Patent ID: 8414944

Claim:
Machine for infusion preparation comprising: at least one boiler; at least one cylinder; at least one brewing piston having a relative motion as to the cylinder and comprising at least one first gasket and at least one second gasket, said second gasket being located at a predetermined distance from the at least one first gasket, said piston being arranged to receive from the boiler a liquid for infusion preparation; said piston further comprising: at least one first conduit connected to a brewing head for injecting the liquid through the brewing head for infusion preparation; and at least one second conduit arranged to receive the liquid from the boiler and connected to a lateral surface of said piston between the at least one first gasket and the at least one second gasket so as to inject the liquid between the at least one first gasket and the at least one second gasket during infusion preparation; wherein the boiler is connected to the piston through a main conduit that divides into said at least one first conduit and into said at least one second conduit; and wherein said machine is configured for positioning said piston in at least two positions: a first position or resting position wherein said at least one second gasket is held outside the cylinder and said at least one first gasket is held inside the cylinder; and a second position or infusion position wherein both said at least one second gasket and said at least one first gasket are held inside the cylinder.