US 5,156,307 AGranted

Dispenser for foaming of a filled liquid material

OwnerGeorge E. Callahan, Harald Kochinventors

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Abstract

The dispenser has a circular mixing chamber (8) which is arranged immediately in front of a mixing nozzle (7). A first channel (15) leads to the mixing chamber (8) which is connected with a rising pipe which is immersed in the filled material of a squeezable container. Simultaneously, a second channel (9) leads into the mixing chamber which is connected to the air space above the filled material. A sieve arranged in the outlet channel (19) at a distance after the mixing nozzle which completely covers the outlet channel under the effect of the pressure of the filled material flowing out when the container (1) is squeezed. With release of the container, the sieve partially releases the outlet channel under the suction effect of the air return flow. With that, the container is rapidly ready for a renewed press sequence.

Claims12

Dependent claims

Dispenser for foaming a liquid material, said dispenser comprising

a squeezable container (1) having an interior with an upper portion for containing a gas, and a lower portion for containing the liquid material,
a spray head (32) mounted on the container,
said spray head comprising a mixing nozzle (7) and an outlet channel (19) downstream of the mixing nozzle,
at least two fluid conduits, one connecting the nozzle to a rising tube extending into said lower container portion, and another connecting the nozzle to said upper container portion, and
a sieve (6) disposed in the outlet channel at a substantial distance downstream of the mixing nozzle (7), said sieve being hingedly connected to one side of the outlet channel, so as to be movable between a first position fully blocking the outlet channel, when the container is squeezed, and a second position at least partially unblocking the outlet channel when the container is released, to permit unimpeded return air flow.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/673,534Filed 22 Mar 1991
Priority: DE 400957424 Mar 1990
Granted: 20 Oct 1992
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B05B 11/0027
Components or details: means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
B05B 7/0031
With a compressed gas supply: with disturbing means promoting mixing, e.g. balls, crowns
B05B 7/0037
With disturbing means promoting mixing, e.g. balls, crowns: including sieves, porous members or the like
B05B 7/10
Spray pistols; Apparatus for discharge: producing a swirling discharge