Device for preparing a dose of ground coffee powder
AssigneeDE' LONGHI APPLIANCES S.r.l.
InventorsGiovanni Rossetto, Massimo Poggioli, Alessandro Bellese, Roberto Sanson
Life of this patent
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Abstract
The device for preparing a dose of ground coffee powder ready for infusion comprises a cup provided with a gripping handle and housing a filter containing said dose of ground coffee powder, a coupling support in which the cup is coupled separably, and a pressing piston that is engageable in the filter for pressing the dose of ground coffee powder, the pressing piston having anti-detachment means configured to prevent the detachment of the pressed dose of ground coffee powder from the walls of the filter when the pressing piston disengages the filter.
Claims16
A device for preparing a dose of ground coffee powder ready for infusion, comprising:
- a cup provided with a gripping handle and housing a filter containing said dose of ground coffee powder,
- a coupling support in which said cup is coupled separately, and
- a pressing piston that is engageable in said filter for pressing said dose of ground coffee powder, wherein said pressing piston is configured to prevent the detachment of said pressed dose of ground coffee powder from walls of said filter when said pressing piston disengages said filter,
- wherein the pressing piston further comprises:
- a filtering element that is selectively permeable to the air but not to said ground coffee powder, wherein said filtering element is fitted to a head of said pressing piston, and
- air channels in said pressing piston that terminate on the head of said pressing piston behind said filtering element, wherein said air channels are permanently connected to the outer environment at atmospheric pressure.
A device for preparing a dose of ground coffee powder ready for infusion, comprising:
- a cup provided with a gripping handle and housing a filter containing said dose of ground coffee powder, a coupling support in which said cup is coupled separately, and a pressing piston that is engageable in said filter for pressing said dose of ground coffee powder, wherein said pressing piston is configured to prevent the detachment of said pressed dose of ground coffee powder from walls of said filter when said pressing piston disengages said filter, wherein said support comprises a vertical cylindrical conveying conduit conveying said dose of ground coffee powder to said filter, wherein said pressing piston is positioned inside said vertical cylindrical conveying conduit and comprises a scraping perimeter gasket on the inner side of said vertical cylindrical conveying conduit.
A device for preparing a dose of ground coffee powder ready for infusion, comprising:
- a cup provided with a gripping handle and housing a filter containing said dose of ground coffee powder,
- a coupling support in which said cup is coupled separately, and
- a pressing piston that is engageable in said filter for pressing said dose of ground coffee powder, wherein said pressing piston is configured to prevent the detachment of said pressed dose of ground coffee powder from walls of said filter when said pressing piston disengages said filter, wherein the pressing piston further comprises:
- a filtering element that is selectively permeable to the air but not to said ground coffee powder, wherein said filtering element comprises a flat support having a distribution of first holes and a mesh fixed to the flat support and having a distribution of second holes of a lesser dimension than the first holes.
Dependencies are inferred from the claim text.