Abstract: An espresso coffee machine wherein a conveyor disk, having a number of seats, each for receiving a respective wafer, is rotated in steps about an axis to successively feed the seats through a loading station for loading the wafers, an unloading station for unloading the used wafers, and a work station where each seat is interposed between a hot-water boiler and an outlet element for a coffee beverage, and is engaged by the boiler by virtue of pressurized cold water supplied to the boiler.

Abstract: An espresso coffee machine wherein a percolator cup is fitted removably to a fixed tubular support and beneath a pressurized-hot-water supply conduit; the fixed tubular support housing a sealing element which is movable by the pressurized hot water towards the cup for connecting the conduit to the cup in fluidtight manner.

Abstract: A percolator cup for espresso coffee machines, wherein a cup-shaped casing defines a compartment for ground coffee, and an outlet separated from the compartment by a calibrated valve element which only connects the compartment to the outlet when the pressure inside the compartment exceeds a given value.

Abstract: Coffee machine on which a boiler, heated by an electric heating source, is connected by a top and bottom pipe respectively to two inlets on a distribution chamber, the latter having an exhaust outlet, a water outlet connected to a ground coffee filtering cup, and a steam outlet. A selecting device is mounted in mobile manner inside the said distribution chamber for enabling selective communication between the water and exhaust outlets, while at the same time disabling the said heating source, between the bottom pipe and the water outlet, and between the top pipe and the steam outlet.