EP1704797B1 - Worktable - Google Patents
Worktable Download PDFInfo
- Publication number
- EP1704797B1 EP1704797B1 EP06450040A EP06450040A EP1704797B1 EP 1704797 B1 EP1704797 B1 EP 1704797B1 EP 06450040 A EP06450040 A EP 06450040A EP 06450040 A EP06450040 A EP 06450040A EP 1704797 B1 EP1704797 B1 EP 1704797B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- load
- frame
- bearing part
- load bearing
- base frame
- 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.)
- Active
Links
- 238000005452 bending Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
- B25H1/16—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in height
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2200/00—General construction of tables or desks
- A47B2200/0035—Tables or desks with features relating to adjustability or folding
- A47B2200/005—Leg adjustment
- A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
- A47B2200/006—Leg adjustment with a motor, e.g. an electric motor with table or desk equipped with limit switches
Definitions
- the invention relates to a work table with a particular height-adjustable, a table top bearing frame, to whose adjustment at least one attacking on an actuator electric motor is provided with a control device.
- the document SE 516479 C2 relates to a generic height-adjustable table with a load cell, which is designed for example as a strain gauge and detects when a motor movement, whether a load change is present. In such a case, a reversal of the direction of rotation and / or a stop of the engine is reacted.
- the document WO 03/56976 A1 shows a height-adjustable table with, for example, spindle-driven motor in one or more legs.
- a piezo speaker element is provided, which is used as a load sensor. With the piezoelectric element, in turn, the presence of a load change during operation of the motor can be detected.
- the invention is therefore the object of a work table of the type described with simple structural means in such a way that obstacles in the trajectory of the work table can be detected in a simple manner with improved security, before with an impermissible force on the obstacle by the abutting work table is to be expected.
- the invention solves the problem by a work table with the features of claim 1.
- the load of at least one load-bearing part of the frame is detected directly via a strain gauge
- the respective table loads can be monitored with a comparatively high accuracy, regardless of the respective friction conditions in the guide region of the adjustment of the frame or in the range of the actuator to a engage appropriate change in the load of the load-bearing part in the engine control and to switch off the electric motor, where appropriate, after a reversal of the direction of rotation can.
- two or more load-bearing parts of the frame can be provided with the measuring strips, because due to the distribution of the total load of the work table on the monitored load-bearing parts, the load conditions can be determined more accurately.
- strain gauges of the load-bearing part of the frame can be advantageously designed as a bending beam.
- Such bending beams can be advantageously used to connect the actuator with the adjustment of the frame.
- the load-bearing part provided with the strain gage can of course also be subjected to tension or pressure in the manner of a load cell.
- the work table according to the Fig. 1 has a table top 1, which is supported by a frame 2, the telescopic legs 3 for height adjustment of the table top 1 has.
- These telescopic legs 3 are adjustable by means of electric motors 4 lengthwise.
- the motors 4 each drive an actuator 5, for example a spindle drive or a rack.
- a control device 6 is provided, which can be controlled via an input unit 7 and forms a conventional input field 8 for operating the work table.
- the load cell 11, such as load cells or piezoelectric elements, thus act on the control device 6 with signals that depend on the load on the table top 1, so that the motors 4 can be controlled depending on the load on the table top 1 to start the tabletop 1 at an obstacle, be it below or above the table top 1, determine and dependent on the motors 4, if necessary, to turn off after a reversal of the direction of rotation can. Since in general must be expected with different table loads, not the size of the load, but the size of the load change for the control of the motors 4 is evaluated to detect a lowered obstacle.
- strain gauges are used to capture the table load, which on a load-bearing part 13 of the frame 2 are arranged.
- the load-bearing part 13 not according to the Fig. 1 formed by the support 10 of the table top 1, but by a bending beam, which connects the actuator 5 with the adjustment part 9 of the telescopic legs 3.
- the conditional by the bending load of the load-bearing member 13 changes in length of the DehnmeßstMails 12 can be evaluated as a measure of the load of the part 13 and thus for the load on the table top 1 and used to control the motors 4.
- the frame 2 serves as a load-bearing part for determining the respective table load, which in turn a corresponding control of the motors 4 allowed when approaching an obstacle.
- the invention is not limited to the illustrated embodiments, because it is only important to provide a load-bearing part of the work table with a strain gauge.
- the evaluation of this monitoring of the table load can detect obstacles regardless of whether they are above or below the table top 1.
- the parts provided with the strain gauges indicate an additional load or a relief an obstacle on the top or bottom of the table top.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Machine Tool Units (AREA)
Description
Die Erfindung bezieht sich auf einen Arbeitstisch mit einem insbesondere der Höhe nach verstellbaren, eine Tischplatte tragenden Gestell, zu dessen Verstellung wenigstens ein an einem Stelltrieb angreifender elektrischer Motor mit einer Steuereinrichtung vorgesehen ist.The invention relates to a work table with a particular height-adjustable, a table top bearing frame, to whose adjustment at least one attacking on an actuator electric motor is provided with a control device.
Bei Arbeitstischen mit einem Gestell, das durch wenigstens einen von einem Motor angetriebenen Stelltrieb insbesondere der Höhe nach verstellt werden kann, besteht die Gefahr, daß bei einer Verstellung des Gestells ein Hindernis im Bereich des Stellweges angefahren wird, was eine Gefährdung des Hindernisses, aber auch des Arbeitstisches oder von Gegenständen auf dem Arbeitstisch mit sich bringt, wenn der Elektromotor nicht abgeschaltet wird. Um solche Hindernisse erfassen und dadurch Verletzungen vermeiden zu können, ist es bekannt (
Das Dokument
Das Dokument
Der Erfindung liegt somit die Aufgabe zugrunde, einen Arbeitstisch der eingangs geschilderten Art mit einfachen konstruktiven Mitteln so auszugestalten, daß Hindernisse in der Bewegungsbahn des Arbeitstisches in einfacher Weise mit verbesserter Sicherheit erfaßt werden können, bevor mit einer unzulässigen Krafteinwirkung auf das Hindernis durch den anschlagenden Arbeitstisch zu rechnen ist.The invention is therefore the object of a work table of the type described with simple structural means in such a way that obstacles in the trajectory of the work table can be detected in a simple manner with improved security, before with an impermissible force on the obstacle by the abutting work table is to be expected.
Die Erfindung löst die gestellte Aufgabe durch einen Arbeitstisch mit den Merkmalen des Anspruchs 1.The invention solves the problem by a work table with the features of
Da zufolge dieser Maßnahmen die Belastung zumindest eines lastabtragenden Teils des Gestells unmittelbar über einen Dehnmeßstreifen erfaßt wird, können die jeweiligen Tischbelastungen mit einer vergleichsweise hohen Genauigkeit unabhängig von den jeweiligen Reibungsverhältnissen im Führungsbereich des Verstellteils des Gestells oder im Bereich des Stelltriebes überwacht werden, um bei einer entsprechenden Änderung der Belastung des lastabtragenden Teils in die Motorsteuerung eingreifen und den elektrischen Motor gegebenenfalls nach einer Umpolung der Drehrichtung abschalten zu können. Zur Verbesserung der Überwachung der Belastung des Arbeitstisches bzw. von Belastungsänderungen können zwei oder mehrere lastabtragende Teile des Gestells mit den Meßstreifen versehen werden, weil aufgrund der Aufteilung der Gesamtbelastung des Arbeitstisches auf die überwachten lastabtragenden Teile die Belastungsverhältnisse genauer ermittelt werden können.Since, according to these measures, the load of at least one load-bearing part of the frame is detected directly via a strain gauge, the respective table loads can be monitored with a comparatively high accuracy, regardless of the respective friction conditions in the guide region of the adjustment of the frame or in the range of the actuator to a engage appropriate change in the load of the load-bearing part in the engine control and to switch off the electric motor, where appropriate, after a reversal of the direction of rotation can. To improve the monitoring of the load of the work table or load changes two or more load-bearing parts of the frame can be provided with the measuring strips, because due to the distribution of the total load of the work table on the monitored load-bearing parts, the load conditions can be determined more accurately.
Beim Einsatz von Dehnmeßstreifen kann der lastabtragende Teil des Gestells vorteilhaft als Biegeträger ausgebildet sein. Solche Biegeträger lassen sich vorteilhaft zur Verbindung des Stelltriebes mit dem Verstellteil des Gestells einsetzen. Der mit dem Dehnmeßstreifen versehene lastabtragende Teil kann aber auch selbstverständlich nach Art einer Kraftmeßdose auf Zug oder Druck belastet werden.When using strain gauges of the load-bearing part of the frame can be advantageously designed as a bending beam. Such bending beams can be advantageously used to connect the actuator with the adjustment of the frame. However, the load-bearing part provided with the strain gage can of course also be subjected to tension or pressure in the manner of a load cell.
In den Zeichnungen ist in
- Fig. 1
- einen Arbeitstisch in einer schematischen Seitenansicht nach Art eines Blockschaltbildes,
- Fig. 2
- das Gestell ausschnittsweise im Bereich eines der Länge nach verstellbaren Tischbeines in einem größeren Maßstab und
- Fig. 3
- eine Konstruktionsvariante eines Arbeitstisches in einer schematischen Stirnansicht.
- Fig. 1
- a work table in a schematic side view in the manner of a block diagram,
- Fig. 2
- the frame fragmentary in the range of a lengthwise adjustable table leg on a larger scale and
- Fig. 3
- a construction variant of a work table in a schematic end view.
Der Arbeitstisch gemäß der
Die mit dem ausziehbaren Verstellteil 9 der Teleskopbeine 3 verbundenen Auflager 10 der Tischplatte 1 sind über Kraftaufnehmer 11 an den Stelltrieben 5 abgestützt. Die Kraftaufnehmer 11, beispielsweise Kraftmeßdosen oder Piezoelemente, beaufschlagen somit die Steuereinrichtung 6 mit Signalen, die von der Belastung der Tischplatte 1 abhängen, so daß die Motoren 4 in Abhängigkeit von der Belastung der Tischplatte 1 angesteuert werden können, um ein Anfahren der Tischplatte 1 an ein Hindernis, sei es unter- oder oberhalb der Tischplatte 1, feststellen und davon abhängig die Motoren 4 gegebenenfalls nach einer Umpolung der Drehrichtung abschalten zu können. Da im allgemeinen mit unterschiedlichen Tischbelastungen gerechnet werden muß, wird zur Erkennung eines angefahrenen Hindernisses nicht die Größe der Belastung, sondern die Größe der Belastungsänderung für die Steuerung der Motoren 4 ausgewertet.The supports 10 of the
Wie die
In der
Es braucht wohl nicht besonders hervorgehoben zu werden, daß die Erfindung nicht auf die dargestellten Ausführungsbeispiele beschränkt ist, weil es lediglich darauf ankommt, einen lastabtragenden Teil des Arbeitstisches mit einem Dehnmeßstreifen zu versehen. Die Auswertung dieser Überwachung der Tischbelastung kann dabei Hindernisse unabhängig davon erfassen, ob sie sich ober- oder unterhalb der Tischplatte 1 befinden. Je nach der Anordnung . der mit den Dehnmeßstreifen versehenen Teile zeigt eine zusätzliche Belastung oder eine Entlastung ein Hindernis auf der Ober- oder Unterseite der Tischplatte an.It need not be emphasized that the invention is not limited to the illustrated embodiments, because it is only important to provide a load-bearing part of the work table with a strain gauge. The evaluation of this monitoring of the table load can detect obstacles regardless of whether they are above or below the
Claims (3)
- A working table having a base frame (2), adjustable particularly in height, at least one electric motor (4) engaging with an actuating drive (5) being provided for adjusting said frame, and having a control device (6), at least one load bearing part (13) of the base frame (2) having a strain gauge (12), and the strain gauge (12) controlling the control device (6) for the motor (4) depending on the amount of the load change of the load bearing part (13), characterized in that the load bearing part (13) having the strain gauge (12) connects the actuating drive (5) to an adjustable part (9) of a telescoping leg (3) of the base frame (2).
- The working table according to claim 1, characterized in that the load bearing part (13) is designed as a bending beam.
- The working table according to claim 1 or 2, characterized in that two or more load bearing parts of the base frame (2) have strain gauges (12).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0052005A AT501146B8 (en) | 2005-03-25 | 2005-03-25 | BENCH |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1704797A1 EP1704797A1 (en) | 2006-09-27 |
EP1704797B1 true EP1704797B1 (en) | 2011-08-03 |
Family
ID=36463373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06450040A Active EP1704797B1 (en) | 2005-03-25 | 2006-03-22 | Worktable |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060266791A1 (en) |
EP (1) | EP1704797B1 (en) |
AT (2) | AT501146B8 (en) |
DE (1) | DE202006020137U1 (en) |
DK (1) | DK1704797T3 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9326597B2 (en) | 2009-12-16 | 2016-05-03 | Logicdata Electronic & Software Entwicklungs Gmbh | Device and method for detecting a collision of a displaceable furniture part and an obstacle |
DE202021103270U1 (en) | 2021-06-17 | 2022-10-06 | Veyhl Gmbh | Height-adjustable table leg, table frame and table |
WO2022263284A1 (en) | 2021-06-17 | 2022-12-22 | Veyhl Gmbh | Vertically adjustable table leg, table frame and table |
US11662200B2 (en) | 2018-04-18 | 2023-05-30 | Logicdata Electronic & Software Entwiclungs Gmbh | Sensor assembly, actuator, control system, electrically adjustable piece of furniture and method for operating an electrically adjustable piece of furniture |
EP4273558A1 (en) * | 2022-05-04 | 2023-11-08 | Rol Ergo AB | Collision detection device for adjustable furniture |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007276026A (en) * | 2006-04-04 | 2007-10-25 | Fanuc Ltd | Wire cut electric discharge machine |
ATE469577T1 (en) * | 2006-08-24 | 2010-06-15 | Kesseboehmer Produktions Gmbh | DEVICE AND METHOD FOR DETECTING FURNITURE COLLISIONS |
US20090028656A1 (en) * | 2007-07-26 | 2009-01-29 | Sawing Systems Inc. | Force monitoring and control of router |
SE532213C2 (en) * | 2008-09-24 | 2009-11-17 | Swedestyle Ab | Device for mounting a table top on a rack with drive means |
DE202010005411U1 (en) * | 2010-05-08 | 2011-08-09 | Dewert Antriebs- Und Systemtechnik Gmbh | Electromotive adjusting device for a furniture |
DE202011003743U1 (en) | 2011-03-10 | 2011-05-05 | Oelschläger Metalltechnik GmbH | Height-adjustable table frame, especially for a desk, and table with selbigem |
DE102011007540A1 (en) * | 2011-04-15 | 2012-10-18 | Kesseböhmer Produktions GmbH & Co. KG | Calibratable telescope column, furniture with calibratable telescope column, and method for calibration of a telescope column |
EP2685867B1 (en) | 2012-05-24 | 2023-03-15 | Varidesk, LLC | Adjustable desktop platform |
US10827829B1 (en) | 2012-10-10 | 2020-11-10 | Steelcase Inc. | Height adjustable support surface and system for encouraging human movement and promoting wellness |
US10085562B1 (en) | 2016-10-17 | 2018-10-02 | Steelcase Inc. | Ergonomic seating system, tilt-lock control and remote powering method and appartus |
US10038952B2 (en) | 2014-02-04 | 2018-07-31 | Steelcase Inc. | Sound management systems for improving workplace efficiency |
US9486070B2 (en) | 2012-10-10 | 2016-11-08 | Stirworks Inc. | Height-adjustable support surface and system for encouraging human movement and promoting wellness |
CN106152198A (en) * | 2015-04-28 | 2016-11-23 | 无锡百科知识产权有限公司 | A kind of gas-cooker special scalable air-cushion device |
CN106152197A (en) * | 2015-04-28 | 2016-11-23 | 无锡百科知识产权有限公司 | A kind of special adjustable supporting device of gas-cooker |
US9921726B1 (en) | 2016-06-03 | 2018-03-20 | Steelcase Inc. | Smart workstation method and system |
US11019920B2 (en) | 2016-09-23 | 2021-06-01 | Varidesk, Llc | Electrically-lifted computer desk and office desk thereof |
CN206390562U (en) | 2016-09-23 | 2017-08-11 | 廖良成 | Electric lifting computer desk and its desk |
WO2019040469A1 (en) * | 2017-08-22 | 2019-02-28 | Paul Anthony A | Method and apparatus for raising and lowering of desk within a work surface |
CN108705499A (en) * | 2018-08-01 | 2018-10-26 | 芜湖绿琼农业科技有限公司 | A kind of R&D work platform of environmental improvement equipment |
US11510487B2 (en) * | 2018-12-06 | 2022-11-29 | Zhejiang Jiecang Linear Motion Technology Co., Ltd. | Desktop lifting platform with improved safety |
DE102019113196A1 (en) * | 2019-05-17 | 2020-11-19 | Veyhl Gmbh | Height-adjustable table with an operating unit with a remote projection device |
DE202019102842U1 (en) * | 2019-05-20 | 2020-08-24 | Dewertokin Gmbh | Electromotive adjusting device for furniture, in particular table furniture |
CN110606443A (en) * | 2019-06-11 | 2019-12-24 | 蚌埠学院 | Hydraulic jack with weight display |
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SE8400484D0 (en) * | 1984-01-31 | 1984-01-31 | Slim Borgudd | DEVICE FOR SURGERY OF DYNAMIC AND STATIC LOAD PACKAGING BY A TOWING DEVICE FOR EX DRIVER |
US5391844A (en) * | 1992-04-03 | 1995-02-21 | Weigh-Tronix Inc | Load cell |
FR2719752B1 (en) * | 1994-05-10 | 1996-08-09 | Exess Technologie | Arrangement of a table with controlled mobile elements, in particular for people with reduced mobility. |
US5861558A (en) * | 1996-02-28 | 1999-01-19 | Sigma-Netics, Inc. | Strain gauge and method of manufacture |
US6230571B1 (en) * | 1997-06-02 | 2001-05-15 | The Penn State Research Foundation | Beam strain gauge |
US5905212A (en) * | 1997-06-04 | 1999-05-18 | Continental Emsco Company | Load and deflection measurement system for elastomeric bearings |
US6089106A (en) * | 1998-09-04 | 2000-07-18 | Breed Automotive Technology, Inc. | Force sensor assembly |
US6286441B1 (en) * | 1999-04-30 | 2001-09-11 | Steelcase Development Corporation | Height adjustable work surface and control therefor |
US6924441B1 (en) * | 1999-09-29 | 2005-08-02 | Hill-Rom Services, Inc. | Load cell apparatus |
US6585079B1 (en) * | 1999-12-14 | 2003-07-01 | 1994 Weyer Family Limited Partnership | Work platform with rotary actuator |
SE516479C2 (en) | 2000-05-11 | 2002-01-22 | Artektron Ab | Device is for automatic stopping and-or reversing table top ascending movement to counteract jamming tendency, with table being raisable and lowerable by motor drive |
DE10115598C1 (en) * | 2001-03-29 | 2002-07-11 | Schulte Bunert Gmbh | Jointing machine has drive motor connected to helical gear, linear guides, control, force transducer, support plates, platform and slide guide |
DE60225335T3 (en) | 2001-12-13 | 2022-04-28 | Linak A/S | ADJUSTABLE CONSTRUCTION, PREFERABLY A PIECE OF FURNITURE, AND AN ANTI-PINCH PROTECTION AND DRIVE UNIT FOR IT |
AT410626B (en) * | 2002-02-26 | 2003-06-25 | Koch Walter Dipl Ing | Work table has controller that reverses direction of rotation of adjustment motor depending on detected parameter and/or motor load change, switches motor off after resulting reverse rotation |
-
2005
- 2005-03-25 AT AT0052005A patent/AT501146B8/en not_active IP Right Cessation
-
2006
- 2006-03-22 DE DE202006020137U patent/DE202006020137U1/en not_active Expired - Lifetime
- 2006-03-22 DK DK06450040.8T patent/DK1704797T3/en active
- 2006-03-22 AT AT06450040T patent/ATE518446T1/en active
- 2006-03-22 EP EP06450040A patent/EP1704797B1/en active Active
- 2006-03-24 US US11/389,199 patent/US20060266791A1/en not_active Abandoned
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9326597B2 (en) | 2009-12-16 | 2016-05-03 | Logicdata Electronic & Software Entwicklungs Gmbh | Device and method for detecting a collision of a displaceable furniture part and an obstacle |
US11662200B2 (en) | 2018-04-18 | 2023-05-30 | Logicdata Electronic & Software Entwiclungs Gmbh | Sensor assembly, actuator, control system, electrically adjustable piece of furniture and method for operating an electrically adjustable piece of furniture |
DE202021103270U1 (en) | 2021-06-17 | 2022-10-06 | Veyhl Gmbh | Height-adjustable table leg, table frame and table |
WO2022263284A1 (en) | 2021-06-17 | 2022-12-22 | Veyhl Gmbh | Vertically adjustable table leg, table frame and table |
DE102021206231A1 (en) | 2021-06-17 | 2022-12-22 | Veyhl Gmbh | Height-adjustable table leg, table frame and table |
EP4273558A1 (en) * | 2022-05-04 | 2023-11-08 | Rol Ergo AB | Collision detection device for adjustable furniture |
WO2023213762A1 (en) * | 2022-05-04 | 2023-11-09 | Rol Ergo Ab | Collision detection device for adjustable furniture |
Also Published As
Publication number | Publication date |
---|---|
AT501146A4 (en) | 2006-07-15 |
AT501146B1 (en) | 2006-07-15 |
ATE518446T1 (en) | 2011-08-15 |
AT501146B8 (en) | 2007-02-15 |
DE202006020137U1 (en) | 2007-12-20 |
EP1704797A1 (en) | 2006-09-27 |
DK1704797T3 (en) | 2011-11-21 |
US20060266791A1 (en) | 2006-11-30 |
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