DE20215556U1 - Inclination control system for field of solar cells has cord wrapper around bottom ends of shafts to rotate solar panels to follow movement of sun - Google Patents
Inclination control system for field of solar cells has cord wrapper around bottom ends of shafts to rotate solar panels to follow movement of sunInfo
- Publication number
- DE20215556U1 DE20215556U1 DE20215556U DE20215556U DE20215556U1 DE 20215556 U1 DE20215556 U1 DE 20215556U1 DE 20215556 U DE20215556 U DE 20215556U DE 20215556 U DE20215556 U DE 20215556U DE 20215556 U1 DE20215556 U1 DE 20215556U1
- Authority
- DE
- Germany
- Prior art keywords
- control system
- shaft
- base body
- hollow
- shafts
- 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
Links
- 239000000523 sample Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 241001247287 Pentalinon luteum Species 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
- F24S30/45—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
- F24S30/452—Vertical primary axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S2030/10—Special components
- F24S2030/13—Transmissions
- F24S2030/133—Transmissions in the form of flexible elements, e.g. belts, chains, ropes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S2030/10—Special components
- F24S2030/13—Transmissions
- F24S2030/136—Transmissions for moving several solar collectors by common transmission elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S2030/10—Special components
- F24S2030/13—Transmissions
- F24S2030/137—Transmissions for deriving one movement from another one, e.g. for deriving elevation movement from azimuth movement
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
Description
Steueranlage für SolarfelderControl system for solar fields
Die Erfindung betrifft eine Steueranlage für individuell gestaltbare Solarfelder.The invention relates to a control system for individually designed solar fields.
Es sind Anordnungen von Sonnen- und Solarkollektoren in den verschiedensten Bauarten bekannt. Generelles Problem dieser Anlagen ist, die Sonneneinstrahlung so effektiv wie möglich zu nutzen. So beinhaltet die DE 3627480 eine Konstruktion, die es ermöglichen soll, die Kollektoren so zu verstellen, dass die Sonneneinstrahlung zu jeder Tages- und Jahreszeit rechtwinklig auf die Einstrahlungsfläche der Kollektoren auftrifft. Nachteilig bei dieser Lösung, basierend darauf, dass eine Elementengruppe über eine horizontal drehbar gelagerte Welle, welche mit einem Schneckengetriebe verbunden ist, gesteuert wird, ist die Bedienung von Hand und der damit begrenzte Einsatz von Sonnenkollektoren.Arrangements of sun and solar collectors in a wide variety of designs are known. The general problem with these systems is to use the solar radiation as effectively as possible. DE 3627480 contains a design that is intended to make it possible to adjust the collectors so that the solar radiation hits the collectors' irradiation surface at right angles at any time of day or year. The disadvantage of this solution, based on the fact that a group of elements is controlled via a horizontally rotating shaft that is connected to a worm gear, is that it has to be operated manually and the resulting limited use of solar collectors.
Ferner ist nach der DE 199 27 839 Al eine Vorrichtung zur Konzentration von Sonnenstrahlen bekannt, die über eine Tragkonstruktion, welche aus baugleich ausgebildeten Stellgliedern, die als Teleskopspindeln ausgebildet sind, gesteuert wird. Die hier veröffentlichte Konstruktion ist äußerst kompliziert und für Großanlagen ungeeignet.Furthermore, according to DE 199 27 839 A1, a device for concentrating solar rays is known which is controlled via a supporting structure made of identically constructed actuators designed as telescopic spindles. The construction published here is extremely complicated and unsuitable for large-scale systems.
Gleichfalls ist eine hydraulische Nachführung von Kollektoren nach dem Sonnenstand in der DE 101 17 622 Al beschrieben. So kommen für die horizontale und vertikale Nachführung von Kollektoren hydraulische Stellmotore über entsprechende Übertragungselemente zur Anwendung. Die mit großem technischen Aufwand verbundene Steuerhydraulik ist jedoch gleichfalls für Großanlagen zu teuer.DE 101 17 622 A1 also describes a hydraulic tracking of collectors according to the position of the sun. Hydraulic actuators are used for the horizontal and vertical tracking of collectors via appropriate transmission elements. However, the control hydraulics, which involve a great deal of technical effort, are also too expensive for large-scale systems.
Die Erfindung hat sich daher die Aufgabe gestellt, eine Steueranlage zur Nachführung von Sonnenkollektoren zu entwickeln die sich für jede Größe angedachter Solarfelder eignet und mit einfachsten und somit kostengünstigen Mitteln realisierbar ist.The invention therefore has the task of developing a control system for tracking solar collectors that is suitable for any size of solar field and can be implemented using the simplest and therefore most cost-effective means.
Die Aufgabe wird erfindungsgemäß durch die Merkmale des Schutzanspruches 1 und den Unteransprüchen gelöst. Durch dieThe object is achieved according to the invention by the features of claim 1 and the subclaims. By the
t· t·*»t· t·*»
Erfindung wird ermöglicht, dass der Grundkörper sowie die Füße aus lediglich rollgeformtem Stahlblech mit Verstärkungssicken gefertigt werden kann. Es ergibt sich so ein geschlossenes Trageprofil mit integriertem Kabelkanal mit Montagedeckel. Die gesamte Mechanik ist so gegen Umwelteinflüsse geschützt. Wesentlichster Vorteil der Erfindung ist, dass der Grundkörper in beliebiger Länge montierbar ist, so dass in einer Reihe von 1 m bis 1000 m, je nach Standort verschiedene und nicht nur geradlinig ausgeführte Solarfelder entstehen können. In der Zeichnung ist ein Ausführungsbeispiel der erfindungsgemäßen Steueranlage dargestellt. Die Basis der Steueranlage besteht aus einem Grundkörper 1 mit einem integriertem Kabelkanal 2 mit Montagedeckel aus verzinktem Stahlblech, wobei je nach Größe der Anlage Verstärkungssicken 3 eingebracht sind. Der Grundkörper 1 wird durch beidseitig in bestimmten Abständen angebrachten Füßen 4 aus rollgeformten Stahlblech gehalten. Im Grundkörper 1 sind in vorgesehenen Abständen senkrecht Achskörper 5 eingelassen und mit Halteklammern 6 fest mit dem Grundkörper 1 verbunden. Durch den Achskörper wird, eine Hohlwelle 7, welche oben durch ein Schrägrollenlager 8 und unten durch ein Kugellager 9 drehbar gelagert ist, geführt. Der aus dem oberen Ende des Achskörpers 5 herausragende Teil der Hohlwelle 7 ist fest mit Tragarmen 10 verbunden. In die am vorderen Ende gekröpften Tragarme 10 sind Bohrungen 11 eingearbeitet, in welche Laschen 12 über eine Verbindungswellen 13 drehbar gelagert eingreifen. Die Laschen 12 sind an ihren Außenseiten mit einer Traverse 14 für eine vorgesehene Kollektorenaufnahme fest verbunden. Auf dem an unteren Ende des Achskörpers 5 herausragende Überstand der Hohlwelle 7 ist ein entsprechend ausgestaltetes Antriebsrad aufgebracht, welches von einem Übertragungselement 16 wie einem Drahtseil, einer Kette oder einem Zahnriemen umspannt wird und die Verbindung über Spannrollen 17 zu allen anzu-The invention makes it possible for the base body and the feet to be made from roll-formed sheet steel with reinforcing beads. This results in a closed support profile with an integrated cable duct with mounting cover. The entire mechanism is thus protected against environmental influences. The most important advantage of the invention is that the base body can be mounted in any length, so that different solar fields and not just straight ones can be created in a row from 1 m to 1000 m, depending on the location. The drawing shows an embodiment of the control system according to the invention. The basis of the control system consists of a base body 1 with an integrated cable duct 2 with mounting cover made of galvanized sheet steel, with reinforcing beads 3 being introduced depending on the size of the system. The base body 1 is held by feet 4 made of roll-formed sheet steel that are attached at specific intervals on both sides. Axle bodies 5 are embedded vertically in the base body 1 at specified intervals and are firmly connected to the base body 1 with holding clamps 6. A hollow shaft 7 is guided through the axle body, which is rotatably supported at the top by an angular contact roller bearing 8 and at the bottom by a ball bearing 9. The part of the hollow shaft 7 protruding from the upper end of the axle body 5 is firmly connected to support arms 10. Holes 11 are machined into the support arms 10, which are cranked at the front end, into which lugs 12 engage in a rotatable manner via a connecting shaft 13. The lugs 12 are firmly connected on their outer sides to a cross member 14 for a designated collector holder. A suitably designed drive wheel is mounted on the protrusion of the hollow shaft 7 protruding at the lower end of the axle body 5, which is encircled by a transmission element 16 such as a wire rope, a chain or a toothed belt and the connection via tension rollers 17 to all the
steuernden Traversen 14 für Kollektoren herstellt. Um die Traverse 14 in der Regel zwischen 0° bis 90°, je nach Sonnenstand bewegen zu können ist die Traverse 14 mittig und oberhalb der Verbindungswelle 13 mit einem Stößelaufnahmeblechcontrolling traverses 14 for collectors. In order to be able to move the traverse 14 generally between 0° and 90°, depending on the position of the sun, the traverse 14 is mounted centrally and above the connecting shaft 13 with a tappet support plate
18 verbunden, welches am unteren Ende mit einer Tastarmhohlstößelwelle 19, welche durch die Hohlwelle 7 hindurchgeführt wird und die Verbindung zu einem an unteren Ende der Tastarmhohlstößelwelle 19 angebrachten Tastfinger 20, hergestellt. Der Tastfinger 20 gleitet über einen entsprechend winklig im Grundkörper 1 eingesetzten Sonnanbahnlaufring 21 zur Erreichung der genannten Winkelstellung. Die Tastarmhohlstößelwelle18, which is connected at the lower end to a probe arm hollow tappet shaft 19, which is guided through the hollow shaft 7 and the connection to a probe finger 20 attached to the lower end of the probe arm hollow tappet shaft 19. The probe finger 20 slides over a Sonnan track race 21 inserted at an appropriate angle in the base body 1 to achieve the mentioned angular position. The probe arm hollow tappet shaft
19 ist gleichzeitig als Stromkabelführung 22 nutzbar. Zur Vermeidung von Witterungseinflüssen ist die aus der Hohlwelle herausfahrbare Tastarmhohlstößelwelle 19 mit einer Schutzhülle 23 versehen. Ein mit dem Übertragungselement 16 (Seil, Kette, Zahnriemen) integrierter Getriebemotor 24 übernimmt so den möglichen Antrieb von bis zu Einhundert Kollektoren. Durch eine Elektroniksonnenuhr, die mit einer Fotozelle gekoppelt ist, wird der Getriebemotor 24 angesteuert, so dass die vollautomatische Nachführung der Sonne gewährleistet ist. Außerdem besteht die Möglichkeit durch einen Windwächter bei Bedarf die Anlage auf Sturmstellung umzuschalten.19 can also be used as a power cable guide 22. To avoid weather influences, the hollow tappet shaft 19, which can be extended from the hollow shaft, is provided with a protective cover 23. A gear motor 24 integrated with the transmission element 16 (cable, chain, toothed belt) can thus drive up to one hundred collectors. The gear motor 24 is controlled by an electronic sundial, which is coupled to a photocell, so that fully automatic tracking of the sun is guaranteed. It is also possible to switch the system to storm mode if necessary using a wind monitor.
BezugszeichenReference symbols
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20215556U DE20215556U1 (en) | 2002-10-10 | 2002-10-10 | Inclination control system for field of solar cells has cord wrapper around bottom ends of shafts to rotate solar panels to follow movement of sun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20215556U DE20215556U1 (en) | 2002-10-10 | 2002-10-10 | Inclination control system for field of solar cells has cord wrapper around bottom ends of shafts to rotate solar panels to follow movement of sun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20215556U1 true DE20215556U1 (en) | 2003-01-16 |
Family
ID=7975842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20215556U Expired - Lifetime DE20215556U1 (en) | 2002-10-10 | 2002-10-10 | Inclination control system for field of solar cells has cord wrapper around bottom ends of shafts to rotate solar panels to follow movement of sun |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE20215556U1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1026606C2 (en) * | 2004-07-07 | 2006-01-10 | Henk Slebos | Solar panel arrangement, used in agriculture, has panels arranged in rows aligned with highest position of sun in sky |
| DE102005014320A1 (en) * | 2005-03-30 | 2006-10-12 | Gümpelein, Manuela | Tracking device for a photovoltaic system |
| WO2007087755A1 (en) * | 2006-02-03 | 2007-08-09 | Binxuan Yi | Automatically tracing and control method and system of solar cell |
| WO2008010250A3 (en) * | 2006-07-21 | 2008-06-19 | Eric Res S R L | Support device for photovoltaic panels with azimuth and altitude solar tracking |
| DE102007059202A1 (en) * | 2007-08-29 | 2009-03-05 | ciba Ingenieure für Automatisierung GmbH & Co. KG | Solar array drive assembly for solar module, has humidification device e.g. sprinkler, provided above module carrier for comprehensive cooling, where assembly is operated depending on relative stand of celestial body using drive system |
| ITVR20080097A1 (en) * | 2008-09-01 | 2010-03-02 | Marco Gonella | MODULAR DEVICE FOR SUPPORTING SOLAR PANELS AND ITS SYSTEM |
| CN101371366B (en) * | 2006-02-03 | 2010-11-17 | 易斌宣 | Automatic tracking control method and system for solar cells |
| ES2351811A1 (en) * | 2008-10-08 | 2011-02-10 | Jesus Almazan Sanchez | Photovoltaic captation system. (Machine-translation by Google Translate, not legally binding) |
| ITMI20100282A1 (en) * | 2010-02-23 | 2011-08-24 | Elletiemme S R L | SOLAR TRACKING DEVICE |
| CN103488187A (en) * | 2013-09-10 | 2014-01-01 | 盐城工学院 | Solar cell panel automatic tracking device |
| EP2792967A3 (en) * | 2013-04-15 | 2015-01-07 | DC Energy Ltd | A modular panel-mounting system |
| CN105929856A (en) * | 2016-07-01 | 2016-09-07 | 张翼鹏 | Solar double-shaft tracking linked transmission mechanism |
| CN107095530B (en) * | 2017-04-19 | 2018-09-18 | 陈忠海 | A kind of ornamental flowerpot photovoltaic board group part presentation device of municipal administration |
-
2002
- 2002-10-10 DE DE20215556U patent/DE20215556U1/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1026606C2 (en) * | 2004-07-07 | 2006-01-10 | Henk Slebos | Solar panel arrangement, used in agriculture, has panels arranged in rows aligned with highest position of sun in sky |
| DE102005014320A1 (en) * | 2005-03-30 | 2006-10-12 | Gümpelein, Manuela | Tracking device for a photovoltaic system |
| CN101371366B (en) * | 2006-02-03 | 2010-11-17 | 易斌宣 | Automatic tracking control method and system for solar cells |
| WO2007087755A1 (en) * | 2006-02-03 | 2007-08-09 | Binxuan Yi | Automatically tracing and control method and system of solar cell |
| WO2008010250A3 (en) * | 2006-07-21 | 2008-06-19 | Eric Res S R L | Support device for photovoltaic panels with azimuth and altitude solar tracking |
| DE102007059202A1 (en) * | 2007-08-29 | 2009-03-05 | ciba Ingenieure für Automatisierung GmbH & Co. KG | Solar array drive assembly for solar module, has humidification device e.g. sprinkler, provided above module carrier for comprehensive cooling, where assembly is operated depending on relative stand of celestial body using drive system |
| ITVR20080097A1 (en) * | 2008-09-01 | 2010-03-02 | Marco Gonella | MODULAR DEVICE FOR SUPPORTING SOLAR PANELS AND ITS SYSTEM |
| ES2351811A1 (en) * | 2008-10-08 | 2011-02-10 | Jesus Almazan Sanchez | Photovoltaic captation system. (Machine-translation by Google Translate, not legally binding) |
| ITMI20100282A1 (en) * | 2010-02-23 | 2011-08-24 | Elletiemme S R L | SOLAR TRACKING DEVICE |
| EP2792967A3 (en) * | 2013-04-15 | 2015-01-07 | DC Energy Ltd | A modular panel-mounting system |
| CN103488187A (en) * | 2013-09-10 | 2014-01-01 | 盐城工学院 | Solar cell panel automatic tracking device |
| CN103488187B (en) * | 2013-09-10 | 2016-02-24 | 盐城工学院 | A kind of solar panel autotracker |
| CN105929856A (en) * | 2016-07-01 | 2016-09-07 | 张翼鹏 | Solar double-shaft tracking linked transmission mechanism |
| CN105929856B (en) * | 2016-07-01 | 2018-08-31 | 张翼鹏 | Solar biaxial tracks actuator linkage |
| CN107095530B (en) * | 2017-04-19 | 2018-09-18 | 陈忠海 | A kind of ornamental flowerpot photovoltaic board group part presentation device of municipal administration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3303940B1 (en) | Tracking device | |
| DE20215556U1 (en) | Inclination control system for field of solar cells has cord wrapper around bottom ends of shafts to rotate solar panels to follow movement of sun | |
| EP1710651B1 (en) | Tracking device for a photovoltaic system | |
| EP1549888B1 (en) | Controller for solar fields | |
| EP2617063B1 (en) | Cable installation for pivoting a support structure for photovoltaic modules or comparable devices | |
| DE202005002411U1 (en) | Rack for storage of solar modules | |
| WO2011147437A1 (en) | Mounting rack for a photovoltaic module and tracking device for a photovoltaic installation | |
| DE202005001875U1 (en) | Adjustable awning with a tarpaulin | |
| DE2210828A1 (en) | AUTOMATIC DRIVE FOR SLIDING DOORS | |
| CH705633A1 (en) | Solar plant. | |
| WO2001092790A1 (en) | Tracking device | |
| DE102008057388A1 (en) | Solar system i.e. photovoltaic system, has tensioning cable winches running parallel to each other, where cable winches are components of cable-twisted structure that serves as coherent unit and is tracked at solar altitude | |
| DE202014005964U1 (en) | Traceable photovoltaic module | |
| EP2204511B1 (en) | Building with a rotation device | |
| DE20021890U1 (en) | Tracking device | |
| EP1748135A3 (en) | Carriage and guide rail | |
| EP4455442A2 (en) | Insulating glass unit with integrated solar panel | |
| AT513502B1 (en) | Traceable photovoltaic module | |
| DE202018106736U1 (en) | Sandbox System | |
| DE102004037722B4 (en) | Drive and fastening device for a solar following solar panel | |
| EP1970643B1 (en) | Device and method for tracing at least one module in a solar module array | |
| DE202004008911U1 (en) | Photovoltaic system for installation on two sides of pitched roof of building has control system with clock and control sensor for energizing part of photovoltaic system | |
| AT512839B1 (en) | Holder for a trackable solar system | |
| DE102011000039A1 (en) | Mounting system of solar panel installed at roof of industrial building, has carrier that is connected with two foot elements over hinges, and is displaceable around three-angular positions with respect to axes of hinge | |
| EP4518144A1 (en) | Shading and energy harvesting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 20030220 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20050926 |
|
| R157 | Lapse of ip right after 6 years |
Effective date: 20090501 |