Title:
LINKING SYSTEM FOR PRODUCING A LINK BETWEEN BUILDING ELEMENTS
Kind Code:
A1


Abstract:
The invention concerns a linking system (10) for fixing building elements (20, 30) such as natural or artificial stones. The linking system (10) comprises: a first dowel (60) having a first internal orifice (80) comprising a first hole axis, and which is introduced into a first building element (20) by being adapted to be fixed into a first hole (40) which has a first hole axis; and a second dowel (70) having a second internal hole (90), and which is introduced into a second building element (30) by being adapted to be fixed into a second hole (50) which has a second hole axis. Between the first dowel (60) and the second dowel (70) is provided a sleeve (100) wherein a rod (110) is inserted.



Inventors:
Philipp, Franz Josef (Hasselroth, DE)
Application Number:
12/064298
Publication Date:
02/24/2011
Filing Date:
08/20/2005
Assignee:
FIRST VANDALIA LUXEMBOURG HOLDING S.A. (LUXEMBOURG, DE)
Primary Class:
Other Classes:
52/704
International Classes:
E04B1/38
View Patent Images:
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Primary Examiner:
MICHENER, JOSHUA J
Attorney, Agent or Firm:
24IP LAW GROUP USA, PLLC (Annapolis, MD, US)
Claims:
1. A linking system for fixing a first building element and a second building element comprising; a first dowel with a first dowel inner hole with at least a first dowel inner hole axis, which is attachable in a first hole with a first hole axis, a second dowel with a second dowel inner hole with at least a second dowel inner hole axis, which is attachable in a second hole with a second hole axis in a second building element inserted therein, between the first dowel and the second dowel a sleeve with a inner sleeve radius and a outer sleeve radius, and a rod, insert-able in the sleeve, with a rod radius.

2. A linking system according to claim 1, wherein at least one of the first and the second dowel comprises a dowel upper part and a dowel lower part wherein the dowel upper part and the dowel lower part for linking the first with the second building element builds a connected component.

3. A linking system according to claim 1, in at least one of the first and the second dowel comprises a dowel upper part and a dowel lower part, whereby the dowel upper part and the dowel lower part are separate components before linking the first with the second building elements.

4. A linking system according to claims 1, wherein at least one of the dowel inner hole, of the first dowel upper part and the second dowel upper part and the dowel inner hole of the first dowel upper part and the second dowel lower part has a upper part that is conically tapered.

5. A linking system according to claim 1, whereby at least one of the dowel inner hole of the first dowel and the second dowel comprises, an upper dowel inner hole in upper dowel part with an upper dowel inner hole radius and an upper dowel inner hole axis and a lower dowel inner hole in lower dowel part with a lower dowel inner hole radius and a lower dowel inner hole axis, wherein the upper dowel inner hole radius is greater than the lower dowel inner hole radius.

6. A linking system according to claim 1, for which the upper dowel inner hole axis and the lower dowel inner hole axis of the first dowel coincides with the axis of the first hole, in the first dowel is inserted, into which the first dowel is inserted, and at least one of the upper dowel inner hole axis and the lower dowel inner hole axis coincides with the axis of the second hole into which the second dowel is inserted.

7. A linking system according to claim 1, whereby at least one of the upper dowel inner hole axis and the lower dowel inner hole axis of the first dowel is slightly eccentric to the axis of the first hole, into which the first dowel is inserted and at least one of the upper dowel inner hole axis and at least one of the lower dowel inner hole axis of the second dowel is slightly eccentric to the axis of the second hole into which the second dowel is inserted.

8. A linking system according to claim 1, whereby the upper dowel inner hole axis and the lower dowel inner hole axis, the first dowel coincide and the upper dowel inner hole axis and the lower dowel inner hole axis of the first dowel is slightly to eccentric with respect to the axis of the first hole, in which the first dowel is inserted, and at least one of the upper extremity of the dowel inner hole axis and the lower dowel inner hole axis of the second dowel coincide and the upper extremity of the dowel inner hole axis and the lower dowel inner hole axis of the second dowel is slightly eccentric to the axis of the second hole in which the second dowel is inserted.

9. A linking system according to claim 1, whereby the upper dowel inner hole axis of the first dowel and the axis of the first hole coincides into which the first dowel is inserted, and lower dowel inner hole axis of the first dowel is eccentric to the upper dowel inner hole axis of the first dowel and the axis of the first hole and at least one of the upper dowel inner hole axis of the second dowel and the axis of the second hole coincide, into which second dowel is inserted and the lower dowel inner hole axis of the second dowel is eccentrically to the upper dowel inner hole axis of the second dowel and the axis of the second hole.

10. A linking system according to claim 1, wherein the dowel inner hole axis of the first dowel is slightly inclined to a normal of a surface of a the first hole in the first building element, in which the first dowel is inserted, and at least one of the dowel inner hole axis of the second dowel is slightly inclined to a normal of a surface of the second hole in the second building element, into which the second dowel is inserted.

11. A linking system according to claim 1, wherein the axis of the first hole in the first building element is slightly inclined to the normal of the surface of the first hole in the first building element in that the first dowel is inserted and at least one of the axis of the second hole in the second building element which is slightly inclined to normal of the surface of the second hole in the second building element into which the second dowel is inserted.

12. A linking system according to claim 1, whereby the first dowel inner hole axis is slightly inclined to the axis of the first hole in the first building element into which the first dowel is inserted and at least one of the second dowel inner hole axis slightly inclined to the axis of the second hole in the second building element into which the second dowel is inserted.

13. A linking system according to claim 1, wherein at least one of the first and or the second dowel comprise a fastening retaining hook.

14. A linking system according to claim 1, for which one or more or a plurality of sleeves are manufactured from wood, plastic or metal.

15. A linking system according to claim 1, wherein one or more sleeves are made of steel.

16. A linking system according to claim 1, wherein one or more of the rods are made of wood, plastic or metal.

17. A linking system according to claim 1, wherein one or more rods is made of steel.

18. A linking system according to claim 1, wherein one or more dowels are made of wood, plastic or metal.

19. A linking system according to claim 1, wherein one or more dowels are made of polyethylene.

20. A linking system according to claim 1, wherein the one or more dowels is manufactured from polyethylene and the dowel comprises silica particles.

21. A dowel for the application in a linking system, the linking system comprising; a first dowel with a first dowel inner hole with at least a first dowel inner hole axis, which is attachable in a first hole with a first hole axis, a second dowel with a second dowel inner hole with at least a second dowel inner hole axis, which is attachable in a second hole with a second hole axis in a second building element inserted therein, between the first dowel and the second dowel a sleeve with a inner sleeve radius and a outer sleeve radius, and a rod, insert able in the sleeve, with a rod radius.

22. A sleeve for application in a linking system, the linking system comprising; a first dowel with a first dowel inner hole with at least a first dowel inner hole axis, which is attachable in a first hole with a first hole axis, a second dowel with a second dowel inner hole with at least a second dowel inner hole axis, which is attachable in a second hole with a second hole axis in a second building element inserted therein, between the first dowel and the second dowel a sleeve with a inner sleeve radius and a outer sleeve radius, and a rod, insert able in the sleeve, with a rod radius.

23. A rod for application in a linking system, the linking system comprising; a first dowel with a first dowel inner hole with at least a first dowel inner hole axis, which is attachable in a first hole with a first hole axis, a second dowel with a second dowel inner hole with at least a second dowel inner hole axis, which is attachable in a second hole with a second hole axis in a second building element inserted therein, between the first dowel and the second dowel a sleeve with a inner sleeve radius and a outer sleeve radius, and a rod, insert able in the sleeve, with a rod radius.

24. A link for building elements effected by a plurality of linking systems, the linking system comprising; a first dowel with a first dowel inner hole with at least a first dowel inner hole axis, which is attachable in a first hole with a first hole axis, a second dowel with a second dowel inner hole with at least a second dowel inner hole axis, which is attachable in a second hole with a second hole axis in a second building element inserted therein, between the first dowel and the second dowel a sleeve with a inner sleeve radius and a outer sleeve radius, and a rod, insert able in the sleeve, with a rod radius.

25. A link for building elements effected by a plurality of linking systems according to claim 24, whereby the linking systems are rotated against each other and the linking systems comprise; a first dowel with a first dowel inner hole with at least a first dowel inner hole axis, which is attachable in a first hole with a first hole axis, a second dowel with a second dowel inner hole with at least a second dowel inner hole axis, which is attachable in a second hole with a second hole axis in a second building element inserted therein, between the first dowel and the second dowel a sleeve with a inner sleeve radius and a outer sleeve radius, and a rod, insert able in the sleeve, with a rod radius.

26. A construction comprising a first building element and a second building element, whereby the first building element and the second building element for one or a plurality of linking systems are held together, wherein the linking system comprises; a first dowel with a first dowel inner hole with at least a first dowel inner hole axis, which is attachable in a first hole with a first hole axis, a second dowel with a second dowel inner hole with at least a second dowel inner hole axis, which is attachable in a second hole with a second hole axis in a second building element inserted therein, between the first dowel and the second dowel a sleeve with a inner sleeve radius and a outer sleeve radius, and a rod, insert able in the sleeve, with a rod radius.

Description:

FIELD OF THE INVENTION

The invention relates to a linking system for producing a link between at least two building elements.

BACKGROUND OF THE INVENTION

In the art of linking there are known a number of linking systems, for example for linking building elements such as natural or artificial stones and beams from wood or metal. In house building, load-bearing walls are often made of brick stones, the brick stones being linked with mortar made of cement. The result is a rigidly linked wall, the wall being relatively inelastic. The inelasticity of the links makes such walls susceptible to vibrations and shocks caused by earth quakes, for example.

The construction of mortared brick walls comprises, in addition to laying the brick stones, the step of preparing the mortar, a step of applying the mortar to the brick stones and the step of letting the mortar set during which the linking between the building elements is formed. The step of applying the mortar must occur within a predetermined time span after preparation of the mortar and before the mortar starts setting. The laying of brick stones is restricted to a number of rows, for further rows of brick stones can be laid on top of those brick stones which are linked by the set mortar. This causes delays because of during the construction work.

Environmental factors are further restricting for the use of mortar, for example the typical temperature for using mortar made of cement being above 5° C. Temperatures below 0° C. pose a problem because the water which is normally used for the preparation of the mortar freezes. Furthermore, the properties and use of certain mortars are subject to higher temperatures and humidity.

The position of the individual brick stones is determined by their positioning during their laying. Therefore, in order to obtain an accurate wall, certain craftsmanship is necessary and an expensive trained workforce required.

Nowadays, the building elements of inner and/or non-load-bearing walls are often linked by means of glue. Restrictions for the use of glue are similar to the ones discussed above in connection with the use of mortar.

Especially in the field of Do-It-Yourself, there are number of systems for inner walls with positioning devices, the positioning devices being operative for positioning the building elements relative to each other. Those positioning devices, for example tongue and groove systems, must be arranged on the building elements while those building elements are being produced. Then, on the construction site the thus formed building elements can then be joined and linked for example with glue.

Links without glue of building elements are for example known from wooden links. Number of different pin links for example are known in the art of joinery, for example dove tailings which allows an interlocking link between two building elements. The use of glue-free dowel linkings is also known for wooden building elements. German Patent DE 1 107 910 teaches a link between two building elements, the link being effected by a pliable dowel. The pliable dowel is introduced in two holes in two building elements. The axis of the holes are slightly slanted relatively to the normals of the surfaces of the building elements. The holes in the building elements form an obtuse angle, and pressure is exerted on the building elements and the dowel is bent according to this obtuse angle. Preferably, one uses two or more dowels. The inclination of the hole axis towards the surface points into another direction than the inclination of the corresponding hole axis of the hole in the abutting building element. The teaching of the '910 patent is restricted to wooden materials. The '910 patent is especially concerned with the problem of enclosures of air between the dowel and the hole which may result in a link bursting in an explosive manner in case rising ambient temperature causes the enclosed air to expand. The '910 patent discloses a method according to which such severance of the link can be avoided by milling structures within the dowel.

Bolt-like linking systems are very versatile. A problem with those linking systems is the accessibility of the head of the bolts and nuts, for example when a plurality of rows of building elements like building blocks are joined in order to form a wall. The underside of a building block is not easily accessible once the rows have been fixed. A further problem is the loosening of bolt-like links. Furthermore access to bolts which happen inserted along the direction to which the wall proceeds while being constructed is no longer possible once the wall has been finished.

Problems with accessibility to bolt heads and nuts and possible positions for the bolts have led to solutions as disclosed in the European patent application EP-A-1 389 687. Application '687 teaches a system for linking building elements in which special linking elements are arranged on the building elements. The linking elements are fixed to the building elements by means of bolts before the building elements are being linked. While assembling the building elements the linking elements effect mashing of the building elements, rendering a non-destructive disassembling of the building elements after their assembly next to impossible. Such systems can be used for the construction of prefabricated houses as disclosed in German patent DE-A-100 266 769. The '769 patent teaches utilising such linking elements for buildings intended for long, as well as medium-term use, for example makeshift housings after earthquakes or military barracks. The patent emphasises advantages in assembling time, costs and the possibility to build houses with less trained workers in contrast to the method like erecting a brick stone wall using mortar.

The disadvantages of the systems as disclosed in the '769 and the '687 patents are that both systems add further linking elements to the building elements. Those linking elements themselves are rather complicated.

Another solution for a mortar-free method for erecting brick stone walls is given by the bolt-like linking system for building systems disclosed in European patent application EP-A-1 382 761. Proceeding from similar problems as the '769 patent, the '761 application teaches a linking system wherein starting from a basis plate individual brick stones are secured to the row of brick stones above and below. According to one aspect they are arranged in a lower female thread in the upper fixing means. Lower fixing means start from the base plate, the lower fixing means having a length substantially equal to the height of a brick stone and being arranged with a male upper thread. Brick stones have holes arranged to receive the lower fixing means of the fixing system. Whilst laying one row, the lower fixing means are inserted through the holes of the brick stones. The upper fixing means are bolted to the lower fixing means. The upper part of the upper fixing means is arranged such as to be usable as lower fixing means for the next row. The '761 application discloses a system allowing non destructive disassembling and reassembling of the building elements. According to a preferred aspect, the '761 application discloses positioning devices in order keep the brick stones in place. The '761 application is directed to brick stone walls, facades or buildings having wooden frame constructions. The '761 application does not disclose information about the load-bearing capacities of the walls.

OBJECTIVE OF THE INVENTION

It is therefore an objective of the invention, to provide a versatile stable linking system for different kinds of building elements.

It is a further objective of the invention to provide a link between building elements, allowing an elastic relative motion of the building elements.

It is a further objective of the invention to provide a linking system for quick and efficient construction of buildings such as houses under difficult environmental conditions.

These and other objectives are addressed by providing a linking system for linking the first building element and the second building element. The linking system comprises a first dowel with a first dowel inner hole having a first dowel inner hole axis, fixingly inserted in a first hole with a first hole axis in a first building element, and a second dowel with a second dowel inner hole having a second dowel inner hole axis fixably inserted in a second hole with a second hole axis of a second building element. A sleeve with an inner and outer sleeve radius is being inserted between the dowels into the first dowel inner hole and the second dowel inner hole. The rod with a rod radius is inserted into the sleeve.

Using of the linking system according to the invention allows linking building elements of a plurality of materials for sufficiently stable boreholes. The materials for the dowel, the sleeve and the rod are adaptable with respect to the structure, for example the surface structure.

Materials for the dowel, the sleeve and the rod are adaptable with respect to the properties such as elasticity to the materials of the building elements. The diameter of the boreholes is in a range that allows an efficient drilling of holes into the material of the building elements.

The motion of the linked building elements is mainly determined by the elastic properties of the link, as the link between the building elements is only effected by the linking systems at certain points as well as by frictional forces between the linked building elements. In particular the elastic properties of those links are adaptable in connection with the materials used for the linking systems. This elastic construction of non-rigid walls is particularly suitable for walls in areas prone to earthquakes.

The use of the disclosed linking system is independent of the ambient temperature. The holes within the building elements can be provided either before being shipped to the construction site or on the spot. Assembling the building elements is suitable for untrained work forces. There is no need for waiting for the mortar to set.

The link can be for example effected by plying the rod and the sleeve into an obtuse angle. The resulting elastic forces in the plastic deformations within the linking system causes mashing the linking system with the building elements. The link can be effected by deformation of the sleeve and the rods by means of an eccentricity of an upper dowel hole axis with respect to a lower dowel hole axis. This causes the sleeves and the rods to be pressed against a wall of the dowel to a dowel wall, consequently holding the whole linking system with the building elements.

The link can be affected by deformations and tensions caused by the dowel inner hole axis of the building first dowel not coinciding with the dowel inner hole axis of the second dowel.

The linking can be affected by deformation and tension caused by, for example, compressing the sleeve dowel and rod, for example, by inserting the rod into a conically arranged dowel inner hole if, for example, the rod has a larger diameter than the conically arranged dowel inner hole of the corresponding depth of insertion.

DESCRIPTION OF THE FIGURES

FIG. 1 shows a disassembled linking system according to the invention.

FIG. 2a shows a two-part dowel for the linking system.

FIG. 2b shows a dowel upper part from FIG. 2a.

FIG. 2c shows a dowel lower part from FIG. 2a.

FIG. 3 shows an assembled linking system.

FIG. 4 shows a further example of an assembled linking system.

FIG. 5 shows an example of a dowel according to the invention.

FIG. 6 shows a further example of a dowel according to the invention.

FIG. 7 shows a further example of a dowel according to the invention.

FIG. 8 shows an example of a sleeve according to the invention.

FIG. 9a shows an example of a rod according to the invention.

FIG. 9b shows a further example of a rod according to the invention.

FIG. 9c shows two further examples of a rod according to the invention.

FIG. 10 shows four building elements linked according to the invention.

FIG. 11 shows a wall construction utilising the linking system according to the invention.

FIG. 12 shows a building constructed by means of the linking system according to the invention.

FIG. 13 shows a plurality of links according to the linking system according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a dissembled linking system 10 according to the invention. The first building element 20 is to be linked with a second building element 30. The first building element 20 and the second building element 30 may be of arbitrary building materials including but not restricted to stones, bricks, concrete or wood. A first hole 40 is drilled into the first building element 20 and a second hole 50 is drilled into the second building element 30. The first dowel 60 is inserted into the first hole 40 and a second dowel 70 is inserted into the second hole 50. The first dowel 60 has a first dowel inner hole 80 and the second dowel 70 has a second dowel inner hole 90.

According to a preferred aspect of the invention the first dowel 60 and the second dowel 70 are each divided in two sections. The first dowel 60 has a first dowel upper part 62 and a first dowel lower part 64. The first dowel upper part 62 abuts the surface of the first building element 20 and the first dowel lower part 64 is within the first building element 20. The first dowel upper part 62 and the first dowel lower part 64 are linked by a conical middle portion 66. The dowel inner hole diameter of the first dowel upper part 62 is greater than the dowel inner hole diameter of the first dowel lower part 64.

Similarly the second dowel 70 has a second dowel upper part 72 and a second dowel lower part 74. The second dowel upper part 72 abuts the surface of the second building element 30 and the second dowel lower part 74 is within the second building element 30. The second dowel upper part 72 and the second dowel lower part 74 are connected by a conical middle portion 76. The dowel inner hole diameter of the second dowel upper part 72 is greater than the dowel inner hole diameter of the second dowel lower part 74.

The first dowel upper part 62 and the second dowel upper part 72 are substantially the same length and are referred to by reference D in FIG. 1. Similarly the depth of the first hole 40 and the second hole 50 are substantially the same and are referred to by reference C.

A sleeve 100 is inserted into the first dowel inner hole 80 up to a depth of about ⅓ and a rod 110 is inserted into the second hole 50. The sleeve 100 is typically arranged as a hollow cylinder. Rod 110 is for example arranged as a hollow cylinder or as a solid cylinder.

In an exemplary aspect of the invention the first building element 20 and the second building element 30 are concrete slabs. The first dowel 60 and the second dowel 70 are made of plastic or some silica polymer. Silica particles can, for example, be added to a plastic, for example polyethylene, in order to furnish a silica based enforcement. The first dowel 60 and the second dowel 70 are provided with a ceramic coating. By means of the ceramic coating or the silica based enforcement are, for example suitable to increase the friction between the building elements 20 and 30, the dowel 60 and 70 and the sleeve 100 and the rod 110 where concerned.

The first dowel upper part 62 and the second dowel upper part 72 have length of 120 mm, a dowel inner hole diameter of 25.8 mm and a dowel outer diameter of 49.6 mm. The first dowel lower part 64 and the second dowel lower part 74 have a length of 80 mm, a dowel inner hole diameter of 20.2 mm and a dowel outer diameter of 49.6 mm. The rod 110 is made of St37 steel with a length of 398 mm and a diameter of 19 mm. The first hole 40 and the second hole 50 have a hole diameter of 50 mm and a depth of 200 mm.

The sleeve 100 is made of St37 steel having a sleeve inner diameter of 19.8 mm and a sleeve outer diameter of 25 mm and a length of 238 mm. The dimensions provided are exemplary and shall not be construed to limit the scope of the invention.

According to one aspect of the invention the first dowel 60 and the second dowel 70 are arranged as one piece. According to another aspect of the invention the first dowel 60 and the second dowel 70 are provided as two separate pieces corresponding to dowel upper parts 62 and 72 and the dowel lower parts 64 and 74. From a manufacturing point of view the two piece dowel is probably easier to produce.

FIG. 2a shows a further aspect of the invention according to which first dowel 60 as well as the second dowel 70 are arranged each as two piece dowels. According to this aspect of the invention the first dowel 60 is divided into a first dowel upper part 62 having a first upper dowel inner hole 82 and a first dowel lower part 64 having a first lower dowel inner hole 84, the first dowel upper part 62 and the first dowel lower part 64 being arranged each as separate pieces. Similarly, the second dowel 70 is divided into a second dowel upper part 72 having a second upper dowel inner hole 92 and a second dowel lower part 74 having a second lower dowel inner hole 84, the second dowel upper part 72 and the second dowel lower part 74 being arranged each as separate pieces. The first dowel upper part 62 and the second dowel upper part 72 having a length of 54 mm with an outer diameter of 44 mm and a dowel inner hole diameter of 21.5 mm. The first dowel lower part 64 and the second dowel lower part 74 having a length of 36 mm with an outer diameter of 44 mm and a dowel inner hole diameter of 18 mm. The dowel inner hole 82 of the first dowel upper part 62 and the dowel inner hole 84 of the first dowel lower part 64 are not coaxially arranged according to one aspect of the invention, i.e. the dowel inner hole axis 63 of the first dowel upper part 62 and the dowel inner hole axis 65 of the first dowel lower part 64 are offset against each other and the dowel inner hole axis 63 of the first dowel upper part 62 and the dowel inner hole axis 65 of the first dowel lower part 64 are eccentrically arranged. Similarly the dowel inner hole 92 of the second dowel upper part 72 and dowel inner hole 94 of the second dowel lower part 84 are not arranged coaxially according to one aspect of the invention, i.e., the dowel inner hole axis 73 of the second dowel upper part 72 and the dowel inner hole axis 75 of the second dowel lower part 74 are offset against each other and dowel inner hole axis 73, 75 are eccentrically arranged. For example, the dowel inner hole axis 63 of the first dowel upper part 62 and the dowel inner hole axis 73 of the second dowel upper part 72 or the dowel inner hole axis 65 of the first dowel upper part 64 and the dowel inner axis 75 of the second dowel lower part 74, respectively, may be shifted by about 1 mm against the respective hole axis of the work pieces, the respective dowel axis coinciding with the axis of the boreholes. The first dowel upper part 72 and the second dowel upper part 74 are rotated by 15° against the first dowel lower part 62 and the second dowel lower part 72, respectively in the first hole 40 and the second hole 50 respectively in order to link with the eccentricities. Furthermore, the eccentricities of the first dowel 60 and the eccentricities of the second dowel 70 may be rotatably arranged against each other. For the material of the first dowel 60 and the second dowel 70 polyethylene may be used having 8.9% silicate particles per weight. The linking system 10 and the rod 110 produced from steel, having a length of 180 mm and a diameter of 80 mm and a sleeve 100 made of steel having a sleeve inner diameter of 80 mm, a sleeve outer diameter of 21.5 mm and a length of 108 mm.

In FIG. 2b the dowel upper part 230 which corresponds to the dowel upper part 62, 72 in FIG. 2a are separately represented for the first or the second dowel. In FIG. 2c the dowel lower part 220 which corresponds to the dowel lower parts 64, 74 from FIG. 2a are separately represented for the first or the second dowel. According to the represented aspect of the invention, the dowel lower part 220 has tongues 232 ranged to engage with the grooves 222 of the dowel upper parts 230 in order to prevent a mutual rotation of the dowel upper parts 230 and the dowel lower parts 220.

FIG. 3 shows the assembled linking system 10 from FIG. 1. Rod 110 is completely inserted into sleeve 100. The rod 110 and the sleeve 100 held into position by forces (F) exerted by the first dowel 60 and the second dowel 70 on the sleeve 100.

FIG. 4 shows an aspect of the invention in which the dowel inner hole axis 63 of the first dowel upper part 62 and the dowel inner hole axis 65 of the first dowel lower part 64 and the dowel inner lower axis 73 of the second dowel upper part 72 and the dowel inner hole axis 75 of the second dowel lower part 74 are not coaxially arranged. In this manner, a stronger force is exerted on the sleeve 100.

Further aspects of the linking system according to the invention are shown in FIGS. 5 to 7. In these aspects of the invention the material used for the first dowel 60 and the second dowel 70 is polyethylene having 8.9% silicate particles per weight. The rod 110 (shown separately by example in FIG. 9a) is made of steel and has a length of 180 mm and a diameter of 18 mm. The sleeve 100 (shown separately by example in FIG. 8) is made from steel having a sleeve inner diameter of 18 mm and a sleeve outer diameter of 21.5 mm and a length of 108 mm. The first dowel 60 and the second dowel 70 each comprise a dowel upper part 62, 72 and a dowel lower part 64, 74. The first dowel lower part 64 and the second dowel lower part 74 each comprise retaining fastening hooks 240. The retaining fastening hooks 240 may be arranged as stays with a thickness of 3 mm and a width of 6 mm and a length of 33 mm, protruding from the first dowel lower part 64 and the second dowel lower part 74. There are two versions of the first dowel 60 and the second dowel 70 of the linking system 10;

Example 1

(FIG. 5): The dowel upper part 230 has a length of 55 mm and a dowel inner hole diameter 250, the dowel inner hole diameter 250 being arranged to conically taper from 24 mm to 21.5 mm and to remain constant at a value of 21.5 mm for the next 11 mm of its length and a dowel outer diameter of 44 mm. The dowel lower part 220 has a length of 33 mm, the dowel outer diameter 44 mm and the dowel inner hole diameter 225 conically tapering from 19 mm to 18 mm. Transition between the dowel upper part 230 and the dowel lower part 220 is arranged by means of a conically extending middle portion 255 having a length of 1 mm. The dowel lower part 220 may be arranged with a slit or slits.

Example 2

(FIG. 6): The dowel upper part 310 has a length of 55 mm and a dowel inner hole diameter 315 of 24 mm and a dowel outer diameter of 44 mm. The dowel lower part 320 has a length of 33 mm and a dowel inner hole diameter 325 of 18 mm and a dowel outer diameter of 44 mm. Transition between the dowel upper part 310 and the dowel lower part 320 is arranged by means of a conically extending middle portion 330 having a length of 3 mm. The dowel inner hole axis 301 of the dowel lower part 320 is shifted by 2 mm against the dowel inner hole axis 316 of the dowel upper part 310 corresponding to the dowel axis. According to this aspect of the invention the dowel axis is arranged to coincide with the hole axis. The positions of the axis are shown in cross sectional view in FIG. 6.

Example 3

Given the dimensions of the dowel 200 from the first example (FIG. 5) the dowel inner hole 415 of the dowel upper part 410 and the dowel inner hole 425 of the dowel lower part 420 is eccentrically offset against the dowel 400. That is the common axis 416 of an upper dowel inner hole 415 and a lower dowel inner hole 425 is offset, for example by 2 mm against the dowel axis 401 as shown in cross sectional view in FIG. 7. If dowel 400 is used in the linking system according to the invention, the dowel axis 401 would coincide with the hole axis. If dowel 400 is used as the first dowel 60 and as the second dowel 70 then the first dowel 60 and the second dowel 70 inserted into the first and second hole while being rotated against each other by 15°, i.e. the eccentricities of the common axis 416 of the first dowel 60 and the common axis 416 of the second dowel 70 are not aligned.

Three further aspects of the rod 110 are shown in FIGS. 9b and c. According to the aspect of the invention as shown in FIG. 9c the rod 110 has a lengthways groove 810 as shown in more detailed in FIG. 9c. The rod 110 has an outer diameter of 18 mm. The depth (3.5 mm) of the fluted periphery 810 is larger than the eccentricity of the dowel inner hole axis of the corresponding dowels 60, 70. Two aspects of the rods 110 according to the present invention are shown in FIG. 9b. In both aspects of the present invention the rods 910 and 920 are have lengthways grooves on the surface of the rods. In one aspect of the invention rod 910 has deep grooves 930 whereas according to another aspect of the invention the rod 920 has shallow grooves 930.

FIG. 10 shows a system 1000 comprising two building elements 1010 and 1020 having pre-mounted dowels 1030, sleeves 1040 and rods 1050. The dowels 1030, sleeves 1040 and rods 1050 may be pre-mounted in one of the building elements 1010 and 1020, for example in the factory producing building elements such as to facilitate fast assembling on the construction site of the building elements 1010, 1020.

Another version of the system 1000 is shown in FIG. 11. The wall comprises a variety of building elements 1110 and dowels, rods and sleeves commonly referred to in this example by reference numeral 1120, having been pre-mounted on the building element 1110.

A house—or any other kind of building—is shown in FIG. 12. There are shown different examples for linking the building elements 1210 using the linking systems according to the invention. FIG. 13 shows a magnified view of the links shown in FIG. 12.

Reference List
10Linking system
20First building element
30Second building element
40First hole
50Second hole
60First dowel
62First dowel upper part
63Dowel inner hole axis of the first dowel upper part
64First dowel lower part
65Dowel inner hole axis of the first dowel lower part
66Adaptor
70Second dowel
72Second dowel upper part
73Dowel inner hole axis of the second dowel upper part
74Second dowel lower part
75Dowel inner hole axis of the second dowel lower part
76Adaptor
80First dowel inner hole
82First upper dowel inner hole
84First lower dowel inner hole
90Second dowel inner hole
92Second upper dowel inner hole
94Second lower dowel inner hole
100Sleeve
110Roo
200Dowel
220Dowel lower part
222Nut
225Dowel inner hole diameter of the dowel lower part
230Dowel upper part
232Spring
240Retaining hook
250Dowel inner hole diameter of the dowel upper part
255Middle portion
300Dowel
301Dowel inner hole axis of the dowel lower part
310Dowel upper part
315Dowel inner hole diameter of the dowel upper part
316Dowel inner hole axis of the dowel upper part
320Dowel lower part
325Dowel inner hole diameter of the dowel lower part
330Middle portion
400Dowel
401Dowel axis
410Dowel upper part
415Dowel inner hole of the dowel upper part
416Joint axis
420Dowel lower part
425Dowel inner hole of the dowel upper part
450Hole
800Rod
810Periphery
910Bolt
920Bolt
930Lenghtway groove
1000System
1010Building element
1020Building element
1030Dowel
1040Sleeve
1050Bolt
1110Building element
1120Dowel, sleeve and bolt