Abstract: 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.

Abstract: A filter device, having a filter housing (2) in which an exchangeable filter element (14) is accommodated, is characterized in that the filter element (14) has a securing device (58) that can be inserted axially into a receiving device (20) of the filter housing (2), in that, after a rotational motion has been performed, snap means (70) are used to snap the securing device (58) to the receiving device (20) in a snap position.

Abstract: A filter device having a filter housing (1), in which a replaceable filter element (7) is accommodated and which has a cover part (2), wherein the element material (9) of the filter element (7) extends between two end caps (13, 14) of the latter, is characterized in that the filter housing (1), which is formed as an outlet pipe (3), extends between both end caps (13, 14) as well.

Abstract: A filter device with a filter housing (2, 6), in which a replaceable filter element (4) is accommodated and which has a cover part (2), wherein the element material (30) is delimited at the end by at least one end cap (32), is characterized in that at least this one end cap (32) of the filter element (4) is placed on a fluid channel (58) and in that a device (84) for transverse force support for the filter element (4) is provided between this one end cap (32) and the fluid channel (58), wherein said device (84) for transverse force support supports the filter element (4) in relation to the fluid channel (58) engaging in the interior of the filter element (4) at least partially at the end.

Abstract: A filter device having a filter housing (14), consisting of a housing pot (12), which accommodates a replaceable filter element (16) and is closed by a removable lid part (32), wherein the element material (20) of the filter element (16) separates an unfiltrate chamber (22) from a filtrate chamber (18, 43), and having a measurement sensing device (108) for sensing pressure values from at least one of the chambers (18, 22, 43) is disclosed, which is characterized in that the measurement sensing device (108) is disposed on a lid inner side (45) of the lid part (32) and at least partially guided therein, projects into the filter housing (14) and in that at least parts of a measurement value evaluator (78) connected to the measurement sensing device (108) are disposed on the opposite lid outer side (42) facing the environment.

Abstract: A filter device for fluids, in particular in the form of a tank-installation return filter, includes a filter element (27) accommodated in a housing (3) having a fluid inlet (17) for supplying unfiltered fluid to an inner cavity (31) of the filter element (27). The inner cavity is surrounded by a filter medium (29) through which unfiltered fluid can flow. A flow-conducting apparatus (13, 49, 77) orients the flow of the unfiltered fluid reaching the filter medium (29) and is provided between the fluid inlet (17) and the inner cavity (31) of the filter element (27).

Abstract: A filter device has at least one filter element (17, 19) exchangeably received in a housing (9). The filter element has a filter medium (23) permeable to a flow of the fluid to be purified and has, on at least one end, an end cap (25) that, for the purpose of positioning of the filter element (17, 19) in a functional position, interacts with a fixing body (33) connected to a removable cover (11) of the housing (9). A bypass valve (51) is provided on the fixing body (33). On the fixing body (33), a wall part (57) in the functional position forms a dividing element in the housing separating the housing into a filter element chamber (65) and a bypass chamber (63) situated at the outflow side of the bypass valve (51). The bypass chamber has a protective filter (67) through which the fluid flowing out of the bypass valve (51) can flow.

Abstract: A filter device has a support part (39, 43) receiving a filter part (1), a sealing device (17) acting between the support part (39, 43) and the filter part (1), and a securing device (53, 57, 61) releasably connecting the support part (43) to the filter part (1). The securing device has a circumferential collar part (53) that, under the action of an energy store (61), exerts a force on the sealing device (17). That force seals the support part (39, 43) and the filter part (1) in a fluid-tight manner with respect to one another. The support part (39, 43) has, on its end region oriented toward the securing device (53, 57, 61), another circumferential collar part (39). The collar part (53) of the securing device (53, 57, 61) is guided concentrically within the collar part (39) of the support part (39, 43) provided with a sealing system (41, 72).

Abstract: The invention relates to a filter element consisting of at least two end caps (3, 5), between which extends a filter material (7), characterized in that the end caps (3, 5) have connection geometries (11, 13) for the connection to third components, the connection geometries differing from one another.

Abstract: A filter device, having a support part (39, 43) and a filter part (1) that can be received therein, having at least one sealing device (17) that acts between the support part (39, 43) and the filter part (1), and having a securing device (53, 57, 61) for releasably connecting the support part (43) to the filter part (1), which securing device has a circumferential collar part (53) and, under the action of at least one energy store (61), exerts a force on the sealing device (17), which force seals the support part (39, 43) and the filter part (1) in a fluid-tight manner with respect to one another, wherein the support part (39, 43) has, at least on its end region oriented toward the securing device (53, 57, 61), another circumferential collar part (39), is characterized in that the collar part (53) of the securing device (53, 57, 61) is guided concentrically within the collar part (39) of the support part (39, 43) which is provided with a sealing system (41, 72).

Abstract: A filter element (1) has an inner body (12) and an outer body (11). One casing body (12) has a cross section deviating from circularity. Body contact surfaces (20, 21) face one another for the contact of essentially all filter folds (18a-18f, 18I-18III) of a pleated filter web (10). The filter folds (18a-18f, 18I-18III), in terms of fold height (h), are divided into individual groups (I, II) each having several filter folds (18I-18II) of a common fold height (hmax, hmin) alongside one another in sections. Between two adjacent filter folds (18a-18f, 18I-18III) of different groups (I, II) filter folds are arranged (18b-18e; 18m) of at least one third group (III).

Abstract: The invention relates to a filter device for fluids, in particular in the form of a tank-installation return filter, comprising at least one filter element (27), which can be accommodated in a housing (3), which has a fluid inlet (17) for supplying unfiltered fluid to an inner cavity (31) of the respective filter element (27), which inner cavity is surrounded by a filter medium (29) through which unfiltered fluid can flow. The filter device is characterized in that a flow-conducting apparatus (13, 49, 77) that orients the flow of the unfiltered fluid reaching the filter medium (29) is provided between the fluid inlet (17) and the inner cavity (31) of the respective filter element (27).

Abstract: A filter device, having at least one filter element (17, 19) which can be received in preferably exchangeable fashion in a housing (9) and which has a filter medium (23) permeable to a flow of the fluid to be purified and which has, on at least one end, an end cap (25) which, for the purpose of positioning of the respective filter element (17, 19) in a functional position, interacts with a fixing body (33) which is connected to a removable cover (11) of the housing (9), and having a bypass valve (51) which is provided on the fixing body (33), is distinguished by the fact that, on the fixing body (33), there is provided a wall part (57) which, in the functional position, forms a dividing element in the housing (9), which dividing element separates the housing into a filter element chamber (65) and a bypass chamber (63) situated at the outflow side of the bypass valve (51), and that, in said bypass chamber, there is provided a protective filter (67) through which the fluid flowing out of the bypass valve (51) c

Abstract: A filter element (1) having at least one inner (12) and an outer casing body (11), of which at least one casing body (12) has a cross section deviating from circularity and which have contact surfaces (20, 21) facing one another for the contact of essentially all filter folds (18a-18f, 18I-18II) of a pleated filter web (10), the filter folds (18a-18f, 18I-18II), in terms of fold height (h), being divided into individual groups (I, II) each having several filter folds (18I, 18II) of a common fold height (hmax, hmin) alongside one another in sections, is characterized in that between two adjacent filter folds (18a-18f, 18I-18II) of different groups (I, II) are arranged filter folds (18b-18e; 18m) of at least one further third group (Ill), the filter folds (18b-18e, 18m) assigned to the third group (III), in the manner of step formation, have a common fold height (ho) which is different from the respective fold height (hmax, hmin) of the filter folds (18I, 18II) of the two adjacent neighbouring groups (I, II), a

Abstract: The invention relates to a filter apparatus, especially intended for incorporation into a fluid reservoir tank (10) with at least one preferably exchangeable filter element (18) through which fluid can flow from the inside outward and which is surrounded, in each case maintaining a presettable radial distance and with formation of a fluid flow space (66), by a housing wall (44) which has a plurality of passage sites of which some are arranged below the particular adjustable fluid level (68) in the reservoir tank (10) and the rest are arranged above this fluid level (68). The invention further relates to a filter element for this kind of apparatus.

Abstract: A filter element (1) has an inner body (12) and an outer body (11). One casing body (12) has a cross section deviating from circularity. Body contact surfaces (20, 21) face one another for the contact of essentially all filter folds (18a-18f, 18I-18III) of a pleated filter web (10). The filter folds (18a-18f, 18I-18III), in terms of fold height (h), are divided into individual groups (I, II) each having several filter folds (18I-18II) of a common fold height (hmax, hmin) alongside one another in sections. Between two adjacent filter folds (18a-18f, 18I-18III) of different groups (I, II) filter folds are arranged (18b-18e; 18m) of at least one third group (III).