Abstract: The invention relates to a rotary joint which comprises two components mounted for rotation relative to one another about an axis of rotation, and each comprising electrically conductive material and jointly enclosing at least one intermediate gap, which is in the form of a capacitive gap for the purpose of transmitting electrical signals and/or energy. The two components are mounted by means of at least one plain bearing such that they are axially fixed longitudinally relative to the axis of rotation and can be rotated relative to one another about the axis of rotation. The plain bearing has at least one plain bearing gap, at least some regions of which correspond to the capacitive gap. The invention is characterized in that the surface of at least one of the two components has, at least in the region of the capacitive gap, the electrically conductive material with an electrically insulating layer in the form of a metal oxide layer.

Abstract: The invention relates to a rotary joint which comprises two components mounted for rotation relative to one another about an axis of rotation, and each comprising electrically conductive material and jointly enclosing at least one intermediate gap, which is in the form of a capacitive gap for the purpose of transmitting electrical signals and/or energy. The two components are mounted by means of at least one plain bearing such that they are axially fixed longitudinally relative to the axis of rotation and can be rotated relative to one another about the axis of rotation. The plain bearing has at least one plain bearing gap, at least some regions of which correspond to the capacitive gap. The invention is characterized in that the surface of at least one of the two components has, at least in the region of the capacitive gap, the electrically conductive material with an electrically insulating layer in the form of a metal oxide layer.

Abstract: A flexible and twistable terahertz waveguide assembly has a flexible waveguide with waveguide flange connectors at its ends. The flexible waveguide comprises a segmented tube of a plurality of tube segments which are connected to each other. The tube encloses a dielectric waveguide which is held by means of threads (filaments) at the center of the tube. The individual segments are tiltable and/or pivotable against each other, allowing bending and twisting of the waveguide cable.

Abstract: A flexible and twistable terahertz waveguide assembly has a flexible waveguide with waveguide flange connectors at its ends. The flexible waveguide comprises a segmented tube of a plurality of tube segments which are connected to each other. The tube encloses a dielectric waveguide which is held by means of threads (filaments) at the center of the tube. The individual segments are tiltable and/or pivotable against each other, allowing bending and twisting of the waveguide cable.

Abstract: An electric plug-in connector, comprising a plug head on which a union nut is rotatably disposed for screwing the plug-in connector together with a mating connector, can be screwed together with the mating connector under adherence to a prescribed tightening torque even without a torque wrench if the union nut consists of a threaded sleeve with a ring which comes into engagement with the threaded sleeve by way of driving parts at least during screwing on, of which the one driving part is dimensioned in such a way that it is shorn off by the other driving part when exceeding a tightening torque.

Abstract: An electric plug-in connector, comprising a plug head on which a union nut is rotatably disposed for screwing the plug-in connector together with a mating connector, can be screwed together with the mating connector under adherence to a prescribed tightening torque even without a torque wrench if the union nut consists of a threaded sleeve with a ring which comes into engagement with the threaded sleeve by way of driving parts at least during screwing on, of which the one driving part is dimensioned in such a way that it is shorn off by the other driving part when exceeding a tightening torque.