NL2011571C2 - A greenhouse equipped with an operable shielding installation of which screens during assembly can be zipped into and out of connection profiles. - Google Patents
A greenhouse equipped with an operable shielding installation of which screens during assembly can be zipped into and out of connection profiles. Download PDFInfo
- Publication number
- NL2011571C2 NL2011571C2 NL2011571A NL2011571A NL2011571C2 NL 2011571 C2 NL2011571 C2 NL 2011571C2 NL 2011571 A NL2011571 A NL 2011571A NL 2011571 A NL2011571 A NL 2011571A NL 2011571 C2 NL2011571 C2 NL 2011571C2
- Authority
- NL
- Netherlands
- Prior art keywords
- longitudinal direction
- profile
- cloth
- department store
- exit
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/22—Shades or blinds for greenhouses, or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Description
Title: A greenhouse equipped with an operable shielding installation of which screens during assembly can be zipped into and out of connection profiles.
The invention relates to glass type greenhouses which comprises an operable shielding installation underneath a glass panel roof. Such greenhouses delimit a growing space and have a housing framework which is provided with an assembly of columns and girders. A roof is supported by the columns.
Such a greenhouse for example is known from NL-1034598. The framework here comprises a number of girders which each time extend parallel to each other in a longitudinal direction and which are spaced apart relative to each other at a distance of a few meters. Between each set of girders a plurality of cables is tensioned. The shielding installation comprises a plurality of screens, one between each set of girders. On one edge side each screen is connected to its corresponding girder. On its other edge side each screen is connected to an operator bar. In NL-1034598 this is done by the edge sides of the screens being equipped with thickened rims which are to be slid with form fits into corresponding holding slits which are present on the rigid girders and rigid operator bars. Each operator bar is placed in between its respective set of girders and can be moved towards and away from one of the girders, while dragging the screen along from a nonshielding towards a shielding position and vice versa. A disadvantage here is that the connection of the screens with their girders and operator bars leaves to be desired. It is a time-consuming operation each time a new screen needs to be placed, particularly if an old screen first needs to be removed. Also it is a dangerous operation since the screens need to be manually guided with their thickened rims into the holding slits of their girders and bars which needs to be done at ever increasing heights, since greenhouses are nowadays built with heights of 7-8 meters and more. Also the guiding of the rims into and then pulling them all the way through the slits requires a very high pulling force to be exerted on the screen. This may well lead to undesired deformations of the screen. Also it may frequently occur that the rim gets stuck at some location along the girder or bar, which then needs to be dealt with manually at that location. Another disadvantage is that for the placing of the screens it is necessary to make use of the floor space below. This means that the screens can only be placed and/or replaced when the floor is not occupied yet with plants, transportation systems, climate and watering systems, or the like. Those plants, transportation systems, climate and watering systems, and the like then need to be placed after the screens have already been hung up. This however may lead to dust and other contaminating particles starting to swirl through the greenhouse during placing of for example the plants, and ending up on top of the screens.
The present invention aims to overcome one or more of the above disadvantages at least partly or to provide a usable alternative. In particular the invention aims to provide a greenhouse with an operable shielding installation which can easily and quickly be (re)placed without having to make use of the floor space underneath.
This aim is achieved by a greenhouse according to claim 1. The greenhouse comprises a housing framework which delimits a growing space. The framework is provided with an assembly of columns and has at least one set of two girders which extend parallel in a longitudinal direction and which are spaced apart relative to each other while being supported directly or indirectly by the columns. A roof is supported by the columns. The roof is at least partly formed by glass panels. A shielding installation is provided underneath the roof. The shielding installation comprises at least one screen for forming a shield between the growing space and the roof. Guiding means, for example formed by tensioned cables, extend in between the girders. An operator bar extends parallel to and in between each set of girders. The bar is movably guided by the guiding means such that it can be moved relative to them in a direction transverse to the girders. Each screen has a first connection rim with which the screen is connected to its girder by means of first releasable connection means. The screen further has an opposite second connection rim with which the screen is connected to the operator bar by means of second releasable connection means. The connection rim preferably is a thickened connection rim which forms an integral part of or is fixedly mounted to relative thin-walled cloth material of the screen. The operator bar is movable relative to the guiding means back and forth, while dragging the screen along from a non-shielding position towards a shielding position and vice versa in between its set of girders.
According to the inventive thought the first releasable connection means comprise a first elongate profile which is coupled to the girder, whereas the second releasable connection means comprise a second elongate profile which is coupled to the operator bar. Both the first and second profile are each provided with their own elongate clamping cavity. This clamping cavity extends in the longitudinal direction, and is delimited in this longitudinal direction by at least one elongate resilient wall part that is temporarily bendable apart to permit a respective one of the connection rims of the screen to move into its clamping cavity by means of a zipping action or to move out of its clamping cavity by means of an unzipping action.
Thus the connection of the screens with their girders and operator bars has been improved such that each time a screen needs to be (re)placed, this can be done quickly, efficiently and largely automated. Workers no longer have to manually guide the entire screen rims into slits or the like. Also the entire screen no longer has to be pulled in the longitudinal direction along the girder and bar while at the same time getting connected thereto. Instead the screen can first be placed at an earlier stage on top of for example the guiding means, left there for a couple of hours, for example a day, in order to retain its original shape, and not before then get zipped to the profiles. Employees thus no longer need to perform all kinds of dangerous connecting operations at large heights within the greenhouse. The floor space below the screen no longer needs to be used for the placing or replacing actions of the screen. This means that the screens advantageously can also be placed and/or replaced when the floor is already occupied with plants and the like. Those plants and the like can now even be placed before the screens are hung up. This may help to keep the screens clean for a longer time, which helps to increase the efficiency and life span of the screen. It now even has become possible to replace screens with other types of screens whenever this is desired and without first having to make way on the floor space underneath it. The greenhouse can be kept in full operation while changing its screens. This is particularly advantageous because nowadays greenhouses have substantially more internal transporting systems.
It is noted that EP-0 428 235 already discloses a foil greenhouse of which foil material with thickened rims may get zipped into flexibly delimited hollows of profiles. Here however the foil greenhouse is of a different type compared to the present invention. In a foil greenhouse the roof is formed by the foil material itself. No glass panels or the like are provided as roof. In this known foil greenhouse the foil material needs to keep the roof closed. The foil material cannot be compared to an operable screen according to the present invention. The foil material does not and cannot get displaced between non-shielding and shielding positions. Both profiles to which the foil material side edges are connected, are coupled to steel wires. Those steel wires both extend in a longitudinal direction at fixed positions. An unzipping of the screen is not foreseen.
In a preferred embodiment according to the present invention zipper organs are provided for performing the zipping actions of the connection rims into their profiles in an automated manner. This zipping can either be performed simultaneously or one after the other. The zipper organs each have an elongate zip body which extends in the longitudinal direction, which zip body comprises on one side a T-shaped rib. A crossbeam of the rib is spaced away from the zip body and serves to be slid into the clamping cavity of one of the profiles while bending the elongate resilient wall part temporarily apart. For this the rib is dimensioned slightly larger than the cross-sectional dimensions of the clamping cavity. A groove is provided which extends from one end in the zip body in the longitudinal direction thereof. The groove has a wide portion for receiving a free portion of the connection rim, and a thin portion for receiving a free portion of the cloth material of the screen. The groove is partly closed on one side by a front segment of the T-shaped rib while continuing in part into a back segment of the T-shaped rib. The T-shaped rib at the location of the continuation of the groove is provided with a slot in its crossbeam. The slot is adapted to receive and guide the connection rim. A hoisting organ is provided for moving the zipper organ in a forward zipping direction along the profile while the connection rim gets to run through the groove via the slot and into the clamping cavity where it gets automatically clamped after the zipper organ has passed by and no longer bends the elongate resilient wall part apart.
In another preferred embodiment unzipper organs are provided for performing the unzipping actions of the two connection rims in an automated manner. This unzipping can either be performed simultaneously or one after the other. The unzipper organs each have an elongate unzip body which extends in the longitudinal direction. The unzip body comprises on one side a T-shaped rib. A crossbeam of the rib is spaced away from the unzip body and serves to be slid into the clamping cavity of one of the profiles while bending the elongate resilient part temporarily apart. For this the rib is dimensioned slightly larger than the cross-sectional dimensions of the clamping cavity. A hoisting organ is provided for moving the unzipper organ in a backward unzipping direction along the profile while the connection rim gets automatically forced out of the clamping cavity. The unzipper organs thus in particular are each designed to remove a thickened rim of the screen under an angle out of its profile in an automated manner.
In a further embodiment the body of the unzipper organ comprises a guiding element, in particular a freely rotatable wheel, along which the connection rim of the screen is guided. This guiding element is positioned in a transverse direction at a distance of the T-shaped rib. Thus during a forwards directed pulling of the unzipping organ in the longitudinal direction along the profile, a simultaneous longitudinal backwards directed tensioning force on a free end of the screen, automatically can get transferred into a transversely directed pulling force on the connection rim. This helps to purposely pull the rim out of its cavity.
In addition thereto or in the alternative the body may comprise a wedge shaped lifting organ at a front side of the T-shaped rib. This helps to lift the rim out of its cavity. Another function of the lifting organ is to help to keep the T-shaped rib in place inside its profile during unzipping.
In a variant two unzipping organs are connected to each other, wherein a guiding element extends in between the two unzipping organs, in particular a ring-shaped guiding element, for guiding freed parts of the screen during unzipping such that the screen gets bundled somewhat while getting to freely lie on top of the guiding means which extend in between the two girders.
The profiles can be coupled to the girders and operator bars in all kinds of manners. In particular the first and/or second profile may be releasably connected to the operator bar or girder by means of a plurality of releasable connection organs, in particular spring clamps. The first and/or second profile can also be provided with an elongate coupling cavity extending in the longitudinal direction for releasably coupling the profile to an elongate coupling rim of the girder or operator bar which also extends in the longitudinal direction.
This has the advantage that the profile can be quickly and easily connected to the girder, for example by sliding the coupling cavity over the coupling rim starting at one end side of the profile. It is also possible for the profile to be clicked with its coupling cavity over the coupling rim. For this the coupling cavity needs to be delimited in the longitudinal direction by at least one elongate resilient coupling wall part that is temporarily bendable apart to permit the coupling rim of the girder or bar to be clicked into the coupling cavity. Since a coupling rim is already present on lots of existing operator bars in greenhouses, this embodiment makes it possible to easily and without further modification connect the second profile to the operator bar.
In a further variant the profile comprises at least one elongate flexible resilient tongue extending in the longitudinal direction and destined to substantially sealingly lie against the girder or operator bar. Thus any irregularities in the girder or bar can easily be compensated for. No leakages of light, heat or the like can occur in between them. The tongue can in particular be co-extruded to the profile, and for example be made out of a flexible material like rubber.
The profiles preferably are made out of plastic. This helps to keep the shielding installation light weight and cheap and provides for the wall parts which delimit the clamping cavities to be resilient.
Further preferred embodiments are stated in the dependent subclaims.
The invention also relates to a shielding installation and an unzipping organ for use in a greenhouse, as well as to a method for shielding a greenhouse according to claims 13-14.
The invention shall now be explained in more detail with reference to the accompanying drawings, in which:
Fig. 1 shows a schematic cross-sectional view of part of an embodiment of the greenhouse according to the invention;
Fig. 2 shows the connection between the screen and girder of fig. 1 during a zipping action;
Fig. 3 shows the connection between the screen and operator bar of fig. 1 during a zipping action;
Fig. 4a, b show the coupling between the first profile and the girder in more detail;
Fig. 5a, b show the coupling between the second profile and the operator bar in more detail;
Fig. 6a-h show the zipper organ in more detail;
Fig. 7 shows a schematic top view of the shielding installation during an unzipping action; and
Fig. 8 shows a cross sectional view of fig. 7 over the line VIII-VIII.
In fig. 1 a growing space within a greenhouse has been given the reference numeral 1. The greenhouse comprises vertically standing columns 2 and horizontally lying girders 3 mounted thereto at positions underneath a roof 4. The columns 2 and girders 3 are made out of hollow metal profiles. The roof 4 is formed by glass panels. The girders 3 extend in a longitudinal direction x. A shielding installation is provided underneath the roof 4 above the growing space 1. The shielding installation comprises a plurality of flexible cloth-like screens 5 which here can be moved together in a simultaneous operation between a shielding and a non-shielding position in a transverse direction y.
Each screen 5 extends between a set of adjacent girders 3. The right girder 3a in fig. 1 has a first plastic profile 7 coupled thereto by means of a number of spring clamps 8. At a back side of the profile 7 two rubber tongues 9 are provided which lie against the girder 3a. At a front side of the profile 7 a clamping cavity 10 is provided which lies in between two elongate resilient wall parts 11 extending in the longitudinal direction x.
The screen 5 is provided with a thickened rim 14 sewn to its right longitudinal side edge, which rim 14 is clamped by the two resilient wall parts 11 and thus is trapped inside the cavity 10 while thinner cloth material of the screen 5 extends outwardly.
An operator bar 20 is provided which extends in the longitudinal direction x while lying in between the two girders 3. The operator bar 20 is formed by an aluminium extrusion profile which is equipped with a thickened coupling rim 21.
The operator bar 20 has a second plastic profile 23 coupled to the coupling rim 21 by means of a coupling cavity 24 which is provided at a back side of the profile 23. At a front side of the profile 23 a clamping cavity 25 is provided which lies in between two resilient wall parts 26.
The screen 5 is provided with a thickened rim 28 sewn to its left longitudinal side edge, which rim 28 is clamped by the two resilient wall parts 26 and thus is trapped inside the cavity 25 while the thinner cloth material of the screen 5 extends outwardly.
The operator bar 20 at its lower side is linked to operator cables 30. The operator cables 30 can be operated by means of suitable winches or the like for pulling the operator bar 20 back and forth in the transverse direction y. If operated to move the operator bar 20 towards the left girder 3b, the bar 20 drags the screen 5 along with it until it reaches its shielding position in which it extends substantially tight in between the left and right girders 3a, 3b. If operated to move the operator bar 20 towards the right girder 3a, the bar 20 drags the screen 5 along with it until it reaches its non-shielding position in which it lies as a bundle adjacent the right girder 3a.
Parallel to the operator cables 30 an additional set of cables is provided as guiding means in between the two girders 3. Those additional cables also extend in the transverse direction y and serve the purpose of supporting and guiding the operator bar 20 and the screen 5.
In fig. 2 and 3 it is shown how the screen 5 gets zipped with its rims 14, 28 into the corresponding clamping cavities 10, 25 of the profiles 7, 23 during an initial assembly of the screen 5. With this advantageous use is being made of a zipper organ 40. This zipper organ 40 is designed to run with one part through the cavities 10, 25 while pushing the respective sets of resilient wall parts 11, 26 temporarily apart such that at the same time the rims 14, 28 can easily and smoothly be guided into the respective cavities 10, 25.
Fig. 6 shows the zipper organ 40 in more detail, with a side elevational view (Fig. 6a), a longitudinal sectional view (Fig. 6b), a top plan view (Fig. 6c), a bottom view (Fig. 6d), a front view (Fig. 6e), a rear view (Fig. 6f), a cross,-sectional view (Fig. 6g) and a sectional front view (Fig. 6h).
The zipper organ 40 comprises an elongate body 41 which in the embodiment shown has a substantially rectangular shape. On opposite sides of the body 41, along the entire length thereof, a groove-shaped recess 42 is provided, whose dimensions are so chosen that it can guide thickened inwardly projecting end portions of the resilient wall parts 11, 26. A rib 43 which extends between the two recesses 42 tapers at a front end (Fig. 6h). Thus a tapered tip 44 is obtained which can drive apart the thickened end portions of the resilient wall parts 11, 26. The rib 44 together with a cross beam 45 forms a T-shaped rib. The cross beam 45 can be disposed in the cavity 10 or 25. Extending at an angle through the body 41 is a rectangular channel 46 of such dimensions that the thickened rim 14 or 28 of the screen 5 can pass through it. A thin portion 39a of the screen 5 passes through a slit-like gap 47. A broadened gap 47a is provided to make it possible for a locally thicker part of the screen 5, for example a weld with which the rim 14, 28 is connected to the cloth material of the screen 5, to pass through.
By moving the zipper organ 40 with its cross beam 45 in the cavity 10 or 25 in a direction x indicated in Fig. 6a, the thickened end portions of the resilient wall parts 11, 26 at the location of the rectangular channel 46 are driven apart so far that the thickened rim 14 or 28 can pass. Shoulder faces 48 guide the rim 14 or 28 during this movement into the cavity 10 or 25. After the zipper organ 40 has passed, the resilient wall parts 11, 26 return to their original position to enclose the thickened rim 14 or 28.
After the screen 5 has gotten worn or dirty or needs to be replaced for another type of screen, it can easily be unzipped again from the profiles 7, 23. With this advantageous use is being made of an unzipper organ 50.
Fig. 7 and 8 show two of such unzipper organs 50 which at the same time are being pulled backwards in a direction A while the screen 5 at one side is kept tensioned in place in the opposite direction B.
Each unzipper organ 50 comprises an elongate body 51 which in the embodiment shown has a substantially rectangular shape. On opposite sides of the body 51, along the entire length thereof, a groove-shaped recess 52 is provided, whose dimensions are so chosen that it can guide the thickened end portions of the resilient wall parts 11, 26. A rib 53 which extends between the two recesses 52 at a front end is provided with a wedge shaped lifting organ 54’. Thus a slanting tip is obtained which lifts the rim 14 or 28 of the screen 5 out of its cavity 10 or 25, and which can help to drive apart the thickened end portions of the resilient wall parts 11, 26. The rib 54 together with a cross beam 55 forms a T-shaped rib. The cross beam 55 can be disposed in the cavity 10 or 25.
The unzipper organ 50 comprises a freely rotatable wheel 60 which is mounted in the transverse direction y interspaced from the T-shaped rib. The rim 14 or 28 of the screen is guided along the wheel 60 during the unzipping action as shown in fig. 7 and 8. Owing to the forward pulling force A exerted on the organ 50 together with the backward restraining force B exerted on the screen 5, a transverse pulling force F gets exerted on the rim 14 or 28. This force F together with the lifting force of the lifting organ 54’ is well able to pull the rim 14 or 28 out of its cavity 10 or 25, particularly since the resilient wall parts 11, 26 at that time are pushed outwards somewhat. After the unzipper organ 50 has passed, the resilient wall parts 11, 26 return to their original position and are ready to receive a new rim of a new screen to be zipped into its profile.
In between the two unzipper organs 50 a ring-shaped guiding element 60 extends. During unzipping the ring-shaped guiding element 60 is forced over that part of the screen 5 which is freed from the connection to the profiles 7 and 23. Thus this part of the screen 5 gets accumulated into a sort of a bundle which can suitably remain to lie on top of the guiding cables which extend in between the two girders 3. After the entire screen 5 has been unzipped, the screen 5 can be pulled in the longitudinal direction of those guiding cables.
If desired a new screen, can then be pulled in the same longitudinal direction x over the guiding cables. This new screen then can be given enough time to retake its original shape because the large pulling forces may have deformed it somewhat. After that the new screen can be zipped quickly to the respective profiles 7 and 23 and thus get connected to the girder 3a and operator bar 20. After that the new screen can be operated and for example be displaced between its shielding and non-shielding positions whenever this is desired.
Besides the embodiment shown numerous variants are possible. For example the shapes, dimensioning and choice of materials of the various components can be different. When long lengths need to be spanned by the profiles, additional profiles can be used which can get connected thereto by means of suitable plastic connection pieces. Instead of having one or more flexible tongues coextruded to the profile, it is also possible to provide an a distinctive flexible elongate sealing strip which extends in the longitudinal direction and which is suitably coupled to the profile, for example by means of the profile at its back side being provided with an additional elongate insertion cavity into which a complementary coupling part of the strip can be inserted. Thus a user can flexibly insert a desired sealing strip depending on local circumstances like irregularities which need to be sealed and/or total span which needs to be covered.
Thus according to the invention a user-friendly shielding installation is obtained which makes it possible to zip and unzip screens at speeds of more than 1m/s without having to make use of the floor space underneath the screens. This in turn makes it possible to think about new uses of such screens. For example they can then be easily replaced by other types of screens during respective different stages of a plant growing process and/or a change of plants and/or easily be replaced by another type of screen during a seasonal change.
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2011571A NL2011571C2 (en) | 2013-10-08 | 2013-10-08 | A greenhouse equipped with an operable shielding installation of which screens during assembly can be zipped into and out of connection profiles. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2011571A NL2011571C2 (en) | 2013-10-08 | 2013-10-08 | A greenhouse equipped with an operable shielding installation of which screens during assembly can be zipped into and out of connection profiles. |
NL2011571 | 2013-10-08 |
Publications (1)
Publication Number | Publication Date |
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NL2011571C2 true NL2011571C2 (en) | 2015-04-09 |
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ID=49943454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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NL2011571A NL2011571C2 (en) | 2013-10-08 | 2013-10-08 | A greenhouse equipped with an operable shielding installation of which screens during assembly can be zipped into and out of connection profiles. |
Country Status (1)
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NL (1) | NL2011571C2 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0428235A1 (en) * | 1989-11-16 | 1991-05-22 | Hans Jan Pieter Kolk | Extruded section for use as a ridge or gutter section in a foil greenhouse, and foil greenhouse provided with such an extruded section |
NL1011546C2 (en) * | 1999-03-12 | 2000-09-14 | Holland Scherming B V | Screen construction for warehouse, has snap fit fastener with lip on one edge of screen cooperating with profile |
NL1014244C2 (en) * | 2000-02-01 | 2001-08-03 | Valk Systemen Bvvd | Screen device in greenhouse comprises columns supporting ceiling and has at least one profile suspended and displaceable crossways to its longitudinal direction in greenhouse |
EP1757873A2 (en) * | 2005-08-19 | 2007-02-28 | Hans Mathieu | Protecting device against extreme weather influences, especially for solar collectors, roof windows, glass and plastic roofs, greenhouses and other endangered objects |
NL1034598C2 (en) * | 2007-10-30 | 2009-05-06 | Peter Dekker Installaties B V | Department store, screen layout and screen. |
-
2013
- 2013-10-08 NL NL2011571A patent/NL2011571C2/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0428235A1 (en) * | 1989-11-16 | 1991-05-22 | Hans Jan Pieter Kolk | Extruded section for use as a ridge or gutter section in a foil greenhouse, and foil greenhouse provided with such an extruded section |
NL1011546C2 (en) * | 1999-03-12 | 2000-09-14 | Holland Scherming B V | Screen construction for warehouse, has snap fit fastener with lip on one edge of screen cooperating with profile |
NL1014244C2 (en) * | 2000-02-01 | 2001-08-03 | Valk Systemen Bvvd | Screen device in greenhouse comprises columns supporting ceiling and has at least one profile suspended and displaceable crossways to its longitudinal direction in greenhouse |
EP1757873A2 (en) * | 2005-08-19 | 2007-02-28 | Hans Mathieu | Protecting device against extreme weather influences, especially for solar collectors, roof windows, glass and plastic roofs, greenhouses and other endangered objects |
NL1034598C2 (en) * | 2007-10-30 | 2009-05-06 | Peter Dekker Installaties B V | Department store, screen layout and screen. |
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