WO2022174301A1

WO2022174301A1 - A rod bending tool

Info

Publication number: WO2022174301A1
Application number: PCT/AU2022/050119
Authority: WO
Inventors: Samuel John SPITERI
Original assignee: Siash Ip Holdings
Priority date: 2021-02-19
Filing date: 2022-02-18
Publication date: 2022-08-25

Abstract

A rod bending tool (11) for bending rods (15) includes a first elongated arm (21) and a second elongated arm (22) connected pivotally at a pivot connection P1 by pivot connector (25) at a first end of each of the two connected elongated arms (21, 22). An open jaw (41) is mounted on the first end of the first elongated arm (21) at or near the pivot connection P1. The open jaw (41) has an elongated body with a central opening (42) formed by an elongated channel in the body and open at one side with laterally extending top edge (43) and bottom edge (44). This open jaw (41) is sized and elongated with a central opening wherein a rod (15) can be inserted in the open jaw and extend out both ends of the open jaw (41).

Description

A ROD BENDING TOOL

Field of the Invention

[001] The present invention relates to a rod bending tool and in particular to a rod bending tool developed primarily for use in/with for bending reinforcement rods for providing concrete reinforcement and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use.

Background of the Invention

[002] A rod bending tool is known in two forms.

[003] In a first form there is a pair of arms with a plurality of fixed protruding pegs or pins extending on one side of one arm and a receiving mounting hole for mounting on a plurality of different pivot pins extending from the side of the other arm to form a pivoting tool. By locating one arm on different connecting pivots and placing rods between different pins pivoting action causes a bend of 90° or 180°.

[004] It can be seen that this form of known prior art of a rod bending tool has the problems of: a) The tool must have hardened pegs or pins as all of the bending force is exerted on one peg b) The rod must remain fixed between pegs and therefore bending crushing is likely to occur in the fixed bend point c) The bending occurs on a side of the tool and therefore encourages sideways imbalance of forces. d) The relative spacing of the hardened pegs or pins defines the size of rod that can be manipulated. Therefore one tool is generally only suitable for one diameter rod. e) The connection of the two arms is attachable detachable in order to create different bend angle and this provides instability and likelihood of misalignment during use f) The distance of bend angles are restricted so complex bends are not possible [005] In a second form there is a first elongated arm that needs to be supported to the ground and a second hollow elongated arm extending from a pivot point on the side of the first arm but allowing the open end of the second arm to receive the rod for bending. Capture of the rod in the second arm and pivoting of the second arm to the first arm causes bending at a location near the open end of the second arm.

[006] It can be seen that this second form of known prior art of a rod bending tool has the problems of: g) The tool must have hardened second arm or weakness that is likely to deform at the open end of the second arm h) The bending occurs on a side of the tool and therefore encourages swivel of the tool around the single end of the first arm engaging the ground i) The rod that can be bent is restricted to the size of the hollow of the second arm j) There is substantial difficulty in getting the rod into the second arm if it is not very straight and is long k) Use of the bending tool is restricted to use in one direction as it must be ground engaging

L) The location of the bend is dependent on the edge of the second arm m) The distance of bend angles are restricted so complex bends are not possible

[007] The present invention seeks to provide a rod bending tool, which will overcome or substantially ameliorate at least one or more of the deficiencies of the prior art, or to at least provide an alternative.

[008] It is to be understood that, if any prior art information is referred to herein, such reference does not constitute an admission that the information forms part of the common general knowledge in the art, in Australia or any other country.

Summary of the Invention

[009] According to the present invention, there is provided a rod bending tool for bending rods comprising two connected elongated arms joined pivotally at a pivot connection at a first end of each of the two connected elongated arms, a first abutment mounted on at least one of the first ends of the two connected elongated arms at or near the pivot connection and a second abutment mounted on at least one of the two connected elongated arms spaced from the first end, wherein a rod can be inserted between the first and second abutment and by relative movement of the elongated arms the first and second abutments provide opposing forces to create a bend of the rod therebetween.

[0010] The rod bending tool can include a bending arch at or about the pivot wherein a rod inserted between the first and second abutment passes around the bending arch and by relative movement of the elongated arms the first and second abutments provide opposing forces to create a bend of the rod therebetween according to the shaping and sizing of the bending arch.

[0011] The second abutment can be a deflection abutment having a roller arrangement on one of the two elongated arms to cooperate with the leg with a projecting foot and a bending arch on the other of the two elongated arms at the pivot for bending rods.

[0012] The invention in one form provides a rod bending tool for bending rods including reinforcement rods for providing concrete reinforcement comprising two connected elongated arms joined pivotally at a pivot connection at a first end of each of the two connected elongated arms, an open jaw mounted on at least one of the first ends of the two connected elongated arms at or near the pivot connection, a deflection abutment mounted on at least one of the two connected elongated arms spaced from the first end, wherein a rod can be inserted in the open jaw and against the deflection abutment.

[0013] The rod bending tool provided can be a readily transportable and orientable hand tool having a pivot at the joined end of two elongated arms with a fixed jaw at the pivot for bending rods

[0014] It can be seen that the invention of a rod bending tool provides the benefit of allowing the rod to be bent to be approached at various angles and therefore allow the same tool to be able to be used for bending protruding concrete reinforcements rods that could be set at various angles in the concrete.

[0015] According to a further aspect of the present invention, there is provided a method of bending rods including bending reinforcement rods for providing concrete reinforcement including the steps of: • Providing an open jaw at a pivot of two pivotally connected elongated arms with a deflection abutment mounted on at least one of the two connected elongated arms spaced from the pivot;

• Opening the two pivotally connected elongated arms to a substantially colinear arrangement ;

• Providing a rod to be bent into the open jaws and adjacent to the deflection abutment;

• Closing the two pivotally connected elongated arms towards a substantially rectilinear arrangement;

• Wherein the rod in the open jaw is selectively bent to an angle substantially between 0° and 90°.

[0016] According to a still further aspect of the invention there is provided A method of bending rods including bending reinforcement rods for providing concrete reinforcement including the steps of:

• Providing two pivotally connected elongated arms with a pivot near one end and one of the elongated arms having a leg with a protruding foot at the one end and on one side of the pivot and the other of the elongated arms having a deflection abutment on the other side of the pivot;

• Providing a bending arch on or at the pivot;

• Opening the two pivotally connected elongated arms to a substantially colinear arrangement;

• Providing a rod to be bent into the adjacent to the protruding foot and the deflection abutment and the bending arch therebetween;

• Wherein the rod in the is selectively bent to an angle and curvature around the bending arch to an angle substantially between 0° and 90° dependent on the relative angle between the two arms and to a curvature substantially matching the curvature of the bending arch.

[0017] The rod bending tool can provide substantial including any one or more of the following: i. improvements in structure and assembly including construction in order to simplify use ii. Improve ents in versatility of angle of operation iii. Improvements in allowability to use on various thicknesses of rods; iv. Improvements in allowing complex bends of the same rod at different locations by the same tool; v. Improvements in aids to effect the bending of rods.

[0018] Other aspects of the invention are also disclosed.

Brief Description of the Drawings

[0019] Notwithstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:

Fig. 1 is a diagrammatic view of a rod bending tool for bending rods including bending reinforcement rods for providing concrete reinforcement in accordance with another preferred embodiment of the present invention;

Figs 2 and 3 are front view and side view of an aligned jaw of a rod bending tool such as in Fig 1 ;

Fig 4 is a front view a misaligned jaw which can be used in an embodiment of a rod bending tool such as in Fig 1;

Fig. 5 is diagrammatic view of the relative angles of the handle and bending deflection abutment on one handle relative to the lateral extension of the open jaws to effect the bending;

Figs 6, 7 and 8 are diagrammatic views of the use of a rod bending tool of one embodiment of the invention in simple narrow rods, larger diameter rods, and multiple bends respectively;

Fig. 9 is a diagrammatic view of a process of using a rod bending tool according to an embodiment of the invention;

Figs 10, 11 and 12 are diagrammatic front perspective, overhead and side views respectively of a further embodiment of a rod bending tool of the invention;

Fig. 13 is a diagrammatic exploded view of the parts of the rod bending tool of Fig 12; Figs 14, 15, 16 and 17 are diagrammatic details of primarily the active pivoting end of the rod bending tool in end view, side view, rear perspective view and front perspective view respectively; and

Fig. 18 is a diagrammatical functional side view showing operation of the active pivoting end of the rod bending tool of Fig 10.

Description of Preferred Embodiments

[0020] It should be noted in the following description that like or the same reference numerals in different embodiments denote the same or similar features.

[0021] Referring to the drawings and the diagrammatic embodiment of Figs 1 to 8, there is shown a rod bending tool 11 for bending rods 15. These rods can be in a fixed location such as reinforcement rods for providing concrete reinforcement. It is therefore necessary to have a manual tool that is readily orientated and used.

[0022] In this embodiment the rod bending tool 11 for bending rods 15 includes a first elongated arm 21 and a second elongated arm 22 connected pivotally at a pivot connection P1 by pivot connector 25 at a first end of each of the two connected elongated arms 21 , 22. This pivot connector can be a washered nut and bolt connector that holds the two arms but allows relative rotation.

[0023] An open jaw 41 is mounted on the first end of the first elongated arm 21 at or near the pivot connection P1. The open jaw 41 has an elongated body with a central opening 42 formed by an elongated channel in the body and open at one side with laterally extending top edge 43 and bottom edge 44. This open jaw 41 is sized and elongated with a central opening wherein a rod 15 can be inserted in the open jaw and extend out both ends of the open jaw 41

[0024] Referring to Figs 2 and 3 there is shown the front view of the side of the open jaws 41 and the corresponding side or cross sectional view with relative parts shown by connecting dotted lines. In Figs 2 and 3 the top edge 43 overlies the bottom edge 44 with the central opening 42 accessible therebetween to place the rod 15 for bending. The rod 15 is bent against the inner surface of the central opening 42 or if the rod is smaller diameter than the central opening then by the end top edge 48 and the end bottom edge 49. However in Fig 4 it is shown with the top edge 43 offset to the bottom edge 44 with the central opening 42 accessible therebetween to place the rod 15 for bending. The rod 15 is bent against the inner surface of the central opening 42 or if the rod is smaller diameter than the central opening then by the more distantly spaced end top edge 48 and the end bottom edge 49. This offset allows more versatility of the sizes and strengths of rods that can be bent with a different jaw geometry.

[0025] A deflection abutment 31 can be mounted on the second elongated arm 22 at a position spaced from the first end of the second elongated arm where the pivotal connection P1 is located. The deflection abutment 31 is in one form a rolling deflection abutment to allow the rod 15 to be bent to slide along the deflection abutment. This can be achieved by a roller body 32 mounted by axle pin 33 to the second arm 22 to allow free rotation of the roller body 32. The roller body 32 further includes an outer roller groove 34 extending circumferentially and rotating around the axle pivot. A substantial benefit of the rolling deflection abutment 31 is that the rod can have a deflection force applied while not restricting the longitudinal sliding of the rod alongside the second arm 22. In this way the deflection force applies the bend to the rod at the jaws 41 whereas if there was not ready sliding, part of the deflection force would effect unwanted distortion bending of the rod between the open jaws 41 and the deflection abutment 31.

[0026] Referring to Figure 5 there is shown that the open jaws 41 extend in an elongated matter with the body and central opening extending along a linear axis. The handles move relative to each other at an angle HA around the pivot at the jaws. The open jaws 41 are offset to the axis of elongation of the first elongated arm 21. The offset angle shown as JA is a fixed angle to at least one of the handles that and preferably the angle is in the range of 60° and 90°.

[0027] In the operation of a rod bending tool of the invention for bending rods such as for bending reinforcement rods providing concrete reinforcement, the rod 15 can be inserted through the top edge and bottom edge 43, 44 of the open jaws 41 such that the rod extends out the lateral open ends 48, 49.

[0028] An open jaw 41 is provided at a pivot 25 of two pivotally connected elongated arms 21 , 22 with a deflection abutment 31 mounted on at least one of the two connected elongated arms spaced from the pivot. This enables opening of the two pivotally connected elongated arms to a substantially colinear arrangement. [0029] A rod 15 to be bent can then be inserted into the open jaws 41 and extend in an unbent state adjacent to the deflection abutment 31.

[0030] The bending is undertaken by the closing of the two pivotally connected elongated arms 21 , 22 towards a substantially rectilinear arrangement. Since the rod bending tool 11 has an open fixed jaw 41 extending across the pivot 25 such that the pivoting two elongated arms can extend from substantially linear to substantially perpendicular, wherein the rod in the open jaw is selectively bent to an angle substantially between 0° and 90°.

[0031] As shown in Figs 6 and 7 different sized rods can be bent by the same bending tool 11. Due to the size of the opening of the open jaws and the engagement of the rod along the lateral insides of the open jaws or the lateral ends 48, 49 the rods of different thickness can have a different orientation within the jaws. However the same bend of 90° or other required bend angle can be effected by differing relative angles HA of the handles and thereby different relative positions of the open jaws 41 and the rolling deflection abutment 31.

[0032] An important element is that the rod 15 does not need to be in a fixed position relative to the protuberance 31 and therefore is more particularly a roller 31 to allow the rod 15 to roll along the roller while the handles 21 , 22 are being relatively displaced to have the open jaws 41 effect the bend. This is particularly beneficial in not bowing the rod away from the bend but retaining a linear extension away from the bend.

[0033] Another benefit of the roller 31 is that it can provide the required opposing bending force to the force provided by the open jaws 41 at any position along the rod 15 as required dependent on the angle HA of the handles 21 , 22 and not the distance along the rod 15. This allows the different geometry as required by different thickness rods. [0034] Referring to Fig. 8 there is shown a multiple bend A and B since after bend A is undertaken the rod 15 can be repositioned into the open jaw 41 to undertake bend B. This is particularly available by the open jaws having an opening extending across the lateral extension of the open jaws and thereby enabling the rod to approach the side of the bending tool and be received into the open jaws 41.

[0035] Referring to Figs 10 to 13 there is shown a further embodiment of a rod bending tool 12 which has two handles 21, 22 connected at pivot 25 and able to relatively locate at angle HA to each other. Up from the pivot on second handle 22 is a rolling deflection abutment 31. However at the pivot end of the handles 21, 22 is not an open jaws 41 but instead a leg 52 having a foot 53 at one end and a bending arch 54 on the other side of the pivot connection 25. Therefore the bending of the rod 15 is achieved by opposing forces of the foundation position of the rod 15 alongside the foot 53 and the movement of the rolling deflection abutment 31 by the relative movement of the handles 21 , 22.

[0036] A substantial advantage of the bending arch 54 between the outlying opposing forces of the foot 53 and the roller 31 is that the bend can be controlled. Instead of a folding bend there is ensured a curved bend. The bending arch 54 can be selected to have a curve and possibly be a circular segment with a required diameter. This diameter will limit any extreme bending of particular diameter rods to a required curved bend. Different diameter rods can cope with different circular diameter curves and therefore the bending arch 54 could be interchangeable with different diameters or be built up to change bend profile.

[0037] It can be seen that the rod 15 can still be located alongside the side of the rod bending tool and therefore allows for bending at any required position along the rod. Therefore even if one end of the rod 15 is emerging from concrete slab the rod bending tool 11 , 12 can approach from the side at any required position for bending. This also allows multiple or complex bending to occur.

[0038] Still further the roller 31 and the allowance for the countering force to be any position along the rod 15 allows multiple angles of bending to be applied by varying the relative angle HA of the handles 21 , 22 and not be limited to

[0039] As shown by Fig 9 in use the method of bending rods including bending reinforcement rods for providing concrete reinforcement includes the steps of: a) Providing two pivotally connected elongated arms with a pivot near one end and one of the elongated arms having a leg with a protruding foot at the one end and on one side of the pivot and the other of the elongated arms having a deflection abutment on the other side of the pivot; b) Providing a bending arch on or at the pivot; c) Opening the two pivotally connected elongated arms to a substantially colinear arrangement; d) Providing a rod to be bent into the adjacent to the protruding foot and the deflection abutment and the bending arch therebetween; e) Closing the two pivotally connected elongated arms towards a substantially rectilinear arrangement; wherein the rod in the is selectively bent to an angle and curvature around the bending arch to an angle substantially between 0° and 90° dependent on the relative angle between the two arms and to a curvature substantially matching the curvature of the bending arch.

[0040] The deflection abutment is a roller arrangement on at least one of the two elongated arms to cooperate with the fixed jaw at the pivot for bending rods. The bending arch extends across the pivot such that the pivoting two elongated arms can extend from substantially linear to substantially perpendicular.

[0041]

Interpretation

Embodiments:

[0042] Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to one of ordinary skill in the art from this disclosure, in one or more embodiments.

[0043] Similarly it should be appreciated that in the above description of example embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description of Specific Embodiments are hereby expressly incorporated into this Detailed Description of Specific Embodiments, with each claim standing on its own as a separate embodiment of this invention. [0044] Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention, and form different embodiments, as would be understood by those in the art. For example, in the following claims, any of the claimed embodiments can be used in any combination.

Different Instances of Objects

[0045] As used herein, unless otherwise specified the use of the ordinal adjectives “first”, “second”, “third”, etc., to describe a common object, merely indicate that different instances of like objects are being referred to and are not intended to imply that the objects so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

Specific Details

[0046] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Terminology

[0047] In describing the preferred embodiment of the invention illustrated in the drawings, specific terminology will be resorted to for the sake of clarity. However, the invention is not intended to be limited to the specific terms so selected, and it is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar technical purpose. Terms such as "forward", "rearward", "radially", "peripherally", "upwardly", "downwardly", and the like are used as words of convenience to provide reference points and are not to be construed as limiting terms.

Comprising and Including

[0048] In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” are used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

[0049] Any one of the terms: including or which includes or that includes as used herein is also an open term that also means including at least the elements/features that follow the term, but not excluding others. Thus, including is synonymous with and means comprising.

Scope of Invention

[0050] Thus, while there has been described what are believed to be the preferred embodiments of the invention, those skilled in the art will recognize that other and further modifications may be made thereto without departing from the spirit of the invention, and it is intended to claim all such changes and modifications which fall within the scope of the invention. For example, any formulas given above are merely representative of procedures that may be used. Functionality may be added or deleted from the block diagrams and operations may be interchanged among functional blocks. Steps may be added or deleted to methods described within the scope of the present invention.

[0051] Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms.

Industrial Applicability

[0052] It is apparent from the above, that the arrangements described are applicable to the mechanical fields and for bending rods including bending reinforcement rods for providing concrete reinforcement industries.

Claims

Claims The claims defining the invention are as follows:

1. A rod bending tool for bending rods comprising: a. two connected elongated arms joined pivotally at a pivot connection at a first end of each of the two connected elongated arms b. a first abutment mounted on at least one of the first ends of the two connected elongated arms at or near the pivot connection c. a second abutment mounted on at least one of the two connected elongated arms spaced from the first end wherein a rod can be inserted between the first and second abutment and by relative movement of the elongated arms the first and second abutments provide opposing forces to create a bend of the rod therebetween.

2. A rod bending tool according to claim 1 including a bending arch at or about the pivot wherein a rod inserted between the first and second abutment passes around the bending arch and by relative movement of the elongated arms the first and second abutments provide opposing forces to create a bend of the rod therebetween according to the shaping and sizing of the bending arch.

3. A rod bending tool according to claim 2 wherein the bending arch is changeable to a different curvature according to the size of the rod to be bent and the required curve of the bend.

4. A rod bending tool according to claim 2 wherein the bending arch is replaceable to a different curvature according to the size of the rod to be bent and the required curve of the bend.

5. A rod bending tool according to any one of claims 1 to 4 for bending rods including reinforcement rods for providing concrete reinforcement

6. A rod bending tool according to claim 1 to 5 having a pivot at the joined end of two elongated arms with the open jaw being a fixed jaw on an outer side

7. A rod bending tool according to claim 1 to 6 having a pivot at the joined end of two elongated arms with the open jaw being at the pivot for bending rods.

8. A rod bending tool according to claim 1 to 7 the second abutment is a deflection abutment having a roller arrangement on at least one of the two elongated arms to cooperate with the fixed jaw at the pivot for bending rods.

9. A rod bending tool according to any one of claims 1 to 8 wherein the first abutment is an open jaw mounted on at least one of the first ends of the two connected elongated arms at or near the pivot connection wherein a rod can be inserted in the open jaw and against the deflection abutment.

10. A rod bending tool according to 9 having an open fixed jaw extending across the pivot such that the pivoting two elongated arms can extend from substantially linear to substantially perpendicular.

11.A rod bending tool according to claim 9 having an open fixed jaw extending across the pivot such that the pivoting two elongated arms can extend from substantially linear to substantially perpendicular.

12. A rod bending tool according to any one of claims 1 to 4 wherein the first abutment is a leg with a projecting foot wherein a rod can be located against the foot and against the second abutment.

13. A rod bending tool according to 12 wherein the first abutment is a leg at the pivoting end of one of the two elongated arms and the second abutment is attached to the other of the two elongated arms such that relative movement of the elongated arms the first and second abutments provide opposing forces to create a bend of the rod therebetween.

14. A rod bending tool according to any one of claims 1 to 12 wherein the second abutment is a deflection abutment mounted on at least one of the two connected elongated arms spaced from the first end

15. A rod bending tool according to claim 14 the second abutment is a deflection abutment having a roller arrangement on one of the two elongated arms to cooperate with the leg with a projecting foot and a bending arch on the other of the two elongated arms at the pivot for bending rods.

16. A method of bending rods including bending reinforcement rods for providing concrete reinforcement including the steps of: a. Providing an open jaw at a pivot of two pivotally connected elongated arms with a deflection abutment mounted on at least one of the two connected elongated arms spaced from the pivot; b. Opening the two pivotally connected elongated arms to a substantially colinear arrangement ; c. Providing a rod to be bent into the open jaws and adjacent to the deflection abutment; d. Closing the two pivotally connected elongated arms towards a substantially rectilinear arrangement;

Wherein the rod in the open jaw is selectively bent to an angle substantially between 0° and 90°.

17. A method of a rod bending tool according to claim 16 wherein the deflection abutment is a roller arrangement on at least one of the two elongated arms to cooperate with the fixed jaw at the pivot for bending rods .

18. A method according to claim 17 wherein the open fixed jaw extending across the pivot such that the pivoting two elongated arms can extend from substantially linear to substantially perpendicular.

19. A method of bending rods including bending reinforcement rods for providing concrete reinforcement including the steps of: a. Providing two pivotally connected elongated arms with a pivot near one end and one of the elongated arms having a leg with a protruding foot at the one end and on one side of the pivot and the other of the elongated arms having a deflection abutment on the other side of the pivot; b. Providing a bending arch on or at the pivot; c. Opening the two pivotally connected elongated arms to a substantially colinear arrangement; d. Providing a rod to be bent into the adjacent to the protruding foot and the deflection abutment and the bending arch therebetween; e. Closing the two pivotally connected elongated arms towards a substantially rectilinear arrangement; Wherein the rod in the is selectively bent to an angle and curvature around the bending arch to an angle substantially between 0° and 90° dependent on the relative angle between the two arms and to a curvature substantially matching the curvature of the bending arch.

20. A method of a rod bending tool according to claim 19 wherein the deflection abutment is a roller arrangement on at least one of the two elongated arms to cooperate with the fixed jaw at the pivot for bending rods.

21. A method according to claim 20 wherein the bending arch extends across the pivot such that the pivoting two elongated arms can extend from substantially linear to substantially perpendicular.