Abstract: A hollow fiber membrane made of two coextruded layers A and B, wherein layer B has a non-woven type structure having a mesh size of 0.1 to 10 ?m and layer A has a porous structure. A method for producing a membrane according to the invention and the use thereof is also disclosed.

Abstract: A transducer contains a rotor, on which permanent magnets are arranged in a concentrically radiant manner, and two stators are provided at both sides of the rotor. The stators are produced from a soft-magnetic material. Each stator contains a first stator section with radially outer supporting bars for first magnetic active faces of the stator being opposite the rotor and a second stator section with radial inner supporting bars for second magnetic active faces of the stators being opposite the rotor. An annular winding groove for receiving a winding is provided between the stator sections. Supporting bars are each arranged in an annular manner and each extend parallel to the rotor axis in the direction of the rotor. The magnetic active faces of the stators are end faces of projections which are uniformly spaced to one another and which protrude from the supporting bars in the direction of the rotor.

Abstract: A spherical roller bearing having a flanged disk designed as a hollow body, formed from a straight pipe section that is bent to form a ring having two ring ends that are joined. The ring is shaped into a flanged disk with a desired axial section geometry in a pressing device with a contour tool in a single pass.

Abstract: A spherical roller bearing having a flanged disk designed as as hollow body, formed from a straight pipe section that is bent to for a ting having two ring ends that are joined. The ring is shaped into a flanged disk with a desired axial section geometry in a pressing device with a contour tool in a single pass.

Abstract: A spherical roller bearing having a flanged disk designed as a hollow body, formed from a straight pipe section that is bent to form a ting having two ring ends that are joined. The ring is shaped into a flanged disk with a desired axial section geometry in a pressing device with a contour tool in a single pass.

Abstract: A method of manufacturing a hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.

Abstract: The present invention relates to a filter module and to a method of manufacturing a hollow fiber membrane bundle having at least two concentrically arranged filter stages. The present invention furthermore relates to a method of manufacturing a hollow fiber membrane bundle, to a disposable and to a blood treatment apparatus.

Abstract: The present invention relates to a membrane, in particular to a hollow fiber membrane comprising a membrane, comprising at least two layers, wherein the at least two layers each comprise at least one layer forming material comprising at least one polymer and the at least two layers differ from each other with respect to the layer forming material, wherein the at least two layers are at least partly covalently and delamination free bonded to each other. The present invention relates furthermore to a method of production of the said membrane as well as to its use.

Abstract: A control valve, which has a substantially cylindrical valve box and a substantially cylindrical control piston. The control valve can be arranged in a cylindrical receptacle and the control piston is arranged so as to be axially displaceable inside the valve box.

Abstract: The present invention relates to a hollow fiber membrane made of two coextruded layers A and B, wherein layer B has a non-woven type structure having a mesh size of 0.1 to 10 ?m and layer A has a porous structure. The present invention further relates to a method for producing a membrane according to the invention and the use thereof.

Abstract: A hollow fiber membrane made of two coextruded layers A and B, wherein layer B has a non-woven type structure having a mesh size of 0.1 to 10 ?m and layer A has a porous structure. A method for producing a membrane according to the invention and the use thereof is also disclosed.

Abstract: The present invention relates to a hollow fiber made of a semipermeable membrane material, with the hollow fiber having exactly one restriction over its total length in which the inner diameter of the hollow fiber is reduced with respect to the section or sections of the hollow fiber adjoining the restriction. The present invention further relates to a hollow fiber bundle, to a filter and to a method for the manufacture of a hollow fiber or of a hollow fiber bundle.

Abstract: Method for producing a spindle nut of a ball screw, by provided the circumference of the nut with at least one through-opening for receiving a deflecting piece for balls of the ball screw. A hole punch arranged in the spindle nut and operable to punch out the through-opening from radially inward to radially outward through the casing of the spindle nut.

Abstract: A hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.

Abstract: A hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.

Abstract: Method for the production of a spindle nut (3) of a spherical thread drive mechanism, whereby the spindle nut (3) has at least one screw-shaped track (4) formed as a single piece on its inner circumference, whose threads (38) are limited by shoulders (6). The shoulder (6) is interrupted by a deflecting recess (23) at at least one deflecting position, in order to deflect balls (13) out of one thread into an adjacent thread (38). The method includes locating a tool arbor (56) in a hollow blank (57), whereby the tool arbor (56) has on its outer circumference a counter profile of the screw-shaped track (4) and a projecting part (59) for each deflecting recess.

Abstract: A method for operating an internal combustion engine, in which an erroneous lift of an intake valve of a cylinder is directly determined. The lift of an intake valve of at least one cylinder of the internal combustion engine is diagnosed. A value for a specific cylinder which is representative of the air/fuel ratio in the respective cylinder is determined in an exhaust system branch of the internal combustion engine. At least one such value is compared to a predefined value. An erroneous lift of the intake valve is diagnosed as a function of the deviation of this at least one value from the predefined value.

Abstract: In an internal combustion engine, combustion air is supplied to at least one combustion chamber via at least one intake duct. The intake duct includes at least two parallel control sections, to each of which one final controlling device is allocated. Using these final controlling devices, the flow cross-section of the particular control section may be influenced. At least two final controlling devices are activated based on one single setpoint variable, and, in fact, using only one control and/or regulating system associated with the intake duct.

Abstract: The invention relates to a capillary membrane which comprises at least two coextruded layers in a way corresponding to the solution of the invention. The invention also relates to a device for producing the coextruded multilayer capillary membrane.

Abstract: Method for producing a spindle nut of a ball screw, by provided the circumference of the nut with at least one through-opening for receiving a deflecting piece for balls of the ball screw. A hole punch arranged in the spindle nut and operable to punch out the through-opening from radially inward to radially outward through the casing of the spindle nut.