摘要:
The invention relates to a plastic screw plug (6) for attaching a rail to a sleeper, in particular concrete sleeper, having an essentially cylindrical plug body which has at the head end a stem region (7) which preferably adjoins a plug crown (8) toward the bottom, and in the continuation of which stem region (7) has an outer thread (9) with which it can be turned out of or into the sleeper, and is provided with an inner thread (10) underneath the stem region (7) in order to receive a sleeper screw. The intention is to improve such a plastic screw plug, in particular, with regard to its operating properties such as uniform application of force into the sleeper, simpler mounting and replaceability, reduction of the risk of fracturing, and additionally to permit it to be used in a variable way. For this purpose, the stem region (7) has on the inside, in the junction with the inner thread (10), a shoulder (13) which reduces the internal diameter over part of the length of the stem region (7) and extends in a spiral shape over at least part of the circumference.
摘要:
A rail mount secures a longitudinally extending rail having a foot to a sleeper of a track system. The mount has a rail base plate on the sleeper underneath the rail foot and unitarily formed with a pair of upwardly projecting holders transversely flanking the rail and each formed with at least one vertically throughgoing bore. Respective anchor bolts engaged vertically downward through the bores have heads bearing downward at least indirectly on the respective holders and are seated in the sleeper to hold the base plate down on the sleeper. Respective elastically deformable clips fitted to the holders below the respective anchor-bolt heads bear upwardly on the holders and downwardly on the rail foot to press the rail downwardly toward the sleeper.
摘要:
This specification describes the use of a composition comprising a nanoscale powder, a porous ceramic powder and a solvent for protecting a metallic surface against chemical attacks at high temperatures, in particular in a reducing and/or carburizing atmosphere, and also a corresponding process. Furthermore, this specification describes a plant part having a metallic surface which, in the operating state, is exposed to a reducing and/or carburizing atmosphere, wherein the surface is coated with a porous protective coating having a specific surface area of at least 20 m2/g.
摘要:
The invention relates to electronic devices whose electronic properties can surprisingly be improved to a significant degree by inserting at least one crosslinkable polymeric buffer layer, preferably a cationically crosslinkable polymeric buffer layer, between the conductive doped polymer and the organic semiconductor layer. Particularly good properties are obtained with a buffer layer in which crosslinking is thermally induced, i.e. by raising the temperature to 50 to 250° C. Alternatively, crosslinking can be radiation-induced by adding a photoacid. Moreover, such a buffer layer can be advantageously applied by means of printing techniques, especially inkjet printing, as the ideal temperature for the thermal treatment is independent of the glass transition temperature of the material. This avoids having to rely on material that has a low molecular weight, making it possible to apply the layer by means of printing techniques. The next layer (the organic semiconductor layer) can also be applied with the aid of different printing techniques, particularly inkjet printing, because the buffer layer is rendered insoluble by the crosslinking process, thus preventing the buffer layer from solubilizing thereafter.
摘要:
A screened housing (1) with press-fit pins (2) for electrical contacting on an electrical support component, in particular for automobile application, is composed of two housing sections (14,15) each including a housing base (3) each with two housing edges (4) with press-fit pins (2). Above all a screened housing is achieved by the invention with press-fit pins around all four circumferential sides which can be produced simply and economically in a follow-on composite tool. Such screened housings are particularly suitable for automobile applications for screening electrical components from incoming or emitting electromagnetic radiation.
摘要:
A program and method for developing a computer program usable on a plurality of operating systems. User interface objects and output control interfaces are written in a windowless manner. Operating system specific libraries are provided for rendering objects to canvas, reading a user input, or hosting an object window. Operating system functions are abstracted as attributes which define how text and drawings are rendered.
摘要:
The invention relates to novel copolymers comprising indenofluorene units and units of thiophene or its derivatives, to organic semiconductor (OSC) materials and organic electroluminescent materials comprising the copolymers, to the use of the copolymers and materials in electronic, electroluminescent or electrooptical devices, and to devices comprising the copolymers or materials
摘要:
The invention relates to nanoparticulate preparations containing at least one mixed metal oxide in the form of supramagnetic, nanoscale particles, methods for heating such a preparation, and methods for producing and dissolving adhesive compounds on the basis of said preparations.
摘要:
In the case of a hollow sleeper (1) for adjusting devices of switch blades of railway points, movable common crossings or cable crossings in any desired sections of track and points, formed as an upwardly open hollow sleeper profile with a planar sleeper underside (2), for fitting in a track skeleton, wherein the cross-sectional width and height are made to match a normal concrete, wooden or steel sleeper, the positional stability on ballast can be improved if the sleeper underside (2) of the hollow sleeper (1) is formed with at least one sunken, downwardly open chamber (5).