Abstract: The present invention relates to a process for preparing alkyl halosilanes by reacting a contact material which comprises, in addition to silicon, at least one copper-containing compound as catalyst and at least one promoter, with an alkyl halide.

Abstract: The present invention relates to alkoxy-groups-containing copolymers of a) 1 to 99%-wt. water soluble ethylenically unsaturated, acid-groups-containing monomers, b) 1 to 50%-wt. monomers having a polyalkoxy sequence and c) 0 to 60%-wt. water soluble monomers which are copolymerizable with a) and b); and to the use of said copolymers for retanning leathers previously tanned by a mineral or combined method. The leathers treated with the retanning agents according to the invention in particular stand out for an improved fullness and good grain tightness.The acid groups of monomers a) preferably are carboxyl groups.

Abstract: This invention relates to a switch mat with key switches. In previously disclosed switch mats, switch chambers located under dome-shaped key caps were jointly vented. This affected key operation, and allowed soiling by dust and moisture. Here, each switch chamber has a ventilating channel with a filter layer that is permeable to air, for venting to and from the outside. In this design, the filter layer is formed by a filter matting that is dust and moisture-repellent. Because each switch chamber is separately vented to and from the outside, there is no mutual influence on operating forces of the key switches.

Abstract: A method for transferring data packets in a network of user stations is described, the data packets being transferred over a set of channels with the frequency-hopping method and the channels being in this context selected for data transfer in accordance with a frequency-hopping pattern in temporally successive time slots. Time slots in which a user station is authorized to transmit are assigned to it as needed.

Abstract: Phase-pure, crystalline tungstates of general composition Me(II)WO.sub.4, where Me(II)=Co, Ni, Zn, Pb, Mg, Ca, Sr and/or Ba. These are prepared by wet mixing tungsten components (preferably ammonium paratungstate or metatungstate) with corresponding sponding Me(II) oxides and used, preferably, in making perovskites and X-ray intensifier phosphors.

Abstract: A system for activating a dental handpiece connected to a supply hose after removal of the handpiece from a holder is provided. The handpiece includes a circuit with a switch element that acquires a change of an electrical or magnetic field or that can be influenced by such a field when the handpiece is taken from a holder or, respectively, is returned into a holder. The switch element is allocated to the end part of the supply hose facing toward the handpiece; the part that changes or, respectively, influences the field is disposed at the holder.

Abstract: The present invention refers to an injection moulding machine including an injection moulding tool which includes at least one female die and one male die. A blow moulding tool is arranged in closely spaced relationship with the injection moulding tool. A transfer member is arranged between the injection moulding tool and the blow moulding tool, the transfer member being used for transferring a preform from the injection moulding tool to the blow moulding tool. The movement of the transfer member is synchronized with the opening and closing movements of the injection moulding tool and of the blow moulding tool in such a way that said transfer member moves into the tool area of the open injection moulding tool, removes the respective preform from the male die or from the female die, moves out of the tool area and introduces the preform into the blow moulding tool that is open to an adequate extent.

Abstract: A continuously adjustable power-actuated door lock for a motor vehicle door attachable to a motor vehicle with at least two hinges, and including a locking device connected, with a door pillar and a door and having a braking element movable between a braking position, in which the door is locked, and a release position, and a drive for displacing the braking element between the braking and release positions and including an electric motor controllable in accordance with an actual open position of the door, a direction of door movement, an instantaneous speed of the door movement, and movement characteristics of the door including door weight, inner resistance of a door attachment, with the locking device being formed integrally with one of two door attaching hinges.

Abstract: A locking device for a switch cabinet has at least one locking rod for locking the door of the switch cabinet. An actuating element for displacing longitudinally the at least one locking rod for locking and unlocking the door is provided. A handle is connected to the exterior of the door so as to be foldable and rotatable. The handle has a transmission shaft for coupling the handle to the actuating element which is activated by rotating the handle. A plate-shaped member is connected to the exterior of the door and has a depression for receiving the handle. In its folded position the handle is flush with the plate-shaped member. The plate-shaped member has a receiving portion adjacent to the depression. At least one lock for locking the handle is positioned in the receiving portion at an angle relative to the plane of folding of the handle. A transmission element is coupled to the lock and slidable within the receiving portion for locking and unlocking the handle when acted upon by the lock.

Abstract: A machine for producing containers comprises processing stations with components adaptable to the shape and size of the material sections used for the container. In the case of a change in form, in particular a change in the format of the sections of material to be used, it is necessary to change the relevant adaptable components. Instead of the conventional approach where the new components must be fine-tuned after an exchange has taken place, fitting surfaces are provided at the processing stations, against which a section of the adaptable components can always be placed in the same position. Therefore, time-consuming installation of exchangeable machine components is avoided.

Abstract: A composite fastener which is comprised of a nut having a neck at one of its axial ends, and of a washer which at least partially surrounds the neck and is adjacent an external shoulder of a non-circular main section of the nut. That end of the neck which is remote from the shoulder is expanded to prevent an unintentional separation of the washer from the nut. The making of an internal thread in the nut is carried out subsequent to the expansion of the neck. The nut and the washer can constitute converted blanks which are converted by resorting to a press forging or cold forming or turning procedure.

Abstract: The invention concerns a steering valve with a closed center for supplying an actuator with hydraulic pressure, the steering valve comprising an input shaft, and output shaft, a torsionally resilient element which is connected at one end to the input shaft and at the other end to the output shaft, a control pressure switching arrangement and a torque/axial force conversion unit. A spring loaded seat valve is located in a bore of the input shaft, and closes a fluid passage passing through the torsion tube. The torque/axial force convertor opens the seat valve when relative twisting of the input shaft with respect to the valve casing occurs. According to the invention, in order to improve the response dynamics of such a steering valve, the valve comprises at least one axial bore for supplying hydraulic pressure. At one end this bore is closed by a valve which is loaded by the torque/axial force conversion unit against the hydraulic pressure.

Abstract: A machine tool comprises a working space in which workpieces are to be machined and which is closed off against the outside by a case. The case comprises an opening, that can be closed by at least one sliding door and that gives access to the working space. The sliding door comprises vertically arranged slat elements that are connected one with the other by hinge connections.

Abstract: A system for monitoring and controlling the opening and closing of an electrically driven device, such as a window or a sliding roof of an automobile, contains various mechanical components and is equipped with an electrical servo motor which can be controlled by operating elements and a sensor device which are connected to an electronic control unit that processes signals under safety aspects and to which a power semiconductor is connected. To minimize the forces exercised on any trapped object, the rating of the servo motor is controlled by the power semiconductor so that the regulating speed of a servotransmission of the device can be adjusted during its adjustment range in dependence on specified positions of the device.

Abstract: A machine tool center (10) displays at least one machine tool (11, 12, 13) which has a working area (17) accessible through an operator door (16) to process workpieces (21). Furthermore, a loading/unloading station (14) for the workpieces (21) and a loading device (22) which transports the workpieces (21) between the loading/unloading station (14) and the respective machine tool (11, 12, 13) and changes these at the machine tool (11, 12, 13) are also provided. In the new machine tool center (10) the loading device (22) is arranged below the working space (17) of the machine tool (11, 12, 13) (FIG. 1).

Abstract: The invention relates to a filter for brewed beverages, especially a coffee filter, and a process for producing such a filter, in which a fibrous material has pores with an average pore width (d) of at least about 0.1 mm measured at a fiber density of about 50% of the original fiber density of the material. The average pore width (d) is preferably in a range from 0.1 mm to 0.7 mm approximately and more preferably in a range from 0.1 mm to 0.4 mm approximately. The material is preferably paper. The pores are also preferably made by piercing with needles or by subjecting the fibrous material to water jets, providing an irregular pore edge.

Abstract: The invention concerns a method for deboning fish of the mackerel family such as the Thunnus genus, the scomboid type and the like, and an apparatus for performing this method. Fish of this family have belly spokes extending along the full length of the backbone into the area of the belly cavity, so that conventional cutting free of the back and belly spokes will lead to a separation of the ribs from the remaining bone structure. To allow an accurate filetting of mackerel fish with their specific bone structure in the ventral cavity region, the invention suggests a slice of fish meat including the ribs to be cut free automatically by providing a computer controlled tool including a knife with a cutting edge diverging with respect to the conveying path of the fish, and a supporting element, which in combination with the knife allows the ribs to be cut away progressively while respecting the anatomical characteristics of the fish.

Abstract: In the manufacture of a book, the book consisting of a cover and an inner book, the book cover is permanently shaped by the formation of folds in the articulation region thereof prior to being joined to the inner book. In the course of forming the folds in the cover, the covering material thereof is caused to undergo plastic flow and to be shaped so that beneficial stresses are created in the fold defining regions. The back of the cover may also be permanently shaped substantially simultaneously with the formation of the folds.