Abstract: A media delivery assembly in which a defined compensating pressure is established at the backs of included axially adjustable rotors and a control valve is provided for establishing the compensating pressure at a predetermined value between a pressure on the pressure side and a pressure on the suction side.

Abstract: A filter element (1) with a hollow-cylindrical star-shaped folded filter medium (2) and glued-on terminal disks (3) on at least one of the end faces of the filter medium (2) is proposed in which the respective end face contour of the filter medium (2), the intermediate space between the filter medium (2) and the respective terminal disks (3), and/or the respective contour of the terminal disk (3) is designed, for example, by slants (8, 9) or spacers (10), such that at the inner diameter of the hollow-cylindrical star-shaped folded filter medium (2) an enlarged gap for an adhesive connection (4) between the filter medium (2) and the respective terminal disks (3) is provided so that the folds at the inner diameter are thus safely adhesively connected.

Abstract: An axial flow filter element including alternating flat and folded media layers forming axial channels, one end of a first group of channels being sealed and the remaining channels being sealed at the other end so fluid flowing through the element passes from channels of the first group through the filter media to channels of the second group to exit the filter; channels of the second group adjoining each side of channels of the first group spaced from the edge of the filter element so fluid flows through the entire lateral area of the first channels; an annular sealing collar adjacent an axial end face of the filter element connected to the exterior of the element to seal the element in a housing; part of the collar projecting axially beyond the end face of the element, and a frame connected to the projecting part for radially supporting the collar.

Abstract: A filtering device for filtering liquids in internal combustion engines has a filter housing and a filter element inserted into the filter housing. A cover disk closes off the filter housing. The cover disk consists of two individual disks and a central flow connection connects the two individual disks. The two individual disks and the flow connection form a common plastic component.

Abstract: An ion exchanger vessel having a housing for receiving an ion exchange material and an inlet line and a discharge line in the housing for feeding and discharging a liquid to be passed through the ion exchange material. To heat the liquid, a heating medium is guided through the ion exchanger vessel, such that the heating medium is separated from the liquid to be passed through the ion exchange material.

Abstract: The invention concerns a desiccant box for dehumidifying air, with a cylindrical outer housing (10), a lid (11) that closes the outer housing, and an inner housing (12) to accommodate desiccant (13). The lid (11) features at least one inflow opening (14) and at least one outflow opening (15), the contour of the outer housing opposite the lid being curved. Moreover, another inner housing (17) is provided which is located in the area of the contour (16) and runs approximately along this contour, this inner housing being also filled with desiccant (18), and the two inner housings (12 and 17) being connected to each other.

Abstract: A fuel module, especially for the diesel fuel of an auto-ignition engine, having a fuel tank (10) and a fuel filter (11). The fuel tank (10) has a wall (12), which encloses the volume of the fuel tank (10), and the wall (12) has an opening in the region of the fuel filter (11). The fuel filter (11) is sealed to the wall (12) in the region of the opening and contains a filter medium (26), which is suitable for separating water from the fuel, which is to be cleaned. Also disposed within the fuel filter (11) is a water storage unit (38) in which water separated from the fuel is collected.

Abstract: A liquid filter (1) for filtering fuel or another liquid, including a filter element (9) disposed in a housing (2) and having at least one end cap (3, 4) formed by a section of the housing (2). The filter element (9) is embedded in the end cap (3, 4) or is at least joined to the end cap in an electrically conductive manner. The end cap (3, 4) is composed of an electrically conductive synthetic resin material, and an electric contact (14) for conducting away an electric charge is provided on the housing (2), preferably on the end cap (3, 4).

Abstract: A filter insert (1) having an annular filter element (2) which is connected in a fluid-tight manner to a cover (5) on one axial end face (3) and to a base (6) on an opposite axial end face (4). The filter element (2) has a central channel (25) in which a central tube (8, 28) is situated. The central tube (8, 28) extends between the cover (5) and the base (6) and communicates with a central opening (7) in the cover (5). To ensure high stability of the filter (1) with a low manufacturing complexity, the central tube (8, 28) is designed to have a variable length in the direction of its longitudinal central axis (10).

Abstract: An axial flow filter element including alternately arranged flat and folded filter media layers forming axial channels having an open cross-section, one end of each channel of a first group being sealed and the remaining channels being sealed at the other end so that fluid flowing through the element from an inflow face at one axial end must pass from a channel of the first group through the filter media to a channel of the second group to exit from a discharge face at the other axial end; a channel of the second group adjoining each side of each channel of the first group spaced from the edge of the filter element so fluid can flow through the entire lateral area of the first group of channels except for the folded edges; a peripheral seal constructed as an annular collar adjacent an axial end face of the filter element and connected by an axial section to the exterior of the filter element for sealing the inflow end from the discharge end in a housing; a part of the annular collar protruding axially beyond

Abstract: An ion exchanger vessel having a housing for receiving an ion exchange material and an inlet line and a discharge line in the housing for feeding and discharging a liquid to be passed through the ion exchange material. To heat the liquid, a heating medium is guided through the ion exchanger vessel, such that the heating medium is separated from the liquid to be passed through the ion exchange material.

Abstract: An oil filter unit for arrangement in the oil sump of an oil circuit, particularly in an automatic transmission. The oil filter unit has a multi-part filter housing with a filter chamber disposed therein such that an oil inlet and an oil outlet communicate with the filter chamber. A filter element is sealingly mounted in the housing between the oil inlet and the oil outlet. The filter element has a pleated filter medium, which is sealingly enclosed by a frame, and the frame has seal contours designed to cooperate with the contours of the filter housing.

Abstract: A fuel module, especially for the diesel fuel of an auto-ignition engine, having a fuel tank (10) and a fuel filter (11). The fuel tank (10) has a wall (12), which encloses the volume of the fuel tank (10), and the wall (12) has an opening in the region of the fuel filter (11). The fuel filter (11) is sealed to the wall (12) in the region of the opening and contains a filter medium (26), which is suitable for separating water from the fuel, which is to be cleaned. Also disposed within the fuel filter (11) is a water storage unit (38) in which water separated from the fuel is collected.

Abstract: A method for producing a tight joint between a multi-layer synthetic resin material and a filter medium by selectively melting a layer of the synthetic resin material which has a different thermal absorption capacity in comparison with the other layers by heating the synthetic resin material with infrared radiation, and then fusing the melted synthetic resin layer to the filter medium. A filter element produced by the method of the invention is also disclosed.

Abstract: A filter insert (1) having an annular filter element (2) which is connected in a fluid-tight manner to a cover (5) on one axial end face (3) and to a base (6) on an opposite axial end face (4). The filter element (2) has a central channel (25) in which a central tube (8, 28) is situated. The central tube (8, 28) extends between the cover (5) and the base (6) and communicates with a central opening (7) in the cover (5). To ensure high stability of the filter (1) with a low manufacturing complexity, the central tube (8, 28) is designed to have a variable length in the direction of its longitudinal central axis (10).