Abstract: A connection device between at least one hydraulic pressure supply device, such as the pressure supply device of a mobile work machine, and at least one hydraulic consumer, such as a hydraulically actuatable work tool of at least one attachment device, having hydraulic connectors (2) at the side of the supply device and correspondingly couplable hydraulic connectors (6) at the side of the respective consumer, characterized in that by means of consumer-side data storage devices (8) data relating to the respective consumer is transmitted to the respectively assignable supply device so that, in the coupled state of the mutually assigned hydraulic connectors (2, 6), the respective consumer is individually supplied by its supply device with hydraulic medium of predeterminable pressure and volume flow.

Abstract: A filter element has a zigzag-shaped fold pack of folds. At least one terminal element is folded parallel to the folds of the fold pack. The at least one terminal element has a first leg, a second leg, and a third leg. The first leg is arranged substantially perpendicularly to a flow direction of a medium flowing through the filter element. The first, second and third legs are delimited by folds of the at least one terminal element. The first and second legs are positioned substantially at a right angle relative to one another. The third leg projects laterally away from the filter element to form a peripheral seal.