Abstract: The soldering arrangement has a lengthwise extending tunnel arrangement (1) with a soldering tunnel (3) through which a conveyor arrangement (10) for the work pieces extends. A soldering tunnel (3) which is inclined upwardly in the conveying direction is provided with a floor opening which is surrounded by a downwardly protruding sealing skirt (18) which is immersed in the molten liquid solder material (20) in a tub (19) below the soldering tunnel (3). The soldering nozzles (24, 25) arranged within the soldering tunnel (3) are supplied through riser channels within the sealing skirt (18). A protective gas conduit (41) for supplying nitrogen opens into the soldering tunnel (3). The soldering tunnel (3) and the conveyor path of the conveyor arrangement (10) extending within the soldering tunnel (3), are tiltable about a horizontal crosswise axis (47), whereby the inclination of the soldering tunnel (3) is adjustable.

Abstract: An air jet weaving loom equipped with a rod-type expander, has a weaving reed forming a weft thread insertion channel. The expander has an extension reaching toward the channel and preferably to about the center of the channel. The extension has a top surface which forms an elongation of a fabric supporting surface of the expander. This arrangement assures that the beat-up or interlacing point is always located about centrally in the weft thread insertion channel.

Abstract: The weft thread or weft threads in an air nozzle loom are plied into multi-strand weft threads directly in the loom. For this purpose one or several plying devices are arranged directly in the loom between a plurality of weft thread strand supply spools or cross-wound bobbins and the multi-ply weft thread insertion nozzle.

Abstract: A propulsion system for an aircraft capable of hypersonic flight combines a turbo-jet with a ramjet which are so arranged that the ramjet or jets are located directly adjacent to the aircraft body while the turbo-jet or jets are located away from the aircraft body so that the ramjet or jets is placed between the turbo-jets and the body. This arrangement makes the turbo-jets much more accessible for maintenance and exchange work. Both types of engines have a common air intake which is provided with flaps capable of guiding the body boundary layer through the ramjet when the latter is not in operation. When the ramjet is in operation, the air intake flaps form the air intake in such a way that boundary layer turbulent air is mixed with undisturbed incoming air for the ramjet while the air inflow to the turbo-jet is closed off altogether.

Abstract: An optical resonator for stabilizing a laser source is useful for homodyne and heterodyne applications. The structural resonator length is considerably reduced by placing a laser source, such as a semiconductor laser (10) in an opening of an optical grating, whereby the laser beam is directed onto a parabolic mirror (15), which reflects the laser beam onto the grating (11). Thus, a "folded" beam path results.

Abstract: An optical wide angle sensor head for directionally sensing optical radiation is made of a plurality of individual sensor optical elements. Each sensor optical element is arranged at an input end of its own fiber optical conductor and has its own light entrance, its own field of view and its own individual optical axis. Neighboring fields of view may overlap each other. The fiber optical conductors lead to a transducer for converting the individual light signals into respective electrical signals. The individual sensor optical elements are arranged on a common mounting member in a housing so that the individual optical axes pass through a common intersection in front of said light entrances. The mounting member is a flat plate or a concave plate having a concave curvature facing in the viewing direction, whereby a spherical mounting is avoided.

Abstract: A device for cooling synthetic material strands exiting from an extruder nozzle is used especially in the production of synthetic material granules. The hot strands must be cooled before they can be granulated. The cooling apparatus includes a guide element which is tiltable at its upper end about a horizontal axis arranged near the extruder nozzle. Thus, the guide element continuously receives and guides the synthetic material strands exiting from the extruder nozzle. The guide element may be tilted to a first position to guide scrap material, such as start-up strand material, into a scrap bin or may be tilted into a second position to guide usable strand material onto a further guide member for further processing. The lower end of the guide element carries a cutting arrangement for cutting off the synthetic material strands. The guide element carries a cooling arrangement which at least includes a cooling water pipe with spray nozzles.

Abstract: A sintered compact is obtained by sintering a mixture containing about 50 to 75 percent by volume of cubic boron nitride and about 25 to 50 percent of a binder under cBN-stable superhigh pressure conditions. The binder contains about 20 to 50 percent by weight of Al and one or more Ti compounds selected from the group consisting of TiN.sub.z, Ti(C,N).sub.z, TiC.sub.2, (Ti,M)C.sub.z, (Ti,M) (C,N).sub.z and (Ti,M)N.sub.z, wherein M indicates a transition metal of the group IVa, Va or VIa of the periodic table excepting Ti, and wherein z is within a range of 0.5.ltoreq.z.ltoreq.0.85. The atomic ratio of the content of Ti to that of the transition metal M in the binder is within the range of about2/1.ltoreq.Ti/M.ltoreq.97/3.The binder further contains tungsten or one or more tungsten compounds, whereby the total tungsten concentration in the binder is about 4 to 40 percent by weight.

Abstract: A rail launcher for suspending different types of flying bodies from a carrier such as a carrier aircraft, is constructed as an elongated, substantilly empty shell with cross-sectional configurations which vary along the length of the shell housing. Different types of rail pairs are provided along a downwardly facing side of the shell housing for accommodating different types of flying bodies of various lengths. All the components required for strapping, retaining, ignition, and control purposes are mounted in cells of the shell housing. Due to the use of modular housing mounting means, the same type of rail launcher can be adapted for attachment to different types of carrier aircraft.

Abstract: A CT computed tomograph comprises a scanner (51) which surrounds a living body of a person to be examined. Ultrashort light pulses of the ith wavelength are applied to the living body from a sample light transmitting path (80k) corresponding to the kth cell of this scanner and the sample light pulses received by a sample light receiving path (81l) corresponding to the lth cell and reference light pulses transmitted from a reference light path (79) and a delay light path (78) are converged by a converging lens (75). A CPU(64) counts photons outputted from a photomultiplier (22) based on the converged light pulses and calculates an average value by averaging a predetermined number of count values. A delay amount of the reference light pulses through the delay light path (78) is changed based on the average value and, based on delay time and an average value in the delay time, a photon count value S.sub.

Abstract: Form or pressed bodies, such as briquettes, are made of a mixture including at least two components. A first component is formed by at least one fine grained solid material which does not soften below 800.degree. C. A second component is formed by at least one binding agent that is pyrolytically decomposable. Each of the components has a mean mixing and deformation temperature such that the mean temperature of the first component is above a standard mixing and deforming temperature while the mean temperature of the second component is below the standard temperature. The standard temperature is such that a pyrolysis and degassing performed at the standard temperature does not destroy the binding ability of the second component. The second component constitutes about 15% by weight to about 50% by weight of the total mixture. Further, the second component is at least partly a liquified bituminous material having a mean CCT-value above 20%.

Abstract: A structural support or connecting member for window frames achieves an improved transmission of forces effective on a window frame, a simplified and less expensive manufacture and installation, an improved reliable sealing against infiltration of water and air, and an improved thermal insulation. In the system a window frame component to be connected to the connecting member has at least one lengthwise extending slot on its side facing support member. The support member or connecting member is assembled of two similar or mirror-symmetrical essentially flat sectional elements (9, 9') attached to each other in a mirror-symmetrical fashion to form two hollow chambers (7a, 8a) which extend in parallel to and at a spacing from each other, and which are open laterally through open lengthwise channels (6, 6').

Abstract: A wall having a surface in contact with a fluid, has a surface configuration which reduces drag if there is relative movement between the surface and the fluid. The wall is made of metal or of fiber composite material in such a way that sharp edged or fine ridges and grooves between the ridges are formed as integral surface components of the wall structure for simplifying the construction, reducing the weight, and increasing the useful life of structures having such walls.

Abstract: A baby carriage comprises a pair of push rods, a push rod connecting member for connecting upper end portions of the pair of push rods with each other, a pair of push rod locking members for fixing positions of the push rods, a pair of opened state locking members for fixing/maintaining the baby carriage in an opened state, a pair of engagement release members provided to be displaceable between lowermost, intermediate and uppermost positions along the push rods, a wire for connecting the pair of engagement release members with each other and an operating member connected to the wire at the central portion of the push rod connecting member. When the operating member is manually brought into a second position, the engagement release members are pulled up by the wire toward the intermediate positions, to push up the opened state locking members. Consequently, the baby carriage is released from the locked opened state.

Abstract: In a liver function testing apparatus, light sources (11, 12) expose vital tissue (15) to a first light of a wavelength absorbed by specific dye dosed into blood of the vital tissue, whereby the dye is to be taken in and removed by a liver and a second light of a wavelength not absorbed by the dye. Optical pulses obtained from the vital tissue are received by a light receiving element (13) providing an output signal which is sampled by an A-D converter (30) for converting the output signal into digital sampling signals. Variable components in the blood represented by the sampling signals are determined as coefficients of linear functions, to perform a biocalibration.

Abstract: An ejecting mechanism for an ammunition body is operated by pressurized gas from a high pressure bottle for pressurizing a double piston, which controls two ejectors through a hydraulic valve system. The pressurized gas is heated by a heater surrounding the high pressure bottle to keep the bottle and its content at a temperature that corresponds approximately to the highest outer temperature under which the ejector mechanism is expected to operate. Thus, the pressurized gas has the same energy content at all expected external operating temperatures. After an ammunition body has been ejected, the ejector pistons are pushed back again under an electrical control signal from a control which controls the valve system, whereby the hydraulic oil is pressed back into a hydraulic reservoir. The ejector pistons are of the stepped type to facilitate the intended operation.

Abstract: A pneumatic loom having at least two blow nozzles arranged in a bundle, is equipped with a weft thread insertion alignment device (2) located in a fixed position between the blow nozzles and the weft thread guide channel formed by the reed teeth. The alignment device (2) has an alignment slot having a funnel-shape receiving the weft threads at a wide inlet opening and leading the weft threads to a narrower outlet opening. The alignment slot extends along at least a portion of the path followed by the reed teeth on their beat-up motion. One end of the alignment slot is open toward the weft thread cutting scissors for exit of the weft threads. Weft threads waste is kept very low by the location of all relevant components close to each other. The effectiveness of the scissors is not impaired at all. The time available for the weft thread insertion is increased which means that the r.p.m. of the loom can be increased.

Abstract: A seat or chair especially for a flight attendant in an aircraft has a backrest section and a seat section hinged to each other and to a frame in such a way that the backrest section and the seat section can take up different angular positions relative to each other and relative to a vertical frame or to the horizontal. Thus, the chair can be folded to take up several positions including positions in which the seat section takes up lower or higher elevations above the floor. For this purpose the upper end of the back rest section is pivotally guided in a guide mechanism while the lower end of the backrest section is journalled to the rear portion of the seat section at a journal axis which simultaneously forms the journal axis of a support and guide member also hinged to the seat section. The support and guide member is hinged intermediate its ends to the frame through a fixed journal so that the rear edge of the support and guide member can engage a stop in the frame.