초록 ▼

An espresso machine wherein a steam supplying first conduit is separably coupled to a second conduit having an air admitting inlet and an air discharging outlet. When the first conduit admits steam into the second conduit between the inlet and the outlet, such steam draws atmospheric air by way of t

An espresso machine wherein a steam supplying first conduit is separably coupled to a second conduit having an air admitting inlet and an air discharging outlet. When the first conduit admits steam into the second conduit between the inlet and the outlet, such steam draws atmospheric air by way of the inlet and the resulting steam-air mixture is discharged by way of the outlet to frothe milk in a vessel into which the outlet of the second conduit extends. The rate of admission of air into the inlet of the second conduit is regulated by a valving element which is mounted on the second conduit and can be rotated by a handle so as to move a hole of the valving element relative to the inlet and to thus alter the cross-sectional area of the path for the flow of air into the second conduit. If the inlet of the second conduit is completely sealed from the atmosphere, the outlet discharges only steam which can be used to heat cups prior to pouring of espresso coffee.

대표청구항 ▼

An expresso machine comprising a source of steam; steam supplying first conduit means having at least one steam discharging orifice; air supplying second conduit means having at least one air-admitting inlet and at least one air-discharging outlet adjacent said orifice so that steam which issues fro

An expresso machine comprising a source of steam; steam supplying first conduit means having at least one steam discharging orifice; air supplying second conduit means having at least one air-admitting inlet and at least one air-discharging outlet adjacent said orifice so that steam which issues from said orifice draws air from said second conduit means by way of said outlet; and means for regulating the flow of air into said second conduit means by way of said inlet, said regulating means comprising a valving element movable with reference to said second conduit means between a plurality of positions in each of which said inlet communicates with the surrounding atmosphere to a different extent.