Abstract: The invention relates to a CW-Nd:YAG Laser soldering system for SMD-components by means of which the soldering may be shortened by the simultaneous feeding of solder, multiple radiation, ER-absorber, flux or reaction gas, and an optimizing of the Z-adjustment of the laser spot or spots and the laser power per soldering point can be controlled. Embodiments are explained and are illustrated schematically in the figures of the drawing.

Abstract: An ion-implanted JFET has a channel barrier region at the top gate surface self-aligned to the source and drain, thereby maintaining sufficient separation between the channel barrier and the source and drain for attaining a high source/drain breakdown voltage. After a top gate and an underlying channel layer are ion-implanted through a thin oxide layer, a first photoresist layer is formed and patterned to expose surface portions of the thin oxide layer where source, drain and channel barrier regions are to be formed. Through these apertures in the first photoresist mask, shallow high impurity concentration surface region are ion-implanted. A second photoresist layer is formed on the first photoresist layer, and patterned to completely expose the first and second apertures in the first photoresist layer and to remove material of the second photoresistor layer down to the surface of the the oxide layer, while masking the barrier region.

Abstract: A rolling mill for rolling metal strip moving in a horizontal rolling direction, has work rolls which engage the strip and are supported vertically by backup rolls through which drive is applied. The work rolls are supported in the horizontal rolling direction by support rollers contacting them at locations confined to intermediate regions between the work regions and bearings. The work rolls are shiftable in the horizontal rolling direction. To provide control of the horizontal forces during rolling, there are position control means for the support rollers operable to move and locate the support rollers so as to shift the work rolls to a predetermined location at which the vertical axial plane of the work rolls is offset in the horizontal rolling direction from the vertical axial plane of the backup rolls. The support rollers maintain the work rolls at the predetermined location during rolling.

Abstract: A link utilization control mechanism for a demand assignment satellite communication network employs a modified point-to-point communications protocol (X.25) in order to simulate point-to-point communication ports and thereby interface what is effectively a multidrop network with point-to-point landlink communication resources. Through an acknowledgement reservation mechanism the return link channel is subdivided into interleaved data and (preassigned) acknowledgement time slots, in order to substantially obviate overhead and throughput penalties encountered in the use of large data packets to transmit reduced size acknowledgement messages. In addition, the normal contention mode of operation of the return link is augmented with a data time slot reservation mechanism through which, during periods of increased message input density at a remote station, transmission throughput is facilitated, so that congestion at the remote station is reduced.

Abstract: An internal-combustion engine has a camshaft drive in which the outlet camshaft driven by the crankshaft drives the inlet camshaft via a chain. For the tensioning of the chain, two hydraulic pistons are pressed in opposite directions with respect to one another against the loose end and the load end of the interior side of the chain. For adjustment of the relative camshaft rotating position, the unit consisting of the hydraulic piston and the chain is shifted transversely to the camshafts so that the loose end is shortened and the load end is lengthened, or vice versa.

Abstract: An apparatus for determining crosswind effects on motor vehicles has arranged on the vehicle two differential pressure sensors which are each connected via two conduits to two openings at the outside of the vehicle and record the pressure difference which occurs between the connected conduits or the associated openings. From this, it is possible for the angle of incidence and the dynamic pressure of the crosswind to be determined by a computer.

Abstract: In the case of a spinning machine having a plurality of drafting units arranged next to one another which each comprise a stripping device, a cleaning device for the stripping devices is provided which can be moved along the spinning machine. The cleaning device, in each case, moves the stripping devices from an operating position into a cleaning position, in which the cleaning of the stripping device is carried out.

Abstract: In the case of a false-twisting nozzle for pneumatic false-twist spinning having a nozzle body formed of one or several segments, it is provided that, for the reduction of the cross-section of the outlet opening of the blow duct, at least one part of its interior wall is provided with a coating.

Abstract: A holding arrangement for a spindle of ring spinning or ring twisting machines. The holding arrangement includes a spindle housing which can be inserted in a receiving bore of a spindle rail and tightened by a ring flange and a nut screwed onto an external thread. The receiving bore includes a guide surface for guiding the spindle housing over only a portion of the length of the receiving bore while permitting tilting of the spindle housing in the receiving bore. Between the spindle rail and the ring flange and/or the nut, an adjusting ring is arranged which can be rotated when the nut is at least loosened. The adjusting ring is constructed as a non-uniform spacing element, by the rotating of which the relative position of the spindle housing and the spindle rail can be adjusted.

Abstract: A method and apparatus for vibration-filling electrodes in a paste bath. A holding tool connected to a vertical rotary shaft carries the electrode and, arranged above it, a vibration reflection body. The electrode and vibration reflection body are immersed in the paste bath, filling of the electrode is carried out, and the holding tool, electrode and reflection body are withdrawn from the paste path. Above the paste bath, the excess paste is spun off the electrode by rotating the vertical rotary shaft, the reflection body also being cleaned of the paste.

Abstract: In its rear area, a motor vehicle has a spoiler arrangement which can be moved by means of an adjusting device from a moved-in inoperative position into a moved-out operative position, and vice versa. In order to provide a rear-side spoiler arrangement which, while it has a simple construction, in the moved-out operative position, can be slid relatively far toward the rear and upward so that an enlarged inflow cross-section is achieved for the cooling of a rear-side air-cooled internal-combustion engine, it is provided that the spoiler arrangement comprises two parts which are hinged to one another. The part which is in the rear viewed in the driving direction is rotatably disposed on the adjacent body at its lower end, whereas the other forward part of the spoiler arrangement interacts with a guiding device arranged on the body side.

Abstract: An electric heating element for the elimination of condensation, frost or the like on windows of motor vehicles, preferably a rear window of a convertible top, is interconnected with an electric blower motor which includes a relay circuit. For safely operating the heating element, the heating element will only be operative when the blower motor is running. A first relay is used for the control of the blower motor and a second relay for the control of the heating element. The second relay, via a line of a control circuit, is connected to a connecting terminal of the blower motor.

Abstract: A spinning machine is disclosed which includes a plurality of spinning units which each spin two prestrengthened yarn components and guide them together to a double yarn. A movable servicing device is provided which can be applied to the individual spinning units and which, for feeding the double yarn to a spool tube inserted into a spinning unit wind-up device and driven to perform rotations, has a device that can be applied to the spool tube and is equipped with devices for the deflecting of a section of the double yarn into a direction extending approximately in parallel to the axis of the spool tube and for the transferring of the deflected section of the double yarn into the moving range of a driving device rotating together with the spool tube.

Abstract: In an arrangement for open-end rotor spinning having a fiber feeding duct leading from a feeding and opening device to a spinning rotor, it is provided that the fiber feeding duct, at a distance to its mouth, is provided with at least one bypass opening which has a smaller cross-section than the mouth of the fiber feeding duct and which is provided at a point of the fiber feeding duct which has a larger cross-section than the mouth.

Abstract: The invention relates to a line camera for imaging object strips on photosensitive detector lines, having an objective producing a line image of an object strip, having a ray deflecting system situated at the site of the line image by which the line image is divided into adjacent image sections, in such a manner that paths of the rays pertaining to adjacent image sections are deflected into respective different directions in space. One optical relay system respectively is optically arranged behind each image section for the imaging of the respective image section on its own respective detector line. The total number of optical relay systems is divided into at least two groups, each group being assigned to a different direction in space.

Abstract: A Sagnac-type fiber-optic gyroscope having a light source, a fiber coil consisting of an optical fiber, a receiver arrangement which are all connected with gates of a directional coupler, in which the light fed into the fiber coil interferes with the light emerging from the fiber coil in a coupling area and the rate of rotation of the fiber-optic gyroscope is determined from the interference signals. In order to achieve a working point which is situated in or close to the quadrature point, the directional coupler is developed as a 4.times.4 coupler between the arms of which fixed phase relations are provided in the coupling area.

Abstract: A water-activated, exothermic-chemical heater for packaging in a plastic heating bag is produced by methods which allow the heater material to be loosely placed in the heater while retaining the heating material uniformly distributed over the heater by cup-shaped or through cavities in a rigid member covered by a porous, wettable material on at least one side. Alternatively, the heater material is loosed placed in small bags made in a flexible porous material, with the necessary system rigidity provided by a cardboard or polymeric outer cover on one or both sides of the flexible porous material. Food-grade acid anhydride or free acid can be incorporated into the heater material to maintain proper pH. Flammability control can be achieved by blending a known fire retardant into the heater pad materials.

Abstract: Impulse noise suppression upstream of digital processing circuitry contains a sample and hold mechanism which samples the input signal and stores a plurality of sequential sample values respectively representative of the amplitude of the input signal at successive sample times. The contents of the sample and hold mechanism are compared with an input signal sample to determine whether or not the there are abnormal amplitude variations which potentially constitute impulse noise. In one embodiment the comparison is referenced to the average magnitude of the input signal. In another embodiment the input signal is coupled to a cascaded arrangement of sample and hold circuits which sample and store a plurality of sequential sample values. The time differentials between successive sampling times are such there is little likelihood of occurrences of impulse noise spikes during any two successive sample intervals.

Abstract: A chain tensioner for an internal-combustion engine comprises a hydraulic piston which is longitudinally guided in a housing bore and on which a tensioning shoe is placed on one side and which, from the direction of the other side, is pressed against the chain by a coil spring. For the damping of chain thrashing, the hydraulic piston is acted upon by hydraulic pressure in the tensioning direction as well as in the opposite direction.

Abstract: Brake-force control system (ABS) for vehicles, in particular motor vehicles, with separate control of the front wheel brakes and with joint or separate rear wheel brakes which can be switched over to "select high" control or individual control and/or with a limited-slip differential at the rear axle, the switchover of the rear wheel brakes and/or of the limited-slip differential being effected at different coefficients of friction (.mu.-split) with a specifiable rate of rise dependent on the travelling speed, and in which, in order to increase directional stability during a braking procedure, a switching device is provided which blocks a switchover of the rear wheel brakes and/or of the limited-slip differential until the travelling speed from the time of the detection of different coefficients of friction has decreased to a specified value, the rate of rise of the switchover being dependent at least one the duration of the reduction of the vehicle speed to the specified value.