Abstract: An improved radio frequency diplexer has resonators which are associated either with the transmission path or with the reception path, and at least two additional resonators are also provided. The at least two additionally provided resonators form an interconnection resonator pair which are strongly coupled to one another. Both the transmission path and the reception path are coupled to the second additional resonator, or both the transmission path and the reception path are coupled to the first additional resonator which is provided for inputting to/outputting from the common signal path.

Abstract: An improved radio frequency diplexer is distinguished inter alia, for example, by the following features:

Abstract: Apparatus for straightening and orientating the deformed nipples of an anode employs framework through which each anode suspended by its anode rod is passed. A hollow casing with openings for receiving the nipples is raised relative to the framework to locate the nipples in the openings. A yoke of the anode is supported by pressure-pieces driven by self-locking spindle drives to engage the yoke from the outside and by support members engaging the yoke from the underside. The casing carries mechanisms each composed of piston and cylinder units with the piston rods and cylinders interconnected by yokes. One of these yokes has recesses for applying force to a central nipple and the other of these yokes carries a force-applying element with a socket for receiving the outermost nipples. The yokes and force applying elements are guided within the casing and serve to bend the nipples back into the desired orientation. Stops serve to control and limit the displacement of the piston and cylinder units.

Abstract: The present invention relates to an apparatus for aligning the stubs disposed on the yoke of an anode rod used in an aluminum electrolytic extraction cell, the anode rod having a yoke portion to which are secured two outer and an inner stub and a rod portion, the apparatus comprising a platform, first and second receiving elements for grasping the two outer stubs, which are slideably mounted on the platform, and equipment attached to the platform for driving the first receiver element in a direction directly opposite the movement of the second receiver element.

Abstract: For the purpose of cooling anode rods carrying hot spent anodes removed from electrolytic furnaces, a separate cooling chamber is provided through which the anode rods to be cooled are conveyed by means of a through conveyor, preferably on pallets. The cooling chamber possesses, in its bottom region, a cooling air feed and, in its top region, a waste air extraction duct. At both ends, the cooling chamber is closable by means of doors.