Abstract: A filter device has a cup-shaped filter housing (1), a filter element (13) in the housing and at least one end cap (21). A retaining device detachably fixes the filter element (13) along its longitudinal axis and has screwing elements (33, 41) interacting with each other and configured on the interior of the filter housing (1) and on the filter element (13). A sealing device (38) forms the seal between the filter element (13) and a housing terminating part (5) limiting the filter housing (1) at an end. The housing terminating part (5) forms an element receiving device having a fluid passage (43) concentric to the longitudinal axis (3). The fluid passage has inner screwing elements (41). A connecting piece (31) of the end cap (21) is able to be screwed into the passage using outer screwing elements (33).

Abstract: A ventilation device for fluid-storing reservoirs includes a connecting part (1) attachable to the opening of the reservoir to form an air- and/or fluid-conducting connection between the inside of the reservoir and the surroundings. This connection is effectively sealed by a labyrinth-like seal of a system of seal passages (53, 59, 69, 73) from the penetration of media such as water and/or cleaning chemicals but is not sealed off from an exchange of air for ventilation. A filter element (61) is placed inside the connection. A portion of the seal passages (59, 69, 73) is formed on a ventilation chamber (41) releasably attachable to the connecting part (1) and having a seat (79) for the filter element provided as a filter leaf (61). The filter leaf (61) forms a partition between two successive seal passages (59 and 69) adjacently extending approximately parallel to one another.

Abstract: The invention relates to a filter device having a cup-shaped filter housing (1), comprising a filter element (13) held therein and having at least one end cap (21), and a retaining device serving for the detachable fixing of the filter element (13) along the longitudinal axis (3) thereof, said retaining device comprising screwing elements (33, 41) interacting with each other and configured on the interior of the filter housing (1) and on the filter element (13), and having a sealing device (38) forming the seal between the filter element (13) and a housing terminating part (5) limiting the filter housing (1) at an end, characterized in that the housing terminating part (5) forms an element receiving device having a fluid passage (43) that is concentric to the longitudinal axis (3), said fluid passage comprising inner screwing elements (41), a connecting piece (31) of the end cap (21) able to be screwed into said passage using outer screwing elements (33), and that the sealing device has a sealing element (38)