Filter cartridge
AssigneeBrita LP
InventorsTobias Schuler, Bernd Freystedt
Life of this patent
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Abstract
A gravity-based filter cartridge having a cup-shaped upper part and a cup-shaped lower part, the upper part having a main axis (X), a first rim at a first axial end, a hole-free section at a second axial end, and at least one water inlet between the hole-free section and the first rim, the lower part having a second rim and at least one water outlet, wherein filter media is arranged in the lower part, the filter cartridge further including a mesh fixated to the upper part along a closed path, wherein the mesh is further fixated to the hole-free section radially inwards of the closed path as well as a method for manufacturing the same.
Claims20
A method for manufacturing a gravity-based filter cartridge, comprising the following steps:
- forming a cup-shaped upper part having a main axis X, a first rim at a first axial end, a hole-free section at a second axial end, and at least one water inlet between the hole-free section and the first rim, wherein the hole-free section comprises a support to which the mesh material is fixated at a distance to an end wall along the main axis X, wherein the support is a pin extending from the end wall along the main axis X towards the first axial end, wherein the pin has a length L of at least 5 mm,
- drawing a mesh material over the first rim,
- pushing the mesh material into the cup-shaped upper part towards the hole-free section, thereby forming a dome-shaped mesh,
- fixating the mesh material along a closed path to the first rim,
- fixating the mesh material radially inwards of the closed path to the hole-free section,
- cutting the mesh from the mesh material along a path radially outward of the closed path,
- forming a cup-shaped lower part having a second rim and at least one water outlet,
- inserting filter media into the lower part, and
- mounting the upper part onto the lower part with the second rim contacting the first rim.
A gravity-based filter cartridge comprising:
- a cup-shaped upper part and a cup-shaped lower part, the upper part having a main axis X, a first rim at a first axial end, a hole-free section at a second axial end, and at least one water inlet between the hole-free section and the first rim, the lower part having a second rim and at least one water outlet,
- wherein the hole-free section comprises a support to which the mesh material is fixated at a distance to an end wall along the main axis X,
- wherein filter media is arranged in the lower part,
- the filter cartridge further comprising a mesh fixated to the upper part along a closed path, wherein the mesh is further fixated to the hole-free section radially inwards of the closed path,
- wherein the support is a pin extending from the end wall along the main axis X towards the first axial end, and
- wherein the pin has a length L of at least 5 mm.
A gravity-based filter cartridge comprising:
- a cup-shaped upper part and a cup-shaped lower part, the upper part having a main axis X, a first rim at a first axial end, a hole-free section at a second axial end, and at least one water inlet between the hole-free section and the first rim, the lower part having a second rim and at least one water outlet,
- wherein the hole-free section comprises a support to which the mesh material is fixated at a distance to an end wall along the main axis X,
- wherein filter media is arranged in the lower part,
- the filter cartridge further comprising a mesh fixated to the upper part along a closed path, wherein the mesh is further fixated to the hole-free section radially inwards of the closed path.
Dependencies are inferred from the claim text.