Foam generating and dispensing device

Details Foam generating and dispensing device Foam generating and dispensing device

1975-06-06

1976-08-10

Knowles, Allen N.

Dispensing

With material treatment or conditioning means

222479, B67D 558, B67D 300

Patent

active

039737012

ABSTRACT:
A foam producing and dispensing device for use with a deformable bottle containing foamable liquid and air, the device including cap means adapted to be fixed to the bottle mouth and defining a discharge passage in communicating relation therewith, a mixing chamber with an inlet at its lower end in communication with a dip tube depending below the level of foamable liquid in the bottle, air inlet passage elevated above the level of liquid in the bottle, a check valve in the mixing chamber inlet, a foam homogenizing element in the outlet of the mixing chamber and means providing for a one-way return air inlet to the bottle after collapse thereof to force the foamable liquid and air into the mixing chamber and deliver foam from the discharge passage. The one-way valve control for the air return inlet passages is in the form of a simple elastomeric washer press fit over the exterior of the mixing chamber.

REFERENCES:
patent: 2752199 (1956-06-01), Newell, Jr.
patent: 3428222 (1969-02-01), Wright
patent: 3474936 (1969-10-01), McDonnell
patent: 3622049 (1971-11-01), Thompson
patent: 3709437 (1973-01-01), Wright

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