Device for dispensing an air-liquid mixture, in particular foam, and operating unit intended therefor

摘要: Device for dispensing an air-liquid mixture, such as foam, comprising a liquid container and operating unit (1), which comprises at least concentric air pump (2) (3), each comprise piston chamber (4, 9) with (5, 10) is displaceable therein inlet discharge, component (11) the two pumps (2, 3), integral (10) outflow channel (15) opening, while shut-off means, make it possible to suck up or liquid, respectively, dispense them, are present in discharge of double-acting device can be operated actively by shuts off both therefrom, (5) moved freely over small distance respect (11).