CA2663645C - Full-cut heading machine - Google Patents
Full-cut heading machine Download PDFInfo
- Publication number
- CA2663645C CA2663645C CA2663645A CA2663645A CA2663645C CA 2663645 C CA2663645 C CA 2663645C CA 2663645 A CA2663645 A CA 2663645A CA 2663645 A CA2663645 A CA 2663645A CA 2663645 C CA2663645 C CA 2663645C
- Authority
- CA
- Canada
- Prior art keywords
- full
- heading machine
- rollers
- drill head
- floor
- 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 - Fee Related
Links
- 238000000605 extraction Methods 0.000 claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 12
- 230000004323 axial length Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
- E21D9/112—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads
- E21D9/113—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads having a central part for making a pilot tunnel and a follow-up part for enlarging the pilot tunnel
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
In a full-cut heading machine including a drill head for hard rock, which is rotationally mounted about an axis of rotation extending in the driving direction, as well as downstream extraction tools for producing a floor widened in the floor region, the downstream extraction tools are arranged on the shells, and optionally end faces, of rollers rotationally mounted transversely to the axis of rotation of the drill head.
Description
Full-Cut Heading Machine The invention relates to a full-cut heading machine including a drill head for hard rock, which is rotationally mounted about an axis of rotation extending in the driving direction, as well as downstream extraction tools for producing a floor widened in the floor region.
Heading machines are known in various configurations. From DE-AS 1260412, a configuration has become known, in which additional tools are arranged at a distance from the longitudinal axis of the machine in the lower region of the heading machine behind the drill head, viewed in the driving direction, which are able to work off the material left behind by the drill head. In that known configuration, the axes of the additional drilling tools are oriented parallelly to the longitudinal axis of the machine, and a bucket chain conveyor is provided behind the two extraction tools to receive the material. In the event of hard rock, suitably adapted extraction tools are, however, required, thus rendering the beginning of extraction relatively difficult in the direction to the mine face on account of the direction of rotation of the additional tools, whereby the widening of the floor is accordingly limited.
In DE 3121244 Al, a number of drill heads equipped with roller bits are provided behind the supporting device of a full-cut drill head, those additional drill heads being again rotationally mounted about rotational axes extending parallelly to the axis of the main drill head. In that configuration too, a substantial widening of the floor will only be feasible if the additional rotating cutter heads are accordingly pivotally mounted and become outwardly displaceable relative to the central axis of rotation, thus requiring relatively expensive driving means.
Additional laterally displaceable and pivotable extraction tools are described in DE 3421704 Al. In that previously known configuration, the downstream extraction tools are adjusted relative to the lateral wall and pivoted in the direction of the lateral widening of the floor. To this end, a supporting structure is provided, which defines a free space in the lower region, as in the case of a portal, wherein the disclosed device can be attached. directly behind a drill head such that a walling can be set in the gallery or in the drift, without requiring interim protection measures. The supporting structure, however, requires additional space within the gallery and may impede walling.
The invention now aims to provide a full-cut heading machine which, in particular, is especially suitable for mining in hard rock, and by which a circular gallery profile can initially be cut, whereupon an almost plane floor is to be obtained without reducing the overall driving performance. At the same time, the configuration is to be designed sufficiently compact to hinder as little as possible the driving of the track, and is to be designed to ensure a sufficiently high driving performance also by the downstream extraction tools in the event of material having a high cube compressive strength, and/or of hard rock.
To solve this object, the configuration according to the invention essentially consists in that the downstream extraction tools are arranged on the shells, and optionally end faces, of rollers rotationally mounted transversely to the axis of rotation of the drill head. Due to the fact that the downstream drill heads or extraction tools are arranged on the shells or end faces of rollers, disc tools can again be used, as with the central drill head, so as to enable the achievement of cutting performances adapted to the material to be extracted. In a particularly advantageous manner, the configuration is devised such that the extraction tools are designed as roller bits.
In order to ensure rapid walling and a high driving performance even with hard rock while, at the same time, achieving a largely plane floor, the configuration is advantageously devised such that, outside the vertical longitudinal central plane, two rollers are rotationally mounted, whose axial length is between 50 and 75%, preferably 60 to 70%, of the radius of the drill head, wherein the downstream roller bits are preferably mounted on the shells of the rollers with the axes of rotation extending substantially parallelly to the axes of rotation of the rollers. Such dimensioning of the rollers, and such an arrangement of the axis of rotation of the roller bits, allow the respective dimensions and distances to be selected with a view to achieving an accordingly optimized overall driving performance adapted to the cube compressive strength of the respective material to be excavated. In this respect, the configuration is advantageously devised such that the axial distances of the roller bits distributedly arranged on the shell are 75 to 100%
of the radial distances of the roller bits of the drill bit.
In this manner, the same cutting parameters as with the discs of the rotational main drill head can be maintained.
In a particularly advantageous manner, the material cut by the discs of the rollers can be taken up by clearing tools which become active themselves also in association with the rotationally mounted drill head. In order to enable such haulage, the configuration is advantageously devised such that the rollers are drivable for rotation from the floor upwardly to the mine face, wherein the drill head, and/or a carrier coupled with the drill head, preferably carry clearing tools, in particular chutes and/or shovels, for taking up excavated material, which are movable onto a haulage device via a discharge site. The clearing tools of the drill head may be comprised of rigid chutes fixed within the drill head.
Connected with the drill head may be a rotating carrier with folding shovels each throwing the received material onto the conveyor belt on a delivery or discharge site to a haulage device.
In order to prevent the floor from being dug off too deeply by the roller disc tools, and the entire heading machine from tilting as a whole relative to the mine face, a special type of floor support will be of particular advantage, to which end the configuration is advantageously devised such that a slide-like floor support extending from an end facing the mine beyond the projection of the axes of rotation of the rollers on the floor is arranged in the vertical longitudinal central plane of the heading machine. Such a slide-shaped or skid-shaped support in terms of contour may correspond with the outline shape of the rotationally mounted drill head and, therefore, rest stably on the floor via a relatively large surface area, the floor widening becoming effective outside the floor support slightly higher than the tangent to such a skid-shaped or slide-shaped floor support. The support extends beyond the axis of rotation of the roller in order to be able to also safely absorb reaction forces.
In one aspect, the invention provides a full-cut heading machine including a drill head for hard rock, which is rotationally mounted about an axis of rotation extending in - 4a -a driving direction, as well as downstream extraction tools for producing a floor widened in a floor region, wherein the downstream extraction tools are arranged on shells of rollers rotationally mounted transversely to the axis of rotation of the drill head and substantially parallel to a plane of a floor.
In the following, the invention will be explained in more detail by way of an exemplary embodiment schematically illustrated in the drawing. Therein, Fig. 1 is a front view of the full-cut heading machine according to the invention; Fig.
-2 is a view in the same direction on a section along line II-II of Fig. 3; and Fig. 3 depicts an axial section through the forward region of the heading machine according to the invention.
Fig. 1 depicts a drill head 1 for hard rock, which carries rotationally mounted extraction tools or disc tools 2. The discs are rotationally mounted about substantially radial axes. In the illustration according to Fig. 1, portions of the laterally cantilevering rollers 3 and 4 are respectively visible in the lower region, each again carrying extraction tools or disc tools 5. The disc tools 5 provided on the rollers 3, 4 serve to cut or excavate the floor widening.
From the illustration according to Fig. 2, the rollers 3 and 4 as well as the disc tools 5 arranged on these rollers are again visible. The distance a of adjacent disc tools on the shells of the rollers 3 and 4, respectively, in this case is chosen as a function of the radial distances of the discs 2 of the drill head 1 in order to optimize the cutting performance.
The axis of rotation of the drill head is denoted by 6 in Fig.
2, on which also the skid-shaped floor support 7 resting on the floor 8 is apparent. The machine is equipped with lateral supports 9 as well as a roof support 10, which can be pressed against the already cut road or tunnel profile. The pressing cylinders for the supports 9 are, for instance, denoted by 11.
From the illustration according to Fig. 3, discs 2 are again apparent, which are rotationally mounted on the drill head 1.
The drill head 1, moreover, carries shovel-like chutes 12, via which material is upwardly conveyed at a rotation of the drill head about the axis 6 and which enable the throwing off of cut material on an upwardly located delivery site to a haulage device 13. The axes of rotation of the rollers 3 and 4 are denoted by 14, the envelope cut by the rotating bits being indicated at 15.
A carrier 16 connected with the drill head 1 carries folding shovels 17, via which the material cut and taken up by the rollers rotating in the sense of arrow 18 is again conveyed towards a delivery point to the haulage means 13.
The floor support in the form of a skid 7 extends below the axis of rotation 14 of the roller 3 from a front end facing the mine face 19 to a rear end 20 located behind the projection of the axis 14, thus effectively counteracting tilting of the heading machine.
Heading machines are known in various configurations. From DE-AS 1260412, a configuration has become known, in which additional tools are arranged at a distance from the longitudinal axis of the machine in the lower region of the heading machine behind the drill head, viewed in the driving direction, which are able to work off the material left behind by the drill head. In that known configuration, the axes of the additional drilling tools are oriented parallelly to the longitudinal axis of the machine, and a bucket chain conveyor is provided behind the two extraction tools to receive the material. In the event of hard rock, suitably adapted extraction tools are, however, required, thus rendering the beginning of extraction relatively difficult in the direction to the mine face on account of the direction of rotation of the additional tools, whereby the widening of the floor is accordingly limited.
In DE 3121244 Al, a number of drill heads equipped with roller bits are provided behind the supporting device of a full-cut drill head, those additional drill heads being again rotationally mounted about rotational axes extending parallelly to the axis of the main drill head. In that configuration too, a substantial widening of the floor will only be feasible if the additional rotating cutter heads are accordingly pivotally mounted and become outwardly displaceable relative to the central axis of rotation, thus requiring relatively expensive driving means.
Additional laterally displaceable and pivotable extraction tools are described in DE 3421704 Al. In that previously known configuration, the downstream extraction tools are adjusted relative to the lateral wall and pivoted in the direction of the lateral widening of the floor. To this end, a supporting structure is provided, which defines a free space in the lower region, as in the case of a portal, wherein the disclosed device can be attached. directly behind a drill head such that a walling can be set in the gallery or in the drift, without requiring interim protection measures. The supporting structure, however, requires additional space within the gallery and may impede walling.
The invention now aims to provide a full-cut heading machine which, in particular, is especially suitable for mining in hard rock, and by which a circular gallery profile can initially be cut, whereupon an almost plane floor is to be obtained without reducing the overall driving performance. At the same time, the configuration is to be designed sufficiently compact to hinder as little as possible the driving of the track, and is to be designed to ensure a sufficiently high driving performance also by the downstream extraction tools in the event of material having a high cube compressive strength, and/or of hard rock.
To solve this object, the configuration according to the invention essentially consists in that the downstream extraction tools are arranged on the shells, and optionally end faces, of rollers rotationally mounted transversely to the axis of rotation of the drill head. Due to the fact that the downstream drill heads or extraction tools are arranged on the shells or end faces of rollers, disc tools can again be used, as with the central drill head, so as to enable the achievement of cutting performances adapted to the material to be extracted. In a particularly advantageous manner, the configuration is devised such that the extraction tools are designed as roller bits.
In order to ensure rapid walling and a high driving performance even with hard rock while, at the same time, achieving a largely plane floor, the configuration is advantageously devised such that, outside the vertical longitudinal central plane, two rollers are rotationally mounted, whose axial length is between 50 and 75%, preferably 60 to 70%, of the radius of the drill head, wherein the downstream roller bits are preferably mounted on the shells of the rollers with the axes of rotation extending substantially parallelly to the axes of rotation of the rollers. Such dimensioning of the rollers, and such an arrangement of the axis of rotation of the roller bits, allow the respective dimensions and distances to be selected with a view to achieving an accordingly optimized overall driving performance adapted to the cube compressive strength of the respective material to be excavated. In this respect, the configuration is advantageously devised such that the axial distances of the roller bits distributedly arranged on the shell are 75 to 100%
of the radial distances of the roller bits of the drill bit.
In this manner, the same cutting parameters as with the discs of the rotational main drill head can be maintained.
In a particularly advantageous manner, the material cut by the discs of the rollers can be taken up by clearing tools which become active themselves also in association with the rotationally mounted drill head. In order to enable such haulage, the configuration is advantageously devised such that the rollers are drivable for rotation from the floor upwardly to the mine face, wherein the drill head, and/or a carrier coupled with the drill head, preferably carry clearing tools, in particular chutes and/or shovels, for taking up excavated material, which are movable onto a haulage device via a discharge site. The clearing tools of the drill head may be comprised of rigid chutes fixed within the drill head.
Connected with the drill head may be a rotating carrier with folding shovels each throwing the received material onto the conveyor belt on a delivery or discharge site to a haulage device.
In order to prevent the floor from being dug off too deeply by the roller disc tools, and the entire heading machine from tilting as a whole relative to the mine face, a special type of floor support will be of particular advantage, to which end the configuration is advantageously devised such that a slide-like floor support extending from an end facing the mine beyond the projection of the axes of rotation of the rollers on the floor is arranged in the vertical longitudinal central plane of the heading machine. Such a slide-shaped or skid-shaped support in terms of contour may correspond with the outline shape of the rotationally mounted drill head and, therefore, rest stably on the floor via a relatively large surface area, the floor widening becoming effective outside the floor support slightly higher than the tangent to such a skid-shaped or slide-shaped floor support. The support extends beyond the axis of rotation of the roller in order to be able to also safely absorb reaction forces.
In one aspect, the invention provides a full-cut heading machine including a drill head for hard rock, which is rotationally mounted about an axis of rotation extending in - 4a -a driving direction, as well as downstream extraction tools for producing a floor widened in a floor region, wherein the downstream extraction tools are arranged on shells of rollers rotationally mounted transversely to the axis of rotation of the drill head and substantially parallel to a plane of a floor.
In the following, the invention will be explained in more detail by way of an exemplary embodiment schematically illustrated in the drawing. Therein, Fig. 1 is a front view of the full-cut heading machine according to the invention; Fig.
-2 is a view in the same direction on a section along line II-II of Fig. 3; and Fig. 3 depicts an axial section through the forward region of the heading machine according to the invention.
Fig. 1 depicts a drill head 1 for hard rock, which carries rotationally mounted extraction tools or disc tools 2. The discs are rotationally mounted about substantially radial axes. In the illustration according to Fig. 1, portions of the laterally cantilevering rollers 3 and 4 are respectively visible in the lower region, each again carrying extraction tools or disc tools 5. The disc tools 5 provided on the rollers 3, 4 serve to cut or excavate the floor widening.
From the illustration according to Fig. 2, the rollers 3 and 4 as well as the disc tools 5 arranged on these rollers are again visible. The distance a of adjacent disc tools on the shells of the rollers 3 and 4, respectively, in this case is chosen as a function of the radial distances of the discs 2 of the drill head 1 in order to optimize the cutting performance.
The axis of rotation of the drill head is denoted by 6 in Fig.
2, on which also the skid-shaped floor support 7 resting on the floor 8 is apparent. The machine is equipped with lateral supports 9 as well as a roof support 10, which can be pressed against the already cut road or tunnel profile. The pressing cylinders for the supports 9 are, for instance, denoted by 11.
From the illustration according to Fig. 3, discs 2 are again apparent, which are rotationally mounted on the drill head 1.
The drill head 1, moreover, carries shovel-like chutes 12, via which material is upwardly conveyed at a rotation of the drill head about the axis 6 and which enable the throwing off of cut material on an upwardly located delivery site to a haulage device 13. The axes of rotation of the rollers 3 and 4 are denoted by 14, the envelope cut by the rotating bits being indicated at 15.
A carrier 16 connected with the drill head 1 carries folding shovels 17, via which the material cut and taken up by the rollers rotating in the sense of arrow 18 is again conveyed towards a delivery point to the haulage means 13.
The floor support in the form of a skid 7 extends below the axis of rotation 14 of the roller 3 from a front end facing the mine face 19 to a rear end 20 located behind the projection of the axis 14, thus effectively counteracting tilting of the heading machine.
Claims (10)
1. A full-cut heading machine including a drill head for hard rock, which is rotationally mounted about an axis of rotation extending in a driving direction, as well as downstream extraction tools for producing a floor widened in a floor region, wherein the downstream extraction tools are arranged on shells of rollers rotationally mounted transversely to the axis of rotation of the drill head and substantially parallel to a plane of a floor.
2. A full-cut heading machine according to claim 1, wherein the downstream extraction tools are arranged on shells and end faces of rollers rotationally mounted transversely to the axis of rotation of the drill head and substantially parallel to a plane of a floor.
3. A full-cut heading machine according to claim 1 or 2, wherein the extraction tools are designed as roller bits.
4. A full-cut heading machine according to any one of claims 1 to 3, wherein outside the vertical longitudinal central plane of the full-cut heading machine, two rollers are rotationally mounted, whose axial length is between 50 and 75% of the radius of the drill head.
5. A full-cut heading machine according to any one of claims 1 to 3, wherein outside the vertical longitudinal central plane of the full-cut heading machine, two rollers are rotationally mounted, whose axial length is between 60 to 70% of the radius of the drill head.
6. A full-cut heading machine according to any one of claims 1 to 5, wherein downstream roller bits are mounted on the shells of the rollers with the axes of rotation extending substantially parallel to the axes of rotation of the rollers.
7. A full-cut heading machine according to any one of claims 1 to 4, wherein axial distances (a) between of the roller bits distributedly arranged on the shell are 75 to 100% of radial distances of the roller bits of a drill bit.
8. A full-cut heading machine according to any one of claims 1 to 7, wherein the rollers are drivable for rotation from the floor upwardly to a mine face.
9. A full-cut heading machine according to claim 8, wherein a slide-like floor support extending from an end facing the mine face beyond the projection of the axes of rotation of the rollers on the floor is arranged in the vertical longitudinal central plane of the heading machine.
10. A full-cut heading machine according to any one of claims 1 to 9, wherein the drill head, and/or a carrier coupled with the drill head carry clearing tools, in the form of chutes and/or folding shovels, for taking up excavated material, which are movable onto a haulage device via a discharge site.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0157306A AT504281B1 (en) | 2006-09-20 | 2006-09-20 | FULL CUT heading machine |
| ATA1573/2006 | 2006-09-20 | ||
| PCT/AT2007/000444 WO2008034155A1 (en) | 2006-09-20 | 2007-09-19 | Full-cut heading machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2663645A1 CA2663645A1 (en) | 2008-03-27 |
| CA2663645C true CA2663645C (en) | 2012-06-05 |
Family
ID=38668784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2663645A Expired - Fee Related CA2663645C (en) | 2006-09-20 | 2007-09-19 | Full-cut heading machine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20090309409A1 (en) |
| CN (1) | CN101578426A (en) |
| AT (1) | AT504281B1 (en) |
| AU (1) | AU2007299557A1 (en) |
| CA (1) | CA2663645C (en) |
| WO (1) | WO2008034155A1 (en) |
| ZA (1) | ZA200901791B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT510656A1 (en) * | 2010-11-05 | 2012-05-15 | Sandvik Mining & Constr Oy | FULL CUT heading machine |
| CN103670428B (en) * | 2013-11-29 | 2016-07-13 | 北京交通大学 | Soft soil layer shield directly cuts the tooling setup method of large diameter pile foundation |
| FR3034806A1 (en) * | 2015-04-08 | 2016-10-14 | Nfm Tech | TOOTHING TOOL FOR A TUNNELIER, AND TUNNELIER COMPRISING SUCH A TOOL |
| CN106089225B (en) * | 2016-08-09 | 2018-01-30 | 黄河勘测规划设计有限公司 | TBM cutterheads |
| CN107559019B (en) * | 2017-09-30 | 2023-11-24 | 嘉盛建设集团有限公司 | Slurry balance type pipe jacking tunneling machine and pipe jacking tunneling method for rock geology |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2770448A (en) * | 1955-02-14 | 1956-11-13 | Goodman Mfg Co | Extensible rotary cutter bar for boring type miner |
| DE3410121A1 (en) * | 1984-03-20 | 1985-10-03 | Saarbergwerke AG, 6600 Saarbrücken | Selective-cut heading machine with central and outer drum |
| US4889392A (en) * | 1989-02-28 | 1989-12-26 | Coaltex, Inc. | Advance/retreat cutting miner and method |
| JPH0525999A (en) * | 1991-07-17 | 1993-02-02 | Taisei Corp | Shield machine |
| US5904211A (en) * | 1993-09-20 | 1999-05-18 | Excavation Engineering Associates, Inc. | Disc cutter and excavation equipment |
| DE4413235C2 (en) * | 1994-04-15 | 1999-04-29 | Voest Alpine Tunneltechnik Gmb | Tunnel boring machine or pipe jacking machine |
| JP2943096B2 (en) * | 1994-12-12 | 1999-08-30 | 稔 山本 | Tunnel machine used for large section tunnel construction method |
| AUPQ042699A0 (en) * | 1999-05-18 | 1999-06-10 | Road Services Of Australia Pty Ltd | A cutting apparatus |
| US6612655B2 (en) * | 2001-02-22 | 2003-09-02 | Amvest Systems Inc. | Mining system and method featuring a bread loaf shaped borehole |
| US6484766B1 (en) * | 2001-08-27 | 2002-11-26 | Bb&F Enterprises, Llc | Stump grinding apparatus having improved cutter tool |
| US20060118313A1 (en) * | 2004-12-08 | 2006-06-08 | Nicholas James A | Surface-contouring implement |
| SK286574B6 (en) * | 2005-12-29 | 2009-01-07 | Marián Krčík | Tunnel driving machine with a horseshoe-shaped transverse profile |
-
2006
- 2006-09-20 AT AT0157306A patent/AT504281B1/en not_active IP Right Cessation
-
2007
- 2007-09-19 AU AU2007299557A patent/AU2007299557A1/en not_active Abandoned
- 2007-09-19 WO PCT/AT2007/000444 patent/WO2008034155A1/en active Application Filing
- 2007-09-19 CN CNA2007800350554A patent/CN101578426A/en active Pending
- 2007-09-19 CA CA2663645A patent/CA2663645C/en not_active Expired - Fee Related
- 2007-09-19 US US12/310,948 patent/US20090309409A1/en not_active Abandoned
-
2009
- 2009-03-12 ZA ZA2009/01791A patent/ZA200901791B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008034155A1 (en) | 2008-03-27 |
| AT504281B1 (en) | 2010-08-15 |
| CN101578426A (en) | 2009-11-11 |
| CA2663645A1 (en) | 2008-03-27 |
| ZA200901791B (en) | 2010-02-24 |
| AU2007299557A1 (en) | 2008-03-27 |
| AT504281A2 (en) | 2008-04-15 |
| US20090309409A1 (en) | 2009-12-17 |
| AT504281A3 (en) | 2010-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130919 |