Abstract: Indicating light for an optical display, with a housing exhibiting electrically conductive parts, a light-emitting diode, and a push element, capable of axial displacement in a hollow rod, for a switch mounted in the hollow rod.

Abstract: An electrical device with a pressure proof metal protection casing with at least two casing parts and a shape matching profile clamp connecting the casing parts in the region of an ignition punch safe slot against the force of an internal pressure in the casing.

Abstract: A switching device includes two or more switching modules (7, 8, 15) with at least one switch and connection clamps (24), an actuator (16), and a transfer device (39). The transfer device (39) propagates the drive motion initiated by the actuator (16) in a direction perpendicular to the axis of the actuator (16) and transfers the drive motion to at least one switching pin (18, 19) of the switching modules (7, 8, 15). The switching pin (18, 19) is positionable axially at a distance parallel to the axis of the actuator (16).

Abstract: A device for an electrical conduit (20), a heating conductor (21), or heating cable, with a cross subdivided, tubular casing (6) is furnished. The device exhibits two casing parts (8,9,58) disengageably connected to each other, a bush part (42) and at least a contact bolt (48) disposed parallel to the longitudinal axis of the casing (6). A cage tension spring (38) is disposed at the contact bolt (48) of the bush part (42) for connecting of conduit wires. A connection bolt (37) is furnished between the floor (32) of a case (28) and the case tension spring (38) for the contacting of a conduit braided screen (33).

Abstract: A plug connection for a hazardous location for energy and data transmission by means of electrical quantities in a bus system has a primary part and a secondary part constructed as transmitters, as well as limiting means for the electrical quantities to be transmitted. The limiting means are located in the primary part and are designed for limiting the electrical quantities to be transmitted to the secondary part to values allowed for the particular type of protection.

Abstract: The invention relates to a security system for flowable products in storage and/or transportation tanks, which have openings at least for filling, removing and/or controlling purposes. The security system comprises a control device and write-read devices for data exchange with connection elements connectable to the openings. The connection elements have a code mark or a tag. With each opening is clearly associated a tag. With each opening is also associated a closure element as a connection element, on which is located the tag associated with the opening. The associations of tag and opening are controllable and storable in the control device and in the case of a specific association of all the tags with the particular openings a manipulation-free state can be displayed by the control device.