CN102051754B - Air control system for inserting a weft yarn in a pneumatic weaving loom - Google Patents
Air control system for inserting a weft yarn in a pneumatic weaving loom Download PDFInfo
- Publication number
- CN102051754B CN102051754B CN201010536938.7A CN201010536938A CN102051754B CN 102051754 B CN102051754 B CN 102051754B CN 201010536938 A CN201010536938 A CN 201010536938A CN 102051754 B CN102051754 B CN 102051754B
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- open valve
- close
- air supply
- supply system
- pressure
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- 238000009941 weaving Methods 0.000 title abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 description 4
- 210000000635 valve cell Anatomy 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3026—Air supply systems
- D03D47/3053—Arrangements or lay out of air supply systems
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3026—Air supply systems
- D03D47/306—Construction or details of parts, e.g. valves, ducts
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
An air supply system to launch (10, 11) or relay (6) nozzle means for a weft yarn in a pneumatic weaving loom is disclosed. The system comprises at least one outlet on/off valve (V 1 ) controlling said nozzle means and further only another inlet on/off valve means (V 2 ) on the air supply conduit pertaining to said nozzle means upstream of said outlet on/off valve (V 1 ); between said two outlet valve (V 1 ) and inlet valve means (V 2 ) there is arranged a storage tank (Tk), of a volume suited to contain sufficient air for at least one weft yarn launch, and a pressure sensor (P) apt to drive said inlet valve means (V 2 ) so as to open when the pressure in the tank (Tk) drops below a preset minimum threshold (Psl) and to close when the pressure in the tank (Tk) rises above a preset maximum threshold (Psu).
Description
Technical field
The present invention relates to for weft yarn being inserted into the improved air control system for air of air/pneumatic loom.
Background technology
As is known, the air-spray penetrating by the ozzle from suitable due to weft yarn is inserted in the fact warp thread shed open, and the loom of air loom and other type differentiates.Typically, for the compressed-air actuated pneumatic circuit from jet ozzle, also for the entrance of access to plant and the ozzle for arranging along warp thread shed open, and its forms air-spray relaying ozzle to guide better weft yarn.
The weft yarns of every type different at aspects such as color, counting, textures import (launch) by corresponding specific ozzle.If some fabric provides the insertion of the dissimilar weft yarn of N kind, therefore loom is provided with N and imports ozzle.The type that depends on the weft yarn that will insert, advantageously, is regulated accordingly from the pressure of the air-spray of corresponding importing ozzle, so as to realize use the least possible compressed-air actuated effectively, import rapidly.
Meanwhile, between a weft yarn importing and the importing of another weft yarn, must be able to change the pressure of this ozzle to allow to adapt to time dependent situation, for example, due to ambient humidity or pre-change (when weft yarn spool is finished) of supplying.
The adjusting that prior art provides different structure and method of operating to realize ozzle pressure.
For example, in US6062273, it is taught on the compressed air line between pressure source and ozzle pressure sensor is provided, to have feedback signal, by this feedback signal, air supply is controlled under optimum pressure, so that specific yarn imports.
EP1260622 discloses a kind of system that is similar to the structure of just now enumerating, and wherein pressure regulator is for maintaining and wish stress level being arranged in the lung (lung) of next-door neighbour upstream of valve of the ON/OFF type of controlling each ozzle or compensated chamber.Similarly, represent that the document EP189919 of nearest prior art and EP0279222 disclose the like configurations for air-pressure controlling, yet, in this structure, be each nozzle set compensated chamber.Particularly, after this, in several pieces of documents, instructed the detecting sensor that the unwinding of the weft yarn that leaves spool speed is provided, to can provide self-regulation parameter for pressure.
Yet because the pressure-regulating valve of upstream, compensated chamber is expensive without doubt, mainly, from the viewpoint of cost, such structure is not entirely satisfactory.In order to keep continuously good pressure to regulate by choke/choke valve, be also necessary to make to control precision and the resolution ratio that sensor has had, and this is definitely expensive.
In addition, have been found that the abundant constant pressure at expulsion that is difficult to keep as you wish ozzle place.Due to the motion of the choke valve (choke valve) of the opening/closing of ozzle and the pressure regulator of upstream, compensated chamber, the pressure oscillation infringement yarn qualities of supply air and produce misplug, causes the defect in fabric.
In addition, must be pointed out, imagine single compensated chamber and there is the not satisfied reaction time for the scheme of all ozzles.In fact, because single compensated chamber is arranged to enough large to can supply all ozzles, therefore it can not efficiently tackle significant abrupt pressure variation (for example, being greater than 4ata), thereby can not supply fully according to the only ventilation valve that is arranged in compensated chamber the ozzle of various yarn.
For example, if yarn A needs the importing pressure of 6ata and the pressure that yarn B needs 2ata, the supply of yarn A and subsequently yarn B sequentially comprise the compensated chamber that discharges by ventilation valve completely-abrupt pressure of 4ata changes.
Therefore, the supply system that the object of this invention is to provide a kind of importing and relaying ozzle, this supply system overcomes aforesaid drawbacks, allows to obtain the control of supply pressure and the adjusting of improvement, so that cost that can be low with the system than providing at present obtains more constant importing pressure.
Summary of the invention
According to a first aspect of the invention, for the ingress pipe mouth device for weft yarn in pneumatic loom or relay pipe mouth device provide a kind of air supply system, this air supply system comprises at least one outlet close/open valve of controlling described ozzle device, also comprise only another entrance close/open valve device on the air feed line relevant to the described ozzle device of the upstream of described outlet close/open valve, and wherein between described outlet valve and inlet valve device, be provided with the storage box that is suitable for comprising the volume that is enough to make the air that at least one weft yarn imports, and pressure sensor, this pressure sensor is suitable for driving described inlet valve device, pressure drop in case is opened when lower than default minimum threshold and the pressure when case in is elevated to be greater than while presetting max-thresholds and closes.
According to a preferred aspect of the present invention, described pressure sensor is arranged to for reading the pressure in described storage box.
According to other aspect, described pressure sensor is arranged to for detection of the pressure in the air fill port that leaves case position far away as far as possible.
Additional aspects of the present invention are that ventilation unit is also set between inlet valve device and outlet valve.
According in addition preferred aspect of the present invention, inlet valve device comprises having at least two close/open valve unit that the default minimum of corresponding difference is opened threshold value.
Accompanying drawing explanation
In any case, according to the following detailed description of the preferred embodiments more of the present invention that provide and illustrate in the mode of example in the accompanying drawings, according to the other feature and advantage of system of the present invention, will be more obvious, wherein:
Fig. 1 is the diagram perspective drawing of prior art loom, and the position of ozzle and relaying ozzle is shown;
Fig. 2-4th, be applied to weft yarn import ozzle according to the diagrammatic view of the layout of three of system of the present invention different embodiment;
Fig. 5-7th, be applied to weft yarn import ozzle according to the diagrammatic view of the layout of other embodiment of system of the present invention; And
Fig. 8-9th, be applied to relaying ozzle according to the diagrammatic view of the layout of other embodiment of system of the present invention.
The specific embodiment
Fig. 1 diagrammatically illustrates the pneumatic loom of prior art.As people can find, it is by Reference numeral 10 and the 11 front ozzles of indicating, (a relaying ozzle to be only shown with importing ozzle (yarn imports warp thread shed open by it) and relaying ozzle respectively substantially that compressed air is supplied to it to drive the device of the importing of weft yarn, by Reference numeral 6, represented), yarn is supported and be pulled in warp thread shed open until it reaches the end relative with entrance side by this relaying ozzle.
Other device shown in Fig. 1 and pipeline are used for regulating and distributing the compressed air (being illustrated by the arrow that is connected to entrance 2) from the compressed air source of loom.
Particularly, as shown in Figure 2, each ozzle 11 is connected in a manner known way the supply line of compressed air M-specifically for this single ozzle or ozzle group-it is therefrom by near the ON/OFF outlet valve V that is arranged in the entry port of ozzle device
1separated.And pipeline M is connected to total compressed air distribution ducts of loom.Valve V
1at each, import circulation with the order of magnitude (the order) (therefore with sizable frequency) the opening and closing ozzle entrance of loom speed, put into and interrupt compressed air stream (in general, if loom is with the frequencies operations of 800 strokes per minute and have two and import ozzle, on average each valve V
1must be with the frequencies operations of about 800/4/60=6.6Hz).
According to the present invention, at feeding mechanism M and valve V
1between also arrange air storage tank T
k, and this air storage tank is by the second ON/OFF inlet valve device V
2m is separated with feeding mechanism.According to essential feature of the present invention, case T
kthere is at least one that be suitable for comprising from a weft yarn of ozzle 11 and import the volume of required air capacity.For example, the operating pressure operation that this case has the volume of 0.8-1.2lt and typically clings to about 2-6.
Because the volume of case during transition stage and working law are (that is, when by close/open valve V
1or V
2in both one while forming air stream), case T
kbe preferably cylindrical shape and elongated, there is particularly the depth-width ratio that is greater than 10.
This system is also passed through pressure sensor P and perfect, and this pressure sensor is suitable for providing control the second ON/OFF inlet valve device V
2conditioning signal.
Pressure sensor P is arranged in close/open valve V
1and V
2in any one position between the two, between these two valves, loop has in theory identical pressure under static conditions.Sensor P therefore can be for example also just at the first ON/OFF outlet valve V
1upstream (Fig. 4).
Have been found that best adjusting behavior preferably in the situation that setting pressure sensor P obtains (Fig. 2 and 3) to read pressure in case TK.
(Fig. 2) according to a preferred embodiment of the invention, sensor P is arranged in the bottom of case TK, is arranged in the opposed end being provided with for the end of compressed-air actuated entrance and fill port.In fact, in these situations, have been found that this sensor is not too responsive to the pressure wave propagating during transition stage in case, and therefore it provides and is more suitable for obtaining the signal that there is no instable effective adjusting.
As shown in Figure 2, case T
kpreferably have single load/unload and fill/discharge port, T connector for joint is arranged on this port, and this T connector for joint is connected to inlet valve device V by loop
2with the outlet valve device V to ozzle 11
1.Alternatively, two of case fill and discharge port is different, but still is arranged on the same bottom of case.
Fig. 3 illustrates alternate embodiment, wherein fills and discharges port and be positioned at case T
ktwo relative ends.In this case, in order to regulate regularity, pressure sensor P is preferably arranged to read approximately by case T
kthe case T of centre of extension
kinterior pressure.
Operatively, this System Construction becomes to work as follows.Open ON/OFF inlet valve V
2and with compressed air filling box T
k, until it reaches the upward pressure threshold value Psu being detected by sensor P.In this point, valve V
2close and the importing of system preparation parallel.At definite moment of loom control logic, outlet valve V
1open and case TK in available compressed air for carrying out parallels by ozzle 11, import.As outlet valve V
1while again closing, if probe P detects case T
kinterior pressure has dropped to lower than lower threshold value Ps1, reopens inlet valve V
2, this realizes case T
krecharge.Typically, due to case T
kbe designed to appropriate size to there is the volume that is enough at least one importing, case T
kfilling and relative pressure fluctuation occur in one import and next importing between transition stage in.
By the control logic of loom, the concrete yarn based on being imported into from ozzle limits described two threshold pressures; These threshold values also can change during operation when changing profile condition, for example, and the weaving condition based on temperature and humidity.
As conceive, said system also has intrinsic downward pressure regulating power, because identical ozzle serves as ventilation valve with by air sucking-off loop and reduce outlet/inlet valve V
1and V
2pressure between the two.Obtain if necessary larger regulating power, specific ventilation valve V also can be provided
3, this ventilation valve V
3be arranged in inlet valve device V
2with outlet valve V
1between the two.Ventilation valve V
3can be arranged in different embodiment, as shown in Fig. 5-7.Preferably, as shown, ventilation valve V
3be arranged in case T
kthe upstream of fill port.
Fig. 8-9 illustrate the embodiment of the system that is applied to relaying ozzle.In Fig. 8, be also provided with ventilation valve V
3.
In this specific embodiment, case T
kbe designed to suitable dimension to can supply air to all relaying ozzles that import for whole parallel.Because the pressure that relaying ozzle is required is substantially the same, so single case T
kcan supply all relaying ozzles simultaneously.In specific situation, advantageously, sequenced two (or more) relayings ozzle casees are provided, and (one for relaying ozzle group 1 ... n and one are for relaying ozzle group n+1 ... m), from the viewpoint of operation and Pressure filling, these two repeater boxs are identical.
In order to control relaying ozzle 6 in different time, in weft yarn support shute fully during through warp thread shed open, provide a plurality of outlet valve V
1a-V
1n, this outlet valve is for each relaying ozzle or ozzle group.
According to other embodiment, because needs have more air streams or the fastest pressure decline, described inlet valve device V
2comprise more than one inlet valve unit.In this layout, typically when the operation of a large amount of relaying ozzles, for providing level and smooth pressure to regulate and reducing main valve commutation, preferably, when different, open and close together two valves, but be that two valves arrange two slightly different threshold values (that is, the difference of 0.1 bar) of opening.In this case, can regulate the operation of two valve cells.If for example, the pressure in case reduces, the first valve cell is opened: under low air consumption condition, this is enough, and under stable condition, only opens and closes the first valve cell; If air consumption is larger, it is much higher and also will start second valve unit that pressure reduces gradient: under this condition, can cause the first valve cell to keep opening continuously, and second valve unit commutates according to pressure.
As the description from above can show, the scheme proposing here allows to realize the target of wishing.
Particularly, in the situation that case is arranged in ON/OFF entrance and exit valve between the two and uses single pressure sensor, the constant pressure that can obtain hope regulates and in ozzle porch, does not use expensive pressure regulator.In essence, during the lead-in stage of weft yarn, it is fully constant that the pressure in ozzle 11 keeps, although the expensive flap valve that even allows air stream between the introduction period is not set.
Due to case T
kthere is the fact that is suitable for supporting the volume that at least one weft yarn imports, so sensor P can be with low precision and resolution operation, for example, be separated from each other between two threshold value Psu and Ps1 of 0.1 bar: this advantageously affects the economy of sensor.
Yet, be to be understood that, the special structure that the invention is not restricted to illustrate above, these special structures only represent the non-limitative example of scope of the present invention, but many modification are possible, all those skilled in the art in one's power in scope, and do not depart from as scope of the present invention defined in the appended claims.
Claims (9)
- In pneumatic loom for an air supply system for the ozzle device of weft yarn, described ozzle device is ingress pipe mouth device or relay pipe mouth device, described air supply system comprises storage box (T k), pressure sensor (P) and control at least one outlet close/open valve (V of described ozzle device 1), it is characterized in that,This air supply system also comprises an only entrance close/open valve device (V 2), this entrance close/open valve device (V 2) at described outlet close/open valve (V 1) upstream, be positioned on the air feed line relevant to described ozzle device, andAt described outlet close/open valve (V 1) and entrance close/open valve device (V 2) be furnished with described storage box (T between the two k) and described pressure sensor (P), described storage box (T k) volume be suitable for comprising the air that is enough to make at least one weft yarn to import, this pressure sensor is suitable for driving described entrance close/open valve device (V 2), make as storage box (T k) in pressure drop open when lower than default minimum threshold (Ps1), and as storage box (T k) in pressure be elevated to while being greater than default max-thresholds (Psu) and close, described storage box (T k) be columnar and elongated, there is the depth-width ratio that is greater than 10.
- 2. air supply system as described in claim 1, wherein, described pressure sensor (P) is arranged to read described storage box (T k) interior pressure.
- 3. air supply system as described in claim 2, wherein, described pressure sensor (P) is arranged to detect apart from storage box (T k) air fill port position far away as far as possible in pressure.
- 4. air supply system as described in claim 1, wherein, described storage box (T k) in same end, there is fill port and discharge port.
- 5. the air supply system as described in any one in aforementioned claim, wherein, at described entrance close/open valve device (V 2) and described outlet close/open valve (V 1) between be also provided with ventilation unit (V 3).
- 6. air supply system as described in claim 5, wherein, described ventilation unit (V 3) be arranged in described storage box (T k) upstream.
- 7. the air supply system as described in any one in claim 1-4, wherein, described entrance close/open valve device (V 2) comprise thering are at least two close/open valve unit that corresponding difference is preset minimum threshold (Ps1).
- 8. described air supply system as claimed in claim 5, wherein, described entrance close/open valve device (V 2) comprise thering are at least two close/open valve unit that corresponding difference is preset minimum threshold (Ps1).
- 9. described air supply system as claimed in claim 6, wherein, described entrance close/open valve device (V 2) comprise thering are at least two close/open valve unit that corresponding difference is preset minimum threshold (Ps1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09425450A EP2319968B1 (en) | 2009-11-09 | 2009-11-09 | Air control system for inserting a weft yarn in a pneumatic weaving loom |
| EP09425450.5 | 2009-11-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102051754A CN102051754A (en) | 2011-05-11 |
| CN102051754B true CN102051754B (en) | 2014-07-23 |
Family
ID=41722985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010536938.7A Active CN102051754B (en) | 2009-11-09 | 2010-11-09 | Air control system for inserting a weft yarn in a pneumatic weaving loom |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2319968B1 (en) |
| CN (1) | CN102051754B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5866804B2 (en) * | 2011-05-31 | 2016-02-24 | 株式会社豊田自動織機 | Air supply system for air jet loom |
| EP2721206B1 (en) * | 2011-06-15 | 2016-08-03 | Picanol | Air supply system for an airjet weaving machine |
| JP6119557B2 (en) * | 2013-10-29 | 2017-04-26 | 株式会社豊田自動織機 | Compressed air pressure control device for air jet loom |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534387A (en) * | 1982-01-18 | 1985-08-13 | Ruti-Te Strake B.V. | Method and apparatus for inserting different weft threads having different properties into the warp shed of a jet weaving machine |
| EP0189919A1 (en) * | 1985-01-30 | 1986-08-06 | Vilminore Officine Meccaniche S.P.A. | Device for the automatic control of the weft yarn feed in air looms |
| CN1605669A (en) * | 2003-10-08 | 2005-04-13 | 株式会社丰田自动织机 | Filling insertion controlling device of jet loom |
| CN1876920A (en) * | 2005-06-09 | 2006-12-13 | Smit私人股份公司 | Air feeding and control device for the pneumatic transporting of the weft in air-jet weaving machines |
| CN2869054Y (en) * | 2005-12-31 | 2007-02-14 | 江苏万工科技集团有限公司 | High-pressure air flow conveying device of air jet loom |
| CN1932106A (en) * | 2006-06-15 | 2007-03-21 | 江苏万工科技集团有限公司 | Pneumatic-electric control device of weft insertion groove airflow detector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1201202B (en) | 1987-01-26 | 1989-01-27 | Omv Off Mecc Vilminore | SELF-REGULATING DEVICE FOR FEEDING WEFT YARNS IN AIR WEAVING FRAMES |
| BE1010015A3 (en) | 1996-02-09 | 1997-11-04 | Picanol Nv | Apparatus for supplying compressed air to a main blower of a weaving machine. |
| DE10124290C1 (en) | 2001-05-17 | 2003-01-23 | Dornier Gmbh Lindauer | Jet weaving machine, in particular air jet weaving machine with a weft insertion system |
| EP2037024B1 (en) * | 2007-09-12 | 2010-08-25 | ITEMA (Switzerland) Ltd. | Method for regulating the pressure in a loom and loom with a pressure regulation system |
-
2009
- 2009-11-09 EP EP09425450A patent/EP2319968B1/en active Active
-
2010
- 2010-11-09 CN CN201010536938.7A patent/CN102051754B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534387A (en) * | 1982-01-18 | 1985-08-13 | Ruti-Te Strake B.V. | Method and apparatus for inserting different weft threads having different properties into the warp shed of a jet weaving machine |
| EP0189919A1 (en) * | 1985-01-30 | 1986-08-06 | Vilminore Officine Meccaniche S.P.A. | Device for the automatic control of the weft yarn feed in air looms |
| CN1605669A (en) * | 2003-10-08 | 2005-04-13 | 株式会社丰田自动织机 | Filling insertion controlling device of jet loom |
| CN1876920A (en) * | 2005-06-09 | 2006-12-13 | Smit私人股份公司 | Air feeding and control device for the pneumatic transporting of the weft in air-jet weaving machines |
| CN2869054Y (en) * | 2005-12-31 | 2007-02-14 | 江苏万工科技集团有限公司 | High-pressure air flow conveying device of air jet loom |
| CN1932106A (en) * | 2006-06-15 | 2007-03-21 | 江苏万工科技集团有限公司 | Pneumatic-electric control device of weft insertion groove airflow detector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102051754A (en) | 2011-05-11 |
| EP2319968B1 (en) | 2013-01-02 |
| EP2319968A1 (en) | 2011-05-11 |
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