Abstract: A coffee machine (1) with a brewing apparatus (7) is described which has a brewing chamber (9) and a piston (37) being movable to and fro herein. One of the front sides of the brewing chamber (9) contains an opening (44) which is cleared by a closing element (8) in one of its positions (I) for apportioning coffee powder and is closed in another position (II). A stripper (48) is provided for stripping off and ejecting the used up coffee grounds. In order to constructionally simplify such a coffee machine and to make it operatively more reliable and more robust, it is suggested to move the closing element (8) only relative to the brewing chamber in a plane extending in parallel to the opening (44) and to couple the stripper (48) to the closing element (8) in its movement.

Abstract: A brewing means (1) for a coffee machine with a brewing chamber (3) is described, which is disposed in a housing (2) provided with an opening (9) on a front side. The opening (9) can be closed by means of a closing element (10) sealed against the opening. A hot water line (11) is furthermore provided, which supplies hot brewing water to the brewing chamber (3) under pressure and supports at the same time the sealing of the opening (9). In order to design such a brewing means (1) in such fashion that the service life of the seal (21) can be increased, it is suggested that the seal (21) comprises a flexible membrane disposed between a sealing chamber (22) connected to the hot water line (11) and a sealing seat (19), which can be arched and pressed against the sealing seat by means of the pressure.

Abstract: A coffee machine with a brewing apparatus is described which contains a brewing vessel disposed removably and insertably on a support by detachable fasteners. A piston driven by a motor via a piston rod and a gear pin is movable within the interior of the brewing vessel. In order to facilitate the removal and insertion of the brewing vessel in a given direction for cleaning purposes and to be able to also exchange the brewing vessel, if required, the piston is connected to the gear pin via a separable coupling, which can be separated or coupled by removal or insertion movement of the brewing vessel in the given direction so that the brewing vessel can be removed and inserted together with the piston as a unit.

Abstract: A coffee machine having a flow heater in the hot water line that effects additional heating of a residual amount of hot water left in the line after termination of the coffee-making process to convert it to steam and press out any water remaining in the used grounds to dry them for easy removal.