Centrifugal device for brewing coffee

A centrifugal device for brewing coffee, comprising:

• a spinning assembly which defines a brewing chamber into which ground coffee and hot water are supplied, the spinning assembly being constructed to rotate about a central axis, the spinning assembly comprising:
• a piston element comprising a bottom wall and a top wall part,
• a cylinder element comprising a peripheral wall which comprises a filter, wherein the cylinder element comprises an upper rim, and wherein the top wall part of the piston element is configured to engage the upper rim,
• wherein the peripheral wall and the bottom wall define the brewing chamber,
• a motor and a spindle connected to the motor, the spindle being coaxial with the central axis and comprising a helical cam track,
• wherein the piston element comprises a nut which runs along the helical cam track, wherein during a centrifugal rotation the piston element is in a coffee brewing position in which the top wall part of the piston element is pressed against the upper rim of the cylinder element by the helical cam track which acts on the nut, and wherein during said centrifugal rotation the piston element is rotated by the spindle via the action on the nut and is pressed against the upper rim, causing the cylinder element to be rotated together with the piston element, wherein a centrifugal force is created which forms a bed of coffee against the peripheral wall and which drives the hot water through the bed of coffee and through the filter,
• wherein the cylinder element is rotatable relative to the spindle when the piston element is not in the brewing position,
• wherein the centrifugal device further comprises a stopping device comprising:
• an engagement member and
• an actuator,
• the engagement member being movable by the actuator between an engaged position and a disengaged position, wherein in the engaged position the engagement member engages the piston element and stops the centrifugal rotation of said piston element, thereby causing the nut to travel along the helical cam track of the spindle when the spindle is rotated by the motor and causing the piston element to move upward or downward relative to the cylinder element between the coffee brewing position in which the coffee is brewed and a coffee ejecting position in which used ground coffee is ejected.