Container for foamy liquid discharged in small amounts

Details Container for foamy liquid discharged in small amounts Container for foamy liquid discharged in small amounts

1989-02-17

1990-06-12

Huppert, Michael S.

Dispensing

With material treatment or conditioning means

222321, 239343, B05B 724

Patent

active

049325671

ABSTRACT:
A container in which air and a foamable liquid are passed through porous gas/liquid mixing members at which the foamable liquid and air are mixed together to be foamed so that the foam of the foaming liquid may be discharged from the container. The gas/liquid mixing members are porous films of which one is disposed at the bottom of a cylinder and at least two are disposed in a hollow piston inclusive of a hollow piston rod at predetermined spacing. A check valve is provided at the bottom of the cylinder. A liquid passage hole in communication with a downwardly extending liquid passage pipe is provided. A gas passage hole opens to a junction of the liquid passage pipe and liquid passage hole to form a gas/liquid mixing portion, and a second check valve is provided in the piston rod.

REFERENCES:
patent: 4274594 (1981-06-01), Ito
patent: 4432496 (1984-02-01), Ito
patent: 4615465 (1986-10-01), Grothoff
patent: 4836422 (1989-06-01), Rosenberg

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