Abstract: The invention relates to a device and a method for the heat treatment of substrates, especially semiconductor wafers. The device comprises a reaction chamber with a compensation element. According to the invention the substrate can be inserted and withdrawn again more easily by the fact that the compensation element (15) can be at least partly lowered and/or raised in the reaction chamber.

Abstract: A safety belt arrangement is provided that has a belt retractor that includes a force-limiting device. When triggered in a collision, the belt retractor is associated with limited belt release therefrom. Associated with the belt retractor is a tensioning device that is actuated subsequent to the primary collision and that eliminates slack in a belt that occurs when the force-limiting device is triggered during the primary collision.

Abstract: A diaphragm carburetor is provided for an internal combustion engine that operates with scavenging air, especially a two-cycle engine in a manually-guided implement. The carburetor has an intake channel portion in which is disposed a butterfly valve that is rotatably held via a shaft and in the vicinity of which fuel-supplying channels open into the intake channel portion. The channels are supplied from a fuel-filled regulating chamber that is formed on a longitudinal side of the intake channel portion in the carburetor housing and is separated by a regulating diaphragm from a compensation chamber. The carburetor has at least one air channel that supplies additional combustion air and that has an air valve that is rotatably held via a shaft.

Abstract: A gear head for a manually guided power implement is provided. Part of the tool shaft, which receives a rotatable cutting tool, is embodied as a cylindrical splined shaft having grooves for the positive transmission of torque to the cutting tool. An abutment plate is disposed on the tool shaft and has an abutment surface that extends essentially perpendicular to the longitudinal axis of the tool shaft. A centering cylinder extends through a circular central opening of the cutting tool and has inwardly directed longitudinal ribs that engage in the grooves of these splined shaft. A free end of the centering cylinder is provided with a beveled portion that extends from an outer contour of the cylinder to into the grooves.

Abstract: The invention relates to a furnace with a body (1) of a furnace, at the lower end of which a discharge device (2) for the ashes produced in the combustion chamber is provided. A continuous conveyor device in the form of a vibrating conveyor (3) is mounted below the discharge device (2). The vibrating chute of said vibrating conveyor reliably and effectively removes the dry ashes which are at the same time cooled with air.

Abstract: A method of formally treating at least one layer for activating foreign atoms passivated in the layer by hydrogen is provided. The at least one layer is heated, in a first time interval of less than 120 seconds, above a first temperature at which a specific sheet resistance of the at least one layer decreases. The at least one layer is heated, in a second time interval which is within the first time interval and is less than 60 seconds, to above a decomposition temperature of the layer. Charge carriers are produced in the at least one layer during at least one third time interval, by electromagnetic radiation, wherein the energy of such electromagnetic radiation is greater than an energy gap of the at least one layer.

Abstract: A cam drive is provided for a valve control of a mixture-lubricated internal combustion engine that has a cylinder, and a cylinder head in which is disposed a poppet valve which is actuated by a pivotable rocker arm. Mounted in a cam chamber is a control cam that is driven by the crankshaft of the engine and on the cam path of which rests a drag lever that transfers the cam lift to the rocker arm. To achieve a reliable mixture lubrication, a flow guidance element is disposed in the annular chamber between the peripheral wall of the cam chamber and the maximum diameter of the path of a cam nose. The flow guidance element is provided with a flow edge that is disposed adjacent to the drag lever in the vicinity of the path diameter of the cam nose.

Abstract: The aim of the invention is to make it as easy as possible to change a spindle in a lifting device (2) for substrates, which device comprises a support (10). To this end the support is configured such that it can be made to engage the substrate holder (25) by rotation or by pivoting.

Abstract: Inertial measurement systems for measuring accelerations and angular speeds are currently widely used in vehicles where they serve as sensors for safety devices and navigation systems. The required reliability and precision, however, can be obtained only with extremely accurate sensors and precise finishing. The invention therefore provides for a method according to which an inertial measurement system comprising economical, mass-produced sensors is first gauged overall in a testing device in one calibration operation. During gauging any offset, mounting position and scaling errors are detected as coefficients of coupling matrices of the sensors and converted into compensation values which are then used to improved the accuracy of the sensors' measurement values when the measurement system is in operation. The above method is suitable for inertial measurement systems in land, air and water craft.

Abstract: A machine tool is provided, especially a multiple station grinding machine for the production of drill bits and similar elongate workpieces, which has at least one axially displaceable and rotatable workpiece holder which has its axial displacement and rotation drive in a sealed-off housing, at least one working tool arranged in a sealed-off working space, a sealing separation wall between the housing and the working space, at least one guide conduit arranged in sealing relationship in the separation wall for receipt of the workpiece holder, and guide elements for the workpiece disposed at the end of the guide conduit which extends into the working space.

Abstract: A safety belt arrangement includes a controllable blocking apparatus that is controlled sensitive to the vehicle and/or to the safety belt. A safety belt buckle is provided and a tensioning apparatus is inserted in the safety belt arrangement, such that the tensioning apparatus, when triggered, eliminates the slack in the belt. The arrangement also includes a continuously working device for limiting the force exerted on the safety belt by the forward displacement of the belted occupant.

Abstract: In hard layer coated parts which are coated with hard layers, this invention aims at improvements of wear resistance, oxidation behavior and lubrication properties. In hard layer coated parts which are coated with hard layers, hard layer coated parts featured by hard layers coated with minimum 1-2 layers which contain Al, Ti, Cr, N, O.

Abstract: The invention relates to a flap seal in the form of a lamella seal, comprising at least three essentially flat individual rings (1, 10) lying one on top of another in a bundle-type form. Said individual rings (1, 10) comprise an inner part which is respectively defined by an inner circumferential surface (2, 11). The outer-lying individual rings (1) are covering rings, and the inner-lying individual rings (10) are sealing rings. High-quality sealing surfaces can be produced by allocating positioning means to the covering rings (1) for positioning said covering rings (1) in relation to one another in the circumferential direction and/or in relation to inner-lying sealing rings (10) in the radial direction. The positioning means also enable a relative movement in the axial direction.

Abstract: A solenoid valve having a valve disc on a movable armature that is subjected to a restoring spring and a magnet coil. The magnet coil has a pick-up winding with a high-electrical capacity for opening and closing the valve and a holding winding whose capacity is such that it can hold the valve disc in the position in which it is lifted off of the valve seat when the valve is opened or on the valve seat when the valve is closed. A capacitor can be charged with a system voltage that is applied and can be momentarily connected to the pick-up winding in order to open or close the magnetic valve is also provided.

Abstract: The invention relates to a device for forming an end area of a workpiece (2), especially for cold press-forming an end area of a pipe, comprising two force transmitting elements (7, 9) which are guided in a common housing (3). The device is characterised in that a first pressure chamber (26) is located between the two force transmission elements (7, 9) and in that a second pressure chamber (28) is allocated to the second force transmission element (9). When the first force transmission element (7) is in the bracing position, the second force transmission element (9) can be displaced in relation to the first force transmission element (7) in order to form the workpiece.

Abstract: A check valve is provided and has a housing having inlet and outlet openings and comprising two essentially planar plate portions. A thin steel plate that acts as a valve is disposed between the plate portions. Under the effective pressure, the valve opens in one direction and blocks flow in the opposite direction. The valve has at least one valve tongue, and the plate portions in the valve are fixedly connected together. One of the plate portions is associated with the discharge zone and in the vicinity of the valve tongue is provided with at least one arched portion for limiting opening of the valve tongue. The other plate portion has bores through which the exhaust gas can enter under overpressure.

Abstract: The invention relates to a paste-like mass that can be used in electrochemical elements comprising a matrix comprising at least one organic polymer, precursors thereof, or prepolymers thereof, and an electrochemically activatable inorganic material that is not soluble in the matrix and that is in the form of a solid substance, whereby either (a) the mass comprises at least 60 vol. % (B) and, if (B) is an electrode material, (B) is worked into the matrix (A) without the assistance of a solvent or swelling agent or the matrix (A) also contains a plasticizer for the organic polymer, and the plasticizer is subsequently removed using a suitable solvent, (C) and/or (c) the mixture also contains a solid ion electron and/or mixed conductor that is different from (B) and that is present at least at the grain limits between (A) and (B) as a thin layer.

Abstract: A plug for a pipeline fitting is provided and includes a cylindrical body having an annular sealing groove, an O-ring fitted in the annular sealing groove, an expanding plate having an outer edge inserted into an annular locking groove of the pipeline fitting, and an expanding device connected to a plugging machine to insert the expanding plate into the locking groove of the fitting. The expanding plate is divided into two half plates and has a central opening with a minor axis in the direction of expansion and a major axis perpendicular to the expansion direction. The expanding plate has elongated holes and pins formed at positions symmetrical with respect to the dividing line of the expanding plate. The cylindrical body has threaded holes formed at positions corresponding to the elongated holes of the expanding plate. Screws are screwed into the threaded holes through the elongated holes to couple the expanding plate to the cylindrical body. The cylindrical body has a central circular recess.

Abstract: An emergency support member is provided for a vehicle wheel and tire assembly having a pneumatic tire that is mounted on a wheel rim. The support member is embodied as a dished annular member within the tire, and has an emergency support surface for supporting the tire in the event of damage thereto. The annular member extends axially from the center of the rim and symmetrically over a portion of the width thereof. The annular member has a curved contour, with the two axially outer wall regions being supported upon the wheel rim via annular support elements. The dished annular member is embodied as a split ring that is not closed over its periphery, and is provided with a closure device for closing off the slit. The closure device includes two flanges that extend essentially radially inwardly relative to the rim. The closure device also includes at least one locking clamp for connecting the flanges.