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Brewing head for an espresso machine

  • US 20060117960A1
  • Filed: 12/02/2005
  • Published: 06/08/2006
  • Est. Priority Date: 12/04/2004
  • Status: Abandoned Application
First Claim
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1. Brewing head of an espresso machine including a pressure-tightly closing brewing compartment, comprising an inlet for boiling water, a filling opening for fresh coffee powder, an outlet for freshly brewed espresso and a force-controlled lifting piston (4, 4a) disposed in said brewing compartment within the peripheral wall thereof, by means of which a leached-out coffee powder cake (69) is lifted, after the brewing process, up to an upper edge of said peripheral wall from which said coffee powder cake is laterally removed by a scraper, said scraper being associated with a carriage (19) which can be moved along a glide face (41) above an opening of said brewing compartment and which has a seal by which, in a working position of said carriage (19), said opening of said brewing compartment can be sealed, characterized by a brewing compartment sleeve (3) forming the peripheral wall of said brewing compartment substantially movable perpendicularly to the plane of said glide face (41) which can force-controlledly be moved, in the working position (FIGS. 2, 9) of said carriage (19), through the plane of said glide face (41) into a sealing position at which said brewing compartment is sealed by means of said seal and, after a brewing process, can be moved back from the plane of said glide face (41) into a rest position so that said carriage (19) can be moved into a start position (FIGS. 1, 3, 4, 7) next to said brewing compartment.

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