Abstract: A retaining net is made of wire rings which are interlooped when producing at least some of the rings while other rings that participate in the interlooping are prefabricated. Such nets are used for protection against falling rocks, avalanches, and mud slides. The interlooping rings are formed by feeding a wire (22) through a bending tool (15) to form several turns that interloop with at least two prefabricated rings (20A, 20B) that are held by suspender members (31) so that the rings (20 being formed extend crosswise to the prefabricated rings. When the formation of a first row of interlooped rings is completed, that row is interlooped with a second row and so forth. The interlooped ring structure provides a simple, cost effective construction method for strong retaining nets.

Abstract: A steel cable eyelet construction for a looped steel cable end is protected against corrosion by a tubular member of synthetic material that extends all the way around the loop and partially into the ground when the steel cable end is formed as an anchor that is cemented into the ground. The synthetic material tubular member in turn is protected against mechanical wear and tear by a tubular metal jacket such as a stainless steel jacket. This construction is especially suitable for anchors that are used to secure protection nettings against falling rocks and avalanches. Providing the corrosion protection and the mechanical wear and tear resistance by different elements assures a prolonged serviceability of such steel cable eyelets forming anchors cemented into the ground.

Abstract: To permit absorption of sudden impacts or shock overloads, or gradual overloads, on a cable stretched to retain stones, rocks or snow masses, for example in road or railway cuts, a tube is bent to form an open loop, the end portions of which are held together by a clamp so that the end portions are frictionally engaged against each other, and the cable is threaded through the tube. Upon overload, the tube can plastically deform, thereby reducing the diameter of the loop or ring formed thereby, and accept overloads without overloading or unduly stressing the cable.