Device for bending a section having a length and method for bending the section

Abstract

The disclosure relates to devices for bending a section of an elongated object (2) having a length (1), with at least two gripping elements (3) arranged in sequence along the object (2) for gripping the object (2), wherein the gripping elements (3) are pivotably connected to each other via a joint (4), and with a rotatable transmission element (5) for driving the gripping elements (3). According to the disclosure, the transmission element (5) may comprise a sequence of at least two torque-transmitting transmission members (6) connected to each other, wherein the transmission members (6) are pivotable relative to each other in order to follow the pivoting of the gripping elements (3) and are linearly movable and / or slide-movable in order to compensate for the distance between the transmission members (6) as a result of a pivoting of the gripping elements (3) relative to each other. Methods for bending the object (2) using the devices are also shown and described.

Description

DescriptionDevice for Bending a Section having a Length and Method for Bending the SectionField

[0001] First, a device for bending a section of an elongated object is described, with at least two gripping elements arranged in sequence along the object for gripping the object, wherein the gripping elements are pivotably connected to each other via a joint, and with a rotatable transmission element for driving the gripping elements.

[0002] Furthermore, a device for bending a section of an elongated object having a certain length is described, wherein the object is gripped by at least two gripping elements arranged in sequence along the object, wherein the gripping elements are pivotably connected to each other via a joint and are driven by a rotatable transmission element.

[0003] An elongated object that is bent according to the method and / or for whose bending the device is described can be different. It can be a pipe or a comparatively thick cable. It can also be, for example, a solid rod or comparable objects.State of the Art

[0004] With regard to cables, high-voltage cables in particular, but also cablelike cable strands, are sometimes difficult to bend. However, they must be deformed to adapt to local conditions.

[0005] Various devices and methods are already known for bending such elongated objects.31451PCT mue / sn / g March 10, 2026

[0006] In particular, it is known to bend such an elongated object around a shape that defines a curve. Reference can be made here to US 10124385 B2, US 7900495 B2, and US 3613430 A.

[0007] US 3988918 A also discloses, with reference to the embodiment of Figs. 4 to 6, the arrangement of three gripping elements in sequence. The first and last gripping elements are held together directly by a connecting strap, without coupling to the middle, third gripping element. These are connected to the third, middle gripping element via a joint by a rod extending from the first and last gripping elements, respectively. To produce the bending, the gripping elements are pivoted by the movable rod extending from the first to the third gripping element and connected to the joint. Extending or retracting this rod causes the pivoting due to the counter-support provided by the strap. At least one of the gripping elements must also move in the longitudinal direction of the object during the bending process. The strap moves into an inner curvature space during the bending process.

[0008] DE 479753 B discloses connecting gripping elements with lever-like extensions at the end regions of both extensions with a rope or cable as a force transmission element and thereby pivoting the gripping elements relative to each other. In this case, the force transmission element extends in a straight line between the end regions.

[0009] US 3988918 A, embodiment of Figs. 1 to 3, also discloses providing two gripping elements that grip the object in the longitudinal direction of the object, wherein the gripping elements are pivotally connected to each other via a joint. In this case, a lever acting on one of the gripping elements causes the gripping elements to pivot and thus the elongated object to bend. The pivoting force is applied to the gripping elements via the levers outside the joint.31451PCT mue / sn / g March 10, 2026

[0010] As explained, all known devices and methods require a comparatively large amount of space outside the length of the elongated object, even when it is bent. They cannot be used conveniently in every location. In addition, the known solutions are not very efficient or require a disadvantageous amount of force to be applied, for example by the user, which is disadvantageous in terms of handling.Summary of the Disclosure

[0011] Based on the state of the art as last described, the disclosure deals with the object of specifying a method and a device for bending a section of an elongated object having a certain length, wherein the method or device can be used to achieve a desired bend in the elongated object in a space-saving manner, is efficient and user-friendly.

[0012] With regard to the device, it is first and essentially provided that the transmission element has a sequence of at least two torque-transmitting transmission members connected to each other in a torque-transmitting manner, wherein the transmission members are pivotable relative to each other in order to follow the pivoting of the gripping elements and are linearly movable and / or slide- and / or thrust-movable in order to compensate the distance between the transmission members as a result of the pivoting of the gripping elements relative to each other:

[0013] The transmission element follows the gripping elements and therefore does not need to extend significantly beyond the gripping elements. Essentially, only the space occupied by the gripping elements is required, with the transmission element being arranged or held directly at or within the gripping elements. In particular, no part of the device or any necessary handling takes place31451PCT mue / sn / g March 10, 2026inside the curve, using the space that is available at a given curve beyond the gripping elements in the direction of a center of curvature.

[0014] According to the disclosure, a sequence of transmission members is provided as a transmission element, which are pivotable relative to each other in order to follow the pivoting of the gripping elements and are simultaneously linearly movable or push, slide and / or thrust-movable relative to each other in order to compensate the distance. The relative displacement of the transmission members relative to each other preferably takes place in the space between adjacent joints of the gripping elements, so that in this respect no installation space outside the gripping elements is required. The transmission members provided according to the disclosure can be connected to each other in a resistant manner, which enables a resistant and flexibly adaptable force transmission. The multi-member transmission element has a compact and robust design and, thus, is comparatively wear-resistant.

[0015] According to a preferred embodiment, at least one transmission member is arranged or provided for pairwise operative connection with two associated and / or sequentially adjacent gripping elements. This results in targeted force transmission by the transmission member in the area of the joint. It is particularly preferred that at least one transmission member is arranged or provided in the area of or outside a joint.

[0016] Advantageously, at least one transmission member is arranged to be pivotally movable on at least one gripping element. Alternatively or additionally, at least one transmission member is essentially rigid and / or rod-shaped. This enables a robust structure and ultimately effective force transmission.31451PCT mue / sn / g March 10, 2026

[0017] In addition, it has proven advantageous for at least one transmission member to have a threaded section for driving an associated gripping element. It has proven particularly advantageous for the transmission member to have counter-rotating threaded sections for driving associated or adjacent gripping elements. The counter-rotating threaded sections then enable adjacent gripping elements to pivot in opposite or counter-rotating directions as a result of the rotational movement of the transmission member. In general, the implementation of a threaded section enables the transmission member to function in the form of a spindle, which allows for efficient force transmission and, if necessary, adaptability of the force transmission or the transmission ratio depending, for example, on the selected thread pitch.

[0018] As an alternative to the threaded solution, the transmission member can also be designed so that both tensile and compressive forces can be transmitted at the end.

[0019] It is particularly preferred that the gripping element is connected to a transmission member via at least one coupling element, in particular wherein the coupling element is designed in the form of a sleeve and / or bolt, in particular with a threaded bore for effective connection to a threaded section. The coupling of the transmission member via the coupling element allows relative movement of the transmission member relative to one or more gripping elements as a result of the pivoting of the gripping elements.

[0020] In addition, the coupling element can enable a particularly linear relative movement to a gripping member and thus an idle or inactive, free movement, such that in a non-bent state or non-pivoted state of the gripping elements, a rotation of the transmission members does not lead to a pivoting of the gripping elements. This free movement serves advantageously to keep the31451PCT mue / sn / g March 10, 2026transmission members movable when they are displaced longitudinally on the differently curved cable or object.

[0021] Similarly, due to this relative movement, even in a completely bent state of the elongated object or in a completely pivoted state of the gripping elements, no idling or (reverse) pivoting of the gripping elements can occur as a result of the twisting of the transmission members, despite the transmission members being driven. This can be achieved structurally by longitudinal displacement of the coupling element or elements in a corresponding receiving area of the gripping elements, for example in the form of an elongated hole.

[0022] As regards the connection of the transmission members to each other, these are preferably connected to each other in a torque-transmitting, pivotable and thrust- or linearly movable manner via at least one transmission joint, in particular whereby the distance between adjacent transmission members can be varied at the same time.

[0023] In terms of design, the transmission joint can be designed as a cardan joint or ball joint, in particular whereby the transmission joint is designed for the combined pivoting and thrust or linear displacement of the transmission members relative to each other. Nevertheless, other technical joint solutions can be implemented, as well.

[0024] It has proven particularly useful when the transmission joint is arranged between adjacent joints of gripping elements that are assigned to each other and / or arranged in sequence with each other. This promotes a compact and space-saving design.31451PCT mue / sn / g March 10, 2026

[0025] The gripping element is preferably designed with a U-shaped cross-section and / or has a substantially U-shaped cross-section for receiving the object between the U-legs. In particular, the gripping element has transmission tabs pointing in the opposite direction to the U-legs for connecting at least one transmission member, with a transmission member preferably passing between adjacent transmission tabs.

[0026] According to a particularly preferred embodiment, at least one gripping element has transmission lugs arranged in pairs, preferably two pairs of transmission lugs, in particular wherein the transmission lugs are preferably arranged at each end of the gripping element and / or wherein a transmission member is connected between transmission lugs and / or passed through them.

[0027] A further or second object of the present disclosure, which can be realized both independently and in combination with the first aspect of the disclosure described above, relates to a device for bending a section of an elongated object having a certain length, with gripping elements for gripping the object, wherein the gripping elements can be pivoted relative to each other by a transmission element for bending the object, wherein the gripping elements are further arranged in a sequence for mutual support over the length and are connected to each other for pivoting via a joint, and wherein a pivoting force exertable by the transmission element acts on the gripping elements outside the joint, characterized in that a transmission element is provided following the sequence of the gripping elements designed to follow the pivoting of the gripping elements, that the transmission element is connected to each of the gripping elements in the sequence of gripping elements, and that the transmission element is attached in the sequence to a first gripping element and a last gripping element to absorb a force required for the bending, wherein the transmission element is movable to change an effective length relative to an abutment provided31451PCT mue / sn / g March 10, 2026on the last gripping element and a middle gripping element provided between the first and last gripping elements.

[0028] The aspects of the disclosure relating to the first subject matter of the disclosure can be implemented in any combination with the second subject matter.

[0029] Accordingly, it is advantageously provided that the transmission element, which according to the disclosure can also be referred to synonymously as a force transmission element, has a sequence of at least two torque-transmit-ting transmission members connected to each other, wherein the transmission members are pivotable to follow the pivoting of the gripping elements relative to each other and are linearly movable and / or thrust-movable to compensate for the distance between the transmission members as a result of a pivoting of the gripping elements relative to each other.

[0030] The transmission members can be advantageously arranged to be movable relative to the abutment provided on the last gripping element and the middle gripping element provided between the first and last gripping elements.

[0031] Preferably, a transmission member can be arranged for paired operative connection with two associated and / or sequentially adjacent gripping elements and / or be associated with a joint. Preferably, at least one transmission member can be arranged to be pivotally movable on at least one gripping element and / or at least one transmission member can be designed to be essentially rigid and / or rod-shaped.31451PCT mue / sn / g March 10, 2026

[0032] Advantageously, at least one transmission member may have a threaded section for driving an associated gripping element, preferably wherein the transmission member has counter-rotating threaded sections for driving associated and / or adjacent gripping elements.

[0033] In addition, it may be provided that the gripping element is connected to a transmission member via at least one coupling element, preferably wherein the coupling element is sleeve-shaped and / or bolt-shaped, in particular with a threaded bore for effective connection to a threaded section, and / or wherein at least two coupling elements are provided for the paired effective connection of a transmission member, in particular via associated threaded sections, to gripping elements.

[0034] According to a preferred embodiment, it is provided that the transmission members are connected to each other via at least one transmission joint in a manner that transmits torque, is pivotable, and is movable in a thrust or linear direction, and / or that the distance between the transmission members is variable, preferably wherein the transmission joint is designed as a cardanor ball joint and / or wherein the transmission joint is designed for the combined pivoting and thrust or linear mounting of the transmission members relative to each other.

[0035] It may be advantageous to provide that the transmission joint is arranged between adjacent joints of respective mutually associated and / or sequentially arranged gripping elements and / or that at least one gripping element is formed in a cross-section with a U-shape and / or has at least a substantially U-shaped cross-section to accommodate the object between U-legs, preferably wherein the gripping element has transmission tabs pointing in the opposite direction to the U-legs for connecting the transmission element or the31451PCT mue / sn / g March 10, 2026transmission members forming the transmission element, particularly preferably wherein at least one transmission member is passed between adjacent transmission tabs.

[0036] It is particularly advantageous if at least one gripping element has transmission tabs arranged in pairs, preferably two pairs of transmission tabs, in particular wherein the transmission tabs are preferably arranged at each end of the gripping element and / or wherein a transmission member is connected between the transmission tabs and / or passed through them.

[0037] A further or third subject matter of the present disclosure is also a method according to the disclosure of the type mentioned at the outset, wherein the task in question is solved according to the disclosure in that, in a first step, a sequence of at least two transmission members connected to each other in a torque-transmitting manner is provided to follow the pivoting of the gripping elements, and in that, in a second step, the transmission members are connected to each other in a manner that allows them to pivot and / or move linearly and / or move in a thrust direction relative to each other in order to compensate for a changing distance between the transmission members as a result of the pivoting of the gripping elements.

[0038] The method is advantageously carried out with one of the devices according to the first or second subject matter of the present disclosure. In this respect, the above descriptions also apply to the method according to the third subject matter of the present disclosure.

[0039] Finally, according to a fourth subject matter of the present disclosure, the present disclosure also relates to a method for bending a section of an elongated object having a certain length, wherein the object is provided with31451PCT mue / sn / g March 10, 2026gripping elements in the section, wherein the gripping elements are pivoted relative to each other by a transmission element for the purpose of bending the object, wherein the gripping elements are further arranged in a sequence along the length for mutual support and are connected to each other for pivoting via a joint, and wherein a pivoting force emanating from the transmission element acts on the gripping elements outside the joint, wherein the transmission element is provided in a first step following the extension of the object, to follow the pivoting of the gripping elements, wherein, in a further step, the transmission element is connected to each of the gripping elements in the sequence of gripping elements, and wherein, in order to pivot the gripping elements, the transmission element is moved in its effective length, supported by an abutment which is provided on a first and / or last gripping element in the sequence, relative to the abutment and a third and middle gripping element arranged between the first and last gripping elements.

[0040] The method is advantageously carried out with one of the devices according to the first or second object of the present disclosure. In this respect, the above descriptions also apply with regard to the method according to the fourth object of the present disclosure.

[0041] Further subjects of the present disclosure are also corresponding uses of the devices according to the first and second aspects of the disclosure, namely for bending a section of an elongated object, such as a pipe, cable, or solid rod, having a certain length.Brief Description of the Drawings

[0042] The device for bending a section of an elongated object and a preferred method for doing so are described in more detail below with reference to the accompanying drawing. It shows:31451PCT mue / sn / g March 10, 2026Fig. 1 a device for bending a section of an elongated object with four gripping elements attached to the object according to a first embodiment after bending has been completed;Fig. 2 the object according to Fig. 1 in a perspective view from below at an angle;Fig. 3 the device according to Fig. 1 before bending the object;Fig. 4 the device according to Fig. 3 from below;Fig. 5 the enlarged area V in Fig. 3;Fig. 6 a gripping element in perspective view;Fig. 7 a cross-section through the gripping element according to Fig. 6, cut in plane VII - VII;Fig. 8 the object according to Fig. 6, cut in the plane VIII - VIII;Fig. 8a a perspective view of a closure part of the device;Fig. 9 an enlarged cross-section through the device according to Fig. 4, cut in plane IX - IX;Fig. 9a a view according to Fig. 9 in the bent state of the device and with a further cut transmission joint;31451PCT mue / sn / g March 10, 2026Fig. 10 a further cross-section through a thrust section of the transmission joint of the device, cut in the plane X-X;Fig. 11 an alternative to the thrust section of the transmission joint according to Fig. 10;Fig. 12 a cross-section through a device according to a second embodiment after bending of the object;Fig. 13 the illustration according to Fig. 12 before bending of the object or pivoting of the gripping elements, as well as an enlarged section;Fig. 13a the illustration according to Fig. 13 after the object has been bent;Fig. 14 a single representation of a joint section according to a first variant of the transmission joint;Fig. 15 a cross-section through the joint section according to Fig. 14, cut in the plane XV - XV;Fig. 16 a further cross-section through the joint section according to Fig. 14, cut in the plane XVI - XVI;Fig. 17 a cross-section through a device according to a third embodiment before bending the object, as well as an enlarged detail, and31451PCT mue / sn / g March 10, 2026Fig. 18 the cross-section according to Fig. 17 after the object has been bent.Description of the Embodiments

[0043] A device 1 for bending a section of an elongated object 2 having a length 1 is shown and described. The device 1 has a plurality, in the example shown four, of gripping elements 3 arranged in a row over the length 1. There may also be fewer than four gripping elements, for example three gripping elements, or more than four, for example five or six or more gripping elements.

[0044] The elongated object 2 can be of different designs or have a variety of shapes. It can be a pipe or a comparatively thick cable. It can also be, for example, a solid rod or similar objects. A round cross-section is not essential. It can also be an object with an angular or polygonal cross-section, including a flat part. When curved or bent by the device 1, the object 2 defines a center of curvature. This center of curvature does not necessarily have to be an ideal circular shape with respect to the bent object 2. It can also be an irregular curvature.

[0045] The device 1 includes a first gripping element 3A and a last gripping element 3B as well as at least one middle gripping element 3C arranged between the first gripping element 3A and the second gripping element 3B, in the example shown two middle gripping elements 3C, are preferably provided. The middle gripping elements 3C on the one hand and the first and last gripping elements 3A, 3B on the other hand are preferably of identical construction.

[0046] The gripping elements 3 grip the elongated object 2 and are connected to each other via a joint 4. This may involve partial or complete gripping, so that the term "gripping" in the sense of the present disclosure is preferably to be understood broadly. It is preferred that the elongated object 2, which has an31451PCT mue / sn / g March 10, 2026essentially circular cross-section, is gripped at least halfway or semicircularly in order to ensure that sufficient force is applied for bending.

[0047] Partial gripping is further preferred with regard to one or more surfaces of the object 2. Initially, this may be a first surface which, when a bend is performed, faces the center of curvature on the object 2. Actual gripping is not necessary. In principle, support is sufficient. Furthermore, the partial gripping may further include a second surface which is opposite the first surface on another outer side of the object. In addition, the partial gripping may further include a third and / or fourth surface that runs perpendicular to the first and / or second surface. If the object 2 has a round cross-section, the surface or surfaces preferably follows the curvature or the explanation refers to the surface or surfaces that would result from a projection onto a corresponding plane.

[0048] In any case, a grasping or even just supporting, which may also only be present with respect to one of the mentioned surfaces, is performed with respect to a surface which is present at least on the inside and / or outside with respect to an inner curved space, seen in the direction of the center of curvature or the axis of curvature, on the object or which occurs in the course of a bending. It may also involve widening an object that is already curved, with a backward bend into a less curved alignment or, if necessary, a straight alignment. The repositioning can thus occur with respect to the surface facing the center of curvature or the axis of curvature in the initial state. Alternatively, or additionally, the repositioning can also occur with respect to the opposite surface and, further alternatively or additionally, with respect to one or both side surfaces.

[0049] To bend the elongated object 2 using the device 1, a transmission element 5, also referred to as a force transmission element, is provided, which follows the sequence of the gripping elements 3 and thus essentially also the31451PCT mue / sn / g March 10, 2026longitudinal extension of the object 2. The transmission element 5 is suitable not only for causing the gripping elements 3 to pivot relative to each other, but also for following this movement, as can be seen, for example, in a comparison of Figs. 1 and 2 with Fig. 3. At the same time, the transmission element 5 applies the force required for bending to the object 2 via the gripping elements 3.

[0050] The pivoting of the gripping elements 3 relative to each other is effected via the joint 4, via which two gripping elements 3 located directly behind each other in the sequence are connected to each other in a pivoting manner. In the example shown, the joint 4 is provided at each end of each middle gripping element 3C. The first gripping element 3A and the last gripping element 3B each have only one joint 4, which is located at one end or the other, facing the respective middle gripping element 3C.

[0051] The transmission element 5 acts on the gripping elements 3 outside the joints 4, see Figs. 1 and 3. It is advantageous here that the transmission element 5 runs at a different distance from the aforementioned center of curvature than the joint 4, preferably offset radially inward relative to the joint 4 with respect to the center of curvature. The pivoting force emanating from the transmission element 5 acts accordingly outside the joints 4 on the gripping elements 3. At least in the unbent state of the object 2, the transmission element 5 is advantageously arranged transversely or radially inward, preferably with respect to the center of curvature, offset relative to the joint 4 with respect to the length 1 of the device 1.

[0052] The transmission element 5 is connected to each of the gripping elements 3 in the sequence of gripping elements 3, at least in the sense that the transmission element 5 acts or can act on each of the gripping elements 3. In order to achieve the pivoting of the gripping elements 3 relative to each other and31451PCT mue / sn / g March 10, 2026thus the bending of the object 2, the transmission element 5 is movable in its longitudinal direction relative to one or more of the gripping elements 3. Specifically, with regard to their longitudinal extension, the gripping elements 3 are advantageously connected to the transmission element 5 at one end region or end section 11 in each case. In particular, the middle gripping elements 3C are connected to the transmission element 5 at opposite end regions or end sections 11. The first gripping element 3A and the last gripping element 3B are preferably connected to the transmission element 5 at only one end region or end section 11.

[0053] As shown in Figs. 1 and 5, for example, the transmission element 5 has a sequence of several, for example three, torque-transmitting transmission members 6 connected to each other, wherein the transmission members 6 are pivotable to follow the pivoting of the gripping elements 3 relative to each other and at the same time are linearly movable and / or thrust-movable relative to each other, as explained in detail below. Fewer or more than three transmission members 6 may also be provided.

[0054] In other words, the transmission element 5 is preferably designed with multiple transmission members 6, which are coupled to each other in a manner that allows the multiple transmission members 6 to pivot and move linearly as a result of the pivoting of the gripping elements 3.

[0055] As a result of the pivoting of the gripping elements 3, the distance between adjacent transmission members 6 thus changes, as can be seen in particular in Fig. 13 in comparison to Fig. 13a. In addition, the angular alignment of the transmission members 6 relative to each other also changes, namely in relation to the respective longitudinal extension or longitudinal axis A of the transmission members 6, as can also be seen in the comparison of Fig. 13 with Fig. 13a,31451PCT mue / sn / g March 10, 2026and particularly clearly in the comparison of Fig. 9 with Fig. 9a. To implement this type of combined thrust and pivot coupling, the transmission members 6 are connected to each other via transmission joints 10, as explained in detail below.

[0056] As shown in Figs. 1 to 3, the transmission members 6 are arranged for paired operative connection with two associated and / or sequentially adjacent gripping elements 3, preferably in the area of a joint 4. In other words, two gripping elements 3 are assigned to each transmission member 6, i.e., each transmission member 6 acts on two gripping elements 3, preferably in the area of the joints 4, which promotes efficient force transmission. This arrangement causes a transmission member 6 to engage at opposite end regions or end sections llof each of the two middle gripping elements 3C in the area of the joints 4, relative to the extension of the object 2 or the gripping elements 3C. In these areas, drive or force transmission then takes place via the transmission members 6. The transmission members 6 preferably act on only at only one end region or end section llof the first and last gripping elements 3A, 3B.

[0057] With reference to Figs. 6 to 8, a middle or central gripping element 3C is described in further detail.

[0058] The gripping element 3C has at least one, first, support surface section 12 on which the object 2 can come into contact. The support surface section 12 is a surface facing the interior of the curvature when bent. In particular, the support surface section 12 is designed for direct contact with the object 2. Essentially, the force exerted by the object 2 on a gripping element 3C during bending can then also be absorbed by this (first) support surface section 12. In this case, a force is first exerted on the support surface sections 12 essentially at31451PCT mue / sn / g March 10, 2026the end regions or end sections 11 of the support surface sections 12 of two successive gripping elements 3C facing each other with respect to the joint 4.

[0059] Furthermore, the gripping element 3C preferably has one or two side surface sections 13, 14. With the side surface sections 13, 14, the object 2 can be gripped laterally, as seen from its support on the support surface section 12.

[0060] As can also be seen from Fig. 7, it is preferable that the gripping element 3 has a U-shaped cross-section, in particular with the surface sections 12, 13, and 14 forming a semicircular curve.

[0061] As also can be seen from Fig. 7, it is preferable that at least one gripping element 3 is formed in a cross-section with a U-shape and / or has an at least substantially U-shaped cross-section for receiving the object 2 between U-legs, i.e. between the surface section 13 and 14.

[0062] The gripping element 3C may have a further, second support surface section 15, which may be formed by a locking or closure part 16 that can be optionally connected to a gripping element 3, compare, for example, Figs. 8a and 13. The second support surface section 15 is arranged opposite the first support surface section 12. In particular, the second support surface section 15 is designed for direct contact with the object 2. The force for bending the object 2 can then also be applied or introduced essentially via this (second) support surface section 15.

[0063] The locking or closure part 16 can be U-shaped. Preferably, the closure part 16 is arranged on the gripping element 3, preferably detachably fastened, for example by a screw connection, so that it overlaps the respective gripping element 3 in sections. In the example shown, the first gripping element 3A and31451PCT mue / sn / g March 10, 2026the last gripping element 3B each have the locking or closure part 16 or the second support surface section 15 at their end areas facing away from the joints 4. This enables the object 2 to be gripped securely at the end sections of the section of the object 2 to be bent.

[0064] The gripping element 3C further preferably has receivers for receiving the transmission members 6. In the present case, receivers advantageously designed as transmission tabs 17 are provided, see Fig. 6, for holding or connecting the transmission members 6. The transmission tabs 17 preferably protrude from the underside of the first support surface section 12 and / or extend in the opposite direction to the side surface sections 13, 14. Preferably, at least one pair of transmission tabs 17 is provided, which are spaced apart from each other transversely to the length L of the gripping element 3C.

[0065] The middle gripping element 3C shown in Figs. 6 to 8 has one pair of transmission tabs 17 at each end relative to its length L. The transmission tabs 17 may be offset inwards relative to the side surface sections 13, 14 or towards the center of the gripping element 3C, see Fig. 7.

[0066] The first and last gripping elements 3A, 3B are identically formed except the first and last gripping elements 3A, 3B preferably have only one pair of transmission tabs 17, see Fig. 1.

[0067] As can be seen in Figs. 4 and 5, a transmission member 6 is passed through, in particular received or coupled, between each pair of adjacent transmission tabs 17. The distance between the adjacent transmission tabs 17 exceeds the thickness or diameter of the transmission member 6, preferably slightly.31451PCT mue / sn / g March 10, 2026

[0068] In the preferred embodiment shown, the gripping elements 3 are connected to the transmission members 6 via coupling elements 8, wherein the coupling elements 8 are advantageously received or held on or in the transmission tabs 17. The coupling elements 8 preferably extends transversely to the length L of the gripping elements 3.

[0069] The transmission tabs 17 may have receiving sections 18, with two transmission tabs 17 with associated receiving sections 18 being assigned to each coupling element 8. The coupling element 8 is preferably designed in the form of a sleeve or bolt and / or is received or mounted at its end sections in the receiving sections 18.

[0070] The coupling elements 8 are preferably rotatably mounted or received in the receiving sections 18. In the illustrated and preferred embodiment, the coupling elements 8 are received in such a way that they can both rotate and slide in the direction of the length L of the gripping element 3. Specifically, this can be achieved by designing the receiving sections 18 as elongated slots.

[0071] As a result, the coupling elements 8 accommodated in the receiving sections 18 first move linearly within the receiving sections 18, preferably in opposite directions to each other, before bending or pivoting of the gripping elements 3, as shown in Fig. 5, without any effective connection with the gripping elements 3 that would cause pivoting. This allows for a corresponding idle run at the start of the bending or pivoting when the transmission members 6 are driven or rotating. Only when the coupling elements 8 reach an end stop of the receiving section 18 does the force transmission or effective connection with the gripping element 3 occur for the purpose of pivoting.31451PCT mue / sn / g March 10, 2026

[0072] Similarly, such idling also occurs starting from an end state or complete pivoting, in which the coupling elements 8, starting from the end stop, initially move linearly within the receiving sections 18 and the (reverse) pivoting only occurs when an opposite end stop within the receiving section 18 is reached, cf. sequence of figures from Fig. 12 to Fig. 13.

[0073] As can be seen from Figs. 6 to 8, the gripping element 3C has a joint mount 19, preferably in the form of an eyelet, on one of the side surface sections 13 or 14, opposite the longitudinal extension of the gripping element 3C. A first and second plug-in section 20 may be formed on the opposite side surface section 13, 14. The plug-in section 20 may be designed to fit into the joint receptacle 19. The joint mount 19 and the plug-in sections 20 are preferably provided in association with a free edge region or longitudinally oriented end section 11 of the side surface sections 13, 14.

[0074] In particular, it can also be seen from Fig. 8 that the first support surface section 12 runs curved over a length L of the gripping element 3. In the embodiment, viewed approximately from a center of curvature C, i.e. the center of the radius of the surface section 12, this is a convex curvature. This allows the object 2 to rest favorably on the support surface section 12 even in the pivoted state, i.e., when the object 2 is bent to its maximum extent. Alternatively, or as in the embodiment, additionally, the surfaces of the side surface sections 13, 14 facing the object 2 are also curved, preferably, as seen from one side surface section 13, 14 to the other side surface section 14, 13, with a concave curvature.

[0075] As can be seen from Figs. 9, 12, and 13, the transmission members 6 have threaded sections 7A and 7B for driving the associated gripping element 3. In particular, the transmission member 6 may have a first threaded section 7A and a second threaded section 7B, wherein the first threaded section 7A and the31451PCT mue / sn / g March 10, 2026second threaded section 7B are designed to run in opposite directions to each other. The threaded sections 7 A, 7B each extend to an associated end of the respective transmission member 6. The threaded sections 7 A, 7B advantageously enable the coupling elements 8, which are operatively connected to the threaded sections 7 A, 7B, or the adjacent gripping members 6 connected to them, are moved toward each other or pivoted toward each other, or moved away from each other or pivoted away from each other, depending on the direction of rotation of the transmission members 6. This allows for efficient and precise or individually adjustable force transmission, for example by adjusting the thread pitch of the threaded sections 7A, 7B. In this respect, the transmission members 6 function advantageously as counteracting spindle members.

[0076] As can be seen in Figs. 9, 9a, 12 and 13, a transmission joint 10 can be provided between two transmission members 6. The transmission joint 10 connects the transmission members 6 to each other in a torque-transmitting and simultaneously pivotable and thrust- or linearly movable manner.

[0077] In particular, the transmission joint 10 has a pivot section 21 and a slide or thrust section 22, see Fig. 13. The pivot section 21 is designed to pivotally mount the transmission members 6 relative to each other in the event of a displacement of the longitudinal axes A of the transmission members 6 relative to each other. In the position shown in Fig. 9 before pivoting or bending, the longitudinal axes A are not angled relative to each other, or at most only slightly.

[0078] In contrast, in the pivoted position shown in Fig. 9a, the longitudinal axes A are angled relative to each other, for example by a pivot angle a in the range of 10 to 30°.31451PCT mue / sn / g March 10, 2026

[0079] The slide or thrust section 22 is designed for linear displacement or to compensate for the changing distance between the transmission members 6 relative to each other as a result of the pivoting, specifically over the stroke H shown in Fig. 9. In the position shown in Fig. 9, the stroke length H is maximum, whereas in the position shown in Fig. 9a, after bending or pivoting, the stroke H is reduced as a result of the relative movement of the transmission members 6 relative to each other.

[0080] As can be seen in Fig. 9, the pivot section 21 is preferably designed as a ball joint. In the preferred embodiment shown, two pivot sections 21 are provided, preferably with each pivot section 21 being designed as a ball joint. For this purpose, the ball joint has a joint ball 23 and a joint shell 24 connected to it by a joint. During the pivoting movement, the joint ball 23 then pivots in relation to the joint shell 24.

[0081] In the embodiment shown in Fig. 9, the thrust section 22 is arranged between adjacent pivot sections 21 or ball joints. Adjacent transmission members 6 can be connected at their ends to a pivot section 21, whereby the adjacent pivot sections 21 can be connected to each other via the thrust section 22.

[0082] The thrust section 22 preferably has thrust components that are designed to be complementary and / or rotationally fixed to each other and at the same time movable relative to each other. Specifically, a thrust or slide element 25, in particular in the form of a pin or bolt, is provided, which interacts with a thrust or slide sleeve 26 or is movably received therein.

[0083] As can be seen from Figs. 10 and 11, the thrust element 25 and the thrust or slide sleeve 26 are essentially complementary or positively locked to each other and are therefore connected to each other in a rotationally fixed31451PCT mue / sn / g March 10, 2026manner. In the embodiment shown in Fig. 10, the thrust element 25 is designed as a square section and the thrust or slide sleeve 26 has a complementary square-shaped receptacle. However, other embodiments are also possible, for example, as shown in Fig. 11, a hexagonal design of the thrust element 25 for interaction with a hexagonal receptacle in the thrust or slide sleeve 26 designed to be complementary thereto. In general, any polygonal design between the thrust element 25 and the thrust or slide sleeve 26 is possible.

[0084] It is advantageous for the joint ball 23 and the joint shell 24 to be connected to each other in a rotationally fixed manner. In the embodiment shown in Figs. 14 to 16, the joint shell 24 has a bearing pin 27 for this purpose, which is firmly connected to the joint shell 24. The bearing pin 27 engages in a corresponding material recess 28 on the joint ball 23. The material recess 28 is preferably shaped in relation to the bearing pin 27 in such a way that relative pivoting of the joint ball 23 is possible. At the same time, relative rotational movement between the joint ball 23 and the joint shell 24 is prevented or blocked by the interaction between the bearing pin 27 and the material recess 28.

[0085] In the embodiment shown in Fig. 15, the joint ball 23 or its material recess 28 is completely penetrated by the bearing pin 27, which is firmly connected to the joint shell 24 at each end. The material recess 28 is advantageously X-shaped in cross-section to allow the bearing pin 27 to pivot in the material recess 28.

[0086] However, other design solutions are also possible, for example with a bearing pin or bearing section that only partially penetrates the joint ball, which is attached to the joint shell at only one end and engages or interacts with a material recess in the joint ball in such a way that a pivoting movement is possible,31451PCT mue / sn / g March 10, 2026but a rotational displacement between the joint shell and the joint ball is blocked.

[0087] The following description uses Figs. 12 to 13a to illustrate an embodiment with pivot and thrust sections 21, 22 arranged alternately to each other. Otherwise, the explanations given for the previous embodiments also apply equally to this embodiment.

[0088] Accordingly, each transmission joint 10 may also have two pivot sections 21 and two thrust sections 22, with two pivot sections 21 arranged between the thrust sections 22. The adjacent pivot sections 21 may then be connected by or via a rigid connection 29. The transmission members 6 are each connected to the pivot section 21 via the thrust section 22. The thrust or slide sleeve 26 may be provided at each end with a pivot section 21 and / or by the transmission member 6, into which the thrust or slide element 25 projecting from the pivot section 21 engages and is received therein so as to be linearly displaceable.

[0089] In general, in all embodiments, a drive device or apparatus 30 may be provided for driving the transmission element 5 or the transmission members 6 in order to apply torque to the transmission element 5 or the transmission members 6.

[0090] It is understood that the drive device or apparatus 30 may be equipped with corresponding transmission gears or planetary gears in order to achieve the desired force transmission or the desired force transmission ratio to the transmission element 5 or the transmission members 6.31451PCT mue / sn / g March 10, 2026

[0091] The drive apparatus 30 can also be connected to a hand-held control unit with a rechargeable battery by a cable. Instead of a permanently mounted or stationary drive apparatus 30, a cordless screwdriver can also be provided.

[0092] The drive apparatus 30 is preferably rigidly or firmly connected to a gripping element 3, preferably the last gripping element 3C, for example via a fastening means 31, such as a fastening strap, which protrudes or is arranged on the underside of the last gripping element 3C in particular, see Fig. 3.

[0093] In addition, the fastening means 31 may comprise or form an abutment according to the second object or aspect of the disclosure, whereby the transmission element 5 or the transmission members 6 move relative to the fastening means 31 during the pivoting of the gripping elements 3.

[0094] The drive apparatus 30 can be connected to the first transmission member 6 in the sequence in a manner that allows pivoting and pushing via a further transmission joint 32. The further transmission joint 32 can comprise at least one pivot section 21 and at least one thrust section 22, for example as described above, see Fig. 1.

[0095] In the first embodiment, the transmission joint 32 comprises two pivot sections 21, that are connected with each other via a thrust section, as illustrated in Fig. 3.

[0096] In the second embodiment, transmission joint 32 comprises two pivot sections 21, that are connected with each other in a rigid or in a mutually non-displaceable manner. The pivot section 21 that is adjacent to the transmission member 6 comprises a thrust section 22.31451PCT mue / sn / g March 10, 2026

[0097] With reference to Figs. 17 and 18, a further, third embodiment of the device 1 is described, wherein the arrangement and design of the transmission joint 10 and / or the pivot section 21 or thrust section 22 is different from the other embodiments. Otherwise, the previous explanations regarding the previous embodiments also apply to this embodiment.

[0098] As shown in Fig. 17, in this embodiment, the pivot section 21 is designed as a cardan joint 33 or universal joint in order to achieve a pivoting or angularly movable and simultaneously rotationally fixed coupling between the transmission members 6. cf. the overview of Figs. 17 and 18. This enables a simple design and wear-resistant torque transmission of adjacent transmission members 6.

[0099] Specifically, a single universal joint 33 is provided as part of the transmission joint 10 or to form the pivot section 21. This enables a simple design. The universal joint 33 can be arranged between adjacent transmission members 6. In addition, the transmission joint 10 has the thrust section 22 next to the universal joint 33. A single thrust section 22 may be provided, via which the universal joint 33 is connected to a transmission member 6 on one side in a manner that allows for thrust movement.

[0100] However, it should be noted that a double-sided arrangement of thrust sections 22 on the universal joint 33 may also be provided, in which case the universal joint 33 is then preferably connected to both adjacent transmission members 6 in a linearly displaceable manner via thrust sections 22.

[0101] Alternatively, the transmission joint 10 may also have two cardan joints 33 connected to each other, so that a double cardan shaft can be31451PCT mue / sn / g March 10, 2026advantageously obtained. The cardan joints 33 may be connected to each other via a thrust section 22, like that shown in the embodiment shown in Fig. 9.

[0102] A rigid connection between the cardan joints 33 may also be provided, in which case the universal joints may each be connected to the transmission members 6 via thrust sections 22, like that shown in the embodiment in Fig. 13.

[0103] When bending an object 2 from a position approximately as shown in Fig. 3 to a position approximately as shown in Fig. 1, the following procedure is carried out:

[0104] First, the section of the object 2 to be connected is provided with the gripping elements 3. Here, the gripping elements 3 can be applied to the intended side of the object 2 and, if necessary, gripping elements 3 can additionally be provided with the part forming the second support surface section 15, i.e., the locking or closure part 16, to completely enclose the object 2, at least at the sections of the object 2 provided at each end or at the gripping elements 3A, 3B arranged in these areas. Such a complete enclosure can also be provided additionally with one or more additional or middle gripping elements 3C.

[0105] This allows the object 2 to be carried along to perform the bending. It may also be sufficient if only the end-side gripping elements 3A, 3B surround the object 2 with only one part corresponding to the second support surface or locking or closure part 16.

[0106] Then, a torque or rotational force is applied to the transmission element 5 or the transmission members 6, which, due to the torque-transmitting connection of the transmission members 6, causes adjacent gripping members 6 to be pulled toward each other in the area of the joints 4. As a result of the31451PCT mue / sn / g March 10, 2026joints 4, via which the gripping elements 3 are connected to each other in sequence, the gripping elements 3 pivot relative to each other, whereby the transmission members 6 move relative to each other in the space between the joints 4 and pivot relative to each other in the process.

[0107] The pivoting can preferably, at least in the case of increasing bending of the object 2, only take place to the extent that the maximum pivot angle, as described, has been set.

[0108] The maximum pivot angle can be achieved by a stop formed on at least one gripping element 3. In particular, this can be achieved by interaction between the transmission joint 10, preferably the pivot section 21, and the stop, in particular where the stop is provided or defined on an underside 34 of the gripping element 3. In particular, the underside 34 is a side or surface facing the transmission joint 10 and / or opposite the first support surface section 12, see Fig. 9a.

[0109] The necessary application of torque to the transmission member 6 can in principle be carried out in various ways, for example automatically via the torque-applying drive apparatus 30, but also manually, for example via a torque wrench, etc.

[0110] Torque can also be applied to the transmission member 6 in the opposite direction. In this case, a torque opposite to the bending is exerted on the transmission member 6. In this case, bending or deforming in the opposite direction of the object 2 can also be easily achieved on a bent section or on another section. The gripping elements 3 are pushed away from each other, and when pivoting, also around a joint 4 connecting the gripping elements 3. The effective spacing of the transmission links 6 is increased again accordingly.31451PCT mue / sn / g March 10, 2026

[0111] The device 1 can also be pivoted around the object 2, essentially around a longitudinal axis of the object 2, so that a different inner curvature is created and the object 2 can be bent or stretched in a different plane.

[0112] This may involve two joints 4 opposite each other in the width direction of the connected gripping elements 3. In a state in which the gripping elements 3 are connected in sequence essentially following a straight line, for example as shown in Fig. 3, a pivot gap S may result between facing end surfaces of one gripping element 3A and the other gripping element 3C, which are connected to each other. By reducing this pivot gap S, which is clearly V-shaped in the aforementioned configuration, the gripping elements 3 can be pivoted relative to each other.

[0113] The pivoting can be limited, in addition to or as an alternative to the underside 34 as a stop, by a position in which the gripping elements 3 come into contact with each other at the end surfaces. This also conveniently prevents excessive bending of the object 2.

[0114] A maximum bending can be specified by a size of the pivot gap S, here with regard to the opposite end surfaces. The size of the pivot gap S preferably corresponds to a (largest) pivot angle. The pivoting can only take place by such a pivot angle until the pivot angle is ultimately reduced to zero and thus there is no longer a pivot gap. In the embodiment and preferably, this is predetermined by the alignment of the end surfaces to each other in the non-pivoted state.

[0115] As a result, the present disclosure not only allows the elongated object 2 to be bent inwards, but also allows the bent object 2 to be bent back or straightened. This means that forces or bending moments can be applied in both directions. To do this, the object 2 can be held in place at the center during the31451PCT mue / sn / g March 10, 2026bending back process, using the same holding pieces or connecting parts, in particular the gripping elements 3 and / or closure parts 16, that are located at the very outside of the device 1 during normal bending.

[0116] Alternatively, for example in the case of frequent switching between bending and straightening, all four holders or connecting parts, in particular the, preferably, four gripping elements 3 and / or, preferably four, closure parts 16, can remain on the device 1. This would be the case, for example, if a cable or object is to be laid around a corner. Then it can be bent step by step, pushed further, and the previously bent piece bent back.

[0117] All spindles or transmission elements are advantageously driven by cardan shafts, at the end of which an electric motor with planetary gear is mounted. This motor could be connected by cable to a hand-held control unit with a rechargeable battery. A cordless screwdriver can also be used instead of the permanently mounted gear motor.31451PCT mue / sn / g March 10, 2026List of Reference Symbols1 Device 23 Ball joint2 Object 24 Joint shell3 Gripping element 25 Slide element3A First gripping element 26 Thrust or Slide sleeve 3B Last gripping element 27 Bearing pin3C Middle gripping element 28 Material recess4 Joint 29 Connection5 Transmission element 30 Drive apparatus6 Transmission member 31 Fastening means7 Threaded section 32 Additional transmission joint 7A Threaded section 33 Cardan joint7B Threaded section 34 Underside8 Coupling element9 Threaded hole10 Transmission joint11 End section12 First support surface section13 Side surface section A Longitudinal axis14 Side surface section a Angle15 Second support surface section C Center of Curvature16 Closure part H Stroke length17 Transmission tab 1 Length (device)18 Receiving section L Length (gripping element) 19 Joint mount S Pivot gap20 Plug section21 Pivot section22 Thrust section31451PCT mue / sn / g March 10, 2026

Claims

34Claims1. Device (1) for bending a section of an elongated object (2) having a length (1), with at least two gripping elements (3) arranged in sequence along the object (2) for gripping the object (2), wherein the gripping elements (3) are pivotably connected to each other via a joint (4), and with a rotatable transmission element (5) for driving the gripping elements (3), characterized in thatthe transmission element (5) has a sequence of at least two transmission members (6) connected to each other for transmitting torque, wherein the transmission members (6) are pivotable relative to each other in order to follow the pivoting of the gripping elements (3) and are linearly movable and / or slide-movable in order to compensate the distance between the transmission members (6) as a result of a pivoting of the gripping elements (3) relative to each other.

2. Device according to claim 1, characterized in that at least one transmission member (6) is arranged for paired operative connection with two associated and / or sequentially adjacent gripping elements (3) and / or is associated with a joint (4), and / or in that at least one transmission member (6) is arranged to be pivotable on at least one gripping element (3) and / or at least one transmission member (6) is designed to be essentially rigid in bending and / or rod-shaped.

3. Device according to one of the preceding claims, characterized in that at least one transmission member (6) has at least one threaded section (7) for driving an associated gripping element (3), preferably wherein the transmission member (6) has two threaded sections (7A, 7B) that run in opposite directions for driving associated and / or adjacent gripping elements (3).31451PCT mue / sn / g March 10, 2026354. Device according to one of the preceding claims, characterized in that the gripping element (3) is connected to a transmission member (6) via at least one coupling element (8), preferably wherein the coupling element (8) is designed in the form of a sleeve and / or bolt, in particular with a threaded bore (9) for effective connection to a threaded section (7), and / or that at least two coupling elements (8) are provided for the paired effective connection of a transmission member (6), in particular via associated threaded sections (7A, 7B), with gripping elements (3).

5. Device according to one of the preceding claims, characterized in that the transmission members (6) are connected to each other via at least one transmission joint (10) in a manner that transmits torque, is pivotable, and is movable in a thrust or linear direction, and / or in that the distance between the transmission members (6) is variable, preferably wherein the transmission joint (10) is designed as a cardan or ball joint and / or preferably wherein the transmission joint (10) is designed for the combined pivoting and thrust or linear displacement of the transmission members (6) relative to one another.

6. Device according to one of the preceding claims, characterized in that the transmission joint (10) is arranged between adjacent joints (4) of respective mutually associated and / or sequentially arranged gripping elements (3) and / orthat at least one gripping element (3) is formed in a cross-section with a U- shape and / or has an at least substantially U-shaped cross-section for receiving the object (2) between U-legs,preferably wherein the gripping element (3) has transmission tabs (17) pointing in the opposite direction to the U-legs for connecting the transmission element (5) or the transmission member (6), and31451PCT mue / sn / g March 10, 2026particularly preferably wherein at least one transmission member (6) is guided between adjacent transmission tabs (17).

7. Device according to one of the preceding claims, characterized in that at least one gripping element (3) has transmission tabs (17) arranged in pairs, preferably two pairs of transmission tabs (17), in particular wherein the transmission tabs (17) are preferably each arranged at the end of the gripping element (3) and / or wherein a transmission member (6) is connected between the transmission tabs (17) and / or passed through them.

8. Device (1) for bending a section of an elongated object (2) having a length (1), with gripping elements (3) for gripping the object, wherein the gripping elements (3) can be pivoted relative to each other by a transmission element (5) for bending the object (2), wherein the gripping elements (3) are further arranged in a sequence along the length (1) and are connected to each other for pivoting via a joint (4), and wherein a pivoting force that can be exerted by the transmission element (5) acts on the gripping elements (3) outside the joint (4), characterized in that a transmission element (5) is provided for following the sequence of the gripping elements (3) and is designed to follow the pivoting of the gripping elements (3), that the transmission element (5) is connected to each of the gripping elements (3) in the sequence of gripping elements (3), and that the transmission element (5) is attached in the sequence to a first gripping element (3A) and a last gripping element (3B) in the sequence for absorbing a force required for the bending, wherein the transmission element (5) is movable relative to an abutment provided on the last gripping element (3B) and a middle gripping element (3C) provided between the first and the last gripping element (3B) in order to change an effective length.31451PCT mue / sn / g March 10, 20269. Method for bending a section of an elongated object (2) having a length (1), wherein the object (2) is gripped by at least two gripping elements (3) arranged in sequence along the object (2), wherein the gripping elements (3) are pivotably connected to each other via a joint (4) and driven by a rotatable transmission element (5), in particular the method being carried out with a device according to one of the preceding claims, characterized in that, in a first step, a sequence of at least two transmission members (6) connected to each other in a torque-transmitting manner are provided to follow the pivoting of the gripping elements (3), and that the transmission members (6) are connected to each other in a manner that allows them to pivot and move linearly and / or slide relative to each other in order to compensate for a changing distance between the transmission members (6) as a result of the pivoting of the gripping elements (3).

10. Method for bending a section of an elongated object (2) having a length (1), wherein the object (2) is provided in the section with gripping elements (3), the gripping elements (3) are pivoted relative to each other by a transmission element (5) for bending the object (2) relative to each other, wherein the gripping elements (3) are further arranged in a sequence over the length (1) for mutual support and are connected to each other for pivoting via a joint (4), and wherein a pivoting force emanating from the transmission element (5) acts on the gripping elements (3) outside the joint (4), characterized in thatthe transmission element (5) is provided in a first step as the extension of the object, designed to follow the pivoting of the gripping elements (3), that the transmission element (5) is connected in a further step in the sequence of the gripping elements (3) with each of the gripping elements (3), and31451PCT mue / sn / g March 10, 2026that, in order to pivot the gripping elements (3), the transmission element (5) is moved in its effective length, supported by an abutment provided on a first and / or last gripping element (3) in the sequence, relative to the abutment and a third and middle gripping element (3C) arranged between the first and last gripping elements (3 A, 3B).31451PCT mue / sn / g March 10, 2026

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