Abstract: In a process for producing a workpiece from a chromium alloy, consisting of:  32-37 % by weight chromium,  28-36 % by weight nickel, max. 2 % by weight manganese, max. 0.5 % by weight silicon, max. 0.1 % by weight aluminum, max. 0.03 % by weight carbon, max. 0.025 % by weight phosphorus, max. 0.01 % by weight sulfur, max. 2 % by weight molybdenum, max. 1 % by weight copper, 0.3-0.7 % by weight nitrogen, remainder iron and production-related admixtures and impurities, the workpiece is cold worked and, by means of the cold working, is brought to a yield strength of at least 1000 MPa (Rp≧1000 MPa).

Abstract: An antenna includes antenna elements for transmitting and receiving signals. The antenna elements have a helical shape and are disposed parallel to one another. The antenna elements are individually connected in parallel to a common conductor surface and are capacitively coupled to a radio-frequency counterpoise via the common conductor surface.

Abstract: The invention relates to a curve path of a switch comprising switch tongues, a main track and a branch track, which curve path from the beginning of the curve path to the end of the curve path is comprised of several portions having different curvatures 1/R, R being the radius of curvature, wherein the coefficient of curvature &agr;=1/R/1/Rmin at the beginning of the curve path (&agr;A) and at the end of the curve path (&agr;E) is selected to be ≧0 and the point, or a region, in which &agr;=1 is located at a relative distance &ngr;=L/Lges≠0.5 from the beginning of the curve path, L being the distance from the beginning of the curve path and Lges being the length of the curve path.

Abstract: The invention relates to a martensitic-hardenable heat-treated steel, having the following composition (data in % by weight): 9 to 13% Cr, 0.001 to 0.25% Mn, 2 to 7% Ni, 0.001 to 8% Co, at least one of W and Mo in total between 0.5 and 4%, 0.5 to 0.8% V, at least one of Nb, Ta, Zr and Hf in total between 0.001 and 0.1%, 0.001 to 0.05% Ti, 0.001 to 0.15% Si, 0.01 to 0.1% C, 0.12 to 0.18% N, at most 0.025% P, at most 0.015% S, at most 0.01% Al, at most 0.0012% Sb, at most 0.007% Sn, at most 0.012% As, remainder iron and customary impurities, and the proviso that the ratio by weight of vanadium to nitrogen V/N lies in the range between 3.5 and 4.2. After solution annealing at 1050 to 1250° C., cooling to a temperature below 300° C., tempering treatment, partial or complete reaustenitization at 600 to 900° C., cooling to a temperature below 300° C. and annealing at a temperature from 550 to 650° C., it has a high resistance to heat combined, at the same time, with a high ductility.

Abstract: An antenna includes antenna elements for transmitting and receiving signals. The antenna elements have a helical shape and are disposed parallel to one another. The antenna elements are individually connected in parallel to a common conductor surface and are capacitively coupled to a radio-frequency counterpoise via the common conductor surface.

Abstract: A flat ceiling includes a reinforcement for resisting shear forces. The reinforcement is arranged in a bearing area for the flat ceiling and includes several dowel strips arranged in a substantially radial position with respect to a ceiling support. The reinforcement includes a dowel rail and several vertical, parallel dowels that are spaced from one another along the rail. Each dowel has a shank and an enlarged head disposed on at least an end of the shank located opposite to the rail. The shanks located adjacent to the support having a larger diameter than the shanks located farther from the support.

Abstract: To produce a thermally highly loaded casting (1, 14, 16, 17) of a thermal turbomachine which is produced using a known casting process, the casting mold is produced from a slurry using a wax model and a polymer foam which is fixed to the wax model or has been introduced into a cavity. In this way, during the casting process the liquid superalloy also penetrates into the open-cell structure of the casting mold, so that an integral cooling structure (7) is formed during the solidification of the casting (1, 14, 16, 17). A single-crystal or directionally solidified casting (1, 14, 16, 17) is advantageously produced. It is also conceivable to vary the cell size of the polymer foam, to produce cooling structure (7) and base material separately and to coat the cooling structure (7) with a ceramic protective layer (thermal barrier coating) (11).

Abstract: A rod anchor is threadedly connected to a tension rod. The rod anchor includes an anchor head having a threaded first bore hole formed therein, and a sealing nut attached to the anchor head in sealing relationship therewith. The sealing member forms a second bore hole axially aligned with the first bore hole, whereby a threaded end of the tension rod extends through the second bore hole and into threaded engagement with the first bore hole. The sealing nut includes sealing material forming a seal between the sealing nut and the tension rod.

Abstract: Disclosed are systems and methods for creating and distributing programming content carried by a digital streaming media to be a plurality of remote nodes located over a large geographic area to create customized broadcast quality programming at the remote nodes. At the remote nodes, a multi-window screen display simultaneously shows different programming including national programming and local programming content. The remote nodes utilize a remote channel origination device to assemble the customized programming at the remote location that can be controlled from a central location. An encapsulated IP and IP encryption system is used to transport the digital streaming media to the appropriate remote nodes. Also disclosed is a graphical user interface (“GUI”) providing a software control interface for creating and editing shows or programs that can be aired or played on a remote display device having a multi-window display.

Abstract: A studrail for shear reinforcement for reinforced concrete slabs is composed of a spacing rail (5) and a plurality of studs (6) which are arranged in parallel at a certain distance and provided with enlarged dish-like anchor heads (8) at both ends. The spacing rail (5), produced as a shaped sheet metal rail, grips one anchor head (8) of each stud with its two opposing folded flange edges (10).

Abstract: A fully martensitic quenching and tempering steel (AP) essentially consists of (measured in % by weight): 8 to 15% of Cr, up to 15% of Co, up to 4% of Mn, up to 4% of Ni, up to 8% of Mo, up to 6% of W, 0.5 to 1.5% of V, up to 0.15% of Nb, up to 0.04% of Ti, up to 0.4% of Ta, up to 0.02% of Zr, up to 0.02% of Hf, at most 50 ppm of B, up to 0.1% of C and 0.12-0.25% of N, the content of Mn+Ni being less than 4% and the content of Mo+W being less than 8%, the remainder being iron and usual impurities resulting from smelting.

Abstract: A guide blade for steam turbines, having in the blade interior a cavity (18) to which a vacuum is applied, is provided with an opening (3) for drawing off fluid in the region of the trailing blade edge (4). This opening is provided with a porous cover (7). The cover is dimensioned in such a way that, during operation, all its capillaries are filled with the fluid to be drawn off. It is anchored in the guide blade by a mechanical fastening element (20).The mechanical fastening element (20) is a spring-loaded quick-acting lock and comprises a bush (21) which fixes the cover in the blade opening (3) and projects with its cylindrical part (24) into the blade cavity (18), and a pin (25) which is axially displaceable in the interior of the bush, is equipped with spring means (26) and is provided at its end with a cap (28), which rests on the inner wall of the blade.

Abstract: The invention relates to a composition comprising a plastic and an additive, the additive being present in a dendrimer having functional end groups, said functional end groups being provided, at least in part, with a modifying group, which modifying group is compatible with the plastic. The additive remains trapped in the dendrimer and, owing to the presence of the modifying group on the dendrimer, cannot migrate or bleed from the plastic.

Abstract: A dowel member for reinforcing concrete structures includes a metal strip and a plurality of dowels projecting perpendicularly from the strip. Each dowel includes a dowel shank welded at one of its ends to the strip, and a dowel head disposed at the other of its ends. The dowel shank includes a center section having ribs on its outer periphery, and a pair of end sections having smooth cylindrical outer peripheries.

Abstract: A data medium for identifying objects, in particular gas cylinders, includes a data source and an energy source. Each data medium contains at least one RF signal reflector having a characteristic frequency which can be controlled by the data source. The waveform of the characteristic frequency containing the individual identification of the data medium is in coded form. A scanning device for interrogation of the data medium and a process for controlling the data medium are also provided.

Abstract: In a device for damping blade vibrations of an axial-flow turbomachine, the ends of the rotating blades form a seal toward the flow-limiting wall of a turbine casing. A ring of permanently magnetic material is attached to this flow-limiting wall of the turbine casing in the radial direction opposite the blade ends, which ring consists of at least one or more sectional rings of the same or different magnetic polarization. The blade ends are each provided with a cover plate which is made of a material which is a good electrical conductor.

Abstract: In a method for performing Boolean operations on geometric objects to generate a modified geometric object in a computer-aided design system, a face of a first object and a face of a second object are intersected to generate graph edges which form edges of the modified geometric object. Edges of the first object are intersected with surfaces of the second object to produce intersection points, and surfaces containing the faces of the two objects, respectively, are intersected with each other to produce intersection tracks. If there is an inconsistency between the intersection points and corresponding intersection tracks, i.e., if intersection points which should ideally lie on an intersection track are more than a resolution value (epsilon) apart, a perturbation step is applied to correct the spatial positions of inconsistent intersection points. The perturbation step comprises moving the inconsistent points along edges to a position where geometric consistency is established.

Abstract: A flow restriction detector for a nozzle assembly of a liquid dispensing machine is capable of detecting a blocked or partially blocked nozzle during the cleaning of the nozzle assembly. During nozzle cleaning, a return plate is attached to the nozzle plate of the nozzle assembly to receive a flow of pressurized fluid from the nozzles. Both the inlet and return fluid lines are provided with pressure sensors, and the return line has a constant back pressure applied to it so that the differential between the inlet and return line pressure sensors is in the range 5-10 psi. The pressure differential is monitored during cleaning and from one cleaning to the next for the purpose of identifying a blocked or partially blocked nozzle. A change of as little as 5% from the pressure differential value established for an unblocked system may indicate a partial blockage of a nozzle.

Abstract: A turbine blade including a blade foot and a blade. The blade foot is formed by a ductile material and the blade comprises a material which is brittle compared to the ductile material but resistant to high temperature. The two materials are alloys of different chemical compositions and are hot-compacted with the formation of a boundary layer joining the blade foot and blade to produce a bimetallic composite material. The blade foot predominantly comprises a titanium-base alloy and the blade comprises a gamma-titanium aluminide containing 0.5 to 8 atomic percent of a dopant. The turbine blade exhibits outstanding mechanical properties at high temperatures, good ductility at room temperature and a long service life.

Abstract: A high-nitrogen ferritic heat-resisting steel comprises, in weight percent, 0.01-0.30% C, 0.02-0.80% Si, 0.20-1.00% Mn, 8.00-13.00% Cr, 0.50-3.00% W, 0.005-1.00% Mo, 0.05-0.50% V, 0.02-0.12% Nb and 0.10-0.50% N and is controlled to include not more than 0.050% P, not more than 0.010% S and not more than 0.020% O, the balance being Fe and unavoidable impurities. The steel may optionally comprise (A) one or both of 0.01-1.00% Ta and 0.01-1.00% Hf and/or (B) one or both of 0.0005-0.10% Zr and 0.01-0.10% Ti. A method of producing the steel comprises melting and equilibrating the steel components in an atmosphere of a mixed gas of a prescribed nitrogen partial pressure or nitrogen gas and thereafter casting or solidifying the melt in an atmosphere controlled to have a nitrogen partial pressure of not less than 1.0 ata and a total pressure of not less than 4.0 ata, with the relationship between the partial pressure p and the total pressure P.sub.t being10.sup.P <P.sub.t.sup.0.37 +log.sub.10 6.