Abstract:
A bearing arrangement for a shaft of an electric auxiliary motor for vehicles, wherein the shaft with a shaft end reaches through one of a housing opening and a through opening into a chamber formed in a gearbox housing, wherein the shaft is supported in a bearing bush which lies against a surface on the abutment side surrounding the through opening and wherein the bearing bush is fixed in the chamber by a filling body made of a hardened filling mass scaling the chamber from the outside inwards, wherein the chamber is equipped with at least one of a fixing surface and a sealing surface surrounding the axis of the shaft, against which the filling body is pressed as a result of shrinkage of the hardened filling mass upon hardening.
Abstract:
A switching contact is disclosed for vacuum interrupters, having a radial or axial magnetic field. In at least one embodiment, the switching contact includes a switching contact carrier and a contact plate. The switching contact carrier contains a coil for generating a magnetic field, said coil being formed by slitting the wall of a pot-like contact carrier. The outer diameter of the slitted wall of the pot-like carrier is smaller than the diameter of the contact plate located thereon. The switching contact is also provided with an annular supporting body which is inserted between the contact plate and the base of the contact carrier and surrounds the contact carrier at least in the slitted region. A vacuum gap is provided between the outer supporting body and the slitted wall.
Abstract:
For a low-pressure gas discharge switch, at least two main electrodes are arranged at least a distance d from each other, the electrodes in an arcing chamber forming a cathode and an anode of a discharge path for the low-pressure gas discharge. The gas discharge is triggered by increasing the electron density in a cathode cavity, at least the cathode in its disk-shaped area having at least one aperture, the cathode and anode apertures preferably being opposite and aligned with each other, for triggering the discharge. An arrangement generating a magnetic field superimposed on the discharge between the main electrodes (1, 1a, 2, 2a) are assigned to the main electrodes (1, 1a, 2, 2a), with which either a predominantly parallel magnetic field is generated or a predominantly perpendicular one, with regard to the direction of current in the discharge. The magnetic field generator may include slot arrangements (11, 11′, 21, 21′) in hollow cylinders (1b, 2b), which are part of the anode (1) and cathode (2) configured as hollow electrodes, or may be realized in the associated current supply lines.
Abstract:
A titanium dioxide powder/iron oxide mixed oxide which is prepared from FeCl3 and TiCl4 using a pyrogenic, especially a flame hydrolytic method. A further possibility is to coat pyrogenically, especially flame hydrolytically prepared titanium dioxide with iron oxide in aqueous dispersion. Both of these titanium dioxide powders which contain iron oxide may be used as a UV absorber in sunscreens.
Abstract:
An apparatus produces intense pressure waves as shock waves for technical and preferably medical applications, especially for lithotripsy and/or pain therapy. Acoustic waves of high energy density are produced through the use of pressure pulsations. The pressure waves are produced by briefly heating a conductive electrolyte, whereby electric energy is converted directly and very largely without losses with the aid of an electric pulse for the purpose of heating up the electrolyte. The apparatus includes two electrodes which enclose the electrolyte and are controlled by a power pulse generator for outputting sound waves into a sound propagation medium.
Abstract:
The invention relates to pigments consisting of substantially spherical particles with a mean particle diameter of less than 10 .mu.m, on the basis of an oxidic or silicate substrate material with noble metal distributed extremely finely on and/or in the particles. Preferred pigments are purple-colored and are based on an oxide from the series SiO.sub.2, SnO.sub.2 and ZrO.sub.2 and gold as noble metal. The pigments are suitable for the production of ceramic decorations and for the dyeing of plastics, synthetic films and fibers as well as lacquers. Exceptional application properties are obtained by virtue of the spherical shape. The pigments are obtainable by a spray-pyrolysis process in which an aerosol consisting of a solution of at least one noble metal compound and an oxide- or silicate-forming precursor is subjected to pyrolysis; the pigment is separated from the pyrolysis gas.
Abstract:
Such switches have current connections for contacts. One contact may be a fixed contact and the other contact may be a mobile contact. A drive opens the mobile contact when a predetermined electric current intensity is exceeded. The electric drive is a thermoelectric drive. For that purpose, the contacts (2,3) are arranged in a closed housing (1) made of an insulating material and a disk-shaped resistive member (4) is arranged between the contacts (2,3). A switch of this type may also be advantageously designed as a bistable limiter.
Abstract:
Flame-hydrolytically produced titanium dioxide mixed oxide having a BET surface of 10 to 150 m.sup.2 /g and 1 to 30% by weight aluminum oxide or 1 to 30% by weight silicon dioxide is produced by evaporating aluminum chloride or silicon tetrachloride, transferring the evaporated aluminum chloride or silicon tetrachloride, together with an inert gas, into the mixing chamber of a burner, mixing them with hydrogen, air and gaseous titanium tetrachloride, burning the resulting 4-component mixture in the reaction chamber of the burner, and separating the titanium dioxide mixed oxide from the gaseous reaction products.
Abstract:
Silicon-aluminum mixed oxide powder which is flamehydrolytically produced and has a composition of 65 to 85% by weight Al.sub.2 O.sub.3, remainder SiO.sub.2 and an amorphous structure, in which each primary particle contains components of SiO.sub.2 and of Al.sub.2 O.sub.3, the primary particles are between 7 and 80 nm, preferably 10 and 40 nm in size and the specific surface of the powder is between 20 and 200 m.sup.2 /g. The powder is used for the production of mullite and sintered compacts manufactured from it.
Abstract translation:硅铝混合氧化物粉末,它是以水解方式制备的,其组成为65至85重量%的Al 2 O 3,余量为SiO 2和无定形结构,其中,每个一次粒子含有SiO 2和Al 2 O 3的成分,初级粒子在7〜 80nm,优选10和40nm,粉末的比表面积为20-200m2 / g。 该粉末用于生产由其制造的莫来石和烧结体。