Abstract: Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.

Abstract: Positioning arms for positioning and assembling systems are subjected to high accelerations and must therefore be made lightweight but nevertheless resistant to bending and twisting. The use of composite materials based on metal or ceramic foams and non-expanded materials for positioning arms in positioning and assembling systems allows these positioning arms to be lightweight and nevertheless to have high rigidity. Semifinished products are arranged in the non-expanded material, since a better connection between the semifinished product and material is ensured there than in the metal or ceramic foam.

Abstract: The arrangement for charging an accumulator of a transporting device having its own electric drive at an external charging station having a machining station includes an external control unit for controlling the machining station and the charging, a charge regulating device located in the transporting device and containing a processor with a storage unit, a device for determining an actual charge in the accumulator, and a charging current changing device connected to the processor.

Abstract: A supporting plate for setting up fabrication, assembly and/or test equipment has a framework which is filled with a mineral casting so that the framework and the mineral casting form a solid plate. The framework can be placed on a mould underlay and used as a casting mould during filing of the mineral casting.

Abstract: In apparatuses of the generic type, single point modules are provided which can transfer only the transport wagons arriving from one point branch optionally into one of the two other point branches. It is achieved by the development of the point modules according to the invention as T-shaped double point modules (40) that each point branch (42, 44, 46) can be connected optionally to one of the other two point branches, which results in a construction of a network transport path system of a simpler construction which requires less space and provides a better overview. For narrowing the spacing of parallel transport path routes (76, 80), point modules (72) are proposed whose branch angle is less than 90.degree., preferably 45.degree.. Apparatus with flexible transport path and assembly systems in industrial production plants are a preferred application sector.

Abstract: A device for transporting workpieces comprises a transporting path carrier, a plurality of transporting wagons adapted to run on the transporting path carrier, units at every transporting wagon for blocking its traveling when the transporting wagon is located outside a predetermined transporting path, inquiring unit adapted to inquire the transporting path and control the blocking units, and at least one wall surface provided in the transporting path so as to be inquired by the sensor, the at least one wall surface being arranged next to the running surface and at an angle relative to the running surface on the transporting path carrier.

Abstract: A device for lifting and positioning platelike workpiece carriers comprising stops for stopping a workpiece carrier and movable into the conveying path of the workpiece carrier, and two rails located on opposite sides of the conveying path of the workpiece carrier and each having a locking bar surface cooperating with a stop surface on the workpiece carrier in a stopped position of the workpiece carrier to lift and fix the workpiece carrier in a predetermined position thereof, at least one of the rails being movable transverse relative to the conveying path of the workpiece carrier.

Abstract: A robot arm comprises a robot arm unit, and an assembly flange provided with a unit for centering and fastening of tools, the assembly flange being formed as a wall of a housing member fastened to the robot arm element and having an interior space through which line portions for power supply and control on a robot arm element side can pass, the wall having a plurality of sides and being provided on the sides with openings, a plurality of cover plates arranged to cover the openings, at least one of the cover plates being provided with internal connections for the line portions on the robot arm element side, and also being provided with a unit for connecting the internal connections with further elements.

Abstract: A linear unit for handling equipment of industrial production is proposed, the longitudinally displaceably borne tool support (2 and 19) of which is designed as a gear rack of a linear motor (11 to 18 and 22 to 24) serving for driving the support.

Abstract: A gas supply for feeding at least two components of a combustion mixture to a combustion chamber has gas dosing cylinders (16, 19) respectively for oxygen and fuel of which the gas filling pressures are controllable or adjustable by a pressure regulator (15) and a throttle valve (18) respectively. The mixture ratio of the gases can thus be changed between each filling of the dosing devices by control of the setting motor (35) of the pressure regulator. This setting can also change the filling pressure in the combustion chamber (10). The length of the piston stroke in the dosing cylinders can also be controlled.

Abstract: An elongated housing 10 has a positioning rod 13 located therein, slidable with respect to the housing. A guide rod 14 slides parallel to the positioning rod. The guide rod and the positioning rod are coupled together by end elements 38, 39. The housing 10 is formed with recesses or bores 11, 12 for the positioning rods 13, 14 and additionally is formed with bores to transfer energy at power level for subsequent positioning or operating units, as well as to permit transfer of control signals. The positioning rod can be operated by fluid pressure by coupling a piston, slidable within its operating space and forming a cylinder, or by an electrical rack-and-pinion or worm screw drive. The unit is compact and closed towards the outside, suitable for modular association with similar or other units, and devoid of external flexible hoses or cables interfering with access thereto.