Abstract: The invention is directed to connected metallic conductors which are flat and made from aluminum or aluminum-copper compounds. Oppositely-located contact surfaces (3) are provided with grooves (4), indentations or the like on the conductors. During assembly, the contact surfaces (3) are brought into direct contact, and the conductors are pressed together with such a strong force that a plastic deformation and, consequently, a metallic, electrically-conductive contact are effected at a plurality of locations at the contact surfaces. The plastic deformation effects a breaking open or splintering of oxide layers present at the contact surfaces, which exposes bare metal for producing the contact. The pressing force can be generated by tightening screws (in bores 2), which are led, for example, directly through the contact surfaces (3). A connection of line-bar segments with a plurality of parallel conductors is also described.

Abstract: The holding device is intended to allow more rapid, secure and simpler height-adaptable pipe mounting, which is intended to reduce the number of types required up to now for different pipe diameters and to be produced inexpensively. For example, a C- or L-shaped pipe support (10) is essentially designed as a plate, in whose lower area a pipe bed (12) is formed. At least on the side towards the pipe bed (12), the pipe support (10) is designed for the releasable connection with a holding element (6), which can project upwardly, laterally or downwardly. A pipe hold-down (20), which is vertically adjustable for receiving pipes (1) of different diameters, is fixed resting flat against the pipe support (10). The, as a whole very flat, construction of the holding device also allows a perfect heat insulation of the pipe, since no or only narrow gaps are created between successive insulating shells (4) laterally resting against the holder.

Abstract: Wire trellis cable trays (10, 10') made of cross wires (1) and longitudinal wires (2) connecting the former are to be made stackable so that they can be stored and transported in practical groups in a space-saving manner. For this purpose, the side legs (3) of the U-shaped cross wires (1) are crimped toward the outside at a certain height, resulting in a proportional widening of an upper portion of the tray cross-section. The stackability (with the cross wires being slightly offset in a longitudinal direction) is thus attained.