Patent ID: 8376147

Claim:
A filter cartridge with a filter material, comprising: a cartridge container with a bottom wall and a peripheral wall and a lid, which shuts the cartridge container, comprised of a lid bottom and a strip-shaped lateral wall having a length measured parallel to the peripheral wall and having a linear vertical cross section along the entire length of the lateral wall, wherein the lateral wall is fitted at the inner side of the peripheral wall and the lateral wall is in contact with the peripheral wall along the entire length of the lateral wall, wherein the lid bottom merges with the lateral wall in the direction of the peripheral wall along a first end of an inward curved edge section, wherein the first end of the curved edge section and the lateral wall join in a common wall section, tapering inwards, in a forming region, wherein a lower end of the common wall section is parallel to the cartridge container peripheral wall adjacent thereto, and wherein the lateral wall has an upper wall section which is connected to and extends upward from the common wall section that is parallel to the common wall section lower end and cartridge container peripheral wall adjacent thereto, wherein glue or a weld connects at least one section of the common wall section to the peripheral wall, and wherein the curved edge section has a second end that merges into an essentially horizontal lid bottom middle section.