Abstract: An extruded hollow section that can be fabricated in fewer production man-hours, and furthermore, is stable in quality. With the extruded hollow section, parallel parts each having a width in one direction within a section vertical to the direction of extrusion, being constant along the direction of extrusion, are integrally formed with tilt parts each having a width in the one direction, varying along the direction of the extrusion, wherein the parallel parts are integrally formed with the tilt parts. The extruded hollow section is made of a light metal.

Abstract: A method and a device are disclosed for changing the color of a metal surface in a given part of the electromagnetic spectrum. It is achieved by creating a surface relief as an array of raised or indented repeated elements without breaking the continuity of the metal surface. The characteristic size of the elements is smaller than the shortest wavelength in that part of spectrum. In particular, the method uses excitation of surface plasmons on the metal surface. The relief may be optionally covered by a layer of dielectric or semiconductor for further fixed or externally controlled change of the metal surface color. The device may be used to detect the intensity or color or phase of incident light. It may be used to detect another substance in proximity of the surface by changing the color or phase or intensity of reflected light.

Abstract: A method for preparing a surface, previously roughed in a mechanical manner and comprising sharp-edged ridges and recesses, on metal workpieces for applying a thermally sprayed layer. The roughened layer is machined by hammer or percussion brushes with a rapidly rotating hammer or percussion brush having a plurality of resilient percussion wires that are oriented in a radially outward manner, such that the edges of the ridges are broken in order to improve the adhesion of the subsequently applied thermally sprayed layer or are at least curved forming rear sections. The brush rotates at a high rotational speed of approximately 3000-6000 rotations per minute and is displaced laterally with its rotational axis being at a parallel distance that remains constant in relation to the surface of the workpiece such that percussion wires distributed on the periphery of the brush impact with the ends thereof of the surface areas adjacent to the workpiece at an oblique angle that is less than 90° in rapid succession.

Abstract: A method and apparatus for producing a sandwich structure that is lightweight and many times stiffer than regular sheet metal, and which is easily formable into curved structures as well as structures having compound curves. In one embodiment, a formed core includes a plurality of cells comprising alternating front and rear projections extending outwardly in front of and behind a median plane, with each projection having a bonding surface area or land configured to be bonded with corresponding external sheets on both sides of the formed core. A plurality of micro-abrasions or indentations are formed on the bonding lands, allowing stronger bonding joints to be formed between the core and the external sheets by facilitating improved capillary action by the core during the bonding process.

Abstract: A rubberized fabric for a tire belt includes an elastomeric material and at least one reinforcing metal strap in the elastomeric material. The at least one reinforcing metal strap is made of a shape-memory material. The at least one reinforcing metal strap is oriented at about 0° to an equatorial plane of the tire. The at least one reinforcing metal strap has a width of no less than about 1 mm. The at least one reinforcing metal strap has a first thickness of no greater than about 0.1 mm. The at least one reinforcing metal strap may have coils disposed side-by-side and axially displaced from one another.

Abstract: A method of production and/or processing of contact elements for electrical plug connectors is provided. The contact elements are fixed to a transport strip during the production and/or processing process. This transport strip is reduced in its material thickness after at least a portion of the production and/or processing process by deformation between the fixed positions of adjacent contact elements on the strip, so that the spacing between the fixed positions of adjacent contact elements is increased.

Abstract: A pharmaceutical composition containing an extract from inflammatory tissue inoculated with vaccinia virus may be used to suppress the death of cells caused by endotoxin, and suppress excessive production of nitrogen monoxide induced by endotoxin. The extract may also be used to relieve hypotension induced by endotoxin. In sepsis and other serious bacterial infectious diseases, endotoxin (an intracellular toxin) is produced and a shock symptom is induced by its action. The extract, having an excellent inhibitory action toward endotoxin-induced toxicity, is quite useful for the treatment or the prevention of endotoxin-induced shock symptoms, sepsis and various symptoms accompanied thereby. In addition, the extract has an inhibitory action towards abnormal nitrogen monoxide production during the diseased state and, therefore, it is also useful as a therapeutic and preventive agent for diseases wherein an excessive nitrogen monoxide production occurs, such as acute hypotension.

Abstract: An improved reinforcing fiber for concrete is formed with two types of anchors positioned adjacent to each axial end of the fiber. A drag anchor which frictionally resist being pulled from the concrete without fiber breakage and a dead anchor between the drag anchor and adjacent axial end of the fiber, the dead end engages the concrete to develop stresses at a weakened point in the fiber formed between the drag anchor and its adjacent dead anchor to break the fiber or deform the dead anchor before maximum tensile strength of the fiber is reached so that the dead anchor functions to maximize the load carrying capacity while at the same time protecting against fiber rupture and the drag anchor continues to function after release of the weak point of the fiber.

Abstract: A method of producing an elongated member having a main body portion and terminal portions extending form ends thereof includes bending an elongated strip between circumferential faces of first forming rolls and second forming rolls having parallel central rotational axes. The circumferential faces of the first forming rolls include annular main body portion bending sections that form the main body portion in the strip and adjacent transition portion bending sections that form adjacent transition portions in the strip, thereby forming an intermediate stage elongated member. The transition portions have a cross-section that changes continuously from the annular cross-section of the main body portion to a different cross-section of the terminal portions.

Abstract: Reinforcement fiber made of metal for the reinforcement of concrete, consisting of a wire piece, which is deformed near both ends over a certain distance. The wire piece, is undeformed between the ends and the deformed part. The two extremities of the reinforcement fiber are not deformed over a distance of 1 to 5 mm. The reinforcement fiber is provided with a profiling consisting of a large number of small notches or grooves. The grooves are provided at an angle to the longitudinal axis of the reinforcement fiber. The length of the reinforcement fiber lies between 10 and 70 mm, and the fibers have a length-thickness ratio of between 40 and 70. The ends of the reinforcement fiber are bevelled at an angle of approximately 45 degrees and are slightly flattened. The transition from the deformed part to the undeformed part is provided with a slight bulge.

Abstract: A concrete reinforcing metal fiber capable of being easily and uniformly dispersed in concrete. The metal fiber integrally includes a longitudinal strength body which bears tensile force that works thereon, and two rows of intermittent fins extending on the opposite sides of the strength body. The flatness ratio, namely, the ratio of the maximum width of the metal fiber to the maximum thickness of the same, of the metal fiber is in the range of 2.5 to 6.

Abstract: A concrete reinforcing steel fiber has an alternate arrangement of basic portions corresponding to the body of the steel fiber material, and section-shaped portions formed by pressing the steel fiber material between a grooved forming roller and a toothed forming roller. Each section-shaped portion has a flat upper surface, lateral projections and a round bottom. The pressure bearing area b of the section-shaped portion, namely, the sum of the cross-sectional area of the lateral projections and the area of the end surface of the basic portion contiguous with the section-shaped portion, is in the range of 0.2A to 0.5A (A=cross-sectional area of the basic portion). The total pressure bearing area B of the steel fiber is in the range of 3A and 8A, and also in the range of 0.02T and 0.08T (T=tensile strength of the steel fiber).

Abstract: In a method of making a polishing element a photoresist film 2 is first deposited on a surface of metal stock 1. A photomask 3 is then used to selectively cover portions of the deposited photoresist film 2. Thereafter, portions of the photoresist film 2 which are not covered by the photomask 3 are removed in order to leave exposed patterned portions 5 of the metal stock surface. Gulf-shaped recesses 6 are then etched into the exposed portions of the metal stock surface. The formation of gulf-shaped recesses 6 results from the application of a etchant while the metal stock 1 and the etchant are in physical motion relative to one another. After etching, remaining portions of the photoresist film 2 are removed from the metal stock. A polishing element 10 comprising cutting teeth 11 having acute cutting action angles results.

Abstract: An improved process is disclosed for splicing metal shafts, in which a pair of shafts (10, 12 or 44, 46) having transverse end surfaces (30, 32 or 54, 56) preferably substantially normal to the axes of the shafts, are positioned coaxially with an insert (34, 48) positioned between and abutted to the end surfaces. The insert is tapered or wedge-shaped at either end to define transverse contact surfaces (18) which abut the end surfaces of the shafts. The angle (.beta.) of the taper on the insert permits insertion of a consumable arc welding electrode (20) into the convergent space defined between the end surfaces of the shafts and the tapered surfaces of the insert and is large enough to allow the arc welding electrode to be positioned at locations not only sufficiently spaced from both the tapered surfaces and the end surfaces but also sufficiently close to the area of abutment between the contact and end surfaces, to ensure proper welding penetration into the base metals.

Abstract: A flexible string of interconnected sheet metal clips of the type which are adapted to hold the end bars of a sinuous or zigzag cushion-supporting springs on the wooden frame of an article of furniture. The clips are disposed in side-by-side relationship and adjacent clips in the string are connected together by a thin flexible web, the thickness of which is reduced by a swaging operation, and which serves to maintain such clips slightly spaced apart.