Cartridge-operated coffee-machine

1. Coffee maker able to function with cartridges containing a beverage-producing product, comprising means for supplying hot water to an infusion head able to receive at least two cartridges ( 2 , 2 ′) of different diameters each having at least one flat seating surface, means for placing said means for supplying in communication with the product contained within the cartridges in order to obtain a beverage, as well as means permitting said beverage leaving the cartridge to be directed towards a beverage collecting container, where said infusion head has a support ( 11 ) having at least one hollow ( 29 ) forming a housing for at least two cartridges ( 2 , 2 ′) of different diameters, characterized in that said hollow ( 29 ) has a peripheral annular seat ( 35 ) common to several seating flange ( 6 , 6 ′) diameters of different cartridges, one or more parts of the external edge of said peripheral seat ( 35 ) forming a vertical wall for common indexing of said cartridges ( 2 , 2 ′), characterized in that one cartridge is indexed with respect to one of the vertical side walls ( 39 ) of said hollow.

2. Coffee maker according to claim 1 , characterized in that said support ( 11 ) is removably mounted in the infusion head.

3. Coffee maker according to claim 1 , characterized in that one cartridge is indexed with respect to at least two vertical walls of said hollow facing each other.

4. Coffee maker according to claim 1 , characterized in that said hollow ( 29 ) comprises at least one rib ( 41 ) for guiding said cartridges ( 2 , 2 ′) in the longitudinal and/or transverse direction.

5. Coffee maker able to function with cartridges containing a beverage-producing product, comprising means for supplying hot water to an infusion head able to receive at least two cartridges ( 2 , 2 ′) of different diameters each having at least one flat seating surface, means for placing said means for supplying in communication with the product contained within the cartridges in order to obtain a beverage, as well as means permitting said beverage leaving the cartridge to be directed towards a beverage collecting container, where said infusion head has a support ( 11 ) having at least one hollow ( 29 ) forming a housing for at least two cartridges ( 2 , 2 ′) of different diameters, characterized in that said hollow ( 29 ) has a peripheral annular seat ( 35 ) common to several seating flange ( 6 , 6 ′) diameters of different cartridges, one or more parts of the external edge of said peripheral seat ( 35 ) forming a vertical wall for common indexing of said cartridges ( 2 , 2 ′), characterized in that said hollow comprises an opening bordered by a centering wall ( 50 ) for a cartridge ( 2 ′) of broad format, the lower periphery of said wall being connected to a horizontal peripheral seat ( 35 ) whose internal diameter forms a support for a cartridge ( 2 ) of narrow format, the circular internal edge of this peripheral seat ( 35 ) being connected with a collecting zone ( 47 ) in the form of a downwardly directed funnel.

6. Coffee maker able to function with cartridges containing a beverage-producing product, comprising means for supplying hot water to an infusion head able to receive at least two cartridges ( 2 , 2 ′) of different diameters each having at least one flat seating surface, means for placing said means for supplying in communication with the product contained within the cartridges in order to obtain a beverage; as well as means permitting said beverage leaving the cartridge to be directed towards a beverage collecting container, where said infusion head has a support ( 11 ) having at least one hollow ( 29 ) forming a housing for at least two cartridges ( 2 , 2 ′) of different diameters, characterized in that said hollow ( 29 ) has a peripheral annular seat ( 35 ) common to several seating flange ( 6 , 6 ′) diameters of different cartridges, one or more parts of the external edge of said peripheral seat ( 35 ) forming a vertical wall for common indexing of said cartridges ( 2 , 2 ′), characterized in that said hollow ( 29 ) is intended to cooperate with at least two injection needles ( 19 , 21 ) of different heights.

7. Coffee maker according to claim 6 , characterized in that said injection needles ( 19 , 21 ) are offset radially with respect to the axis of said hollow ( 29 ), the longest needle ( 19 ) being the furthest from the center.

8. Coffee maker able to function with cartridges containing a beverage-producing product, comprising means for supplying hot water to an infusion head able to receive at least two cartridges ( 2 , 2 ′) of different diameters each having at least one flat seating surface, means for placing said means for supplying in communication with the product contained within the cartridges in order to obtain a beverage, as well as means permitting said beverage leaving the cartridge to be directed towards a beverage collecting container, where said infusion head has a support ( 11 ) having at least one hollow ( 29 ) forming a housing for at least two cartridges ( 2 , 2 ′) of different diameters, characterized in that said hollow ( 29 ) has a peripheral annular seat ( 35 ) common to several seating flange ( 6 , 6 ′) diameters of different cartridges, one or more parts of the external edge of said peripheral seat ( 35 ) forming a vertical wall for common indexing of said cartridges ( 2 , 2 ′), characterized in that said infusion head has two side-by-side hollows ( 29 , 31 ) in a common support ( 11 ).

9. Coffee maker according to claim 8 , characterized in that said two hollows ( 29 , 31 ) each have one peripheral annular seat ( 35 , 37 ) presenting at least one common vertical indexing wall, the two seats being located at the same level.

10. Coffee maker according to claim 9 , characterized in that said two hollows ( 29 , 31 ) each present a vertical indexing wall ( 39 , 40 ), the two walls being located at one side and the other of a partition ( 36 ) separating said hollows ( 29 , 31 ).