Abstract: The present invention relates to a device for bleeding off and cooling hot air in an aircraft engine, including:at least one hot air take-off at the outlet of the compressors of the engine,a cold air take-off downstream of the fan of the engine,a precooling heat exchanger between said hot air and said cold air.According to the invention, said precooling heat exchanger (18) comprises at least one (12A) of said linking arms (12) between the engine body (2) and the fan shroud (9), the said linking arm or arms (12A) acting as the exchanger, exhibiting a hollow structure traversed longitudinally by at least some of the hot air bled off at the outlet of the low pressure and/or high pressure stages of the compressors (3) of the engine.

Abstract: A folding chair (1) which consists of a seat (5) foldable; two pairs of struts, front (2) and rear (3) which converge on and connect to the chair back (6) functioning as legs and being connected to each other respectively by a rear horizontal cross-bar (9) and a front horizontal cross-bar (8). The rear struts (3) are formed by two tubes (31, 32) slidable one inside the other, the internal tube (32) being fixed by at least one connector (7) to the top of the front strut (2) in correspondence with the chair back, the external tube (31) being fixed to its twin by said rear cross-bar (9). The partial extraction of the internal tube (32) from the external tube (31) occurring when the chair is lifted by the back (6) allows the rotation of the seat around the axis of said rear cross-bar (9).

Abstract: An endoscope system including an endoscope having an insertion section which extends from a proximal end to a distal end and is inserted into a cavity under inspection and an operation section connected to the proximal end of the insertion section, and a protection cover including an insertion section inserting channel which extends from a proximal end to a distal end and into which said insertion section of the endoscope is insertable and a conduit channel which extends from the proximal end to the distal end, the improvement being characterized in that a distal end portion of the insertion section has a non-circular cross section such as a semicircular or oval cross section and a proximal end portion of the insertion section has a substantially circular cross section. A distal end member of the insertion section inserting channel has an accommodating portion which is a corresponding non-circular cross section.

Abstract: A tapered plug valve having a plug provided with a separate drive shaft and formed with a channel not connected to the plug but connecting the ends thereof to enable pressure equalization. The channel may be formed by being directly drilled through the plug, or comprise a tube, secured in position by welding in a groove cast in the outer surface of the plug. A non return valve is positioned in the channel to limit pressure equalization from the wider end to the smaller end of the plug.

Abstract: A fire fighting method for extinguishing an elongated object includes spraying a first water-based spray (1a) and a second water-based spray (2a) with a first spray nozzle (1) and a second spray nozzle (2) to the immediate vicinity of the object in such a way that the first spray is directed towards the underpressure of air generated by the second spray nozzle. To enable efficient extinction with a small number of spray heads without causing high temperature gradients at various points on the surface of the object to be extinguished, the second spray (2a) is sprayed towards the underpressure of air generated by the first spray nozzle, and the first and the second spray are sprayed at least approximately in the direction of a longitudinal axis the of the elongated object in such a manner that the sprays are sprayed mainly in opposite directions and that the first and the second spray form a continuous spray path.

Abstract: The apparatus for drying an electrode plate for a battery has: a support drum of a cylindrical shape having a peripheral face on which a long sheet-like electrode plate for a battery is to be wound, and in which a large number of blow holes for allowing the electrode plate for a battery to run in a levitated manner are formed; external air blowing means which is adjacent to the support drum and which has a blowing port through which air is blown to a surface of the electrode plate for a battery wound on the support drum; and moving means for causing the electrode plate for a battery to run in a longitudinal direction of the electrode plate for a battery. The heat loss is small and the productivity is excellent, and a high-performance battery electrode plate which is free from a crack and a scratch and which has a stable quality can be produced.

Abstract: The invention provides a method for making a thin strap in a stable molten state in producing a plate group for a lead acid storage battery by integrally welding lugs of a plurality of plates of the same polarity by cast-on-strap process. According to the method, the strap is formed in the following manner. A molten lead is fed in a strap forming tool surrounded by an induction heating coil; control of the temperature of the molten lead and preheating of the tips of the plate lugs are carried out by the induction heating coil; the tips of the lugs is dipped in the molten lead and kept at a given temperature; and, thereafter, the mold is forcedly cooled to solidify the molten lead.

Abstract: An insulating plate element includes a heat insulating core layer (1) open to diffusion and which is coated on both sides with a diffusion-proof outer layer (4,5), the core layer (1) being divided into cells by means of diffusion-proof separating layers (3) that extend perpendicular to the diffusion-proof outer layers (4,5) and are connected thereto in a diffusion-proof manner.

Abstract: A method of extracting a color difference signal, a motion vector and motion compensator in HDTV, wherein motion vectors are multiplexed to one serial motion vector in a 4 step parallel process when compressing data, and in a motion compensation device for a memory address controller of HDTV, the first and second multiplexers are connected to data bus for horizontal address between a Raster format write and a memory of the address controller, and the third multiplexer is connected to a data bus for vertical address, and above the first to the third multiplexers selects addresses of color difference vertical/horizontal motion vector generator and luminance vertical/horizontal motion vector generator, and a motion compensator is structured to control motion compensation of the memory, and the output pixel from the memory is selected in the motion compensator by the motion pixel selector; motion vector, which is processed in 4 step parallel, is multiplexed to one serial motion vector, and the circuit is simply s

Abstract: A device for a braking and traction test of a wheel integral with a hub that is free to rotate, comprises a road-wheel, a crank integral with the hub and a connecting rod that causes the reciprocating movement of a piston sealingly sliding in a chamber of a cylinder containing air. The piston exerts on the wheel and on the tire a sinusoidal torque consisting in a braking torque during its compression stroke and in a traction torque during its expansion stroke. The device also comprises a first deformation transducer associated with the hub and a second and a third speed transducer associated with the hub and with the road-wheel, respectively.

Abstract: A document image processing system includes a menu display part determining the layout of menu data on the basis of the height Ha and the width Wa of the displayable area of the display unit when the display unit is rotated to its vertical position, the height Hb and the width Wb of the displayable area when the display unit is rotated to its horizontal position and the width Wc and the height Hc of a selection item display area displaying menu data, and displaying the menu on the basis of the layout thus determined, so that the menu can be displayed with a maximum size on the displayable area of the display unit regardless of the height and width of the displayable area changing depending on the direction of rotation of the display unit and without changing the size and arrangement of the menu data in the menu display area.

Abstract: In a method of optically determining the total hemoglobin concentration (tHb) in non-hemolyzed whole blood, using at least two wavelengths for measuring, a first wavelength of .lambda.<805 nm and a second wavelength of .lambda.>805 nm is employed, such the following is valid for the absorption coefficients of hemoglobin derivatives O.sub.2 Hb and RHb at the two measurement wavelengths .lambda..sub.1 and .lambda..sub.2 : .sigma.O(.lambda..sub.1).about..sigma.R(.lambda..sub.2) and .sigma.R(.lambda..sub.1).about..sigma.O(.lambda..sub.2). The sum of absorption values A.sub.1 and A.sub.2 measured at wavelengths .lambda..sub.1 and .lambda..sub.2 will be a quantity which is proportional to the total hemoglobin concentration tHb and independent of the oxygen saturation O.sub.2sat.

Abstract: An apparatus for attaching a plastic wrapping sheet to a composite product formed of a plastic core tube having a web-shaped material wrapped therearound, the plastic wrapping sheet surrounding the composite product so that an end portion extends beyond an end of the composite product, the apparatus including twin closing yokes which are movable towards one another to gather the end portion together, a cylindrical welding head for welding the gathered end portion to the end of the core tube, and a rotatable cutting bead for removing free excess plastic wrapping sheet from within the core tube.

Abstract: In an arc welding machine and a plasma cutting machine, by connecting the output of a second DC power supply unit to a circuit fed by a first power supply unit, a DC high voltage from the second DC power supply unit is applied, during start, across an electrode and a base metal which are not in contact with each other, so that radiation noise can be reduced considerably and leakage of high frequency power from an extension cable can be eliminated to attain steady arc start.

Abstract: An aluminium alloy plate is provided with a thickness of more than 2 inches, e.g. 6, 7 or 8 inches, and having an average logarithmic fatigue life of more than 100,000 cycles determined in accordance with ASTM test method E 466. The density of micropores with a size larger than 80 .mu.m in all locations in the midplane (T/2) midwidth position at head and tail ends of the finished plate as measured by Optical Microscopy of samples in any plane perpendicular to the midplane is less than 0.025 micropores per cm.sup.2. The plate may be formed by degassing of a melt to give a specified porosity of the cast ingot, and by hot rolling with at least one specified high reduction ratio pass.

Abstract: In a magnetic head including, a pair of magnetic cores, one of the magnetic cores including a first corner portion, a second corner portion and an end portion between the first and second corner portions, and another one of the magnetic cores including a third corner portion, a fourth corner portion and another end portion between the third and fourth corner portions, the first and third corner portions being opposite to each other, the second and fourth corner portions being opposite to each other, the end portion and the another end portion being opposite to each other, and high-saturation-magnetic-flux-density layers, one of the high-saturation-magnetic-flux-density layers covering the end portion and another one of the high-saturation-magnetic-flux-density layers covering the another end portion, wherein a thickness of the high-saturation-magnetic-flux-density layer on at least one of the first, second, third and fourth corner portions within an important area for preventing a false magnetic head is preve

Abstract: A cellular radio telephone system which halts transmission and reception of a data message in the event of detection of degradation of the circuit quality regardless of whether or not a hand-over command is generated. The system employs a decoder which compares the bit error rate of a data message signal on a radio circuit between a data terminal and a base station with a predetermined threshold, and a central processor unit which generates an instruction signal instructing to halt transmission of the data message from the data terminal when the bit error rate is larger than the threshold, and thereafter generates an instruction signal instructing to restart transmission of the data message from the data terminal when the bit error rate becomes smaller than the threshold.

Abstract: An apparatus for electrohydrodynamic augmentation of heat transfer with a working fluid comprising a heat transfer surface, said surface being formed with fins extending from a side of said surface in contact with the working fluid, said fins defining at least one channel having confronting sidewalls; an elongated, electrically conductive electrode disposed in the channel in relatively closely spaced relation between the sidewalls for carrying a current and producing an electric field for interacting with the working fluid to enhance heat exchange with the surface. At least one insulator disposed for engaging the channel in longitudinal spaced apart locations therealong.