Abstract: A chain drive for chain hoist with two link chains including two chain wheels arranged adjacent on a shaft and in torque-proof connection to one another, each chain wheel being used to guide a section of link chain having alternately horizontal and vertical links, namely, with pockets for accommodating horizontal links and with a groove extending in the circumferential direction for accommodating vertical links. The chain wheels have a fixed angular offset smaller than the angular pitch between two successive chain links of a chain wheel. This chain drive forms a chain drive system together with a sling for two link chains running parallel, wherein the sling includes, at one end, a connecting part for a load and, opposite thereto, two adjacently arranged connection portions for respective end links of either link chain, wherein the connection portions are offset from one another along the load direction with a linear offset smaller than the chain pitch along the load direction.

Abstract: A chain joint for link chains, having a main body in the form of an oval chain link with two mutually parallel longitudinal legs which are connected to one another at their ends via a rounded link portion, one defining a receiving opening for receiving chain links. The receiving opening is bounded at its ends by one longitudinal leg section, wherein, in the longitudinal leg, a threaded bore runs in the longitudinal direction and extends in both longitudinal leg sections. A closure screw engages the threaded bore in both longitudinal leg sections, so that, while maintaining the predefined sizes for outer circumference and link width of the main body, the main body, in the region of its longitudinal legs, includes a profile cross section that is larger than the profile cross section in the region of its rounded link portions.

Abstract: A chain link for antiskid chains of vehicle tires, which is provided in order to improve the grip properties, in particular on a smooth underlying surface, with one or more spike(s) which project on one of its sides. Each spike has, perpendicular to its longitudinal extent, a cross-section whose outer edge has a corrugated peripheral contour of successive troughs and peaks.

Abstract: An eye bolt, comprising a lifting eye and a supporting bolt, wherein the supporting bolt sits, rotatable, in an insertion opening of the lifting eye and comprises, a threaded shaft and a bolt head. The supporting bolt protrudes radially from the lifting eye and is supported by an underside of the lifting eye, on a bearing surface formed on the lifting eye and running around the insertion opening. The eye bolt further comprises at least one locking member which can be brought into engagement with the bolt head and by means of which, in a locking position of same, the bolt head can be rotationally blocked vis-à-vis the lifting eye. The at least one locking member is further attached to the lifting eye radially next to the bolt head and is secured there, wherein the at least one locking member can be brought into a starting position, in which it is not engaged with the bolt head, and also into the locking position rotationally blocking the supporting bolt relative to the lifting eye.

Abstract: A chain joint for link chains, having a main body in the form of an oval chain link with two mutually parallel longitudinal legs which are connected to one another at their ends via a rounded link portion, one defining a receiving opening for receiving chain links. The receiving opening is bounded at its ends by one longitudinal leg section, wherein, in the longitudinal leg, a threaded bore runs in the longitudinal direction and extends in both longitudinal leg sections. A closure screw engages the threaded bore in both longitudinal leg sections, so that, while maintaining the predefined sizes for outer circumference and link width of the main body, the main body, in the region of its longitudinal legs, includes a profile cross section that is larger than the profile cross section in the region of its rounded link portions.

Abstract: A chain has alternating vertical and horizontal chain links and with each link having an oval profile. The vertical links having an end web supporting surface formed on its inside that engages with a complementary bearing surface on the end web of adjacent horizontal link. The supporting surfaces and the bearing surfaces of all end webs are widened beyond two lateral surfaces of the respective end web, and supporting surfaces and bearing surfaces associated with one another are formed in each case as complementary cylindrical surfaces extending between longitudinal limbs. A method for producing such, closed profile chain links are hooked into open profile chain links and then the latter are closed by welding. And wherein, all supporting surfaces and bearing surfaces associated with one another are formed in each case as cylindrical surfaces that complement one another.

Abstract: A chain has alternating vertical and horizontal chain links and with each link having an oval profile. The vertical links having an end web supporting surface formed on its inside that engages with a complementary bearing surface on the end web of adjacent horizontal link. The supporting surfaces and the bearing surfaces of all end webs are widened beyond two lateral surfaces of the respective end web, and supporting surfaces and bearing surfaces associated with one another are formed in each case as complementary cylindrical surfaces extending between longitudinal limbs. A method for producing such, closed profile chain links are hooked into open profile chain links and then the latter are closed by welding. And wherein, all supporting surfaces and bearing surfaces associated with one another are formed in each case as cylindrical surfaces that complement one another.

Abstract: A chain link for antiskid chains of vehicle tires, which is provided in order to improve the grip properties, in particular on a smooth underlying surface, with one or more spike(s) which project on one of its sides. Each spike has, perpendicular to its longitudinal extent, a cross-section whose outer edge has a corrugated peripheral contour of successive troughs and peaks.

Abstract: An eye bolt, comprising a lifting eye and a supporting bolt, wherein the supporting bolt sits, rotatable, in an insertion opening of the lifting eye and comprises, a threaded shaft and a bolt head. The supporting bolt protrudes radially from the lifting eye and is supported by an underside of the lifting eye, on a bearing surface formed on the lifting eye and running around the insertion opening. The eye bolt further comprises at least one locking member which can be brought into engagement with the bolt head and by means of which, in a locking position of same, the bolt head can be rotationally blocked vis-à-vis the lifting eye. The at least one locking member is further attached to the lifting eye radially next to the bolt head and is secured there, wherein the at least one locking member can be brought into a starting position, in which it is not engaged with the bolt head, and also into the locking position rotationally blocking the supporting bolt relative to the lifting eye.

Abstract: The invention relates to a chain link for an anti-skid chain for vehicle tires, whereby protruding studs arranged on the chain link, and at least one stud is arranged on the lengthwise side of the chain link and the longitudinal central axis of the stud is inclined with respect to the central plane of the chain link. The chain link is thus implemented as either a drawn, milled or forged chain link. The invention further relates to an anti-skid chain that exhibits chain links according to the invention.

Abstract: In an anti-skid chain with a continuous chain mesh with track crosses and a side cable fitted on a tire side when mounted, e.g. an outer side cable fitted on the outer side of the tire, as well as a tension cable fitted on the other tire side, e.g. an inner cable lying on the inner side of the tire, there are connecting elements on the tension cable, into each of which either a hook connecting the tension cable with at least one track cross or chain parts of the continuous chain mesh are directly hooked, and which are clamped on a sheathing of the tension cable secured against slippage. At least one protrusion for fixing or clamping a sheathing of the tension cable can additionally by provided on an inner surface of the connecting elements facing towards the tension cable.

Abstract: A method for producing welded round and profile chains of chain links that are connected to each other. The chain links for round and profile chains produced by this method include two chain link partial pieces that are connected to each other by friction welding.

Abstract: A turnbuckle for an anti-skid chain that can be mounted on the wheel of a vehicle. A tension cable is connected inside the turnbuckle housing to a winding roll that is pre-stressed in the winding-up direction and mounted so that it can be rotated about its axle. A ratchet wheel with at least one ratchet catch allocated to it is provided on the winding roll and the tension cable can be blocked against its direction of tension by gripping of the ratchet catch into the ratchet wheel. The ratchet catch is moved at least incrementally outwards from the idle position when the wheel isn't moving, in which it is disengaged from the ratchet wheel and the tension cable is not blocked, under the action of the centrifugal force upon rotation of the wheel, and this movement effects a gripping of the ratchet catch into the ratchet wheel.

Abstract: A tensioning apparatus (60) for an anti-skid chain to be mounted on a vehicle wheel, a tensioning strand (7) which can be pulled into the housing is connected within the housing (61) to a winding roll (62) with a ratchet wheel (65), which winding roll is pretensioned in the winding direction and rotatable about its axis. A ratchet pawl (64) associated with the ratchet wheel can be moved to the outside under the influence of centrifugal force during wheel rotation, starting from a release position not in engagement with the ratchet wheel and the tensioning strand is not blocked, causing an engagement of the ratchet pawl in the ratchet wheel and a blocking of the tensioning strand against its tensioning direction. A magnetic holding element (68) cooperates with the ratchet pawl and counteracts deflection of the ratchet pawl from the release position during standstill or slow rotation of the wheel.

Abstract: A method for producing welded round and profile chains of chain links that are connected to each other. The chain links for round and profile chains produced by this method include two chain link partial pieces that are connected to each other by friction welding.

Abstract: A connection apparatus for coupling a support flange to a load, comprising a housing having a bushing and a holder for the support flange twistable about the bushing, the support flange swivelable about a rotation axis perpendicularly to the rotation axis of the holder. A bolt rotatably extends through the bushing with an upper head part, protruding axially, its axial end exposed for receiving a load, and held in an interlocking manner against axial withdrawal. The supporting bolt comprises a shank region at an axial distance (a) with a radially enlarged shank diameter whose radial excess portion is partly covered from the outside under axial play within said axial distance by a bushing section with a reduced inside diameter.

Abstract: The invention relates to a chain link for an anti-skid chain for vehicle tires, whereby protruding studs arranged on the chain link, and at least one stud is arranged on the lengthwise side of the chain link and the longitudinal central axis of the stud is inclined with respect to the central plane of the chain link. The chain link is thus implemented as either a drawn, milled or forged chain link. The invention further relates to an anti-skid chain that exhibits chain links according to the invention.

Abstract: In an anti-skid chain with a continuous chain mesh with track crosses and a side cable fitting on an (outer) tire side when mounted, the track crosses are connected to the side cable by hooks which are hooked into at least one chain link of the side cable, wherein each hook is provided with a rim protection covering surrounding the hook and the at least one chain ink. The rim protection coverings surround the respective chain links of the side cable, while a part of the hook that provides a connection with the track crosses is protruding from the rim protection covering.

Abstract: In an anti-skid chain with a continuous chain mesh with track crosses and a side cable fitted on a tire side when mounted, e.g. an outer side cable fitted on the outer side of the tire, as well as a tension cable fitted on the other tire side, e.g. an inner cable lying on the inner side of the tire, there are connecting elements on the tension cable, into each of which either a hook connecting the tension cable with at least one track cross or chain parts of the continuous chain mesh are directly hooked, and which are clamped on a sheathing of the tension cable secured against slippage. At least one protrusion for fixing or clamping a sheathing of the tension cable can additionally by provided on an inner surface of the connecting elements facing towards the tension cable.

Abstract: A turnbuckle for an anti-skid chain that can be mounted on the wheel of a vehicle. A tension cable is connected inside the turnbuckle housing to a winding roll that is pre-stressed in the winding-up direction and mounted so that it can be rotated about its axle. A ratchet wheel with at least one ratchet catch allocated to it is provided on the winding roll and the tension cable can be blocked against its direction of tension by gripping of the ratchet catch into the ratchet wheel. The ratchet catch is moved at least incrementally outwards from the idle position when the wheel isn't moving, in which it is disengaged from the ratchet wheel and the tension cable is not blocked, under the action of the centrifugal force upon rotation of the wheel, and this movement effects a gripping of the ratchet catch into the ratchet wheel.