EP1024550B1 - Artificial tree to camouflage antennas - Google Patents
Artificial tree to camouflage antennas Download PDFInfo
- Publication number
- EP1024550B1 EP1024550B1 EP00101043A EP00101043A EP1024550B1 EP 1024550 B1 EP1024550 B1 EP 1024550B1 EP 00101043 A EP00101043 A EP 00101043A EP 00101043 A EP00101043 A EP 00101043A EP 1024550 B1 EP1024550 B1 EP 1024550B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pole
- artificial tree
- artificial
- elements
- coupled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1242—Rigid masts specially adapted for supporting an aerial
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
Definitions
- This invention concerns an artificial tree to camouflage antennas and the antenna supporting structures as set forth in the main claim.
- the invention is used to camouflage any type of antenna and the relative supporting structure in order to reduce the aesthetic conflict with the surrounding environment.
- the term "antenna” should be taken to mean any device suitable to emit or receive electromagnetic waves, whether it be of the monopole type, panel type, dish type or otherwise.
- the antennas have to be located at a considerable height from the ground and, while this is not a great problem in industrialised areas, in other areas the presence of poles, towers and pylons has an extremely negative impact on the environment.
- the European Patent EP-B-0 791 976 for example, provides to use a pole which has an upper part, where the antenna is installed, on which attachment means for artificial foliage are provided.
- the attachment means consist of an annular clamp suitable to be locked onto the pole, equipped on the outer perimeter with a plurality of radial plates each of which is suitable to support, at a defined angle of inclination with respect to the pole, the lower end of a rod.
- Artificial foliage made of plastic material suitable to reproduce the branches of a palm-tree, is tied to every rod, which is made of thermoplastic material and has a substantially square transverse section.
- the annular clamp and the lower end of the rods are covered with partly overlapping shells and the rest of the pole with coaxial sleeves; the shells and sleeves are made of fiber glass and are conformed to simulate the trunk of a palm-tree.
- EP-B-0 791 976 allows to achieve only artificial trees conformed as palm-trees or similar since the attachment means proposed are not suitable to support substantially horizontal branches or at least to allow very thick and compact foliage to be achieved, such as for example like a conifer.
- This patent teaches to cover the surface of a pole, suitable to support an antenna at the top, with a mesh made of plastic material which is then covered with a layer of epoxy resin.
- the layer of epoxy resin is subjected to a surface treatment, for example molding, which allows to make it similar to the bark of the tree which is to be imitated.
- the resin When the resin is polymerized, it is painted with an epoxy paint of a color similar to the surface of the bark which is to be imitated.
- a plurality of tubes are welded, each of which is suitable to support a respective branch.
- the branches are made with segments of tube made of polyvinyl chloride (PVC), fitted and glued together one after the other slightly off-axis so as to obtain segmented branches.
- PVC polyvinyl chloride
- the branch thus obtained is then covered with a layer of epoxy resin which, after polymerization, is painted.
- the first segment of tube of the branch has a larger diameter than the others and is fitted onto the respective tube which is solid with the pole.
- the branches not only do not greatly resemble real branches, but also have a structure which is not very resistant to mechanical stresses, atmospheric agents and ageing.
- the segments of tube thus assembled have a very low resistance to bending and cutting and are therefore not very suitable to support the stresses caused by strong wind, a load of snow or ice on the foliage.
- US-A-5,611,176 allows to provide finished artificial trees with characteristics and dimensions which can be varied exclusively during the planning or production stage.
- the layer of paint shows the natural color of the underlying epoxy resin, which compromises the aesthetic appearance of the artificial tree.
- US-A-5,611,176 moreover, proposes a system to anchor the pole to the ground which, although it ensures a good hold, is not suitable to perfectly resemble an artificial tree.
- This patent teaches to achieve tufts of needle-shaped leaves using the same technology used in the bottle brushes employed to clean the insides of bottles or the barrels of fire arms.
- the filaments of green plastic material are held to the two twisted wires by means of gluing with a polymerizable resin.
- a tree styled monopole tower consisting primarily of a steel monopole capped by wireless electronic communications antennae and equipment.
- the steel monopole is clad with two types of simulated bark.
- Material for the lower portion of the monopole is fiberglass, cast as half-tubes within a mold to simulate palm bark.
- the upper portion of the upper portion of the monopole is covered with polyurethane and is also cast to simulate natural tree bark.
- the purpose of the invention is to provide an artificial tree which is quick and easy to achieve and install and suitable to camouflage any type of antenna.
- a second purpose of the invention is to achieve an artificial tree which perfectly resembles natural trees and which offers maximum versatility of use, which can be assembled on site and structurally adapted to contingent situations or specific uses of the antenna, suitable to be perfectly integrated into most environments.
- a further purpose of the invention is to provide embodiments suitable to ensure an optimum mechanical resistance, to atmospheric agents and to ageing.
- the artificial tree according to the invention has a modular structure defined by a plurality of components which can be assembled and are suitable to be associated with a pole used to support an antenna of any type.
- the modular components are suitable to define a bark used to cover the supporting pole and a foliage suitable to hide the antennas.
- the bark comprises a plurality of autonomous elements suitable to couple together and to cover the supporting pole.
- the elements are substantially cylindrical in conformation, or shaped slightly like a truncated cone; they are made of a material which is at least partly deformable elastically and equipped with at least a longitudinal aperture or cut.
- every element defining the bark consists of two or more semi-shells suitable to be coupled together to define a substantially cylindrical, or slightly truncated cone shape.
- these elements can be made with one or two layers or meshes of high resistant fibers which are impregnated and covered with a polymerizable resin.
- the elements are made by molding using molds suitable to reproduce the roughness of natural bark.
- the same polymerizable resin is also used to close the longitudinal aperture of the first type of element, to weld the semi-shells of the second type of elements together and to couple the elements overlapping along the pole to each other.
- the polymerizable resin is neutral in color and pigments are added thereto in order to give it the desired coloring.
- the bark achieved with this method therefore, has no problem of discoloration, abrasion or scratches and hence does not need maintenance and has a practically unlimited working life.
- the branches according to the invention are defined by several segments of tube, of a gradually decreasing diameter towards the outer end of the branch, axially coupled together.
- the first part of the branch that is to say, the part facing the trunk, is suitable to be attached to a mating appendix solid with the pole.
- This first part which is normally the part most subject to stresses, is made of a segment of tube with high resistance to mechanical stresses.
- the first part is reinforced with high resistance fibers such as for example fiber glass impregnated with polyester resin.
- the segment of tube is made by a process of coiling continuous fiber glass using a polymerizable resin as a binding element (filament-winding).
- segments of tube made of plastic material such as for example polyvinyl chloride (PVC).
- PVC polyvinyl chloride
- the casings make the structure of the branch substantially monolithic.
- the invention provides to bend the segments of tube made of thermoplastic material when hot, before they are covered by the sheathes made of resin-impregnated fibers.
- the first part of the branch and the corresponding appendix on which the first part is fitted are equipped with coupling means suitable to retain the branch in the correct position and prevent the latter from accidentally coming loose.
- the artificial tree is suitable to reproduce a conifer and the foliage is therefore of the needle-shaped type.
- the tufts of needle-shaped leaves are made with filaments or similar made of plastic material which are arranged transversely between two or more rows of high resistance continuous fibers or roving, for example fiber glass, the fibers being parallel and impregnated with polymerizable resin.
- the rovings are then twisted together so as to retain the filaments and, subsequently, the resin is polymerized using, advantageously but not exclusively, a source of ultra-violet light to accelerate the process.
- an artificial tree 10 is used to camouflage a system of antennas 11 of the type normally used in cellular telecommunications systems, of which two possible embodiments are shown in Figs. 6 and 7.
- the system of antennas 11 comprises three directional antennas 11a provided in close proximity in Fig. 6 and distanced in Fig. 7.
- the system of antennas 11, however, may be replaced by a system comprising antennas of another type, such as for example a monopole, a panel or a dish.
- the artificial tree 10 is able to simulate a conifer of the Pinus nigra species, commonly known as the black pine or Austrian pine.
- the Pinus nigra can easily be imitated since it has a straight trunk with substantially horizontal branches, very regular and defining a conical-pyramidal foliage, very thick and compact and hence very suitable to camouflage antennas.
- the artificial tree 10 is able to simulate a conifer of the Pinus pinea species, commonly known as cluster pine.
- the artificial tree 10 has a modular structure comprising, in its essential parts, a trunk 12 and branches 13.
- the trunk 12 in turn, has a modular structure defined by a plurality of elements 14 suitable to be superimposed and associated with each other so as to simulate bark which surrounds and hides a metal pole 15 equipped at the upper end with supporting elements 16, of which some possible forms of embodiment are shown in Figs. 6 and 7, for the system of antennas 11.
- the metal pole 15, as shown in Fig. 2, is shaped substantially like a truncated cone and is equipped, on the upper part, with a plurality of radial appendixes 17, each of which is suitable to constrain a respective branch 13, as will be explained in more detail later.
- the pole 15 has a truncated pyramidal shape having at least fifteen sides.
- the constraining means 22 comprise a flange 24 which is attached in a conventional manner to tie bars 25 constrained to a concrete cast 26.
- the concrete 26 is made in the ground 23 at a desired depth so as to give the trunk 12 a realistic appearance.
- the appendices 17 consist of segments of metal tube 18 welded to the pole 15 orthogonally, or with a defined angle of inclination.
- the modular elements 14 are suitable to be coupled to the pole 15 by intervening laterally thereto.
- each modular element 14 comprises two semi-shells, respectively 14a and 14b, which can be coupled together so as to define a shell shaped substantially like a truncated cone, and suitable to surround the pole 15.
- each modular element 14 is made with three or more semi-shells.
- the elements 14 are defined by a single shell, shaped substantially like a truncated cone, elastically deformable and equipped with a longitudinal aperture or out 19.
- the characteristic of elastic deformability allows to widen each shell 14 until it is possible to insert it onto the pole 15 by acting laterally thereto.
- the modular elements 14 are made by contact molding, using polymerizable resins reinforced with high resistance fibers, such as for example glass or carbon disposed like a reed-matting.
- the polymerizable resins are neutral in color and pigments are added thereto; the pigments are natural or artificial in origin and are suitable to give the resins a desired coloring such as, for example in the case of a Pinus nigra, grey-brown-blackish.
- pigmented resins allows to achieve elements 14 with a more natural color than by using a surface painting process, and prevents scratches or abrasions from compromising the aesthetic appearance of the trunk 12.
- the molds used to produce the elements 14 are made of silicon rubber or similar and are suitable to reproduce the roughness and longitudinal ribbed structure typical of natural bark.
- the individual modular elements 14, moreover, can easily be shortened in order to allow, for example, to adapt them to specific installation requirements.
- the modular elements 14 can be finished with surface applications of pigmented resin of a different color from the basic color used, so as to make the trunk 12 even more realistic.
- each branch 13 comprises a plurality of tubular elements 27 of a gradually decreasing diameter, in this case five, respectively 27a, 27b, 27c, 27d and 27e, axially fitted and glued together.
- tubular elements 27, except for the first 27a are bent under heat in such a manner as to achieve curved branches 13.
- the first tubular element 27a is suitable to couple with the respective tubular metal segment 18 and for this purpose is equipped with a through hole 28 suitable to align with a corresponding through hole 29 made in the same tubular metal segment 18.
- a pin 30 is suitable to be inserted into the aligned holes 28 and 29 and is held in position by a split pin 31 (Fig. 12).
- the pin 30 prevents the branch 13 from accidentally coming loose from the tubular metal segment 18 but it allows to detach the branch 13 at any moment to facilitate, for example, the replacement or maintenance of the system of antennas 11.
- the first tubular element 27a is the one which is most subject to mechanical stresses and therefore is made with a polymerizable resin reinforced with high resistance fibers, such as for example fiber glass.
- the remaining tubular elements 27b-27e may be made with less resistant materials such as for example polyvinyl chloride (PVC).
- PVC polyvinyl chloride
- tubular elements 27 once the tubular elements 27 have been fitted and glued together as shown in Fig. 10a, they are entirely covered (Figs. 10b and 11) with a casing 32 made of a web of high resistance fibers, for example glass, impregnated with pigmented polymerizable resins.
- the polymerizable resin may be surface treated, for example with molds or matrixes in silicon rubber, in order to make grained and ribbed structures similar to those of real branches.
- the branches 13 thus achieved not only are very similar in appearance to real branches, but also they are very resistant to mechanical stresses since they have a monolithic structure.
- a plurality of little tubes 33 are coupled onto the branch 13, welded to the respective tubular elements 27a-27e with resin and fiber glass; they are suitable to accommodate and retain secondary branches or foliage 34 of the type shown in Fig. 13, or of any other type.
- the foliage 34 is made with filaments 35 made of plastic material, for example polyvinyl chloride (PVC), which are arranged transversely between three rows of fiber glass or carbon (roving) 36, temporarily held parallel, impregnated with polymerizable resin.
- PVC polyvinyl chloride
- the threads 36 are then twisted together (Fig. 15) so as to retain the filaments 35 and, subsequently, the resin is made to polymerize using, for example, a source of ultra-violet light in order to accelerate the polymerization process.
- the filaments 35 form a winding angle comprised between 0° and 80° with respect to the longitudinal axis of the tubular elements 27a-27e, according to the filament winding technique.
Landscapes
- Support Of Aerials (AREA)
- Prostheses (AREA)
- Details Of Aerials (AREA)
- Catching Or Destruction (AREA)
- Aerials With Secondary Devices (AREA)
- Moulding By Coating Moulds (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
- This invention concerns an artificial tree to camouflage antennas and the antenna supporting structures as set forth in the main claim.
- The invention is used to camouflage any type of antenna and the relative supporting structure in order to reduce the aesthetic conflict with the surrounding environment.
- In the following description, the term "antenna" should be taken to mean any device suitable to emit or receive electromagnetic waves, whether it be of the monopole type, panel type, dish type or otherwise.
- The problems caused by the installation of antennas, for example for cellular telephone systems, radio bridges and so on, in areas of great historic or environmental value, whether in the town or in the country, are well-known.
- The antennas have to be located at a considerable height from the ground and, while this is not a great problem in industrialised areas, in other areas the presence of poles, towers and pylons has an extremely negative impact on the environment.
- This problem is at present a very topical one, also because of there is an ever growing diffusion of public networks or particular technological sectors such as for example telecommunications and cellular telephone systems which require an ever greater number of antennas distributed over a large part of the territory.
- To limit this environmental impact, there have been proposals for poles for antennas shaped like a tree wherein the antennas are located at the top and hidden by foliage made of synthetic materials.
- The European Patent EP-B-0 791 976, for example, provides to use a pole which has an upper part, where the antenna is installed, on which attachment means for artificial foliage are provided.
- The attachment means consist of an annular clamp suitable to be locked onto the pole, equipped on the outer perimeter with a plurality of radial plates each of which is suitable to support, at a defined angle of inclination with respect to the pole, the lower end of a rod.
- Artificial foliage made of plastic material, suitable to reproduce the branches of a palm-tree, is tied to every rod, which is made of thermoplastic material and has a substantially square transverse section.
- The annular clamp and the lower end of the rods are covered with partly overlapping shells and the rest of the pole with coaxial sleeves; the shells and sleeves are made of fiber glass and are conformed to simulate the trunk of a palm-tree.
- One disadvantage of EP-B-0 791 976 is that it allows to achieve only artificial trees conformed as palm-trees or similar since the attachment means proposed are not suitable to support substantially horizontal branches or at least to allow very thick and compact foliage to be achieved, such as for example like a conifer.
- The solution proposed therefore can only be used in areas with a hot climate where palm-trees are very common.
- The US patent US-A-5,611,176 is also known to the state of the art; on the one hand it solves the problem of reproducing other trees apart from palm-trees, but on the other hand it has other disadvantages.
- This patent teaches to cover the surface of a pole, suitable to support an antenna at the top, with a mesh made of plastic material which is then covered with a layer of epoxy resin.
- The layer of epoxy resin is subjected to a surface treatment, for example molding, which allows to make it similar to the bark of the tree which is to be imitated.
- When the resin is polymerized, it is painted with an epoxy paint of a color similar to the surface of the bark which is to be imitated.
- At certain points on the surface of the pole a plurality of tubes are welded, each of which is suitable to support a respective branch.
- The branches are made with segments of tube made of polyvinyl chloride (PVC), fitted and glued together one after the other slightly off-axis so as to obtain segmented branches.
- The branch thus obtained is then covered with a layer of epoxy resin which, after polymerization, is painted.
- The first segment of tube of the branch has a larger diameter than the others and is fitted onto the respective tube which is solid with the pole.
- The branches not only do not greatly resemble real branches, but also have a structure which is not very resistant to mechanical stresses, atmospheric agents and ageing.
- To be more exact, the segments of tube thus assembled have a very low resistance to bending and cutting and are therefore not very suitable to support the stresses caused by strong wind, a load of snow or ice on the foliage.
- The vibrations to which the branch is subjected because of the wind, moreover, can lead to the branch coming off the respective segment of tube, which can compromise the overall appearance of the artificial tree but above all constitute a danger for people.
- Moreover, US-A-5,611,176 allows to provide finished artificial trees with characteristics and dimensions which can be varied exclusively during the planning or production stage.
- Another disadvantage encountered in artificial trees made according to both US-A-5,611,176 and EP-B-0,791,976 is that the layer of paint applied on the epoxy resin to give it the desired color has a limited duration and resistance to external agents.
- To be more exact, if subjected to scratches or abrasions, the layer of paint shows the natural color of the underlying epoxy resin, which compromises the aesthetic appearance of the artificial tree.
- Furthermore, the systems to attach the antennas used in such patents are substantially of a conventional type and made with metallic elements which do not easily lend themselves to being camouflaged as artificial trees reproducing different species from those proposed.
- US-A-5,611,176 moreover, proposes a system to anchor the pole to the ground which, although it ensures a good hold, is not suitable to perfectly resemble an artificial tree.
- This patent teaches to achieve tufts of needle-shaped leaves using the same technology used in the bottle brushes employed to clean the insides of bottles or the barrels of fire arms.
- Instead of using two metal wires twisted together, however, two wires of plastic material are used and instead of the bristles filaments of green plastic material are used.
- The filaments of green plastic material are held to the two twisted wires by means of gluing with a polymerizable resin.
- In this embodiment there are problems in the application and adhesion of the resin to the two twisted wires.
- From US-A-5,787,649 is known a tree styled monopole tower consisting primarily of a steel monopole capped by wireless electronic communications antennae and equipment. The steel monopole is clad with two types of simulated bark. Material for the lower portion of the monopole is fiberglass, cast as half-tubes within a mold to simulate palm bark. The upper portion of the upper portion of the monopole is covered with polyurethane and is also cast to simulate natural tree bark.
- The present Applicant has devised and embodied this invention to overcome the shortcomings of the state of the art and to obtain further advantages.
- The invention is set forth and characterised in the main claim, while the dependent claims describe other innovative characteristics of the invention.
- The purpose of the invention is to provide an artificial tree which is quick and easy to achieve and install and suitable to camouflage any type of antenna.
- A second purpose of the invention is to achieve an artificial tree which perfectly resembles natural trees and which offers maximum versatility of use, which can be assembled on site and structurally adapted to contingent situations or specific uses of the antenna, suitable to be perfectly integrated into most environments.
- A further purpose of the invention is to provide embodiments suitable to ensure an optimum mechanical resistance, to atmospheric agents and to ageing.
- The artificial tree according to the invention has a modular structure defined by a plurality of components which can be assembled and are suitable to be associated with a pole used to support an antenna of any type.
- To be more exact, the modular components are suitable to define a bark used to cover the supporting pole and a foliage suitable to hide the antennas.
- The bark comprises a plurality of autonomous elements suitable to couple together and to cover the supporting pole.
- In a first embodiment according to the invention, the elements are substantially cylindrical in conformation, or shaped slightly like a truncated cone; they are made of a material which is at least partly deformable elastically and equipped with at least a longitudinal aperture or cut.
- Thanks to this characteristic of elastic deformability, it is possible to widen each cylindrical element when it is associated with the pole to allow it to be inserted thereon.
- In another embodiment according to the invention, every element defining the bark consists of two or more semi-shells suitable to be coupled together to define a substantially cylindrical, or slightly truncated cone shape.
- According to a variant, which can be applied to both embodiments, these elements can be made with one or two layers or meshes of high resistant fibers which are impregnated and covered with a polymerizable resin.
- In the preferential embodiment of the invention, the elements are made by molding using molds suitable to reproduce the roughness of natural bark.
- According to a variant, the same polymerizable resin is also used to close the longitudinal aperture of the first type of element, to weld the semi-shells of the second type of elements together and to couple the elements overlapping along the pole to each other.
- According to one characteristic of the invention, the polymerizable resin is neutral in color and pigments are added thereto in order to give it the desired coloring.
- The bark achieved with this method, therefore, has no problem of discoloration, abrasion or scratches and hence does not need maintenance and has a practically unlimited working life.
- Moreover, by applying several layers of different colored polymerizable resins to the modular elements, it is possible to obtain variations in color typical of the bark of the chosen species of tree.
- With this embodiment, it is possible to achieve trees of any height, according to the height of the supporting tree, simply by adding or subtracting a defined number of modular elements.
- The branches according to the invention are defined by several segments of tube, of a gradually decreasing diameter towards the outer end of the branch, axially coupled together.
- The first part of the branch, that is to say, the part facing the trunk, is suitable to be attached to a mating appendix solid with the pole.
- This first part, which is normally the part most subject to stresses, is made of a segment of tube with high resistance to mechanical stresses.
- According to one embodiment of the invention, the first part is reinforced with high resistance fibers such as for example fiber glass impregnated with polyester resin.
- According to a variant, the segment of tube is made by a process of coiling continuous fiber glass using a polymerizable resin as a binding element (filament-winding).
- The other parts of the branch are achieved with segments of tube made of plastic material such as for example polyvinyl chloride (PVC).
- There is no problem, with these segments of tube, that they might accidentally come loose, since they are axially coupled together.
- With this invention, moreover, this problem is avoided since, once they are coupled, the segments of tube are completely covered with casings made of high resistance fiber glass impregnated with pigmented polymerizable resin.
- Once the resin has polymerized, the casings make the structure of the branch substantially monolithic.
- Should it be desired to give the branches a substantially curved development, the invention provides to bend the segments of tube made of thermoplastic material when hot, before they are covered by the sheathes made of resin-impregnated fibers.
- According to the invention, the first part of the branch and the corresponding appendix on which the first part is fitted are equipped with coupling means suitable to retain the branch in the correct position and prevent the latter from accidentally coming loose.
- Although extremely stable, the coupling achieved by these attachment means is not however of the permanent type and it is possible to rapidly remove the branch from the artificial tree at any moment, for example to facilitate the maintenance of the antenna.
- Then the desired type of foliage is associated with the branches thus obtained.
- According to a preferential embodiment of the invention, the artificial tree is suitable to reproduce a conifer and the foliage is therefore of the needle-shaped type.
- In this embodiment, the tufts of needle-shaped leaves are made with filaments or similar made of plastic material which are arranged transversely between two or more rows of high resistance continuous fibers or roving, for example fiber glass, the fibers being parallel and impregnated with polymerizable resin.
- The rovings are then twisted together so as to retain the filaments and, subsequently, the resin is polymerized using, advantageously but not exclusively, a source of ultra-violet light to accelerate the process.
- These and other characteristics of the invention will be evident from the following description of some preferred forms of embodiment, given as a non-restrictive example, with reference to the attached drawings wherein:
- Fig. 1
- shows an artificial tree according to the invention to camouflage antennas;
- Fig. 2
- shows the artificial tree as in Fig. 1 before the branches are associated;
- Fig. 3
- shows a detail of a possible attachment system used to constrain the tree as shown in Fig. 1 to the ground;
- Fig. 4
- shows a modular element used to achieve the bark of the trunk of the artificial tree shown in Fig. 1;
- Fig. 5
- shows a variant of Fig. 4;
- Figs. 6 and 7
- show two possible embodiments of antennas which can be camouflaged with the artificial tree according to the invention;
- Fig. 8
- shows the modular elements as in Fig. 4 associated with the pole supporting the antennas;
- Fig. 9
- shows the enlarged section from A to A of Fig. 8;
- Fig. 10a
- shows a branch of the tree as in Fig. 1 in a first production step;
- Fig. 10b
- shows the branch as in Fig. 10a in a subsequent step;
- Fig. 11
- shows the enlarged section from B to B of Fig. 10b;
- Fig. 12
- is a part view of the branch as in Fig. 10b during its association with the tree as in Fig. 2;
- Fig. 13
- shows the foliage used in the artificial tree as in Fig. 1;
- Fig. 14
- shows the enlarged section from C to C of Fig. 13;
- Fig. 15
- shows an enlarged detail of Fig. 13.
- With reference to Fig. 1, an
artificial tree 10 according to the invention is used to camouflage a system ofantennas 11 of the type normally used in cellular telecommunications systems, of which two possible embodiments are shown in Figs. 6 and 7. - To be more exact, the system of
antennas 11 comprises threedirectional antennas 11a provided in close proximity in Fig. 6 and distanced in Fig. 7. - The system of
antennas 11, however, may be replaced by a system comprising antennas of another type, such as for example a monopole, a panel or a dish. - In this case, the
artificial tree 10 is able to simulate a conifer of the Pinus nigra species, commonly known as the black pine or Austrian pine. - The Pinus nigra can easily be imitated since it has a straight trunk with substantially horizontal branches, very regular and defining a conical-pyramidal foliage, very thick and compact and hence very suitable to camouflage antennas.
- These plants, moreover, can reach heights of up to 20-30 metres, and therefore are optimal models to achieve
artificial trees 10 suitable to camouflage antennas which need to be installed at a great height. - According to a variant, not shown in the drawings, the
artificial tree 10 is able to simulate a conifer of the Pinus pinea species, commonly known as cluster pine. - The
artificial tree 10 according to the invention has a modular structure comprising, in its essential parts, atrunk 12 andbranches 13. - The
trunk 12, in turn, has a modular structure defined by a plurality ofelements 14 suitable to be superimposed and associated with each other so as to simulate bark which surrounds and hides ametal pole 15 equipped at the upper end with supportingelements 16, of which some possible forms of embodiment are shown in Figs. 6 and 7, for the system ofantennas 11. - The
metal pole 15, as shown in Fig. 2, is shaped substantially like a truncated cone and is equipped, on the upper part, with a plurality ofradial appendixes 17, each of which is suitable to constrain arespective branch 13, as will be explained in more detail later. - According to a variant, not shown in the drawings, the
pole 15 has a truncated pyramidal shape having at least fifteen sides. - On the lower end of the
pole 15 there are constrainingmeans 22 which allow to make thepole 15 solid with theground 23. - In this case, the constraining
means 22 comprise aflange 24 which is attached in a conventional manner to tiebars 25 constrained to aconcrete cast 26. - As can be seen in Fig. 3, the concrete 26 is made in the
ground 23 at a desired depth so as to give the trunk 12 a realistic appearance. - In this case, the
appendices 17 consist of segments ofmetal tube 18 welded to thepole 15 orthogonally, or with a defined angle of inclination. - According to one characteristic of the invention, the
modular elements 14 are suitable to be coupled to thepole 15 by intervening laterally thereto. - According to a first solution shown in Fig. 4, each
modular element 14 comprises two semi-shells, respectively 14a and 14b, which can be coupled together so as to define a shell shaped substantially like a truncated cone, and suitable to surround thepole 15. - According to a variant which is not shown here, each
modular element 14 is made with three or more semi-shells. - In the embodiment shown in Fig. 5, the
elements 14 are defined by a single shell, shaped substantially like a truncated cone, elastically deformable and equipped with a longitudinal aperture or out 19. - The characteristic of elastic deformability allows to widen each
shell 14 until it is possible to insert it onto thepole 15 by acting laterally thereto. - According to the invention, the
modular elements 14 are made by contact molding, using polymerizable resins reinforced with high resistance fibers, such as for example glass or carbon disposed like a reed-matting. - According to one characteristic of the invention, the polymerizable resins are neutral in color and pigments are added thereto; the pigments are natural or artificial in origin and are suitable to give the resins a desired coloring such as, for example in the case of a Pinus nigra, grey-brown-blackish.
- Using pigmented resins allows to achieve
elements 14 with a more natural color than by using a surface painting process, and prevents scratches or abrasions from compromising the aesthetic appearance of thetrunk 12. - According to the invention, the molds used to produce the
elements 14 are made of silicon rubber or similar and are suitable to reproduce the roughness and longitudinal ribbed structure typical of natural bark. - With this invention it is possible to achieve
artificial trees 10 of any height simply by varying the number ofmodular elements 14 to be associated with thepole 15. - The individual
modular elements 14, moreover, can easily be shortened in order to allow, for example, to adapt them to specific installation requirements. - It is very easy to couple the individual
modular elements 14 to thepole 15, as shown in Fig. 8, and provides that thecorresponding edges 114 of each individualmodular element 14 are made to coincide. Themodular elements 14 are fixed to thepole 15 by means of gluing performed along a single directrix. - Subsequently the
edges 114 are covered with alayer 21 of polymerizable resin (Fig. 9) of the same type used to achieve themodular elements 14. - The same method is used to associate the superimposed modular elements 14 (Fig. 8).
- According to a variant, the
modular elements 14 can be finished with surface applications of pigmented resin of a different color from the basic color used, so as to make thetrunk 12 even more realistic. - As shown in Fig. 10a, each
branch 13 comprises a plurality oftubular elements 27 of a gradually decreasing diameter, in this case five, respectively 27a, 27b, 27c, 27d and 27e, axially fitted and glued together. - In this case, the
tubular elements 27, except for the first 27a, are bent under heat in such a manner as to achievecurved branches 13. - According to the invention, the first
tubular element 27a is suitable to couple with the respectivetubular metal segment 18 and for this purpose is equipped with a throughhole 28 suitable to align with a corresponding throughhole 29 made in the sametubular metal segment 18. - A
pin 30 is suitable to be inserted into the alignedholes - The
pin 30 prevents thebranch 13 from accidentally coming loose from thetubular metal segment 18 but it allows to detach thebranch 13 at any moment to facilitate, for example, the replacement or maintenance of the system ofantennas 11. - The first
tubular element 27a is the one which is most subject to mechanical stresses and therefore is made with a polymerizable resin reinforced with high resistance fibers, such as for example fiber glass. - The remaining
tubular elements 27b-27e may be made with less resistant materials such as for example polyvinyl chloride (PVC). - According to one characteristic of the invention, once the
tubular elements 27 have been fitted and glued together as shown in Fig. 10a, they are entirely covered (Figs. 10b and 11) with acasing 32 made of a web of high resistance fibers, for example glass, impregnated with pigmented polymerizable resins. - In this case too, the polymerizable resin may be surface treated, for example with molds or matrixes in silicon rubber, in order to make grained and ribbed structures similar to those of real branches.
- The
branches 13 thus achieved not only are very similar in appearance to real branches, but also they are very resistant to mechanical stresses since they have a monolithic structure. - When the resin has polymerized, a plurality of
little tubes 33 are coupled onto thebranch 13, welded to the respectivetubular elements 27a-27e with resin and fiber glass; they are suitable to accommodate and retain secondary branches orfoliage 34 of the type shown in Fig. 13, or of any other type. - The
foliage 34 is made withfilaments 35 made of plastic material, for example polyvinyl chloride (PVC), which are arranged transversely between three rows of fiber glass or carbon (roving) 36, temporarily held parallel, impregnated with polymerizable resin. - The
threads 36 are then twisted together (Fig. 15) so as to retain thefilaments 35 and, subsequently, the resin is made to polymerize using, for example, a source of ultra-violet light in order to accelerate the polymerization process. Thefilaments 35 form a winding angle comprised between 0° and 80° with respect to the longitudinal axis of thetubular elements 27a-27e, according to the filament winding technique.
Claims (17)
- Artificial tree to camouflage an antenna comprising a trunk (12) suitable to cover a pole (15) supporting said antenna (11) and branches (13) suitable to hide the antenna (11), wherein each branch (13) comprises two or more tubular elements (27) axially coupled together, wherein said tubular elements (27) are covered with a casing (32) suitable to achieve a monolithic structure, wherein a first tubular element (27a) is able to be coupled with a corresponding appendix (17) solid with said pole (15) and is equipped with constraining means able to removably couple the branch (13) to the pole (15), wherein said trunk (12) has a modular structure defined by two or more modular elements (14) constituted by truncated cone-shaped shells able to be coupled one on top of the other and able to be inserted onto the pole (15) by acting laterally thereto, characterized in that each truncated cone-shaped shell (14) has a single longitudinal aperture or cut (19) which allows to temporarily widen said shell (14).
- Artificial tree as in Claim 1, characterised in that said constraining means comprise a pin (30) suitable to be removably inserted into through holes (28,29) provided in corresponding positions on said appendix (17) and on the end of said first tubular element (27a) where it is associated.
- Artificial tree as in Claim 1, characterised in that at least said first tubular element (27a) is made with artificial fibers of high resistance impregnated with polymerizable resin.
- Artificial tree as in Claim 1, characterised in that the casing (32) is made with webs of high resistance fibers impregnated with polymerizable resin.
- Artificial tree as in Claim 1, characterised in that the tubular elements (27b-27e) coupled with the first tubular element (27a) are made of plastic material suitable to be bent under heat.
- Artificial tree as in Claim 1, characterised in that said pole (15) has a truncated pyramidal shape having at least fifteen sides.
- Artificial tree as in Claim 1, characterised in that the edges (114) defining the longitudinal aperture or cut (19) are suitable to be welded together by means of polymerizable resin (21).
- Artificial tree as in Claim 1, characterised in that the branch (13) is suitable to support tufts of needle-shaped foliage (34) made by twisting together at least two rovings of high resistance fibers impregnated with polymerizable resin, filaments made of plastic material suitable to simulate needle-shaped leaves being arranged transversely between said rovings before they are twisted.
- Artificial tree as in any claim hereinbefore, characterised in that coloring pigments are added to the polymerizable resin.
- Artificial tree as in Claim 1, characterised in that the pole (15) is equipped at the lower part with constraining means (22) suitable to be buried.
- Artificial tree as in Claim 1, characterised in that said modular elements (14) are made with elastic polymerizable and reinforced resin with a reed-matting of fiber grass or carbon.
- Artificial tree as in Claim 1, characterised in that it simulates a conifer of the Pinus nigra or Pinus pinea species.
- Method for manufacturing an artificial tree to camouflage antennas, wherein said artificial tree comprises a trunk (12) suitable to cover a pole (15) supporting the antenna (11) and branches (13) suitable to hide the antenna (11), wherein said trunk (12) has a modular structure defined by two or more modular elements (14) constituted by truncated cone-shaped shells able to be coupled one on top of the other and able to be inserted onto the pole (15) by acting laterally thereto, characterised in that said modular elements (14) are made by contact molding, using polymerizable resins reinforced with high resistance fibers disposed in a reed-matting manner and in that each truncated cone-shaped shell (14) has a single longitudinal aperture or cut (19) which allows to temporarily widen said shell (14).
- Method as in Claim 13, characterised in that said polymerizable resins are neutral in color, wherein pigments are added thereto and wherein said pigments are natural or artificial in origin and are able to give said resins a desired coloring.
- Method as in Claim 13, characterised in that the mold used to produce said modular elements (14) is made of silicon rubber or similar material and is able to reproduce the roughness and longitudinal ribbed structure typical of natural bark.
- Method as in Claim 13, characterised in that each individual modular elements (14) is coupled to said pole (15) in such a manner that the corresponding edges (114) of each individual modular element (14) are made to coincide.
- Method as in Claim 13, characterised in that said modular elements (14) are coupled to said pole (15) by means of gluing performed along a single directrix.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200030248T SI1024550T1 (en) | 1999-01-26 | 2000-01-20 | Artificial tree to camouflage antennas |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999UD000016A IT1311773B1 (en) | 1999-01-26 | 1999-01-26 | ARTIFICIAL TREE FOR ANTENNAS CAMOUFLAGE. |
ITUD990016 | 1999-01-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1024550A1 EP1024550A1 (en) | 2000-08-02 |
EP1024550B1 true EP1024550B1 (en) | 2003-08-27 |
Family
ID=11422837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00101043A Expired - Lifetime EP1024550B1 (en) | 1999-01-26 | 2000-01-20 | Artificial tree to camouflage antennas |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1024550B1 (en) |
AT (1) | ATE248442T1 (en) |
DE (1) | DE60004715D1 (en) |
ES (1) | ES2155044T3 (en) |
IT (1) | IT1311773B1 (en) |
PT (1) | PT1024550E (en) |
SI (1) | SI1024550T1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2160539B1 (en) * | 2000-02-10 | 2003-04-01 | Jimenez Belinchon S A | APPLICABLE CAMOUFLAGE PROVISION ON TOWERS SUPPORT OF ANTENNAS OF TECHNELOMUNICATIONS OR SIMILAR. |
DE10058759C1 (en) * | 2000-11-27 | 2003-01-30 | Francesco Digitalino | Satellite reception antenna for domestic dwelling has outer housing enclosing antenna dish provided by fine wire grid in shape of plant container |
US6658797B2 (en) * | 2001-01-31 | 2003-12-09 | Absolute Stealth Ltd. | Antenna support structure with palm tree skirt |
DE10140441C2 (en) * | 2001-08-10 | 2003-06-18 | Fus Torsten | Mounting system for the installation of antenna systems with antenna covers |
ES2195762B1 (en) * | 2002-01-25 | 2005-03-01 | Ibelca Ingenieria De Telecomunicaciones, S.A. | CAMOUFLAGE SYSTEM OF TELECOMMUNICATIONS AND SIMILAR ANTENNAS. |
ES2195767B1 (en) * | 2002-01-30 | 2005-03-01 | Ibelca Ingenieria De Telecomunicaciones, S.A. | CAMOUFLAGE FOR MOBILE TELEPHONY ANTENNAS AND ASSEMBLY SIMILARS IN OPEN SPACES. |
US7888584B2 (en) * | 2003-08-29 | 2011-02-15 | Lyden Robert M | Solar cell, module, array, network, and power grid |
DE102004030512B3 (en) * | 2004-06-14 | 2005-12-01 | Alexandro Lisitano | Modular antenna system with cladding elements connected to a base where there is no static connection between the modules |
ITMI20112410A1 (en) * | 2011-12-28 | 2013-06-29 | Leoci Stefano | HYBRID ENERGY GENERATOR INTEGRATED IN AN ARTIFICIAL TREE. |
AR109730A1 (en) * | 2017-09-27 | 2019-01-16 | Elova S A | POST FOR WIRELESS TRANSMISSION ANTENNA AND METHOD FOR PLACEMENT |
US10840707B2 (en) | 2018-08-06 | 2020-11-17 | Robert M. Lyden | Utility pole with solar modules and wireless device and method of retrofitting existing utility pole |
US11207988B2 (en) | 2018-08-06 | 2021-12-28 | Robert M. Lyden | Electric or hybrid vehicle with wireless device and method of supplying electromagnetic energy to vehicle |
US11588421B1 (en) | 2019-08-15 | 2023-02-21 | Robert M. Lyden | Receiver device of energy from the earth and its atmosphere |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4305980A (en) * | 1979-07-17 | 1981-12-15 | American Technical Industries Inc. | Artificial tree |
US4774113A (en) * | 1987-11-09 | 1988-09-27 | Herman Rynveld's Son Corporation | Artificial tree limb |
US5787649A (en) * | 1994-02-28 | 1998-08-04 | Nestor T. Popowych | Tree styled monopole tower |
US5611176A (en) * | 1994-03-02 | 1997-03-18 | Juengert; Robert P. | Antenna support structure |
ZA971475B (en) * | 1996-02-23 | 1997-08-28 | Sectional Poles Africa Pty | Concealment and disguisement of antenna structures. |
GB9708433D0 (en) * | 1997-04-26 | 1997-06-18 | Alan Dick & Company Limited | Towers for antennae |
-
1999
- 1999-01-26 IT IT1999UD000016A patent/IT1311773B1/en active
-
2000
- 2000-01-20 AT AT00101043T patent/ATE248442T1/en not_active IP Right Cessation
- 2000-01-20 PT PT00101043T patent/PT1024550E/en unknown
- 2000-01-20 ES ES00101043T patent/ES2155044T3/en not_active Expired - Lifetime
- 2000-01-20 EP EP00101043A patent/EP1024550B1/en not_active Expired - Lifetime
- 2000-01-20 SI SI200030248T patent/SI1024550T1/en unknown
- 2000-01-20 DE DE60004715T patent/DE60004715D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
PT1024550E (en) | 2003-11-28 |
ITUD990016A1 (en) | 2000-07-26 |
IT1311773B1 (en) | 2002-03-19 |
ES2155044T1 (en) | 2001-05-01 |
EP1024550A1 (en) | 2000-08-02 |
ES2155044T3 (en) | 2004-04-16 |
ATE248442T1 (en) | 2003-09-15 |
SI1024550T1 (en) | 2004-02-29 |
DE60004715D1 (en) | 2003-10-02 |
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