Abstract: The invention relates to an apparatus for insulation monitoring between a low-voltage supply system and a high-voltage supply system, wherein the apparatus can be connected both to a high-voltage positive connection and also to a high-voltage negative connection and also to the low-voltage supply system, wherein the apparatus has a plurality of electrical contacts for coupling monitoring connections to the high-voltage circuit by means of a respective high-voltage positive connection and by means of a respective high-voltage negative connection, it being possible for said contacts to be connected in different sections of the high-voltage supply system.

Abstract: The invention relates to an apparatus for insulation monitoring between a low-voltage supply system and a high-voltage supply system, wherein the apparatus can be connected both to a high-voltage positive connection and also to a high-voltage negative connection and also to the low-voltage supply system, wherein the apparatus has a plurality of electrical contacts for coupling monitoring connections to the high-voltage circuit by means of a respective high-voltage positive connection and by means of a respective high-voltage negative connection, it being possible for said contacts to be connected in different sections of the high-voltage supply system.

Abstract: A plain bearing material includes a metallic substrate material having a surface, and a sliding layer covering the surface of the substrate material. The thickness of the sliding layer is 100 ?m to 320 ?m, and the metallic substrate material has a yield point of less than 100 N/mm2.

Abstract: A play-free plain bearing arrangement with a defined preset torque includes a plain bearing, wherein the plain bearing comprises a bearing housing and a bearing sleeve inserted into the bearing housing, wherein the bearing sleeve and the bearing housing are open axially. The play-free plain bearing arrangement also includes a shaft as a bearing mate of the bearing sleeve. The plain bearing arrangement is characterized in that the shaft having an oversize is inserted in the bearing sleeve in such a way that the bearing sleeve and the bearing housing expand.

Abstract: A play-free plain bearing arrangement with a defined preset torque includes a plain bearing, wherein the plain bearing comprises a bearing housing and a bearing sleeve inserted into the bearing housing, wherein the bearing sleeve and the bearing housing are open axially. The play-free plain bearing arrangement also includes a shaft as a bearing mate of the bearing sleeve. The plain bearing arrangement is characterised in that the shaft having an oversize is inserted in the bearing sleeve in such a way that the bearing sleeve and the bearing housing expand.

Abstract: An electrical switchgear has a first switching point and a second switching point The first switching point is arranged inside an evacuated region. The second switching point is arranged outside the evacuated region. The first switching point is surrounded by the second switching point. For the connection process of the electrical switchgear, the first switching point is switched on before the second switching point, and for the disconnection process, the first switching point is switched off after the second switching point.

Abstract: A description is given of an electronic auction machine, which reacts to changing sales conditions with appropriately adjusted machine prices. For existing automatic vending machines restocking is based upon very vague experience figures and in particular customary fluctuations in sales are not taken into consideration. With the proposed machine, using a computer current market data are recorded (31) and using these data the current market situation is automatically assessed (32,34). A corresponding updated machine price (33,35) is then displayed.

Abstract: The invention is directed to a telescopic guide wand for floor-cleaning apparatus such as household vacuum cleaners. The guide wand includes two concentrically arranged tubes which telescopically engage each other and conjointly define an inner space to accommodate the electrical supply cable for the motor blower head of the vacuum cleaner. The tubes are latched with respect to each other in several steps and the supply cable extends as helically configured cable within the upper portion of the wand. The supply cord extends concentrically out of the end of the upper tube which is configured as a handle and can be connected to the house electrical supply system. The end of the guide wand facing toward the apparatus has a connecting device disposed thereon.

Abstract: An electric vacuum cleaner having a chamber arranged above the motor housing to receive a filter bag the side of which facing the motor housing is in valve-closed socket-connection communication with the fan-air channel and which can be removed from the chamber after opening and separating the socket connection. The filter bag is in socket-connection communication with a filter-bag intermediate support which is carried along upon the swinging open of the chamber and which has the valve-closure member and from which the filter bag can be separated somewhat on the other side of the vertical position of the cross-sectional plane of the socket connection.

Abstract: A floorcare device has a round brush located in a housing and rotatable about a rigid axle. At least one axial end portion of the axle is supported in the housing by an eccentric, so that by turning the eccentric the height of the axle and thereby of the round brush relative to the housing can be varied. Turning of the eccentric is performed by a ratchet mechanism. Another such eccentric may support the other end of the axle. The ratchet mechanism may include two ratchet wheels each provided on a respective one of the eccentrics, and two rings surrounding the ratchet wheels and having inner ratchets engageable with the latter.