Abstract: The present disclosure relates to a luminous means having a cap and an outer bulb in which LEDs are arranged on a flat multilayer substrate which is constructed, at least in regions, from at least two substrate layers between two outside surfaces which are opposite one another, wherein the at least two substrate layers are formed from a flat substrate sheet which is laid back on itself, and wherein the LEDs are mounted on a side surface of the substrate sheet, which at least proportionally forms the two outside surfaces of the multilayer substrate in each case on account of the substrate sheet being laid back, in such a manner that at least one of the LEDs is mounted in each case on both of the two outside surfaces of the multilayer substrate.

Abstract: A filter element is provided with a filter medium body that is a folded filter of filter paper. The filter medium body has an inflow side and an outflow side. A sealing element is arranged on the filter medium body. At an end edge face, the filter medium body has an adhesive bead filling at least partially intermediate fold spaces at end edges of the folds. The filter medium body has a lateral band adhesively connected to and covering the end edge face positioned at an angle relative to the inflow and outflow sides. The lateral band is connected to end edges of the folds at the end edge face and extends all the way to the inflow and outflow sides. The lateral band has at least one leg resting on the inflow side or the outflow side adjacent to a rim area of the filter medium body.

Abstract: A light fixture comprises two cooling elements and a plurality of semiconductor lighting elements, wherein each cooling element has a central portion and a wall portion which extends away from the central portion and at least partially surrounds an interior of a cooling element. The two cooling elements are arranged opposite one another. An annular opening for exchange of air with the environment is present between the two cooling elements. The semiconductor lighting elements are arranged on the outside of the wall portion of the cooling elements. A corresponding cooling element has two or more vanes, wherein all vanes are connected to one another by means of a central connecting element. Each vane extends in an axial direction and in a circumferential direction and has a curvature in the axial direction and preferably a curvature in the circumferential direction.

Abstract: A filter module for filtering a fluid is provided with a filter element that has a filter bellows of a filter medium. A fastening frame is connected to the filter element and has a frame wall enclosing circumferentially at least partially a rim of the filter element. A circumferentially extending first sealing element is arranged on an exterior side of the frame wall. The fastening frame has at least one locking element on an exterior side. A second sealing element seals the raw side and the clean side relative to each other, and can be guided into a sealing position upon locking at least one locking element in the installation position.

Abstract: The present invention relates to a lighting means comprising at least two LEDs mounted on opposite sides of a flat printed circuit board, said printed circuit board being combined with a reflector which is free of LEDs, a part of the light emitted by each LED being reflected by the reflector to homogenize the light distribution generated by the lighting means, and specifically in each case with a directional component parallel to a surface direction of the flat printed circuit board.

Abstract: A luminous means is disclosed, the luminous means having LEDs on a substrate, an outer bulb in which the substrate having the LEDs is arranged, and a cap, wherein at least two partial surfaces of the substrate are folded out with respect to the remaining substrate around a bridge area in each case, via which the particular partial surface is connected to the remaining substrate, and are thus set obliquely with respect to the remaining substrate which is flat per se, wherein, for each side surface of the remaining substrate, which side surfaces are opposite one another with respect to a thickness direction of the remaining substrate, at least one partial surface is folded out in each case, and wherein at least one of the LEDs is arranged on each of the partial surfaces.

Abstract: The present invention relates to a luminous means comprising an enveloping bulb, a base, a first LED and a second LED, which are assembled on a planar printed circuit board, to be precise on the opposite side thereof in relation to a thickness direction, wherein a first diverging lens is mounted on the first side of the printed circuit board in a manner assigned to the first LED and a second diverging lens is mounted on the second side of the printed circuit board in a manner assigned to the second LED for the purposes of homogenizing the light distribution generated by the luminous means, and the light emitted by the respective LED has a widened luminous intensity distribution downstream of the respective diverging lens in comparison with upstream of the respective diverging lens.

Abstract: An illuminant with at least two LEDs mounted on mutually opposite sides of a support plate and a reflection surface formed as a concave mirror, in which concave mirror the LEDs are arranged, wherein a housing part of the illuminant made of a transparent housing material is provided, which housing part at the same time forms an in relation to the main propagation direction lateral external surface of the illuminant and supports a reflecting layer forming the reflection surface at an internal surface opposite to the external surface.

Abstract: A light fixture comprises two cooling elements and a plurality of semiconductor lighting elements, wherein each cooling element has a central portion and a wall portion which extends away from the central portion and at least partially surrounds an interior of a cooling element. The two cooling elements are arranged opposite one another. An annular opening for exchange of air with the environment is present between the two cooling elements. The semiconductor lighting elements are arranged on the outside of the wall portion of the cooling elements. A corresponding cooling element has two or more vanes, wherein all vanes are connected to one another by means of a central connecting element. Each vane extends in an axial direction and in a circumferential direction and has a curvature in the axial direction and preferably a curvature in the circumferential direction.

Abstract: A filter element is provided with a filter medium body that is a folded filter of filter paper. The filter medium body has an inflow side and an outflow side. A sealing element is arranged on the filter medium body. At an end edge face, the filter medium body has an adhesive bead filling at least partially intermediate fold spaces at end edges of the folds. The filter medium body has a lateral band adhesively connected to and covering the end edge face positioned at an angle relative to the inflow and outflow sides. The lateral band is connected to end edges of the folds at the end edge face and extends all the way to the inflow and outflow sides. The lateral band has at least one leg resting on the inflow side or the outflow side adjacent to a rim area of the filter medium body.

Abstract: The present invention relates to a luminous means (1) comprising an enveloping bulb (3), a base (4), a first LED (21a) and a second LED (21b), which are assembled on a planar printed circuit board (2), to be precise on the opposite sides (20) thereof in relation to a thickness direction, wherein a first diverging lens (5a) is mounted on the first side (20a) of the printed circuit board (2) in a manner assigned to the first LED (21a) and a second diverging lens (5b) is mounted on the second side (20b) of the printed circuit board (2) in a manner assigned to the second LED (21b) for the purposes of homogenizing the light distribution generated by the luminous means (1), and the light emitted by the respective LED (21) has a widened luminous intensity distribution downstream of the respective diverging lens (5) in comparison with upstream of the respective diverging lens (5).

Abstract: The present invention relates to a lighting means (71) comprising at least two LEDs (3) mounted on apposite sides (21a, b) of a flat printed circuit board (1), said printed circuit board (1) being combined with a reflector (2) which is free of LEDs, a part of the light emitted by each LED (3) being reflected by the reflector (2) to homogenize the light distribution generated by the lighting means (71), and specifically in each case with a directional component parallel to a surface direction (24) of the flat printed circuit board (1).

Abstract: The present invention relates to a luminous means (1) having a cap (6) and an outer bulb (5) in which LEDs (3) are arranged on a flat multilayer substrate (2) which is constructed, at least in regions, from at least two substrate layers (81) between two outside surfaces (4) which are opposite one another, wherein the at least two substrate layers (81) are formed from a flat substrate sheet (21) which is laid back on itself, and wherein the LEDs (3) are mounted on a side surface (84) of the substrate sheet (21), which at least proportionally forms the two outside surfaces (4) of the multilayer substrate (2) in each case on account of the substrate sheet (21) being laid back, in such a manner that at least one of the LEDs (3) is mounted in each case on both of the two outside surfaces (4) of the multilayer substrate (2).

Abstract: The present invention relates to a luminous means (1) having LEDs (23) on a substrate (2), an outer bulb (3) in which the substrate (2) having the LEDs (23) is arranged, and a cap (4), wherein at least two partial surfaces (2a) of the substrate (2) are folded out with respect to the remaining substrate (2b) around a bridge area (25) in each case, via which the particular partial surface (2a) is connected to the remaining substrate (2b), and are thus set obliquely with respect to the remaining substrate (2b) which is flat per se, wherein, for each side surface of the remaining substrate (2b), which side surfaces are opposite one another with respect to a thickness direction of the remaining substrate (2b), at least one partial surface (2a) is folded out in each case, and wherein at least one of the LEDs (23) is arranged on each of the partial surfaces (2a).

Abstract: A filter module for filtering a fluid is provided with a filter element that has a filter bellows of a filter medium and is provided with a designated raw side and a designated clean side oppositely positioned relative to the designated raw side. A fastening frame is connected to the filter element and has a frame wall enclosing circumferentially at least partially a rim of the filter element. A circumferentially extending first sealing element is arranged on an exterior side of the frame wall of the fastening frame. The fastening frame has at least one locking element on an exterior side of the fastening frame. A second sealing element that seal the raw side and the clean side relative to each other is arranged on the filter element. The second sealing element can be guided into a sealing position upon locking of the at least one locking element in the installation position of the filter module.

Abstract: An illuminant with at least two LEDs mounted on mutually opposite sides of a support plate and a reflection surface formed as a concave mirror, in which concave mirror the LEDs are arranged, wherein a housing part of the illuminant made of a transparent housing material is provided, which housing part at the same time forms an in relation to the main propagation direction lateral external surface of the illuminant and supports a reflecting layer forming the reflection surface at an internal surface opposite to the external surface.

Abstract: A device for aeration, particularly for microbiological fermentation and for cell cultivation in a closed chamber. The device includes a sterilizable reactor (1) and a vertical stirring shaft (2) with numerous aeration and/or stirring elements (10) which are attached thereto and arranged in multiple levels vertically. The aeration elements (15) are constructed to create such an aeration of the liquid in the reactor that the gases are evenly introduced into the liquid as micro bubbles. The device also includes a recoil nozzles (20) connected to gas feed channels (11, connected to gas feed channels (11,12) connected to gas feed channels (11, 12, 14) for the purpose of driving the aeration and/or stirring elements (10) attached to the rotatably mounted stirring shaft (2). The result is a space-saving and absolutely hermetic construction of such a device.

Abstract: A method for metering an additive for a regeneration process of a particle filter activated in the exhaust gas system of an internal combustion engine, in particular of a diesel engine, the quantity of the additive to be metered in being calculated from the soot production of the internal combustion engine.

Abstract: Method for determining a starting time of a regeneration process of a particle filter which is connected into the exhaust train of an internal combustion engine, in particular of a diesel engine, wherein the data of an air mass flow rate meter, of an exhaust gas temperature sensor and of a differential pressure sensor are fed to a control unit and the control unit starts the regeneration on the basis of the data by means of the comparison with characteristic diagrams.

Abstract: A bushing for a high-pressure discharge lamp, which is suitable for connecting an electrode in the interior of a ceramic discharge vessel to a supply lead in a gastight manner on the exterior of the discharge vessel, wherein the bushing is an electrically conductive ceramic composite consisting of a mixture of LaB6 and at least one second material from the group Al2O3, Dy2Al5O12, AlN, AlON and Dy2O3 is disclosed.