Patent ID: 8430022

Claim:
A brewing apparatus for a coffee machine, comprising a brewing cylinder with a cylindrical bore and an upper piston and a lower piston, by means of which the brewing cylinder is able to be closed off to form a brewing chamber, the brewing cylinder and the pistons being held in a way displaceable relative to one another in a frame and being drivable via a drive device, which drive device comprises a spindle, whose two ends are pivotably borne in the frame, in which a threaded part engages, which is disposed on a driven part attached to the lower piston, a coffee-powder feed device for filling of the brewing chamber with coffee powder, and a stripping element for stripping into a collection vessel of the coffee-powder cake, ejected from the brewing chamber by the lower piston after the brewing process and lying on the piston surface of the lower piston, which stripping element is mechanically drivable and has a stripping surface and a rear-side surface situated opposite the stripping surface, wherein the rear-side surface of the stripping element is provided with a protrusion which is disposed on the region facing the piston surface and has at least one deflecting surface, which is inclined with respect to the stripping direction.