Abstract: This invention relates to a mounting tool, wherein contact springs are fixed in place on a ridge by a press-on unit. A mounting tool used for a simple and secure mounting of the contact springs is created because the press-on unit has a rolling body which rolls on counter-surfaces of the contact springs and presses the contact springs on the ridge.

Abstract: A rack frame with vertical supports, which can be partially closed by wall elements, wherein the wall elements are embodied as panel elements with beveled edges and are fastened or can be fastened by fasteners to respectively two adjoining supports. The wall elements can be fastened on the supports of the rack frame in a simple manner at an arbitrary height. The two supports each have a fastening bar extending parallel to the wall element, on which U-shaped fastening elements can be adjusted and fixed in place. The wall elements can be bolted together with the fastening elements, and the edges of the wall elements can be inserted into elongated slots of the supports.

Abstract: A rack frame having two front and two rear supports, which can be closed off by means of wall elements, except for the front, and into which structural units can be built. Holders, on which the structural units can be fastened, are attachable to both front supports. Wall elements can be simply attached at arbitrary heights. Structural units with different installation depths can be attached so that they terminate flush with each other either in the front or the rear. This is accomplished by perpendicular longitudinal slots for receiving beveled edges of the wall elements that are formed in the exteriors of the rear supports. The rear supports have fastening strips, which extend spaced apart and parallel to the wall elements. Adjustable U-shaped fastening elements can be attached to the fastening strips, and are used to fix the wall elements.

Abstract: A device for fastening support brackets to vertical frame components at the forward side of switch boxes whereby connecting brackets provided with threaded connectors are connectable to the frame components, so that the front plates of the support brackets can be screwed to the connecting bracket. In order for the vertical interval of the support bracket on the switch box to be continuously variable and the support brackets to be removable even with telescoping extensions, the invention provides that, on both frame pieces forming the front side of the switch box, connecting brackets are mounted, which are aligned facing one another with a vertical connecting bar directed parallel to the front side, and that on this connecting bar, sliding elements may be mounted to which support brackets may be attached in the desired position with a threaded connector.

Abstract: This invention relates to a subrack with side walls connected by means of cross-pieces, in which electronic modules, particularly printed circuit boards, can be placed. The modules have terminal strips on their rear edges which can be inserted into electrical connectors facing towards them mounted in the rear area of the subrack at a predetermined depth from the plane of the front panel. Through the design and arrangement of two mounting bars in the rear area of the subrack, using the same components of the subrack, different electrical connectors may be selectively mounted to receive terminal strips of electronic modules of different sizes.