Compact automatic coffee-making machine more particularly for domestic use

An automatic coffee-making machine, comprising:

• a base;
• a filter carrier formed with an internal cavity and mounted on said base;
• a movable filter disposed at a lower end of said cavity for filtering a coffee infusion;
• means on said base for introducing powdered coffee into said cavity;
• a movable piston introducible into said cavity and forming a watertight seal therewith, said piston provided with means for delivering into said cavity pressurized hot water supplied by a metering unit on said base;
• a geared motor mounted on said base;
• at least one cam disc rotatably driven by said motor;
• resilient pulling means connected between said cam disc and said piston for drawing said piston into said cavity and compressing said powdered coffee;
• a rod connected between said cam disc and said piston for displacing said piston out of said cavity;
• guide means on said base for supporting and guiding said piston in the movement thereof, said guide means providing an irreversible transmission of the movement from said motor to said piston;
• and
• expelling means on said base for automatically removing from said cavity said powdered coffee when spent.