Abstract: A method for manufacturing an electrodynamic transducer from a membrane system module and a magnet system module is disclosed. The membrane system module comprises an annular first chassis unit made by injection-molding and a diaphragm fixed thereon. A coil is fixed on a coil seat of the diaphragm. The magnet system module comprises a pole piece, a magnet and a yoke that each have a central hole, and a second chassis unit that is made by injection-molding and that fills the central holes in the pole piece, the magnet and the yoke. It surrounds the yoke at least partially, so that the pole piece, the magnet and the yoke are held. In the transducer, the membrane system module and the magnet system module are plugged together, wherein an annular recess on the lower side of the first chassis unit is arranged on a circumferential shoulder of the second chassis unit. This defines a position of the coil relative to the pole piece, to the magnet and to the yoke of the magnet system module.

Abstract: A method for manufacturing an electrodynamic transducer from a membrane system module and a magnet system module is disclosed. The membrane system module comprises an annular first chassis unit made by injection-molding and a diaphragm fixed thereon. A coil is fixed on a coil seat of the diaphragm. The magnet system module comprises a pole piece, a magnet and a yoke that each have a central hole, and a second chassis unit that is made by injection-molding and that fills the central holes in the pole piece, the magnet and the yoke. It surrounds the yoke at least partially, so that the pole piece, the magnet and the yoke are held. In the transducer, the membrane system module and the magnet system module are plugged together, wherein an annular recess on the lower side of the first chassis unit is arranged on a circumferential shoulder of the second chassis unit. This defines a position of the coil relative to the pole piece, to the magnet and to the yoke of the magnet system module.

Abstract: A microphone having a microphone capsule is provided. The microphone capsule has a diaphragm carrier, a diaphragm and an adhesive tape ring which is used to fasten the diaphragm to or in the diaphragm carrier. The microphone capsule is in the form of a dynamic sound transducer. A dynamic sound transducer for headphones, earphones or headsets is also provided. The sound transducer has a diaphragm carrier, a diaphragm and a moving coil which is coupled to the diaphragm. In a similar manner to the microphone capsule, the sound transducer has an adhesive tape ring between the diaphragm and the diaphragm carrier, which ring is used to fasten the diaphragm to the diaphragm carrier.

Abstract: A microphone having a microphone capsule (10) is provided. The microphone capsule (10) has a diaphragm carrier (40), a diaphragm (20) and an adhesive tape ring (30) which is used to fasten the diaphragm (20) to or in the diaphragm carrier (40). The microphone capsule (10) is in the form of a dynamic sound transducer. A dynamic sound transducer for headphones, earphones or headsets is also provided. The sound transducer has a diaphragm carrier (40), a diaphragm (20) and a moving coil (22) which is coupled to the diaphragm. In a similar manner to the microphone capsule, the sound transducer has an adhesive tape ring (30) between the diaphragm (20) and the diaphragm carrier, which ring is used to fasten the diaphragm (20) to the diaphragm carrier (40).

Abstract: The process is disclosed for the manufacture of briquettes in which an essentially solid fuel material such as hard coal, coke, soft coal, charcoal or more particularly, anthracite, and other coals of low volatility are mixed in the presence of polyvinyl alcohol and calcium oxide and/or magnesium oxide, as well as at least 1 percent by weight of water, and formed into briquettes. The calcium oxide is preferably caustic lime. The polyvinyl alcohol is preferably applied as an aqueous solution. The briquettes so formed are characterized by high initial crush resistance, i.e. the solidity shortly after the briquetting process, by high abrasion resistance, easy handling and, in the event that anthracite is employed, a carbon tar index of less than 50. The waste gases emitted during the burning of these briquettes have a distinctly reduced SO.sub.2 content.

Abstract: There is disclosed an improvement to the process for the de-inking of printed waste paper which comprises (1) treating the waste paper in a pulper at an alkaline pH with alkali silicate, an oxidatively active bleaching agent, one or more acid components selected from the group consisting of fatty acids and resinic acids containing more than 10 carbon atoms, and mixtures thereof, and a dispersing agent, and (2) separating the detached printing ink particles from the fiber suspension by either flotation, washing, or a combination thereof. The improvement comprises employing the acid and the dispersing agent in the form of an oil-in-water emulsion.

Abstract: Fuel briquettes containing binding agents and additives, obtained by briquetting 80-99% by weight of an essentially solid fuel, 0.1-19% by weight of a natural or synthetic binding agent and 0.1-10% of a cationic polyurethane obtained by a monomeric aliphatic dihydroxy compound, which has at one of its two atoms bonding the two dihydroxy groups an aliphatic residue with minimum 10 carbon atoms, being reacted with a polyisocyanate and an aliphatic monomeric diol containing tertiary nitrogen which in the obtaining of the cationic polyurethane is rearranged into its ammonium phase, or obtained by reacting the monomeric aliphatic dihydroxy compound with a polyisocyanate and an appropriate aliphatic monomeric diol in which the nitrogen is present already in its ammonium state. The briquets are obtained by commingling and forming into briquets, in a known manner, the mentioned components.

Abstract: Use of copolymers of ethylene oxide and/or propylene oxide with long-chain alkylene oxides having a minimum chain length of 6 carbon atoms as emollients in cosmetic liquid emulsions, creams, pastes and stick preparations.

Abstract: Fuel briquets containing binding agents and additives are obtained by briquetting of approximately 80 to 99% by weight of an essentially solid fuel, approximately 0.1 to 19% by weight of a natural or synthetic binding agent and approximately 0.1 to 10% by weight, calculated on a dry basis, of a cationic resin obtained by reacting polyamines with halohydrin.

Abstract: A process for the preparation of cationic paper sizing agents is disclosed. A copolymer of maleic anhydride and an .alpha.-olefin containing 10 to 26 carbon atoms is first reacted with from 0.1 to 1.0 mol, per mol of anhydride, of a monoprimary/monotertiary alkylene diamine, subsequently reacting the copolymer with more than 0.2 and less than 1.5 mols, per mol of anhydride, of a low-molecular weight polyamine, with the proviso that the total amount of amine reacted be less than 2.0 mols per mol of anhydride, and converting the resultant product to a salt.