Abstract
A die (1) for mounting in an associated die holder (20) for the production of heads on elongate bodies such as nails or screws. The die has a body (2) with a top surface (3) provided with a through-going groove (4) for receiving and holding an elongate body longitudinally in said groove. Furthermore, the die has a recess (5) on one side merging into the groove (4) at one end of the groove (4) suitable for forming the head of a nail or screw. The die has a side surface portion, e.g. conical, shaped for press fit by contact with a corresponding inner surface portion of a bore or hole (30) in the associated die holder. Further, a second side surface portion (9), e.g. a plane portion, of the die serves to engage with a corresponding inner surface portion of the bore or hole of the die holder. Hereby, it is ensured, that angular orientation of the groove (4) is fixed relative to the die holder (20), and it has been proven that the two different side surface portions of the die, e.g. with a conical portion and a plane portion, provides an efficient press fit which ensures a long lifetime of the die. Further, the die is very simple to mount in the die holder, e.g. by hand, and it is simple to eject by a tool. Thus, altogether a highly efficient nail production can be obtained with such die and die holder system.
Claims
1. A die (1) for mounting in an associated die holder for the production of heads on elongate bodies (40), the die comprising: a body (2) with a top surface (3) provided with a through-going groove (4) for receiving and holding an elongate body longitudinally in said groove, a recess (5) at one end of the groove suitable for forming the head on the elongate body, a side surface (6) comprising a first portion with a curved shaped arranged for press fit by contact with a curved portion of an inner surface (29) of a bore or hole (30) in the associated die holder, and a stop surface (7) for engaging with a stop part (28) in the hole or bore of the associated die holder, so as to determine a height of the die in relation to the associated die holder, wherein the side surface further comprises a second portion (9) shaped to engage with a corresponding portion of the inner surface of the bore or hole in the associated die holder, in order to guide angular orientation of the groove relative to the associated die holder, wherein the first portion of the side surface has a cylindrical shape or a conical shape, wherein the second portion of the side surface comprises a plane portion configured to engage with a corresponding plane portion of the inner surface of the bore or hole in the associated die holder, and wherein said plane portion forms an angle of 0.5-2.0° with a central axis of the die.
2. The die according to claim 1, wherein said second portion of the side surface is further arranged for press fit by contact with the corresponding portion of the inner surface (29) of the bore or hole (30) in the associated die holder.
3. The die according to claim 1, wherein an area of the second portion of the side surface is smaller than an area of the first portion of the side surface, such as the area of the second portion of the side surface being 10-40% of an area of the first portion of the side surface.
4. The die according to claim 1, wherein the side surface has chamfered portions interconnecting said first and second portions of the side surface.
5. The die according to claim 1, wherein a bottom part of the hole or bore of the associated die holder, is configured to receive an associated dummy element to engage with a bottom surface of the body of the die, so as to form the stop surface in cooperation with the bottom part of the hole or bore of the associated die holder.
6. A machine for producing heads on elongated bodies (40), the machine comprising at least one die according to claim 1.
7. The machine according to claim 6, comprising a head forming mechanism arranged to apply a force onto the elongate body at the recess end of the groove of the die, when the elongate body is fixated by the groove of the die, so as to form a head on the elongate body shaped according to the recess of the die.
8. The machine according to claim 6, wherein said first portion of the side surface of the at least one die has a conical shape, wherein the conical shaped portion of the side surface forms a first angle relative to a central axis of the die, and wherein each of the plurality of holes or bores (30) of the die holder has a first inner side surface portion with a conical shape which forms a second angle relative to a central axis of the holes or bores.
9. The machine according to claim 8, wherein the first angle is larger than the second angle, such as the first angle being 0.02°-0.10° larger than the second angle.
Description
BRIEF DESCRIPTION OF THE FIGURES
(1) The die according to the invention will now be described in more detail with regard to the accompanying figures. The figures show one way of implementing the present invention and is not to be construed as being limiting to other possible embodiments falling within the scope of the attached claim set.
(2) FIG. 1 is a trimetric view of a die embodiment.
(3) FIG. 2 is a frontal view of a die embodiment.
(4) FIG. 3 is a side view of a die embodiment.
(5) FIG. 4 is another trimetric view of a die embodiment.
(6) FIG. 5 is a trimetric view of a die holder with a mounted die embodiment.
(7) FIG. 6 is a trimetric view of a cross-section of a die holder and a mounted die embodiment.
(8) FIG. 7 is a top view of a section of a die holder embodiment.
(9) FIG. 8 is a trimetric view of a cross-section of a die holder and an unmounted die embodiment.
(10) FIG. 9 is a trimetric view of a cross-section of a die holder and amounted die embodiment.
(11) FIG. 10 is a side view of a cross-section of an elongate tool, placed in an opening of a die holder, between the die holder and a die, according to an embodiment.
(12) FIG. 11 is a trimetric view of an elongate body fixed between two corresponding dies and a section of a die holder.
(13) FIG. 12 is trimetric view of a section of a ring-shaped die holder with a mounted die and a corresponding, free-floating die to illustrate cooperation of recesses of two dies for producing a head on a nail.
(14) FIG. 13 is a side view of two ring-shaped die holders oriented towards each other, such as for forming part of a nail, in a nail producing machine.
(15) FIG. 14 is a flow-chart of a method according to the invention.
(16) FIG. 15a and FIG. 15b are trimetric views of alternative die embodiments.
(17) FIG. 16a and FIG. 16b are trimetric views of other alternative die embodiments.
(18) FIG. 17a and FIG. 17b are trimetric views of yet other alternative die embodiments.
DETAILED DESCRIPTION OF EMBODIMENTS
(19) FIG. 1 is a trimetric view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The die 1 comprises a body 2 with a top surface 3. The top surface has a through-going groove 4 suitable for receiving and holding the elongate body longitudinally in the groove 4. The groove 4 may have gripper marks (not visible) for increased friction with the elongate body to improve the holding effect. The body 2 of the die 1 has a side surface 6 comprising a first, substantially round portion and a second portion 9. The second portion 9 has a recess 5, which extends from the second portion 9 and merges into the groove 4. The recess 5 is shaped to form half of the head on the elongate body. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The die 1 has a bottom surface 7 with a chamfer 10 for easy mounting of the die 1 into the hole or bore of the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability and furthermore serves to engage with a corresponding flat surface of the associated die holder, in order to fix angular orientation of the groove 4 relative to the associated die holder. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion 11′ is positioned, interconnecting the first portion of the side surface 6 with the second portion 9. In some embodiments of the die 1, the first and second chamfered portions 11, 11′ extends from the bottom surface 7 to the top surface 3 of the die 1. On the bottom surface 7, a groove 75 has been cut into the body 2 of the die 1, extending from the bottom surface 7 to the second portion 9 of the side surface 6. The purpose of this groove 75 is to allow an associated elongate tool (not shown) with a tip matching the groove 75 to engage with the groove in order to push the die 1 upwards, when press fit mounted in an associated die holder 20. Especially, such elongate tool can be inserted in an opening in the associated die holder 20 and thus facilitate removing the die for replacement.
(20) In some embodiments, the inclined groove 75 is a plane surface being parallel with an axis perpendicular to the central axis, as shown in FIG. 2 and FIG. 3, of the die 1. The angle of inclination is preferably 2°-20°. The inclined plane surface helps to provide a force in an upward direction to drive out the die 1 from a die holder. The tool preferably has a tip with an inclination angle matching the inclination angle of the plane surface of the groove 75.
(21) FIG. 2 is a side view of a die 1 embodiment having a conical shaped side surface 6. The figure illustrates the body 2 of the die 1 when viewed directly towards the second portion 9 of the side surface 6. The second portion has a recess 5, which merges into the groove 4 on the top surface 3 of the die 1. The recess 5 is substantially round, shaped so at to form half of the head of a nail or screw. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion 11′ is positioned, interconnecting the first portion of the side surface 6 with the second portion 9. The side surface 6 of the die 1 is angled, suitable for press fitting into a corresponding shape of an associated die holder. The angle of the side surface 6 with a central axis (dotted line) of the body 2 is between one and two degrees in this particular embodiment, but could be in the range of a tenth of a degree to 5 degrees. The bottom surface 7 of the die 1 is chamfered 10 for easy insertion and guiding of the die 1 into the die holder. In some embodiments of the die 1, the first and second chamfered portions 11, 11′ extends from the bottom surface 7 to the top surface 3 of the die 1. On the bottom surface 7, a groove 75 has been cut into the body 2 of the die 1, extending from the bottom surface 7 to the second portion 9 of the side surface 6.
(22) FIG. 3 is another side view of a die 1 embodiment having a conical shaped side surface 6. The figure illustrates the body 2 of the die 1 when viewed perpendicular, relative to the second portion 9 of the side surface 6. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion (not shown) is positioned, interconnection the first portion of the side surface 6 with the second portion 9. The side surface 6 of the die 1 is angled, suitable for press fitting into a corresponding shape of an associated die holder. The angle of the side surface 6 with a central axis (dotted line) of the body 2 is between one and two degrees in this particular embodiment, but could be in the range of a tenth of a degree to 5 degrees. The bottom surface 7 of the die 1 is chamfered 10 for easy insertion and guiding of the die 1 into the die holder.
(23) FIG. 4 is another trimetric bottom view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The body 2 of the die 1 has a side surface 6 comprising a first, substantially round portion and a second portion 9. The second portion 9 has a recess 5, shaped to form half of the head on the elongate body. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The die 1 has a bottom surface 7 with a chamfer 10 for easy mounting of the die 1 into the hole or bore of the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability and furthermore serves to engage with a corresponding flat surface of the associated die holder, in order to fix angular orientation of the die 1, relative to the associated die holder. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion 11′ is positioned, interconnecting the first portion of the side surface 6 with the second portion 9. On the bottom surface 7, a groove 75 has been cut into the body 2 of the die 1, extending to the second portion 9 of the side surface 6.
(24) FIG. 5 is a trimetric view of a section of a die holder 20 with a mounted die 1. The figure illustrates a mounted die 1 and a section of a rings-shaped die holder 20. A side surface 22 (not visible) of the die holder 20 is furthermore plane in respect to the second portion 9 of the side surface of the die 1, wherein the recess 5 of the die 1 for shaping the head of the elongate body is placed. On a third surface 23 of the die holder 20, parallel to the top surface 21 of the die holder 20, a pin or bolt 24 is seated for mounting the die holder 20 to a machine (not shown).
(25) FIG. 6 is a trimetric view of a section of a die holder 20 with a mounted die 1. The figure illustrates a section of a rings-shaped die holder 20 with a cross-section view of the die holder 20 and a mounted die 1. The top surface 3 of the die 1 and the top surface part 21 of the die holder 20 are plane in respect to each other. A side surface 22 (not visible) of the die holder 20 is furthermore plane in respect to the second portion 9 of the side surface of the die 1, wherein the recess 5 of the die 1 for shaping the head of the elongate body is placed. On the inner side 25 of the die holder 20, an opening 26 is located, the opening 26 extending to the bottom surface 7 of the die 1. In this particular embodiment, a plug 45 has been inserted into the opening 26 of the die holder 20.
(26) FIG. 7 is a top view of a section of a ring-shaped die holder 20, according to the invention. In the middle of the figure, the bore 30 in the top surface 21 of the die holder 20 is located. In the bottom surface 28 of the die holder 20, the opening 26 of die holder 20 is visible. On a third surface 23 of the die holder 20, parallel to the top surface 21, a pin or bolt 24 is seated for mounting the die holder 20 to a machine (not illustrated).
(27) Preferably, the die holder 20 is a monolithic element made of metal, preferably a metal, which is softer than the metal or other material which forms the associated dies to be press fit in the holes or bores 30. The dies are preferably made of a hard material, e.g. a hard metal, to provide a long lifetime. By the press fitting principle, the hard material die is securely fastened in the hole or bore 30, thus providing optimal support of the edge of the hard material die, thereby providing a long life time of the die.
(28) The holes or bores 30 each has an inner surface shaped for receiving a die and for press fit by contact with the side surface of the die. In the hole or bore 30, a stop part is formed so as to allow engagement with a stop surface of the die when the die is being pressed into the hole or bore, so as to fix a height of a top surface of the die in relation to the top surface part of the die holder 20. Further, the die holder 20 has a protrusion or recess serving to engage with a corresponding recess or protrusion of the die, in order to fix angular orientation of the die relative to the die holder, thereby facilitating precise angular orientation of the die during the mounting in the die holder 20, e.g. after replacement of the die.
(29) FIG. 8 is a trimetric view of a section of a die holder 20 with an unmounted die 1. The figure illustrates a section of a rings-shaped die holder 20 with a cross-section view of the die holder 20 and an unmounted die 1, floating above a bore 30 in the top surface 21 of the die holder 20. The floating die 1 has a bottom surface 7 corresponding to a bottom surface 28 of the die holder 20. The top surface 3 of the die 1 and the surface part 21 of the die holder 20 are plane in respect to each other when the stop or bottom surface 7 of the die 1 is abutting the bottom surface 28 of the die holder 20.
(30) FIG. 9 is a side view of a cross-section of a die holder 20 and die 1, the die 1 mounted into the bore in the die holder 20. The die 1 has a side surface 6 shaped for press fit by contact with a corresponding inner surface of the bore in the die holder 20. The press fit serves to interlock the die 1 within the bore 30 of the die holder 20. When the bottom surface 7 of the die 1 abuts with the bottom surface 28 of the die holder 20, the top surface 3 of the die 1 becomes flush or plane with the top surface 21 of the die holder 20.
(31) FIG. 10 is a side view of a cross-section of an elongate tool 50, placed in an opening of a die holder 20, between the die holder 20 and a die 1, according to the invention. The elongate tool has a tapered tip 52 abutting the bottom surface 7 of the die 1. When the elongate tool 50 is forced towards the die 1, the die 1 is forced away from the die holder 20, releasing the die 1 from the die holder 20 for maintenance of the die holder 20 or die 1.
(32) FIG. 11 is a trimetric view of an elongate body 40 fixed between two corresponding dies 1, 1′ and a section of a ring-shaped die holder 20. The recesses 5, 5′ on each die 1, 1′ forms the shape of the head of a nail, when the two dies 1, 1′ are positioned with their corresponding top surfaces facing towards each other and their grooves aligned and the head end 40′ of the elongate body 40 is pressed in a longitudinal direction, towards the recesses 5, 5′ of the dies 1, 1′.
(33) FIG. 12 is a trimetric view of two corresponding dies 1, 1′ and a section of a ring-shaped die holder 20. In the illustration, one die 1 is mounted in the die holder 20 and the second die 1′ is floating, as how it would be mounted in a second die holder (not shown), and wherein the top surfaces of the dies 1, 1′ are abutting each other. The recesses 5, 5′ on each die 1, 1′ forms the shape of the head of a nail, when the two dies 1, 1′ are positioned with their corresponding top surfaces facing towards each other and their grooves are aligned.
(34) FIG. 13 is a trimetric view of two ring-shaped die holder embodiments 20, 20′ oriented towards each other. The ring-shaped die holders 20, 20′ have a central axis of rotation 100, about which they are arranged to rotate. A plurality of dies 1 are positioned within the die holders 20, 20′ around the circumference. The dies 1 are mounted on each of the die holders 20, 20′ are arranged facing towards each other. Especially, one of the die holders 20, the bores or holes for the dies are parallel with the axis of rotation 100, while on the other die holder 20′, the bores or holes for the dies are slightly angled. It is to be understood, that the position and angle of the die holders 20, 20′ are configured so as to be closer at one point, such as at the bottom portions, than at the top portions, to enable the plurality of dies 1 of a first die holder 20, to abut with corresponding dies of the opposite die holder 20′.
(35) FIG. 14 is a flow-chart of a method embodiment for manufacturing a head on an elongate body, such as metal nails or screws, the method comprising: e. providing S1 first and second die holders 20, 20′, each of the first and second die holders comprising: i. a body having at least a surface part 21, ii. a hole or bore 30 in the surface part, wherein the hole or bore has a first inner surface portion 29 with a curved shaped and arranged for receiving the die and for press fit by contact with a first side surface portion 6 of the die, iii. a stop part 28 located in the hole or bore for engaging with a bottom surface 7 of the die when being pressed into the hole or bore, so as to fix a height of the top surface 3 of the die in relation to the surface part of the die holder, and iv. a second inner surface portion of the bore or hole engaging with a corresponding second side surface portion of the die, in order to fix angular orientation of the groove 4 of the die relative to the die holder, f. providing S2 first and second dies 1, 1′, each of the first and second dies comprising: vi. a body 2 with a top surface provided with a through-going groove for receiving and holding an elongate body longitudinally in said groove, vii. a recess 5 at one end of the groove suitable for forming the head on the elongate body, viii. a first side surface portion with a curved shape for press fit by contact with a first inner surface portion of a bore or hole in the associated die holder, ix. a stop surface for engaging with a stop part in the hole or bore of the associated die holder, so as to determine a height of the top surface of the die in relation to a surface part of the associated die holder, and x. a second side surface portion serving to engage with the corresponding second inner surface portion of the die holder, in order to fix angular orientation of the groove relative to the die holder, g. bringing S3 the top surface of the first die 1 so near to the top surface of the second die 1′ that the grooves of the first and second dies hold the elongate body, and h. providing S4 force onto the elongate body at the recess end of the grooves so as to form a head on the elongate body.
(36) FIG. 15a and FIG. 15b are trimetric views of alternative die embodiments.
(37) FIG. 15a is a trimetric view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The die 1 comprises a body 2 with has a side surface 6 comprising a first, substantially round portion and a second portion 9. The second portion 9 has a large surface area relative to some embodiments of the die 1. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability and furthermore serves to engage with a corresponding flat surface of the associated die holder, in order to fix angular orientation of the die 1, relative to the associated die holder. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion 11′ is positioned, interconnecting the first portion of the side surface 6 with the second portion 9. In some embodiments of the die 1, the first and second chamfered portions 11, 11′ extends from a bottom surface to a top surface of the die 1.
(38) FIG. 15b is a trimetric view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The die 1 comprises a body 2 with has a side surface 6 comprising a first, substantially round portion and a second portion 9. The second portion 9 has a small surface area relative to some embodiments of the die 1. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability and furthermore serves to engage with a corresponding flat surface of the associated die holder, in order to fix angular orientation of the die 1, relative to the associated die holder. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion 11′ is positioned, interconnecting the first portion of the side surface 6 with the second portion 9. In some embodiments of the die 1, the first and second chamfered portions 11, 11′ extends from a bottom surface to a top surface of the die 1.
(39) FIG. 16a and FIG. 16b are trimetric views of other alternative die embodiments.
(40) FIG. 16a is a trimetric view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The die 1 comprises a body 2 with has a side surface 6 comprising a first, substantially round portion and a second portion 9. The second portion 9 has a large surface area relative to some embodiments of the die 1. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability and furthermore serves to engage with a corresponding flat surface of the associated die holder, in order to fix angular orientation of the die 1, relative to the associated die holder. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion 11′ is positioned, interconnecting the first portion of the side surface 6 with the second portion 9. The chamfered portions have a small surface area, relative to some embodiments of the die 1. In some embodiments of the die 1, the first and second chamfered portions 11, 11′ extends from a bottom surface to a top surface of the die 1.
(41) FIG. 16b is a trimetric view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The die 1 comprises a body 2 with has a side surface 6 comprising a first, substantially round portion and a second portion 9. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability and furthermore serves to engage with a corresponding flat surface of the associated die holder, in order to fix angular orientation of the die 1, relative to the associated die holder. On the side surface 6 of the body 2 of the die 1, a first chamfered portion 11 and a second chamfered portion 11′ is positioned, interconnecting the first portion of the side surface 6 with the second portion 9. The chamfered portions have a large surface area, relative to some embodiments of the die 1. In some embodiments of the die 1, the first and second chamfered portions 11, 11′ extends from a bottom surface to a top surface of the die 1.
(42) FIG. 17a and FIG. 17b are trimetric views of yet other alternative die embodiments.
(43) FIG. 17a is a trimetric view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The die 1 comprises a body 2 with has a side surface 6 comprising a first, substantially round portion and a second portion 9. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability and furthermore serves to engage with a corresponding flat surface of the associated die holder, in order to fix angular orientation of the die 1, relative to the associated die holder.
(44) FIG. 17b is a trimetric view of a die 1 embodiment. The figure illustrates a die 1 for mounting in an associated die holder (not shown) for the production of heads on elongate bodies, such as a metal nail or screw. The die 1 comprises a body 2 with has a side surface 6 comprising a first, substantially round portion, a second portion 9 and a third portion 9′. The side surface 6 is shaped for press fit by contact with an inner surface of a bore or hole in the associated die holder. The second portion 9 of the side surface 6 is flat for higher durability during nail production. The third portion 9′ of the side surface 6 is curved and serves to engage with a corresponding curved surface of the associated die holder, in order to fix angular orientation of the die 1, relative to the associated die holder. In some embodiments, the curvature of the side surface 6 and the curvature of the third portion 9′ are substantially identical. In this particular embodiment, the curvature of the side surface 6 and the curvature of the third portion 9′ are different.
(45) To sum up, the invention provides a die 1 for mounting in an associated die holder 20 for the production of heads on elongate bodies such as nails or screws. The die has a body 2 with a top surface 3 provided with a through-going groove 4 for receiving and holding an elongate body longitudinally in said groove. Furthermore, the die has a recess 5 on one side merging into the groove 4 at one end of the groove 4 suitable for forming the head of a nail or screw. The die has a side surface portion, e.g. conical, shaped for press fit by contact with a corresponding inner surface portion of a bore or hole 30 in the associated die holder. Further, a second side surface portion (9), e.g. a plane portion, of the die serves to engage with a corresponding inner surface portion of the bore or hole of the die holder. Hereby, it is ensured, that angular orientation of the groove 4 is fixed relative to the die holder 20, and it has been proven that the two different side surface portions of the die, e.g. with a conical portion and a plane portion, provides an efficient press fit which ensures a long lifetime of the die. Further, the die is very simple to mount in the die holder, e.g. by hand, and it is simple to eject by a tool. Thus, altogether a highly efficient nail production can be obtained with such die and die holder system.
(46) Although the present invention has been described in connection with the specified embodiments, it should not be construed as being in any way limited to the presented examples. The scope of the present invention is set out by the accompanying claim set. In the context of the claims, the terms “comprising” or “comprises” do not exclude other possible elements or steps. Also, the mentioning of references such as “a” or “an” etc. should not be construed as excluding a plurality. The use of reference signs in the claims with respect to elements indicated in the figures shall also not be construed as limiting the scope of the invention. Furthermore, individual features mentioned in different claims, may possibly be advantageously combined, and the mentioning of these features in different claims does not exclude that a combination of features is not possible and advantageous.
