Abstract: A valve having a valve housing and a shut-off element, the valve housing having a cavity for receiving the shut-off element, at least one inlet opening for a fluid to flow into the cavity and at least three outlet openings for the fluid to flow out of the cavity, the shut-off element having a guide body and being arranged in a movable manner at least partially in the cavity of the valve housing, the shut-off element having at least one shut-off projection for shutting off at least one of the outlet openings.

Abstract: A valve having a valve housing and a blocking element, wherein the valve housing has a hollow space for receiving the blocking element, an inlet opening for allowing a fluid to flow into the hollow space and an outlet opening for allowing the fluid to flow out of the hollow space, wherein the blocking element has a guide body and is arranged linearly moveably and at least partially in the hollow space of the valve housing between the inlet opening and the outlet opening, wherein the blocking element has at least one opening for allowing the fluid to flow from the inlet opening to the outlet opening via the opening.

Abstract: An intrinsically safe connection unit with a network interface for intrinsically safe appliances in explosion-risk areas, having a housing, a voltage supply connection, plug connection for connecting an intrinsically safe appliance via a transmission cable, and a decoupling circuit. For allowing even a multiplicity of network subscribers to be connected in the explosion-risk area with less wiring complexity, a plurality of plug connections of the same type are provided as network interface, each being preceded by a separate decoupling circuit, and the voltage supply connection builds a central feed connection with separate supply cores for each plug connection each having at least two plug contacts for data communication and at least two plug contacts for supplying power to the connectable appliances via the transmission cable. The invention relates also to a Controller and a network interface for use therewith.

Abstract: The invention relates to the fields of microelectronics and materials sciences and concerns an insulation layer material for integrated circuits in microelectronics, which can be used, for example, in integrated circuits as insulation material in semiconductor components. The object of the present invention is to disclose an insulation material for integrated circuits, which has dielectric constants of k?2 with good mechanical properties at the same time. The object is attained with an insulation material for integrated circuits, containing at least MOFs and/or COFs.

Abstract: An intrinsically safe connection unit with a network interface for intrinsically safe appliances in explosion-risk areas, having a housing, a voltage supply connection, plug connection for connecting an intrinsically safe appliance via a transmission cable, and a decoupling circuit. For allowing even a multiplicity of network subscribers to be connected in the explosion-risk area with less wiring complexity, a plurality of plug connections of the same type are provided as network interface, each being preceded by a separate decoupling circuit, and the voltage supply connection builds a central feed connection with separate supply cores for each plug connection each having at least two plug contacts for data communication and at least two plug contacts for supplying power to the connectable appliances via the transmission cable. The invention relates also to a Controller and a network interface for use therewith.

Abstract: The invention relates to the fields of microelectronics and materials sciences and concerns an insulation layer material for integrated circuits in microelectronics, which can be used, for example, in integrated circuits as insulation material in semiconductor components. The object of the present invention is to disclose an insulation material for integrated circuits, which has dielectric constants of k?2 with good mechanical properties at the same time. The object is attained with an insulation material for integrated circuits, containing at least MOFs and/or COFs.

Abstract: A method and a circuit arrangement (10) for the measurement of earth leakage in intrinsically safe current feeds to electronic control units (4) for underground mining installations and machines, whereby at least one earthed control unit is connected to the two intrinsically safe potentials of an intrinsically safe direct current supply (1) and at least one earth leakage sensor (20) is provided for earth leakage measurement with which steps of the periodical application of a test potential (Umess) from an intrinsically safe switchable test voltage source (21) to an RC-element (22), isolated from earth (8) by means of decoupling capacitors (C1, C2), measurement of the charging or discharging current behaviour of the RC-element (22) after each switching of the test voltage source (21) and comparison of the measured charging or discharging behaviour with stored reference data.

Abstract: The warning tone transmitter (10) according to the invention has a piezoelectric horn element (12) with two input connectors (29, 30) for the application of the supply voltage at a determined frequency and has a circuit arrangement (14) fed from the current supply, which generates the supply voltage. In order to be able to receive confirmation that the horn signal is actually generated by the warning tone transmitter (10) and in order to be able more easily to calibrate the warning tone transmitter (10) such that it is driven at its resonant frequency the piezoelectric horn element (12) has an additional output connector (34), which, when the horn element (12) is fed with the supply voltage, generates an answering signal taken to the circuit arrangement (14) if the piezoelement is actually oscillating. The magnitude of the answering signal is a value for the sound volume of the warning tone transmitter (10).

Abstract: The present invention relates to a method and to a circuit arrangement (10) for the measurement of earth leakage in the current feeds in the intrinsically safe current supply (1) to the electronic control units (4) for underground mining installations and machines, whereby at least one earthed control unit is connected to the two intrinsically safe potentials of an intrinsically safe direct current supply (1) and at least one earth leakage sensor (20) is provided for earth leakage measurement with which steps of the periodical application of a test potential (Umess) from an intrinsically safe switchable test voltage source (21) to an RC-element (22), isolated from earth (8) by means of decoupling capacitors (C1, C2), measurement of the charging or discharging current behaviour of the RC-element (22) after each switching of the test voltage source (21) and comparison of the measured charging or discharging behaviour with stored reference data are made by means of a microprocessor (24) using stored reference da

Abstract: A method and apparatus for remotely controlled operation of one of several control devices (13) for support frames in underground mining in which the control device (13′) to be actuated is selected by means of an infra-red remote operation and then the transmission of control data between a remote controller (16) and the selected control device (13) is effected by radio transmission. The remote controller, (16) has not only a radio transmitter (18) and the control devices (13) a radio receiver (15), but each control device (13) is additionally provided with at least one infra-red receiver (20), whereby by an infra-red data transmission, the control device (13′) to be actuated is first deliberately selected by the remote controller (16), before the control data is then subsequently transmitted by radio.

Abstract: A motorized woodworking tool is provided having a base with a metal top having a generally planar workpiece support surface. The workpiece support surface is coated with a fluoropolymer layer to provide a low friction, highly durable surface to support a workpiece to be cut.

Abstract: The warning tone transmitter (10) according to the invention has a piezoelectric horn element (12) with two input connectors (29, 30) for the application of the supply voltage at a determined frequency and has a circuit arrangement (14) fed from the current supply, which generates the supply voltage. In order to be able to receive confirmation that the horn signal is actually generated by the warning tone transmitter (10) and in order to be able more easily to calibrate the warning tone transmitter (10) such that it is driven at its resonant frequency the piezoelectric horn element (12) has an additional output connector (34), which, when the horn element (12) is fed with the supply voltage, generates an answering signal taken to the circuit arrangement (14) if the piezoelement is actually oscillating. The magnitude of the answering signal is a value for the sound volume of the warning tone transmitter (10).

Abstract: There is disclosed a method for controlling bacteria, fungi and spores which comprises applying thereto a 2,5-disubstituted-di (or tetra) hydrofuran, a process for preparation of such furans, and the novel compound 2,5-bis (benzyloxy) tetrahydrofuran.

Abstract: A powdered cleaning composition particularly effective in removing soil from carpets comprising solid polymeric urea-formaldehyde particles of 10 to 105 microns in size and a solvent chosen from water, high boiling hydrocarbon or chlorinated hydrocarbon solvents, C.sub.1 to C.sub.4 aliphatic alcohols and mixtures of these.

Abstract: There is disclosed a method for controlling bacteria, fungi and spores which comprises applying thereto a bactericidally, fungicidally and sporicidally effective amount of a furan selected from 2-(R.sub.1 O)-5-(R.sub.2 O)-2,5-dihydrofuran and 2-(R.sub.1 O)-5-(R.sub.2 O)-tetrahydrofuran or mixtures thereof; a process for preparing a 2,5-bis(R.sub.1 O)-2,5-tetrahydrofuran and 2,5-bis(R.sub.1 O)-tetrahydrofuran; and novel 2,5-bis(benzyloxy)tetrahydrofuran.