Abstract: A chain link 2 for connecting two additional chain links 3, 3.1 hooked therein, for the formation of a round steel link chain, for example, a conveyor chain of a scraper conveyor, comprises two bends 4, 5 and two legs 7, 7.1 connecting the bends. On its external side facing away from its inner space 6, one or more functional surfaces 8, 11, 15, 15.1, 16 are present. The chain link 2 is designed asymmetrically with respect to at least one of its central planes in at least one of its two bends 4, 5 so as to form or enlarge one or more functional surfaces 8, 11, 15, 15.1, 16.

Abstract: A chain 1 with individual links 2, 3, inserted one into the other, of which at least every second link is formed as a flat link 3. When the flat link 3 has a vertical orientation in the shank region 6, 7 connecting the curvatures 4, 5, the flat link has a smaller maximum diameter H in the vertical direction than in the horizontal direction L. The vertical diameter H of a shank 6, 7 being smaller than the diameter the flat link 3 in the curvatures 4, 5, such that the flat chain links 3 have a ratio of its cross sectional area in the shank region 6, 7 to the cross section area in the central regions 8 of the curvatures 4, 5 is greater than 0.55 and smaller than 0.85. The plane of the horizontal maximum diameter L in the shank region 6, 7 is disposed off-center and offset with respect to the outside of the particular shanks 6, 7.

Abstract: A link chain has multiple individual chain links arranged in a repeating sequence. A first chain link has two shank portions connected by two arc portions which define an interior space. One or more dividing elements project inwardly from an inside surface of a shank portion and divide the interior space into two movement spaces. A second chain link has two shank portions connected by two arc portions which define a movement space within its interior. The second link is linked to the first link and movable within one of its two movement spaces. When a longitudinal axis of the second chain link is moved from an intended, substantially aligned position by less than 90 degrees, an outside of an arc portions of the second chain link that engages a movement space of the first chain link contacts the dividing element, and an inside of a shank portion of the second chain link contacts an arc portion of the first chain link.

Abstract: The present invention discloses a chain where, upon the stressing of the chain, the links automatically arrange themselves with respect to one another in terms of their position in the chain, preventing any undesired link. A link can be developed in the form, in top view, of a drop or in the form of a keyhole. The described chain is not only suitable for application in lashing loads, but also for use with the manipulation of all accessory chain parts, in which the placement of a link is required, for example shortening hooks, shortening straps or the like.

Abstract: A chain lock for high-strength steel chains has two lock parts that are the same and can be joined together in a rotation-symmetry arrangement with one another, in the longitudinal direction. Each lock part has a longitudinal stay having arc segments that follow it at both ends. There are two coupling elements that are configured complementary to one another and are assigned to the two arc segments of each lock part. One of the elements is configured as a locking stay that follows the longitudinal extension of the lock part, and the other element is configured as a stay accommodation. The locking stay of the one lock part engages in the stay accommodation of the other lock part and rests against the complementary coupling surface of the stay accommodation with its coupling surface formed by the face end in the joining direction. The coupling surfaces comprise a coupling surface segment having a defined width, which has no curvature or only an insignificant curvature pointing in the joining direction.

Abstract: A chain joint for a high-strength link chain is disclosed. The chain joint is formed from two joint parts form-fittingly connected with one another and a center piece braced on the two opposing longitudinal side bars of joint parts. The center piece is detachably disposed with respect to the joint parts. The center piece is formed from a fitting plug and at least one fitting element indicating the specified set-in position of the fitting plug based on resilient material properties. The fitting element serves a fitting sleeve, into which the fitting plug can be set and in which the fitting plug is at least predominantly enclosed.

Abstract: A shortening hook for strands of round link chain. A safety body is arranged in the mouth of the hook. The safety body is moveable by hand against the tension of a reset spring from the area of the mouth of the hook transversely to the trajectory motion of the hook. An operating link projects into the mouth of the hook and is arranged at the end section of the safety body. This operating link can be pressed back when the hook shaft takes hold so that the safety body frees up the mouth area.

Abstract: Special-steel alloys for high-load-bearing chains and corresponding chain parts containing portions of carbon, silicon, manganese, phosphorus, sulfur, chromium, molybdenum, nickel and aluminum. In order to impart a higher strength and toughness for this purpose to the special-steel an additional alloy proportion of tungsten is used in a given weight ratio.