<p>#CMT# #/CMT# The brewing unit has an axially adjustable piston which is moved in brewing position of filling opening (3). A closing plate (5) is provided in end of cylinder (2). A gear wheel (9) is rotatably mounted on closed chamber (8). The gear wheel and connecting rods (16) are eccentrically hinged with respect to articulation points (15). The ends of the closure flap are hinged at the articulation points (18). The articulation points (15,18) and axes of rotation (10) of gear wheel are set in straight line which is parallel to the longitudinal center axis of the cylinder. #CMT#USE : #/CMT# Brewing unit for coffee machine used for preparing espresso coffee. #CMT#ADVANTAGE : #/CMT# The contamination of the coffee can be prevented. The wear-resistance of the drive unit of the closure plate can be improved. The reliability of the brewing unit can be improved. The structure of the brewing unit can be simplified. The brewing unit can be assembled and constructed easily. The performance of the brewing unit can be enhanced. The coffee can be prepared easily. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawings show the perspective and side views of the brewing unit and closing plate. 2 : Cylinder 3 : Filling opening 5 : Closing plate 8 : Closed chamber 9 : Gear wheel 10 : Axes of rotation 15,18 : Articulation points 16 : Connecting rods.</p>
