Patent ID: 7942093

Claim:
Automatic dispenser of beverages brewed starting from coffee powder or packaged capsules, in combination with a pressing plunger, comprising, inside a housing: an infusion group ( 1 ) comprising a brewing chamber ( 2 ) presenting a bottom and an opening ( 3 ) and being adapted to receive said pressing plunger ( 5 ), means for actuation ( 7 ) in a relative sliding movement of said pressing plunger ( 5 ) relative to said brewing chamber ( 2 ), starting from a rest position in which the plunger is outside the chamber to a work position inside the brewing chamber, and an ejector plate movably mounted in said brewing chamber ( 2 ), between the bottom and the opening ( 3 ) of the brewing chamber by means of a driving device; as well as a device ( 20 ) for ejection of discs of grounds or infused capsules, when said ejector plate is brought to the level of the opening ( 3 ) of the brewing chamber ( 2 ), comprising an ejector arm ( 21 ) driven in a reciprocating motion above the opening ( 3 ) of the brewing chamber, wherein the ejector arm ( 21 ) is mounted to rotate around a pivot axis ( 24 ) perpendicular to the plane of the opening ( 3 ) of the brewing chamber ( 2 ) and the ejector arm is entrained in its reciprocating motion by only one cam ( 30 ) fixed to, and movable with, the pressing plunger ( 5 ), wherein the cam comes to engage directly with a drive end ( 23 ) of the ejector arm and has a profile such that the cam ensures displacement of the ejector arm in two opposite directions, and wherein said bottom of said brewing chamber constitutes a support surface for ground coffee and said pressing plunger is operative to press the ground coffee against said support surface when in the work position, and wherein the pivot axis ( 24 ) of the ejector arm ( 21 ) is adjacent the drive end ( 23 ) of said arm ( 21 ), the cam ( 30 ) presents a guide path ( 32 ), and the guide path ( 32 ) is a rib on which moves a fork ( 26 ) forming the drive end of the ejector arm ( 21 ).