A removable filter assembly for filtering a fluid having a particulate or a contaminant and configured to engage a filter housing having a center post. The removable filter assembly includes a filter element adapted to remove at least one of the particulate or contaminate from the fluid, wherein the filter element includes an interior wall defining a passage having a first end and a second end. A container arrangement includes a channel and an outer wall in contact with the filter element at the first end of the passage, wherein the outer wall defines an outer profile extending from the first end of the passage toward the second end of the passage. The channel defines an inner wall configured to provide a relatively fluid tight seal with the center post. The container arrangement is adapted to capture at least one of the particulate or contaminate from the fluid. The outer wall of the container arrangement can include a plurality of radially aligned ribs.

A removable filter assembly for filtering a fluid having a particulate or a contaminant and configured to engage a filter housing having a center post. The removable filter assembly includes a filter element adapted to remove at least one of the particulate or contaminate from the fluid, wherein the filter element includes an interior wall defining a passage having a first end and a second end. A container arrangement includes a channel and an outer wall in contact with the filter element at the first end of the passage, wherein the outer wall defines an outer profile extending from the first end of the passage toward the second end of the passage. The channel defines an inner wall configured to provide a relatively fluid tight seal with the center post. The container arrangement is adapted to capture at least one of the particulate or contaminate from the fluid. The outer wall of the container arrangement can include a plurality of radially aligned ribs.

A protruding portion is formed on an inner tube inserted into a hollow portion of a filter medium so as to protrude upward from a flange portion. The flange portion having a substantially circular plate shape is disposed on a lower side of a second plate. A recessed portion into which the protruding portion is inserted is formed on a surface on a lower side of the second plate provided so as to cover an opening at a lower end of the filter medium.

A protruding portion is formed on an inner tube inserted into a hollow portion of a filter medium so as to protrude upward from a flange portion. The flange portion having a substantially circular plate shape is disposed on a lower side of a second plate. A recessed portion into which the protruding portion is inserted is formed on a surface on a lower side of the second plate provided so as to cover an opening at a lower end of the filter medium.

A filter assembly has a housing defining an inlet and an outlet. A plurality of chemical filter elements are disposed in the housing and are arranged in a series with respect to fluid flow. A spacing region is between adjacent filter elements in the series. Also disclosed is an assembly having a housing and a first and second chemical filter element. The second chemical filter element is downstream of the first chemical filter element. Each chemical filter element has a sheet of chemical filter material having a first edge and a second edge. A first flow path is defined parallel to a surface of the first sheet extending from its first edge to its second edge. A second flow path is defined parallel to a surface of the second sheet extending from its first edge to its second edge.

A filter assembly has a housing defining an inlet and an outlet. A plurality of chemical filter elements are disposed in the housing and are arranged in a series with respect to fluid flow. A spacing region is between adjacent filter elements in the series. Also disclosed is an assembly having a housing and a first and second chemical filter element. The second chemical filter element is downstream of the first chemical filter element. Each chemical filter element has a sheet of chemical filter material having a first edge and a second edge. A first flow path is defined parallel to a surface of the first sheet extending from its first edge to its second edge. A second flow path is defined parallel to a surface of the second sheet extending from its first edge to its second edge.

A spin-on filter cartridge includes a flange with peripheral holes for entrance, and a middle hole for exit. The cartridge includes a container with a cylindrical side wall having a base at a first end, and an opening at a second end. The flange reversibly occludes the opening. The container reversibly connects to the flange by a bayonet. The cartridge includes a filter unit including a cylindrical side wall having a base at a first end, and an opening at a second end. The bases oppose each other, the filter unit opening opposing the flange. The filter unit rotates integrally with the container. A spring between the bases pushes the filter unit towards the flange, the filter unit dividing the space into a first compartment, outside the filter unit, accessible by peripheral holes of the flange, and a second compartment, inside the filter unit, accessible by the middle hole.

A spin-on filter cartridge includes a flange with peripheral holes for entrance, and a middle hole for exit. The cartridge includes a container with a cylindrical side wall having a base at a first end, and an opening at a second end. The flange reversibly occludes the opening. The container reversibly connects to the flange by a bayonet. The cartridge includes a filter unit including a cylindrical side wall having a base at a first end, and an opening at a second end. The bases oppose each other, the filter unit opening opposing the flange. The filter unit rotates integrally with the container. A spring between the bases pushes the filter unit towards the flange, the filter unit dividing the space into a first compartment, outside the filter unit, accessible by peripheral holes of the flange, and a second compartment, inside the filter unit, accessible by the middle hole.

A filter cartridge (1) is for a fluid filtration assembly (10). The filtration assembly (10) includes a bowl body (11) and a head body (12) having respectively a first and second collars (111, 121) to engage each other in rototranslation. The bowl body (11) has a filtration chamber (110) accessible through an access mouth (110′) delimited peripherally by the first collar (11) while the head body (12) has in the second collar (121) a slot (125). The filter cartridge (1) is housable in the bowl body (11) having a filter medium (2) and an end plate (3) to engage the first collar (111). The filter cartridge (1) is snap-blockable in the axial direction to the bowl body (11) by an active blocking member (31). The filter cartridge (1) includes an anti-rotation element (32) extending radially from the end plate (3) for being housed in the slot (125).

A filter cartridge (1) is for a fluid filtration assembly (10). The filtration assembly (10) includes a bowl body (11) and a head body (12) having respectively a first and second collars (111, 121) to engage each other in rototranslation. The bowl body (11) has a filtration chamber (110) accessible through an access mouth (110′) delimited peripherally by the first collar (11) while the head body (12) has in the second collar (121) a slot (125). The filter cartridge (1) is housable in the bowl body (11) having a filter medium (2) and an end plate (3) to engage the first collar (111). The filter cartridge (1) is snap-blockable in the axial direction to the bowl body (11) by an active blocking member (31). The filter cartridge (1) includes an anti-rotation element (32) extending radially from the end plate (3) for being housed in the slot (125).