Abstract: A connection piece includes a profiled part having a hollow polygonal cross section along which is made, longitudinally, a straight stripping and retaining slit (10) for at least one wire. The edges of the stripping and retaining slit (10) form the free edges of a part (12) bent over toward the inside of the hollow polygonal section. A connector for at least one electrical wire has such a connection piece as well as an insulating casing (4) provided with an oblong opening (24), which is approximately parallel to the slit and lies facing the latter, and with a housing (8) in which the conducting connecting piece (2) is immobilized.

Abstract: This piece comprises a profiled part having a hollow polygonal cross section along which is made, longitudinally, a straight stripping and retaining slit (10) for at least one wire.

Abstract: The present invention relates to a packing case comprising a box, a heat-retractable plastic and at least one lid, for storing, handling and transporting a charge.In the said case, the heat-retractable plastic (2, 22) in sheet form is bonded at one or more of its edges (32, 322) to the outer surface of a wall (3) of the said box, in the vicinity of the side of the said wall, and extends, on the outside, from the said edge (32, 322) to the side of the said wall and then inside the box, opposite the inner surface of the said wall, moving away from the latter towards the charge which is to be packed.In the said case, the charge is held down against the bottom by means of the heat-retractable plastic along an overlapping zone.