Abstract: The invention concerns an electrical plug connector with a shielding device (8) which comprises a housing (1) and a plug-in projection (2) mold onto the housing (1) which includes along the plugging-in direction of the plug connector, contact elements (5) for engaging with corresponding counterparts (32) in a connector part (30) and at least one guide element (7) for engaging with a complementary piece (31), where the shielding device (8) comprises an electrically conductive ring (10) which surrounds the contact elements (5) and contact studs (11) for conducting away electrical charges on the connector part (30).

Abstract: The invention concerns an electrical plug connector with a shielding device (8) which comprises a housing (1) and a plug-in projection (2) mold onto the housing (1) which comprises along the plugging-in direction of the plug connector, contact elements (5) for engaging with corresponding counterparts (32) in a connector part (30) and at least one guide element (7) for engaging with a complementary piece (31), where the shielding device (8) comprises an electrically conductive ring (10) which surrounds the contact elements (5) and contact studs (11) for conducting away electrical charges on the connector part (30).

Abstract: The invention specifies a shorting contact support for an igniter receptacle (70), comprising a shorting bridge (19) having at least two resilient contact elements (20, 21) for electrically connecting contact pins on the igniter (2) and having at least one first metal plate (23), and a support housing (9) having an annular base (3) on which two diametrically opposite wings (4, 5) are integrally formed parallel to the insertion direction, so that a plug-in projection (13) can be inserted between said wings. The shorting bridge (19) has a second metal plate (24), the two metal plates (23, 24) being essentially parallel opposite one another and being connected to one another in view of at least one ring segment (37, 38). At least one of the plates (23) has at least one contact tongue (22) so that it is electrically connected to a screening or earth connection (68) situated on the plug when the plug is inserted into the ignition receptacle (70).

Abstract: Process for the production of tantalum-niobium concentrates from low-tantalum, high-niobium raw materials with an Nb.sub.2 O.sub.5 /Ta.sub.2 O.sub.5 ratio of 5 to 15 in a pyrometallurgical concentration process by smelting with carbon-containing reducing agents, reductions and resmelting.

Abstract: A dental prosthesis with a metal body which has an internal cavity open at one end and which is provided with a facing of plastic, ceramic or the like is to be comparatively light and is to be of adequate strength, as well as being able to be used as posts for bridge constructions.For that purpose it is proposed that the metal body is formed as a carrier element (12) from a filigree grid or lattice having meshes, and is fixedly connected to the facing which surrounds same as a casing layer (10). In addition, two carrier elements (12) formed from the grid or lattice are to be connected by at least one bar (22) and supplemented by a grid or lattice portion (23) cast thereon, to form a bridge construction (21).

Abstract: The invention provides a process for the manufacture of a polyethylene wax micro-powder, 99 weight % of which has a grain size of less than 15 microns, for the dulling of varnishes. Such a micro-powder generally cannot be obtained without difficulty by grinding; in accordance with the invention this is possible, however, by grinding the polyethylene wax together with an amide wax.

Abstract: The invention relates to a process for the temporary protection of metal and lacquered surfaces comprising applying thereto an aqueous emulsion containing a hydrocarbon wax or the oxidate thereof, optionally waxes based on montan wax and/or natural waxes, as well as a basic saponifying agent and emulsifiers. The wax films resulting from the emulsions are waterproof, however, they are easily removable--even after aging--without the use of a solvent being necessary, merely by a treatment with a water-steam mixture.

Abstract: For coating carbon paper waxes are required which are not only capable to disperse high amounts of carbon black but also have good oil binding properties. For this purpose natural waxes carrying ester groups are treated with oxygen until they have a high carbon black absorption. The waxes are oxidized in the melt. They can also be oxidized in admixture with hydrocarbon waxes or the derivatives thereof.

Abstract: A coating composition essentially consisting of a polypropylene having a crystalline fraction of from 20 to 60 % by weight and a melt viscosity of from 5,000 to 200,00 cP at 170.degree. C is applicable by a roll coater. The coatings have a high elasticity, toughness and good adherence on the support and are sealable.