A stand for a camera device, the stand comprising an attachment element which is detachably fastened to the camera device and at least one support element which is displaceably connected to the attachment element. Fluid pathways are provided so that filtration of all incoming feed is assured prior to passing from the cartridge as filtrate. Furthermore, multiple transmission signals weighted by the acquired weight vector are output, and a correction value for readjusting the result of the null steering directivity control is acquired from a control PC. The power hammer assembly can include adjustment features allowing for the use of die sets of varying configurations such as, for example, shank size, shank length or alternatively, die sets fabricated for use with other machinery. In the case of this device, it is provided that a labyrinth-type seal is provided in the zone of the breakthrough in order to seal the driving chamber from the separator chamber.