Abstract: An air purification unit has a housing which has at least one inlet opening for delivering an air stream and at least one outlet opening for discharging the air stream delivered via the inlet opening. At least one air purification unit and at least one lighting unit are arranged in the housing, wherein the at least one air purification unit and the at least one lighting unit are arranged opposite one another in the housing. The at least one air purification unit has at least one photocatalytically active surface region. The air stream is guided in the housing at least partially along the at least one photocatalytically active surface region of the at least one air purification unit, wherein the surface region is at least partially coated with titanium dioxide or doped with titanium dioxide ions ions.

Abstract: A air vent with a housing has at least one opening for supplying an airflow and an opening for discharging the supplied airflow. The airflow can be supplied to the air vent from an air supply shaft or from an air supply line in a heating, ventilating, or air-conditioning systems for a motor vehicle. The housing of the air vent is adapted to be inserted into a wall opening or can be assembled behind such a wall opening and secured there via one of the at least two parts of the housing. In the non-use state of the air vent, one part of the housing lies in or over the other part of the housing.

Abstract: A device for controlling an air stream includes a control slat swivelly mounted in a housing and second slats extending orthogonally with respect to the control slat and swivelly mounted in the housing. The direction of the air stream exiting from the housing and the quantity of air streaming out can be set by the slats. An operating element is arranged orthogonally with respect to the longitudinal axis of the control slat to swivel and is coupled to a first bevel gear rotatably mounted on the bearing web and to the control slat. The first bevel gear is in engagement with a second bevel gear which is coupled to a lever arrangement which has at least one rotatably mounted first coupling member which is coupled to at least one first coupling rod and the at least one first coupling rod is coupled to the second slats.

Abstract: The present disclosure relates to a door having a door leaf with a plurality of door leaf sections which are connected in an articulated manner to one another by means of hinges, wherein a hinge has two hinge articulations of adjacent door leaf sections, at least one relatively long drive means which is connected to at least one door leaf section, and at least one guide means which is suitable for guiding the door leaf during its movement. In order to optimize the door in terms of its overall space, in particular in terms of width and depth and in so doing ensure a simple and cost-effective, but at the same time nevertheless reliable operation of the door, it is proposed to arrange the elongate drive means such that it is accommodated at least in certain portions in the door leaf section.

Abstract: An air purification unit has a housing which has at least one inlet opening for delivering an air stream and at least one outlet opening for discharging the air stream delivered via the inlet opening. At least one air purification unit and at least one lighting unit are arranged in the housing, wherein the at least one air purification unit and the at least one lighting unit are arranged opposite one another in the housing. The at least one air purification unit has at least one photocatalytically active surface region. The air stream is guided in the housing at least partially along the at least one photocatalytically active surface region of the at least one air purification unit, wherein the surface region is at least partially coated with titanium dioxide or doped with titanium dioxide ions ions.

Abstract: A air vent with a housing has at least one opening for supplying an airflow and an opening for discharging the supplied airflow. The airflow can be supplied to the air vent from an air supply shaft or from an air supply line in a heating, ventilating, or air-conditioning systems for a motor vehicle. The housing of the air vent is adapted to be inserted into a wall opening or can be assembled behind such a wall opening and secured there via one of the at least two parts of the housing. In the non-use state of the air vent, one part of the housing lies in or over the other part of the housing.

Abstract: A device for controlling an air stream includes a control slat swivelly mounted in a housing and second slats extending orthogonally with respect to the control slat and swivelly mounted in the housing. The direction of the air stream exiting from the housing and the quantity of air streaming out can be set by the slats. An operating element is arranged orthogonally with respect to the longitudinal axis of the control slat to swivel and is coupled to a first bevel gear rotatably mounted on the bearing web and to the control slat. The first bevel gear is in engagement with a second bevel gear which is coupled to a lever arrangement which has at least one rotatably mounted first coupling member which is coupled to at least one first coupling rod and the at least one first coupling rod is coupled to the second slats.

Abstract: An air vent of a ventilation and heating module for motor vehicles has at least horizontally extending air guide vanes which can be pivoted about a first axis and which are each coupled with a coupling element. At least one air guide vane is coupled via a coupling rod to the coupling element which is displaceable relative to the first axis in a displacement direction between a neutral position and a diffuse position of the air guide vanes. The coupling rod for each air guide vane is formed as a rocker, which is coupled at one end with an air guide vane and is pivotally coupled at the other end with the ventilation and module. Each rocker is coupled to the coupling element via a sliding block guide.

Abstract: An air vent of a ventilation and heating module for motor vehicles has at least horizontally extending air guide vanes which can be pivoted about a first axis and which are each coupled with a coupling element. At least one air guide vane is coupled via a coupling rod to the coupling element which is displaceable relative to the first axis in a displacement direction between a neutral position and a diffuse position of the air guide vanes. The coupling rod for each air guide vane is formed as a rocker, which is coupled at one end with an air guide vane and is pivotally coupled at the other end with the ventilation and module. Each rocker is coupled to the coupling element via a sliding block guide.

Abstract: The technical field of the invention is making a burner capable of using one or more fuels, optionally simultaneously, together with particular features for the gas feed ducts. Such a burner comprises at least four substantially concentric ducts for feeding fuel and primary combustion air, including a duct for axial air and a duct for rotary air disposed outside any fuel outlet opening, and a central stabilizer placed at the outlet of a central primary air delivery duct opening out through orifices of said stabilizer, which stabilizer projects radially relative to any opening of a tube placed inside said central primary air duct and inside which a fuel pipe opens out. According to the invention, said burner has at least one additional gas feed opening out into said stabilizer and disposed around said opening having any diameter lying between the tube within which the fuel pipe opens out and the outer tube defining the central primary air delivery duct.

Abstract: A method of manufacturing a layer of a superconducting high-T.sub.c -material. For this purpose, an appropriate target material is deposited on a predetermined substrate by a pulsed laser with a wavelength in the ultraviolet range and, by applying a heat treatment and an oxygen treatment, the desired superconducting metal-oxide phase is formed with an ordered crystal structure. The heat treatment and oxygen treatment are performed simultaneously during the vaporizing step, whereby a power density of the laser radiation of over 3 J/cm.sup.2 at the target material is provided, the pulse power of the laser is at least 1.5 J/pulse, the temperature of the substrate is raised to 600.degree. C. to 800.degree. C., and an oxygen atmosphere of between 0.02 mbar and 1 mbar is provided.

Abstract: A method of purifying waste water with treated aluminum oxide. The method comprises contacting the waste water with Al.sub.2 O.sub.3 which has been treated with ions which when incorporated in the crystal lattice of the Al.sub.2 O.sub.3 are capable of delaying crystallization of the gamma phase of the Al.sub.2 O.sub.3 or with the salts of said ions.In one embodiment, the Al.sub.2 O.sub.3 is artificially synthesized and the treatment comprises incorporating the ions, which may be either anions or cations, in the course of the synthesis.Alternatively, the Al.sub.2 O.sub.3 may be treated by subjecting the Al.sub.2 O.sub.3 to a surface treatment with ions capable of delaying crystallization of the gamma phase or the salts thereof.In yet another embodiment, the Al.sub.2 O.sub.3 may be doped with CO.sub.2.