Machine of the piston type for dispensing coffee or other brewed beverages
AssigneeLa Marzocco S.R.L.
InventorsAndrea Dionisio, Riccardo Gatti, Maurizio Beretta
Life of this patent
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Abstract
A machine (100) for espresso coffee of the piston type is described. The machine comprises a cylinder (1), a piston (2) which is configured to perform a translation movement in said cylinder, a rod (4) having an end cooperating with said piston (2), an operating lever (5), a spring (3), a member (6) configured to cooperate with said rod (4) and to move said piston (2) from a first position to a second position in which said spring (3) is at least partially compressed, and an opening (71) for introducing water into said cylinder (1) configured so as to introduce water above the piston (2).
Claims18
A coffee machine comprising:
- a cylinder,
- a piston which is configured to perform a translation movement in said cylinder,
- a rod having one end cooperating with said piston,
- an operating lever,
- a spring,
- a member configured to cooperate with said rod and to bring said piston from a first position to a second position in which said spring is at least partly compressed,
- a boiler configured for supplying heated water to the cylinder,
- an opening for introducing the heated water from said boiler into said cylinder configured so as to enter the water above the piston, wherein the piston comprises a duct which is closed when said piston is in the first position and is open when said piston is in the second position to let the water flow below the piston, wherein said opening is configured so as to permit the water to enter the cylinder above the piston both when said piston is in the first position and when said piston is in the second position;
- a pressure regulator arranged upstream from the boiler and configured to adjust pressure of the water inside the boiler.
A coffee machine comprising:
- a cylinder,
- a piston which is configured to perform a translation movement in said cylinder,
- a rod having one end cooperating with said piston,
- an operating lever,
- a spring,
- a member configured to cooperate with said rod and to bring said piston from a first position to a second position in which said spring is at least partly compressed,
- a boiler configured for supplying heated water to the cylinder,
- an opening for introducing the heated water from said boiler into said cylinder configured so as to enter the water above the piston, wherein the piston comprises a duct which is closed when said piston is in the first position and is open when said piston is in the second position to let the water How below the piston, wherein said opening is configured so as to permit the water to enter the cylinder above the piston both when said piston is in the first position and when said piston is in the second position;
- an adjuster configured to adjust preload of the spring and thereby adjust a pressure profile of the water in the cylinder;
- and
- a pressure regulator arranged upstream from the boiler and configured to adjust pressure of the water inside the boiler.
Dependencies are inferred from the claim text.