EP2205373B1 - Tiefziehvorrichtung - Google Patents

Tiefziehvorrichtung Download PDF

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Publication number
EP2205373B1
EP2205373B1 EP08804209.8A EP08804209A EP2205373B1 EP 2205373 B1 EP2205373 B1 EP 2205373B1 EP 08804209 A EP08804209 A EP 08804209A EP 2205373 B1 EP2205373 B1 EP 2205373B1
Authority
EP
European Patent Office
Prior art keywords
deep
tool
plate
workpiece
projections
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.)
Not-in-force
Application number
EP08804209.8A
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German (de)
English (en)
French (fr)
Other versions
EP2205373A2 (de
Inventor
Michael Matheisl
Thomas Novacek
Peter Khu
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Inventio AG
Original Assignee
Inventio AG
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Filing date
Publication date
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Priority to EP08804209.8A priority Critical patent/EP2205373B1/de
Publication of EP2205373A2 publication Critical patent/EP2205373A2/de
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Publication of EP2205373B1 publication Critical patent/EP2205373B1/de
Not-in-force legal-status Critical Current
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing

Definitions

  • the present invention relates to a thermoforming apparatus and a method with a corresponding thermoforming apparatus.
  • Thermoforming is generally understood to mean tensile pressure forming or pressure forming of flat-shaped workpieces to form a hollow body that is open on one side or even the formation of bulges in the surface of the flat-shaped workpiece by a punch pressing the workpiece into a corresponding die.
  • Deep-drawing in the latter form is used, for example, in the production of steps or of tread elements and setting elements of escalators or of pallets of moving walkways.
  • a tread element forms the tread or footing for a user of the escalator or the moving walk and a setting element forms the visible end of the step in the inclined part of the escalator.
  • the formation of a web / groove profile is achieved in the said elements, which is stiffer and narrow despite its low weight, as it can be achieved by embossing or printing or rolling process.
  • the web profile or groove profile is provided with a plurality, from about 88 to about 112, of webs and grooves in an escalator step or pavement pallet to ensure a better level of the user and allow liquids, especially water, to run off.
  • the preferred narrow web / groove profile is achieved by a thermoforming plate with projections, for example in the form of teeth, prongs or teeth, out and relatively or comparatively and / or cooperatively and / or compatible against a Tool with recesses, for example in the form of grooves, is moved.
  • a thermoforming plate with projections for example in the form of teeth, prongs or teeth, out and relatively or comparatively and / or cooperatively and / or compatible against a Tool with recesses, for example in the form of grooves, is moved.
  • Comparative means that both the tool can be pressed against a fixed thermoforming plate, as well as a movable thermoforming plate against a stationary tool.
  • the tool may have the projections and the thermoforming plate recesses and thus vice versa be equipped.
  • Basic is only that projections are pressed into corresponding, complementary recesses.
  • JP-A-62270224 discloses a pressing device in which the steel sheet is pressed onto a single ridge tool or embossing tool and so each ridge is formed individually one after the other. The corresponding movements are implemented by the interaction of inclined surfaces.
  • EP 0 960 664 A1 is a deep-drawing device is known, which is constructed so that in each case several ribs are deep-drawn simultaneously in a sheet by a plurality of juxtaposed stamp.
  • the corresponding stroke of the deep-drawing device causes a first group of eg two ribs to be deep-drawn in a first partial stroke.
  • a second group of eg two ribs is then deep-drawn.
  • thermoforming device or process steps which allows simultaneous production of several, preferably all desirable webs and thus cheaper and faster than previously usual and in use.
  • the inventive solution of the problem lies in the combination of deep drawing with a previous adjustability and displaceability of the lamellar gaps of the tool from a receiving position to an end position for forming the web profile or groove profile.
  • the receiving position is designed so that a wavy shaped or profiled sheet or deep-drawn sheet with its troughs or Profile valleys in the open, the receiving position corresponding lamellar gaps recording takes place.
  • the subsequent adjustment of the tool from the receiving position to the end position means a closing of the lamellar gaps, which causes a folding of the sheet or deep-drawn sheet metal.
  • the tool according to the invention is in the final position, which holds the recesses corresponding to the projections for the actual deep-drawing process. This allows the simultaneous deep drawing of each groove or each web possible.
  • the sheet or the deep-drawn sheet which lies with its final tread side down in the thermoforming device, more material available. This in turn is a new multiple and closely spaced, simultaneously deep drawing possible.
  • the accuracy of the final product or workpiece is increased because the tolerances of each ridge as in the Scriptures JP-A-62270224 revealed, do not add up or sum up.
  • a preferred embodiment of a deep-drawing device essentially comprises a base plate, a deep-drawing plate, a counter-plate to the latter and a tool.
  • the three plates are equipped with a common guide.
  • the thermoforming plate and the counter plate enclose the tool with a workpiece lying thereon.
  • a second drive then presses in one Direction corresponding to a second axis, which corresponds to the common leadership of the plates, the deep-drawing plate against the counter-plate or vice versa.
  • the inventive deep-drawing device also has a further, first guide and a further, first drive.
  • This first drive is by means of the first guide able to compress the tool in a direction corresponding to a first, perpendicular to the second axis.
  • the latter compression results in a closing of recesses, which are arranged on the tool. This in turn makes it possible to fold the workpiece lying on the tool.
  • the drives can be realized for example hydraulically or electrically or via eccentric and the tool can for example consist of slats arranged slidably. These lamellae can in turn run in a separate guide and preferably have two different thicknesses in their respective cross-sectional profile. The lower of the two is oriented towards the deep-drawing plate.
  • This preferred embodiment of the slats causes the slats can be pressed against their greater strength with maximum pressure and thus the smaller strength automatically forms the recess.
  • This configuration has the consequence that a higher dimensional accuracy of the recesses is achieved by a higher bending strength of the slats during the stress of deep drawing.
  • the design or the shape of the slender lamella also prevents a jumping out or loosening of the workpiece from the processing surface or from the slender lamella.
  • the displacement movement of the slats is further preferably coupled with compression springs between the individual slats. That is, it should preferably only the Clash of the first and second sip trigger the movement of the second sipe, subsequently the third sipe, the fourth sipe and so on.
  • the incipient movement of the first lamella transfers to the next lamella.
  • the accordion effect or accordion effect or scissor lattice effect achieved thereby facilitates the folding of the workpiece or the sheet with little force or driving force. As a result, a staggered and successive closure of the recesses is achieved.
  • the opening and removal of the workpiece is smooth and smooth and smooth and easily possible or feasible.
  • compression springs are not arranged between adjacent lamellae, but a compression spring, for example, skips the adjacent lamella and presses only on the next or the next but one.
  • the springs can not be located between two adjacent slats for reasons of space.
  • thermoforming device with a tool with adjustable recesses provides that the recesses can not open beyond a predetermined, open receiving position for the workpiece.
  • a wire or a flexible cable is arranged, which connects or the individual slats.
  • This wire or cable allows one hand, the complete closure of the slats until they abut each other, and on the other hand no opening of the slats, which exceeds the length of the wire / cable sections connecting them.
  • a person skilled in the art is free to integrate other travel limitations, for example in the form of pawls, hooks or links, which achieve substantially the same effect.
  • the deep-drawing device according to the invention or the deep-drawing method according to the invention are in any case adaptable with regard to the dimensions of the projections in relation to the dimensions of the recesses, so that the specifications of the standards can be met in interaction with the exemplified materials.
  • This adaptability can for example be given by the fact that the thermoforming plate and the individual slats are interchangeable.
  • the inventive deep-drawing device works, for example, with corrugated preformed sheets.
  • Another advantage of the invention is the simplified removal of the workpiece.
  • the workpiece or the tread element or the setting element can be manually removed from the thermoforming device, easier and faster and is a manipulation by means of ejectors or forced air blower, picking up the workpiece and out of the recess and / or out of the slats.
  • the workpiece or the tread element or the setting element is gripped by a gripper or a robot arm or a sheet metal manipulator and removed from the thermoforming device.
  • the workpieces or tread elements or setting elements are stored and / or sizing and / or stacked and / or stacked and / or accumulated and / or accumulated and / or palletized.
  • a planar surface on which the wave projections can slide during folding is formed in that the deep-drawing projections in the deep-drawing plate can be lowered. This countersinking is preferably done so that the lower end face of the projections with the underside of the deep-drawing plate forms a flat surface.
  • the invention is equally applicable to parts of escalators and parts of moving walkways.
  • parts for steps and parts for pallets can be produced equally.
  • thermoforming device or further or advantageous variants of a deep-drawing process with a corresponding thermoforming device, form the subject of the dependent claims.
  • Fig. 1 schematically shows an inventive deep-drawing device 100.
  • a deep-drawing plate 110 with a bottom 113 are arranged on the projections 112, a counter-plate 130 and a base plate 140 are guided together in guides 122a to 122d.
  • guides 122a to 122d or along a deep-drawing axis A 2 , acts a drive not shown in detail with a driving force F 2 so that the deep-drawing plate 110 and the counter-plate 130 can be pressed relative to each other.
  • a tool 106 includes louvers 101, which in an open receiving position PA shown here Tool 106 slat gaps 102 and recesses 103 form.
  • lamellar gaps 102 are adjustable because a punch 120, driven by a further, second, not shown drive with a driving force F1 along a perpendicular to the deep-drawing axis A2 folding axis A1 acts so that the lamellae 101 along a Lateral guide 121 are movable.
  • Fig. 2 schematically shows the inventive thermoforming device 100 in a closed end position PE.
  • the fins 101 abut each other. This movement corresponds to a folding operation of a wavy preformed sheet, which was previously inserted between the tool 106 and the deep drawing plate 110.
  • Fig. 3 schematically shows the inventive thermoforming device 100 of the FIGS. 1 and 2 , wherein the counter-plate 130 is pressed against the deep-drawing plate 110. This movement corresponds to a thermoforming process according to Fig. 2 folded sheets.
  • a part of the tool 106 is shown in the open receiving position PA. It can be seen that the lamellae 101 form two different strengths and a cam 127 is arranged at the transition from the lesser to the greater magnitude. Springs 104 are arranged so that they are mounted in a bearing on a blade 101 and, through the adjacent blade, on the next blade. Furthermore, travel limits in the form of wire or cable elements 105 are shown, which are in the shown open receiving position PA of the tool 106 under tension and prevent further opening of the lamellar gaps 102.
  • the open receiving position PA shown further illustrates that the slat gaps 102 and the Recesses 103 form a width 107 whose center is in a certain position P1 to a stop 129 of the tool 106.
  • the deep-drawing plate 110 with the projections or teeth 112, wherein it can be seen that the teeth 112 do not correspond or coincidentally with the recesses 103.
  • a workpiece 10 in the form of a wavy preformed sheet lies with its wave troughs in the recesses 103, so that a subsequent closing of the slat gaps 102 according to the driving force F1, the sheet 10 folds.
  • an optional compressed air device 108 is indicated which presses the sheet 10 into the recesses 103.
  • Fig. 5 shows the part of the tool 106 Fig. 4 in the closed end position PE.
  • Fig. 5 is on the same sheet as Fig. 4 so that it can be seen that not only the original width 107 of the recess 103 has been reduced to a width 107 ', but also the position P1 has moved with respect to the stop 129 in a position P2. Furthermore, it can be seen that the lamellae 101 abut each other at their greater strength and thus the recesses 103 is formed only by the less developed thickness of the lamellae 101. The position of the recesses 103 now corresponds, in contrast to Fig. 4 , with teeth 112 for deep drawing. Furthermore, it is shown that the springs 104 are compressed and the wire or cable elements 105 are no longer under tension.
  • Fig. 6 shows exemplary inventive method steps 2 to 8 or the steps 2 to 8 of an exemplary and inventive processing cycle, starting from a wavy pre-formed sheet 10 according to paragraph 1 and to a deep-drawn sheet 10 "according to paragraph 9. Under the number 1 is the starting product wavy preformed sheet 10 with a plate thickness S shown.
  • Number 2 shows as a first step, the insertion of the sheet 10 in the thermoforming device 100, in such a way that the troughs come to lie on the opened recesses 103.
  • a directional plate 109 is inserted between the plate 10 and the teeth 112 of the deep-drawing plate 110 as an optional enhancement to the subsequent folding operation.
  • Numeral 3 shows as a next step a reduction of a distance D to a degree at which the wave bumps touch the straightening plate 109 and the straightening plate 109 in turn contacts the teeth 112 of the deep-drawing plate 110.
  • Number 5 shows the subsequent opening of the thermoforming device 100, whereupon the directional plate 109 is removed under number 6.
  • Paragraph 8 shows the demoulding and paragraph 9 as a final product a deep-drawn sheet 10 "with a reduced sheet thickness S ', a web height 123, a web width 124 of a web 111 and a groove 114 with a groove width 125.
  • the web 111 has in the sectional view shown Furthermore, the webs 111 have an angle "W" which is between 0 degrees and 17 degrees of inclination, preferably 2 degrees to 11 degrees
  • the beads 128 along the top of the webs 111 are held at small intervals and thereby significantly improve the skid resistance of the users of the tread elements and setting elements.
  • Simultaneous production of the webs 111, including the modification with the beads 128 in one operation improves the manufacturing advantage and saves valuable production times and brings additional productivity. Moreover, the productive work is increased since all the webs 111 are produced and made out at the same time and at the same time. As a result, the production time and manufacturing time of the tread elements and setting elements is accelerated and accelerated. An improvement of the manufacturing process is obvious and is continuous and continuous.
  • the deep-drawing device 100 works, for example, with corrugated preformed sheet metal 10.
  • This can be, for example, a sheet metal panel of about 3200 mm width that has been corrugated so that it only has a width of about 2000 mm.
  • the thus-shaped wave troughs are received and folded by the edges of the recesses 103 on the tool 106.
  • a further embodiment of a deep-drawing device 100 provides that smooth, non-preformed metal sheet 10 can also be used.
  • a smooth sheet 10 is placed on the tool 106, the recesses 103 are in the open receiving position.
  • the deep-drawing plate 110 in turn, in addition to the protrusions 112 for deep drawing retractable stamp elements (not shown), which are responsible for the waves. These stamp members are arranged so as to correspond to the center of the pickup position.
  • the deep-drawing device 100 ie the deep-drawing plate 110 and the counter-plate 130 are then closed, so that the stamping elements pre-deepen the deep-drawn sheet 10 into the open recesses 103, about 2 mm to 5 mm, and thus form wavy.
  • the stamp elements can also be designed so that they only pierce the deep-drawing plate 110 and are not connected to it. In any case, this embodiment provides that the retractable stamp elements are withdrawn after the corrugations of the sheet 10, so that protrude from the deep-drawing plate 110 only the projections for the subsequent subsequent deep-drawing.
  • a second drive with which the sheet 10 is deep-drawn presses, for example, with a pressure between about 200 tons and about 700 tons, preferably about 300 tons.
  • a first drive which folds the sheet 10, compresses the tool 106 and the blades 101 of the tool 106, for example, with a pressure of between about 0.2 tons and about 2.5 tons, preferably about 0.5 tons to 1 ton.
  • the deep-drawing projections preferably have a cross-sectional profile that tapers or widened toward the surface of the deep-drawing plate 110. This may prevent the thermoforming process jamming of the sheet 10 in the recesses 103 of the tool 106. This type of shape also helps in folding the corrugated sheet 10 to hold this in position.
  • the deep drawing plate 110 and the tool 106 are preferably made of a hardened material configured by laser hardening or plasma hardening or induction hardening or coating hardening to ensure consistently precise grooves and ridges even after many machining processes.
  • the edges of the recesses 103 of the tool 106 must remain hard or sharp as long as possible in order to guarantee a secure footing on the webs of the workpiece.
  • An embodiment variant of a deep-drawing device 100 according to the invention provides projections for deep-drawing, the cross-sectional profile of which widens towards the surface of the deep-drawing plate 110. This thus results in deep drawing in the Workpiece 20 depressions or webs, which have a trapezoidal cross-section.
  • a further preferred embodiment of a deep-drawing device 100 has a positive surface profile on the lower side of the deep-drawing plate 110, that is to say between the deep-drawn projections. This presses on reaching the maximum stroke of the deep drawing movement for improved slip resistance of the tread webs some beads or notches in the top of the web. If the sheet 10 is inserted into the thermoforming device 100 so that its final tread is down, so the bottoms of the recesses 103 in the tool 106 corresponding positive surface profiles - for example cams - have. These cams are preferably located at a distance of about 1 to 3 mm above the depth of the deep drawing plate bottom or over the depth of the recess bottoms.
  • thermoforming device 100 An inventive method for deep drawing with previous folding of the corrugated preformed sheet 10 with a described thermoforming device 100 provides an additional process step, which facilitates the folding process.
  • the thermoforming device 100 is closed so far after placing the sheet 10 that at least one wave elevation of the sheet 10 abuts at least one thermoforming projection of the deep-drawing plate 110. This ensures that the wavy preformed sheet 10 is not pushed out of the recesses 103 by the closing of the recesses 103 during folding.
  • the first three to five fins are closed faster and / or more powerful, thus ensuring a tackling or grabbing or access or retention of the workpiece.
  • the workpiece is prevented from being stopped or pushed out by this operation.
  • an optional compressed air device which sucks through holes in the counter plate, the sheet 10 or through holes in the thermoforming plate 110, the sheet 10 blows.
  • inventive optimization of the folding process can optionally be met with a straightening plate, which is introduced, for example, simultaneously with the introduction of wavy preformed sheet 10 between the wave projections of the sheet 10 and the thermoforming projections of the deep drawing 110.
  • the thermoforming device 100 is again closed only until the abutment of the wave projections on the underside of the straightening plate or the abutment of the top of the straightening plate to the deep-drawing projections of the deep-drawing 110.
  • the elevations forming during the subsequent folding process thus slide along the underside of the straightening plate and thereby prevent the sheet 10 from becoming caught in the thermoforming device 100.
  • a deep-drawing plate 110 is used here, which has a first arrangement of projections 112 and stamping elements which can be countersunk in the deep-drawing plate 110.
  • this first arrangement of the projections 112 and the stamp elements are sunk into the deep-drawing plate 110.
  • the flat sheet 10 is inserted between the tool 106 and the deep drawing plate 110.
  • the stamp elements are adjusted so that the flat sheet 10 is formed wavy.
  • the stamp elements are now sunk and it is the distance D between the tool 106 and the deep-drawing plate 110 is reduced so that the wavy shaped sheet 10 rests against a bottom 113 of the deep-drawing 110.
  • the wavy shaped sheet 10 is folded further.
  • the first arrangement of the projections 112 is adjusted, so that the folded sheet 10 is deep-drawn by penetration of the projections 112 of the deep-drawing plate 110 in the end position PE of the recesses 103 of the tool 106.
  • tread elements or setting elements which for example consist of the following individual work cycles: inserting or clamping the workpiece about 0.5 seconds, Folding for about 2 seconds, deep drawing for about 1 second and demoulding (opening, removing workpiece) for about 2 seconds.
  • the deep-drawing device 100 and the method possible with it are, as already mentioned, very well suited for the production of tread elements and setting elements of escalator steps.
  • These elements are made of relatively thin and lightweight sheet metal, which despite its nature and despite or because of the deep drawing must meet the requirements and stress tests of the European standard EN 115 and the American standard ASME A17.1-2004.
  • the stage must withstand a static and a dynamic test. In the static test, the step becomes centered with a force of 3000 N acting perpendicular to the tread element loaded, with a maximum deflection of 4 mm may occur. After the force has been applied, the step must not show any permanent deformation.
  • the stage is loaded centrally with a pulsating force, the force varies between 500 and 3000 N with a frequency of 5 to 20 Hz and lasts at least 5 x 10 6 cycles.
  • the step may have a permanent deformation of not more than 4 mm.
  • sheet-formed is used to describe both pre-corrugated and flat sheet metal. This can be very generally sheets 10, be it heatsinks or sheets for the production of radiators or facade elements, solar panels, steel stairs, scaffolding or stage elements.
  • These steel grades are based essentially on the strength-increasing effect of microalloying additives such as niobium and / or titanium and / or manganese and / or nickel.
  • microalloying additives such as niobium and / or titanium and / or manganese and / or nickel.
  • all commercially available deep-drawn sheets are suitable, but also microalloyed steel sheets or sheets made of stainless steel, copper, aluminum and alloys thereof.
  • the ratio of the sheet thickness (0.25 mm to 0.75 mm) to the deep drawing height is preferably in the ratio 18 to 39.
  • the sheet thickness, but also the dimensions of the sheet metal panel are on the one hand chosen so that they meet the standards. On the other hand, however, so that the deformation by folding and deep drawing directly results in a stepping or setting element with the desired dimensions.
  • the ridge width is, for example, between about 2.5 mm and about 5 mm, preferably about 2.6 mm and the groove width between about 5 mm and about 7 mm, preferably about 6.4 mm.
  • the tool 106 (adjustable) recesses 103 and the deep drawing plate 110 have projections.
  • the reverse, namely projections on the tool 106 and the (adjustable) recesses on the deep-drawing plate 110, can also be realized, in which case, however, a guide for an adjustability of the recesses must be provided for the deep-drawing plate 110.
  • the webs preferably have an angle "W" between the 0 degrees and 17 degrees inclination, preferably 2 degrees to 11 degrees.
  • the inventive deep-drawing device 100 thus enables a method according to the invention, in which the workpiece 10 is inserted or clamped, then folded by the closing of the recesses 103 and only then deep-drawn.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP08804209.8A 2007-10-01 2008-09-15 Tiefziehvorrichtung Not-in-force EP2205373B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08804209.8A EP2205373B1 (de) 2007-10-01 2008-09-15 Tiefziehvorrichtung

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP07117651 2007-10-01
EP07117648 2007-10-01
EP07117647 2007-10-01
EP08804209.8A EP2205373B1 (de) 2007-10-01 2008-09-15 Tiefziehvorrichtung
PCT/EP2008/062249 WO2009047088A2 (de) 2007-10-01 2008-09-15 Tiefziehvorrichtung

Publications (2)

Publication Number Publication Date
EP2205373A2 EP2205373A2 (de) 2010-07-14
EP2205373B1 true EP2205373B1 (de) 2019-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08804209.8A Not-in-force EP2205373B1 (de) 2007-10-01 2008-09-15 Tiefziehvorrichtung

Country Status (10)

Country Link
US (1) US8915113B2 (zh)
EP (1) EP2205373B1 (zh)
KR (1) KR101545364B1 (zh)
CN (1) CN101970146B (zh)
BR (1) BRPI0818695A2 (zh)
CA (1) CA2699318C (zh)
ES (1) ES2726759T3 (zh)
MX (1) MX2010003345A (zh)
RU (1) RU2476285C2 (zh)
WO (1) WO2009047088A2 (zh)

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Publication number Publication date
RU2476285C2 (ru) 2013-02-27
CA2699318C (en) 2016-06-28
CN101970146B (zh) 2013-03-20
MX2010003345A (es) 2010-04-09
KR20100075971A (ko) 2010-07-05
US8915113B2 (en) 2014-12-23
US20100218442A1 (en) 2010-09-02
CA2699318A1 (en) 2009-04-16
KR101545364B1 (ko) 2015-08-18
RU2010117207A (ru) 2011-11-10
BRPI0818695A2 (pt) 2015-09-01
EP2205373A2 (de) 2010-07-14
ES2726759T3 (es) 2019-10-09
CN101970146A (zh) 2011-02-09
WO2009047088A3 (de) 2009-09-24
WO2009047088A2 (de) 2009-04-16

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