Abstract: With the help of a method and device for nozzle-jetting oxygen into a synthesis reactor, e.g. for oxy-dehydration, with largely axial flow of the gas mixture through a catalyst bed, it is intended to vastly improve the mixing-in and mixing-through of oxygen above the catalyst especially for oxy-dehydration process. This is achieved by feeding the oxygen to a ring distributor system arranged above the catalyst bed in pure form, as air or mixed with inert gas or water vapor and jetting the oxygen onto the catalyst surface through several exit openings in the ring distributor at an inclined angle deviating from the vertical.

Abstract: A method subsequently reinforces injection-molded transporters such as plastic pallets, which have support feet disposed on their underside, at least at the corners, and a groove for inserting a reinforcement profile between two support feet that stand diagonally opposite one another, and the two ends of the groove are formed by pockets shaped to correspond to the profile cross-section, disposed in the region of the support foot assigned to the groove end, in each instance. After completion of the pallet, the distance between the two pockets is increased via elastic deformation of the pallet. Afterwards, the reinforcement profile is laid into the groove, and one end of the profile is laid into one of the pockets. Thereafter, the deformation is canceled out and the pallet returns to the relaxed original state, and in this connection the other end of the reinforcement profile also dips into the corresponding pocket.

Abstract: Proposed is a piston (1) for an internal combustion engine having a closed annular duct (4) which is arranged close to the piston head (5) and radially at the outside, which annular duct (4) has, at the piston head side, an annular opening (21) which, in section, has the shape of a trapezium with limbs which taper conically in the direction away from the piston head, and which is closed off by an annular closure element (3) which, in section, has the same trapezium shape as the opening (21), with the closure element (3) being fastened in the opening (21) by means of friction welding.

Abstract: A controllable pressure reducing valve has a housing which includes an inner chamber extending in the direction of a longitudinal axis and an inlet opening and an outlet opening. The inlet opening and the outlet opening open into the inner chamber at an axial relative distance. The inner chamber includes between the mouths of the inlet opening and the outlet opening at least one annular wall having a cylindrical valve bore. An axially movable valve body which is arranged in the inner chamber, extends through the valve bore and has a piston-type portion guided in the valve bore and adapted to close the valve bore. The piston-type portion includes at least one control recess bounded by a control step which extends in axial direction and in circumferential direction and combines with an edge of the valve bore to form a controllable valve opening.

Abstract: A mobile diagnosis device comprised of an ECG unit (1) to record an ECG signal (55), with the ECG unit (1) being connected or connectible to two or more ECG electrodes (27, 28) to dissipate electrical signals from a patient's body, and comprised of a pulsoximetry unit (2) for simultaneous recording of a volume pulse signal (56), with the pulsoximetry unit (2) comprising at least one light source (17, 18) and at least one light sensor (20) for optical measurement of blood perfusion in the vascular system of a patient's body tissue, and comprised of a program-controlled evaluation unit (4) to evaluate the ECG signal (55) and the volume pulse signal (56).

Abstract: The invention relates to a method for the recognition of natural skin (5), wherein the skin surface (4) is illuminated at an irradiation point (1) with light from the visible spectrum or the adjacent spectrum, wherein that part of the light entering through the skin surface (4) at the irradiation point (1), scattered in the skin (5), and exiting from the skin surface (4) again, is detected at a detection point (9), using a detector (20), and wherein the signal determined by the detector (20) is passed to a comparator and compared with stored data. Furthermore, a device for carrying out the method is an object of the invention.

Abstract: A coating for permanent hydrophilization of surfaces and its use are provided. The coating is made of nano-scale particles having hydrophilic side chains, which can be sintered. The coating may be made of 10 to 90% inorganic structures, 5 to 70% hydrophilic side chains, and 0 to 50% organic side chains having functional groups.

Abstract: A controllable coolant pump for internal combustion engines driven by torque transmission elements has a pump housing, a driven shaft mounted in the pump housing, an impeller wheel arranged fixedly in terms of rotation on a free, flow-side end of the shaft, and a pressure-activated valve slide having an outer cylinder covering the outflow region of the impeller wheel in a variable manner. The valve slide is of annular configuration and is arranged on piston rods mounted displaceably in the pump housing. An annular piston mounted in an annular groove in the pump housing and movable in a defined manner in the annular groove via excess pressure or vacuum is arranged on the piston rods in a manner lying opposite the valve slide.

Abstract: The invention relates to a device for loading a patient connector for peritoneal dialysis with a closure plug. To permit an arbitrary number of disconnection/connection procedures with patient connectors that insert a sterile closure plug into the patient's abdominal connector during disconnection, a device for loading a patient connector for peritoneal dialysis with a closure plug is suggested, said device consisting of a housing containing a closure plug and of means for transferring the closure plug out of the device and into a patient connector. This permits loading, under sterile conditions, of a patient connector whose closure plug has already been used with a new closure plug. By loading a new closure plug, the push-button with which the closure plug is inserted is returned to its starting position, so that the patient connector is again available for a connection/disconnection procedure.

Abstract: A flared screw fitting has a pipe expanded in an end section into a tulip flare. A connecting piece has a conical stop face situated on an end section, which is joined in the direction of a forward front face of the connecting piece by a groove. An internal mantle surface of a union element contacts an external mantle surface of the tulip flare in an area whose smallest diameter is larger than the smallest diameter of the stop face of the connecting piece. The union element may be provided with an external threaded section which works together with an internal threaded section of the connecting piece.

Abstract: In an optical connector including a base housing, a cover housing, and a clamp fixing the cover housing to the base housing, the base housing is provided with a groove for positioning and holding an optical fiber of an optical cable, a first recessed portion continuously formed from the groove, and a second recessed portion continuously formed from the first recessed portion. The first and the second recessed portions have bottom portions different in level from each other to have a stepped portion formed therebetween. The cover housing has a first coating portion for covering the groove and a second coating portion for covering the first and the second recessed portions. The bottom portion of the second recessed portion and the second coating portion presses a coating member of the optical cable to clamp the optical cable.

Abstract: A multi-functional board-type gliding device, which has two end portions spaced at a distance apart from another in the direction of a longitudinal axis and is designed to be split in its longitudinal extension to form gliding part-devices . Several first and second coupling mechanisms are disposed in the direction of longitudinal extension in order to provide a mutual connection between the two gliding part-devices. The two mutually coupled gliding part-devices constitute a first operating mode and in the position separated from one another constitute a second operating mode. In the first operating mode in the coupled position, the two gliding part-devices form a first end portion which defines a first direction of use. In the second operating mode in the position separated from one another, the or the other end portions define a second direction of use opposite the first direction of use.

Abstract: A gearless speed reducer or increaser consists of an input shaft, an output shaft, and a motor connected to the input shaft. There is an external race connected to one of the shafts, and an internal race attached to the other shaft. Two ball bearings are disposed between the races. After the ball bearings have been inserted, the shafts are tilted relative to each other so that the balls become fixed in pockets created between the races and cannot slide within the races. Rotating one of the shafts thus rotates the other shaft, since the balls do not slip but only rotate between the races. The system acts as a speed reducer or increaser due to the different diameters of the inner and outer races. The system can be uncoupled by pivoting the shafts back into alignment so that the balls can slide freely within the races.

Abstract: The invention relates to a bearing element (1) with a metallic support body (2), a bearing metal layer (3) arranged over the top and a polymer layer (4) arranged on the top of the latter, whereby the polymer layer (4) consists of a polyimide resin, molybdenum sulphide (MoS2) and graphite. The proportion of the polyimide resin in the polymer layer (4) is selected from a range with a lower limit of 60% and an upper limit of 80%, the proportion of MoS2 is selected from a range with a lower limit of 15% and an upper limit of 25% and the proportion of graphite is selected from a range with a lower limit of 5% and an upper limit of 15%.

Abstract: A sales and presentation area has an essentially annular region rotatably mounted in the horizontal direction, divided into ring segments able to be moved individually in the vertical direction, and set into horizontal rotational movement via drives during use of the ring segments by customers. A changing section along the path of the moving annular region is kept inaccessible for customers from the exterior of the annular region. A lifting and lowering device is provided beneath the changing section. The ring segments slide over the lifting and lowering device in the course of the rotational movement of the annular region and rest on the lifting and lowering device during a standstill of the annular region for moving the ring segments in the vertical direction. The ring segments may be pushed in the radial direction into rooms below the sales and presentation area.

Abstract: The invention relates to a method for controlling and/or adjusting a welding process, using a melting welding wire (13) wherein after ignition of an electric arc, a welding process is carried out, the welding process being adjusted on the basis of several different welding parameters and being controlled or adjusted by a control device and/or welding current source. In order to determine the position of distance between the end of the welding wire (13) and the workpiece (16), which is to be processed, in a manner which is as accurate as possible, at least one mechanical adjustment process (41) is carried out during the welding process, enabling the position of said welding wire (13) being used as a sensor.

Abstract: An elastic shaft coupling has a drive-side interface and an output-side mechanical interface. Both interfaces are intended in each case for connecting the shaft coupling to an adjacent machine element. The shaft coupling has at least two elastic rubber elements which are connected behind one another between the drive-side and the output-side interfaces and the axial material thickness of which increases in each case at a growing radial spacing from the center axis of the shaft coupling. To reduce the amount of rubber of the shaft coupling with retention of its elastic properties, the respective rubber elements are of non-uniform configuration with regard to their torsional rigidity and to be precise are so non-uniform that the torsional rigidity of one of the two rubber elements is always at least one and a half times as great as the torsional rigidity of the other rubber element.

Abstract: In a space shuttle with a device for docking to a satellite, especially a communication or navigation satellite, at least two spreading elements in the form of lever spreaders are pivotally disposed at a retaining part of the docking device, which is concentric to a linkage. The lever spreaders have their proximal ends—relative to the space shuttle—provided with inward projections projecting inward towards the linkage, which inward projections engage in a recess formed in the linkage when the lever spreaders, spread apart to a defined opening angle by the cone of the linkage. When the linkage is retracted further, a pressure spring is compressed. At the same time, the lever spreader caught in the recess are retracted so far that the ends of the lever spreaders, spread apart in a defined manner, positively abut the inner wall of the nozzle neck.