A filter assembly including a housing (15) and a filter cartridge (10). The housing has a housing inlet (16) and a housing outlet (17). The filter cartridge (10) has a filter inlet (11) fluidly connected to the housing inlet (16) and a filter element (12) between a top cap (18) and a bottom cap (19). The top cap (18) and the bottom cap (19) create a circular guiding system. The bottom cap (19) has a first part (19a) that receives the filter element (12) and a second part (19b) that is connected with a mating surface (20) of the housing. The second part has a first circular section (21a) and a second section (21b) and the first section has another shape than the second section (21b), such that the bottom cap (19) cannot rotate in relation to the mating surface.

A filter comprising a filter housing (10) and a replaceable filter element (12) arranged in the filter housing (10) and having annular upper and lower end members (12a, 12b) and an inner space, wherein the filter housing (10) comprises a housing pot (10a) having a fluid in-let (10e), a fluid outlet and an opening (10b) for inserting the filter element (12). The filter has a support tube (16) extending in the inner space of the filter element (12) and connected to a bottom of the filter housing (10) and a locking member (14), the locking member (14) being adapted to engage the support tube (16) and generate a holding or pushing or pulling force supported on the filter housing via the support tube (16) for holding or pushing or pulling the filter element (12) into or out of the housing bowl (10a).

A seal arrangement for a filter for fluid-tight sealing between a filter element and a filter head includes an annular elastic seal, a filter head sealing face and a filter element sealing face. The seal has a filter head side facing the filter head sealing face, a filter element side facing the filter element sealing face, an inner face running circumferentially on the inner side, and an outer face running circumferentially on the lateral side. The filter head side has a circumferential first recess between the inner and outer faces. The filter element side has a circumferential second recess between the inner and outer faces. The seal arrangement is configured in such a way that the seal, when subjected to a pressure from the inner face and/or from the outer face, is wedged in the direction of the acting force, between part faces of the sealing faces that narrow toward the middle.

A rechargeable spin-on filter includes a cover, a housing threadably joined with the housing, and a filter element that can be removed and replaced with another filter element relative thereto. The cover and/or housing can be plastic. The cover can include a bottom plate having inlet ports and an outlet port. The filter element can include an end cap defining a perimeter about an inner dimension, such as an inner diameter. The cap can define a groove to receive a rib of a support tube over which the element is installed. Alignment of the rib and groove can index and register the element with the support tube. A related method is provided.

A filter cartridge includes a shell, a connecting ring, an end cap, and an axially directed sealing member. The shell defines an inner cavity and an upper lip disposed along an upper edge of the inner cavity. The upper lip defines a channel. The connecting ring is positioned outside of the inner cavity and is engaged with the channel. The connecting ring includes a threaded region extending along a central axis of the shell. The end cap is engaged with the shell adjacent to the upper lip. The axially directed sealing member is positioned between the shell and the end cap and extends axially outward so as to form an axial seal with a filter head when the filter cartridge is installed on the filter head.

A filter device having a filter housing (14), in which a replaceable filter element (18) is accommodated, and having a filter head (26) for securing the filter housing (14) to a third component, such as a tank wall (10) of a storage tank, is characterized in that the filter housing (14) is mounted on the filter head (26) in an articulated manner by means of a bearing (28) providing more than one degree of freedom.

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 element has a first follower element with a first traction surface and a second follower element with a second traction surface provided for interacting with first and second mating surfaces of the filter housing, respectively. The first and second traction surfaces interact with the first and second mating surfaces to pull out the filter element from the filter housing. The first and second traction surfaces are spaced apart from each other along a longitudinal axis of the filter element and project radially into the interior of the filter element. At least one of the first and second follower elements has a stop surface adjoining circumferentially the respective traction surface. In a position of use, the stop surface interacts with a counter stop surface of the filter housing to form an at least unidirectional rotational degree of freedom blocking about the longitudinal axis relative to the filter housing.

A filter device is provided with a filter element for filtering a fluid. The filter element has a filter medium body with an end plate arranged at an end face of the filter medium body in relation to a longitudinal axis of the filter medium body. A filter base housing receives the filter element. An assembly component for assembly and disassembly of the filter element in the filter base housing is connectable to the end plate and to the filter base housing by rotation about the longitudinal axis. The assembly component has interlocking elements. An interlocking counter element is arranged at the end plate. The interlocking elements can be brought into axial interlocking connection with the interlocking counter element, while enabling a free rotatability in rotational direction about the longitudinal axis. The interlocking counter element is a circumferential interlocking collar with insertion ramps for insertion of the interlocking elements.

A filter such as a liquid filter for use with a filter head that includes a filter base collar is provided. The collar retains the filter to the filter base and includes a plurality of protrusions and receiving gaps between adjacent protrusions. The filter has a mounting interface including an inlet port, an outlet port and a plurality of radial projections, with the mounting interface configured for fluid communication filter head and with the radial projections being arranged in an annular array configured to pass through the receiving gaps and also configured to axially engage the protrusions of the collar.