Abstract: Steel alloys include no more than 1.00 percent by weight of silicon, 18.0 to 22.0 percent by weight of chromium, 1.80 to 2.50 percent by weight of molybdenum, 0.01 to 0.10 percent by weight of nitrogen, no more than 0.01 percent by weight of titanium, no more than 0.01 percent by weight of niobium, no more than 0.01 percent by weight of aluminum, the remainder being essentially iron. The alloys are ferritic but polishable and have mechanical properties that nearly match those of the standard steel alloy no. 1.4521. The steel alloys are processed into watch parts such as housing bottoms, housing shells, and faces, among others, such that watch housings produced from the alloys magnetically shield the clockwork.

Abstract: A flow-through DC voltage changer having an electronic switch in the primary-side main circuit and having a further output circuit that absorbs energy in the blocking phase of the flow-through DC voltage changer. An arrangement having two diodes and two capacitors is connected to the secondary winding of the transformer for supplying an electronic circuit with an auxiliary voltage that is higher compared to the output voltage. The flow-through DC voltage changer is especially suitable for supplying ASICs.

Abstract: Circuit arrangement for generating a constant output voltage (U2), having a decoupling diode (17) of the output side and having an arrangement (20) for actual value formation that is connected to the output of the circuit arrangement. In order, given high precision of the output voltage (U2), to prevent voltages, that occur at the user (26) and are applied to the user (26) from elsewhere, from causing the regulator to inhibit the circuit arrangement, the arrangement (20) for actual value formation contains two transistor stages with complementary transistors (15, 11). The circuit arrangement is especially suited for redundant feed of equipment of electrical message transmission technology.

Abstract: A circuit arrangement for generating a constant output voltage has a decoupling diode at the output side and has a circuit for actual value formation that is connected to the output of the circuit arrangement. In order, given high precision of the output voltage, to prevent voltages appearing at the user and applied in some other way to the user from causing the regulator to inhibit the circuit arrangement, a reference potential terminal of the regulator lies at one side of the decoupling diode and the voltage divider lies at the other side of the decoupling diode. The circuit arrangement is particularly suited for redundant feed of equipment in electrical communications transmission technology.

Abstract: A switching regulator having a power switch arranged in a main circuit of the primary side in series with a current-measuring resistor and having a delta voltage source in series with the current-measuring resistor. The delta voltage source can be realized in a simple manner in that the current-measuring resistor is arranged in the emitter circuit of an auxiliary transistor whose base is connected to a periodically chargeable and dischargeable capacitor. A regulation of at least one output voltage is preferably provided by underlying voltage regulation in combination with a current-dependent inductance. The switching regulator can be advantageously employed as a feeding apparatus in electrical communications transmission technology.

Abstract: In a process for cold forming unalloyed titanium high strength and ductility, in particular high bendability, are obtained if the material is subjected to intermediate annealing at a temperature of up to 500.degree. C.

Abstract: A vehicle wheel that includes a valve which has a check device, with the wheel being intended for use with a pneumatic tire that even when operating as a tire which is flat or has otherwise lost pressure permits great distances to be covered at a reduced speed. To prevent misuse of the tire, in other words reinflation of a tire subsequent to flat-tire operation and before the tire has been checked for leaks, the valve is provided with a mechanism that prevents such misuse. This mechanism is pneumatically disposed in series with the check device and is installed in an open position and in such a way that it changes over into a closed position upon commencement of a flat-tire operation, with a special tool and/or special replacement parts being required in order to reestablish the open position of the mechanism.

Abstract: An illuminated sign. The illuminated sign comprises a cabinet with internal illumination, a diffusion plate, a transparent plate, and a retention strip with an associated camming strip.The cabinet is provided with an internally facing, circumferential support flange, and a forwardly facing circumferential retention channel with longitudinal grooves therein.In use, the diffusion and transparent plates (with indicia held therebetween) is releasably held on the support flange by the retention strip. Accidental removal of the retention strip is prevented by the interaction of the retention strip and the camming strip within the retention channel. This arrangement permits indicia to be quickly and easily changed from the front of the illuminated sign.

Abstract: A blown hollow glass object having an optical inner wall structure is produced by pressing a plunger against a heated glass blank which has been inserted into a hollow mold cavity. The plunger is configured to taper toward a narrower end in the direction in which the plunger is introduced into the mold cavity. After formation of the optical inner wall structure by pressing of the plunger against the glass blank, the plunger is longitudinally withdrawn. The optical inner wall of the glass object is formed as a result of a generally helically shaped molding pattern defined about the exterior surface of the plunger. The molding pattern is configured in such a way as to prevent deformation of the optical inner wall structure when the plunger is withdrawn.

Abstract: A blown hollow glass object having an optical inner wall structure is produced by pressing a plunger against a heated glass blank which has been inserted into a hollow mold cavity. The plunger is configured to taper toward a narrower end in the direction in which the plunger is introduced into the mold cavity. After formation of the optical inner wall structure by pressing of the plunger against the glass blank, the plunger is longitudinally withdrawn. The optical inner wall of the glass object is formed as a result of a generally helically shaped molding pattern defined about the exterior surface of the plunger. The molding pattern is configured in such a way as to prevent deformation of the optical inner wall structure when the plunger is withdrawn.