming chambers located in said duct, each of said chambers including upstream and downstream thin porous walls which are spaced apart from one another to define said foam forming chambers, each of said porous walls having a plurality of small porous openings formed therein;
- means for introducing gas into said foam forming chambers and simultaneously causing said foamable liquid to enter each of said chambers through its respective said upstream wall, said porous openings in said respective upstream walls agitating said foamable liquid as it passes through said respective upstream walls, said agitated liquid combined with said gas to create liquid foam in said chambers.
Dependencies are inferred from the claim text.