US20110275501A1 - Apparatus for cooling a roll on a roll stand - Google Patents
Apparatus for cooling a roll on a roll stand Download PDFInfo
- Publication number
- US20110275501A1 US20110275501A1 US13/122,579 US200913122579A US2011275501A1 US 20110275501 A1 US20110275501 A1 US 20110275501A1 US 200913122579 A US200913122579 A US 200913122579A US 2011275501 A1 US2011275501 A1 US 2011275501A1
- Authority
- US
- United States
- Prior art keywords
- roll
- axis
- lever
- spray beam
- spray
- 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.)
- Abandoned
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 76
- 239000002826 coolant Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
Abstract
The invention concerns an apparatus (1) for cooling a roll (2) in a roll stand and provided with at least one spray beam (3) supplied with a cooling medium, especially water, with spray nozzles (4) for spraying cooling medium onto the surface of the roll (2), and that extends generally parallel to a spray beam axis (5) extending parallel to the roll axis (6). In order to be able to adjust the spray beam for changed roll diameters, the invention provides that the spray beam (3) is mounted directly or indirectly on a lever (7) that can pivot around a rotation axis (8) that is parallel to the roll axis (6), and the spray beam axis (5) and the rotation axis (8) are spaced from each other.
Description
- The invention concerns an apparatus for cooling a roll in a roll stand with at least one spray beam supplied with a cooling medium, particularly with water, that has spray nozzles for spraying cooling medium onto the surface of the roll, and that extends generally parallel to a spray beam axis extending parallel to the roll axis.
- A cooling apparatus of this type has been described in the prior art. EP 0 374 538 [U.S. Pat. No. 4,912,955] discloses a cooling apparatus designed for spraying water onto the rolls of the roll stand, for which a spray beam is used. There, the problem is recognized that the optimal position of the spray beam changes depending on the rolls used, so that such is designed adjustable. The spray beam is suspended such that it can be moved horizontally and vertically in such a way that the roll can be cooled optimally.
- A similar solution is shown in EP 0 542 640 [U.S. Pat. No. 5,212,975]. Here too, a spray beam is provided for cooling a roll. It can be rotated around the longitudinal axis of the spray beam to adjust the position of the spray beam. In this way, optimal spraying of the roll is achieved.
- Additional solutions of cooling systems are described in
EP 1 399 276 [U.S. Pat. No. 7,266,698], inEP 1 142 652 [U.S. Pat. No. 6,450,000], in DE 34 19 261 [U.S. Pat. No. 4,750,343], in DE 94 18 359, in DE 195 03 544 and in U.S. Pat. No. 5,460,023. - All these solutions have in common that either a complex mechanism must be used to achieve spray beam adjustment that is stable, reliable and precise in difficult rolling-mill conditions, which is associated with corresponding costs, or that the adjustment possibilities of the spray beam are not sufficient to, particularly for different roll diameters, always be able to obtain the optimal spray beam positioning and alignment.
- Therefore, the object of present invention is to develop a cooling apparatus of the type described above further in such a way that with a simple and stable design that can be realized in a cost-effective manner, an optimal adjustment of the spray beam of the cooling apparatus is made possible. Furthermore, it must ensure in particular that after a change of rolls and the associated changed roll diameter and/or change of the position of the roll, the optimal spray beam position and alignment can always be selected, in order to achieve an optimal cooling result.
- This object is attained by the invention in that the spray beam is mounted directly or indirectly on a lever that can pivot about a rotation axis extending parallel to the roll axis and the spray beam axis and the rotation axis are spaced from each other.
- Accordingly, the spray beam can be moved in a straight line in two spatial directions by a pivoting motion of the lever, and thus be adjusted relative to the roll to be cooled.
- Thus, the lever is preferably connected to the actuator at a location offset from the rotation axis. Preferably, the lever has two arms, the spray beam being mounted directly or indirectly on the first arm and the actuator being mounted on the second arm.
- The adjustment possibilities of the spray beam are increased further by the following provisions: The spray beam can be mounted indirectly on the main lever by an intermediate lever that is mounted such that it can be pivoted around a rotation axis extending parallel to the roll axis. For pivoting the intermediate lever around its rotation axis, an additional actuator can be mounted. The additional actuator is preferably operatively connected between the second arm and the intermediate lever. The spray beam can be fixedly connected with the intermediate lever. The rotation axis of the intermediate lever is preferably located between the spray beam and the point of application of the additional actuator on the intermediate lever.
- The actuators are preferably designed to create defined displacement paths. Preferably, but not necessarily, the actuators are hydraulic piston-cylinder systems.
- As a result of the proposed solution it is possible to achieve evened cooling of a roll, independent of roll diameter.
- In particular, with it, the same coverage of the spray of the individual spray nozzles can be maintained, so that the same cooling effect is always attainable, specifically for different roll diameters.
- In the proposed solution, the spacings between nozzle and roll or roll and coverage of the cooling medium spray are always held constant as the result of simple and optimal readjustment of the spray beam for various rolls or roll diameters.
- In principle, hydraulic, pneumatic or electrically operated actuators are usable as actuators, eccentric cam disks or articulated joints also being usable. There also exists the possibility of using the proposed solution when parameters of the cooling medium are changed in order to influence the cooling effect.
- Thus, with the proposed embodiment, the same spacing of the spray nozzles from the roll can always be selected and the surface impinged upon by the spray nozzle can be held constant. This way, the impact pressure and point of impact of the cooling medium is held constant on the roll surface.
- The spray beam can also be pivoted to achieve a vertical change of the point of impact and thus a change in the cooling effect. Pivoting of the spray beam for a targeted change of the coverage of the spray is also possible.
- The drawings show embodiments of the invention. Therein:
-
FIG. 1 is a side view of an apparatus for cooling a roll of a roll stand, using a roll with a first diameter, -
FIG. 2 is a side view of the same apparatus using a roll with a second, smaller diameter, -
FIG. 3 is a partial perspective cross-sectional view of the cooling apparatus as inFIG. 1 orFIG. 2 , for the upper roll of the roll stand, as well as an alternatively designed cooling apparatus for a lower roll, -
FIG. 4 is a perspective view of the cooling apparatus ofFIG. 3 for the lower roll. -
FIG. 1 schematically illustrates anapparatus 1 for cooling aroll 2 of a roll stand (not shown). An important component of the cooling apparatus is aspray beam 3 that is supplied by a water line 15 with water sprayed in a manner known per se bynozzles 4 and onto the surface of theroll 2. Thespray beam 3 is tubular and has anaxis 5 extending parallel to aroll axis 6. - In order to be able to adapt the
spray beam 3 optimally to various diameters of roll orrolls 2, the spray beam is not stationary, but is movable. To this end, alever 7 is provided that is mounted so that it can be pivoted around afixed rotation axis 8. Thelever 7 has twoarms spray beam 3 is mounted indirectly via anintermediate lever 12 at the outer end of thefirst arm 10. Anactuator 9 of the linear type engages thesecond arm 11. Theactuator 9 is pivoted at itsother end 16 at a stationary point. - If the
actuator 9 is operated, thelever 7 is pivoted about itsrotation axis 8, so that the end of thefirst arm 10 moves thespray beam 3 around therotation axis 8 in a circular arc and readjusts its position. Accordingly, the spacing of thespray nozzles 4 from the roll surface is changed. This effect can be utilized in order to adjust thespray beam 3 for changing roll diameters and to thus always maintain the same (optimal) cooling conditions. - In addition, the
spray beam 3 is also located in such a way that its position can also be adjusted (especially rotated around the spray beam axis 5). To this end, the already mentionedintermediate level 12 is provided. Theintermediate lever 12 is used for the indirect mounting of thespray beam 3 at the end of thefirst arm 10. Theintermediate lever 12 is mounted on the end of thefirst arm 10 oflever 7, i.e. it can pivot around a rotation axis 13 relative to thefirst arm 10. The pivoting motion is controlled by a second actuator 14 that has one pivoted on theintermediate lever 12 and another end pivoted on thesecond arm 11 of thelever 7. - By joint action of the two
actuators 9 and 14, thespray beam 3 consequently can be optimally adjusted with respect to its horizontal and vertical position relative toroll 2, rotation of thespray beam 3 around itsspray beam axis 5 being superimposed on this motion. - A comparison of
FIGS. 1 and 2 shows how such a readjustment takes place when it is important after a change of rolls to place thespray beam 3 optimally in position. InFIG. 1 , aroll 3 is used that has a larger diameter than theroll 2 seen inFIG. 2 . - Accordingly, in
FIG. 2 thelever 7 was pivoted through an angle α by theactuator 9. As a result of a readjustment motion of the second actuator 14, a correction of the vertical position of the spray beam can be made. - In
FIG. 3 , a roll stand is shown which anupper roll 2 and alower roll 2′ that works together with it is indicated, provided withrespective cooling apparatus - As can be seen, the two
rolls different cooling apparatuses Apparatus 1 is used for theupper roll 2, as described inFIGS. 1 and 2 . - For the
lower roll 2′, thecooling apparatus 1′ of simpler design is used, as illustrated in somewhat more detail inFIG. 4 . - According to it, the
cooling apparatus 1′ is also provided with aspray beam 3′ withspray nozzles 4′, but here, however, thespray beam 3′ is fixed directly to alever 7′. Theactuator 9′ engages thelever 7′ in such a way that thislever 7′ including therespective spray beam 3′ can be pivoted toward theroll 2′ or away from it. - In both solutions that were described—i.e. for
apparatus 1 andapparatus 1′—the same principle applies, namely, that thespray beam lever lever rotation axis 8 that is parallel to theroll axis 6. Thespray beam axis 5 and therotation axis 8 are spaced from each other. - Among other things, the outcome of the cooling is dependent on the cooling medium, its pressure, its temperature, its quantity, the type of nozzle and orientation relative to the spray beam and of course, also from the distance between the nozzle and the roll or drum that is to be cooled, as well as the temperature of the roll.
- Accordingly, a different type of nozzle or a different coverage can influence the cooling effect extending over the width of the roll.
-
- 1 Apparatus
- 1′ Apparatus
- 2 Roll
- 2′ Roll
- 3 Spray beam
- 3′ Spray beam
- 4 Spray nozzle
- 4′ Spray nozzle
- 5 Spray beam axis
- 6 Roll axis
- 7 Lever
- 7′ Lever
- 8 Rotation axis
- 9 Actuator
- 9′ Actuator
- 10 First arm
- 11 Second arm
- 12 Intermediate lever
- 13 Rotation axis
- 14 Actuator
- 15 Water line
- 16 End of actuator
- α Angle
Claims (11)
1. An apparatus for cooling a roll in a roll frame, comprising at least one spray beam supplied with a cooling medium that has spray nozzles for spraying the cooling medium onto the surface of the roll, and that extends generally parallel to a spray beam axis extending parallel to the roll axis, wherein the spray beam is mounted directly or indirectly on a lever that can pivot about a rotation axis extending parallel to the roll axis and the spray beam axis and the rotation axis are spaced from each other.
2. The apparatus according to claim 1 , wherein the lever is connected with an actuator at a location offset from the rotation axis.
3. The apparatus according to claim 2 , wherein the lever has two arms, the spray beam being mounted directly or indirectly on the first arm and whereby the actuator being connected to the second arm.
4. The apparatus according to claim 1 , wherein the spray beam is mounted on the lever indirectly via an intermediate lever, the intermediate lever being mounted so that it can be pivoted on the lever at a rotation axis extending parallel to the roll axis.
5. The apparatus according to claim 4 , wherein an additional actuator is provided for pivoting the intermediate lever around its rotation axis.
6. The apparatus according to claim 5 , wherein the additional actuator is operative connected between the second arm and the intermediate lever.
7. The apparatus according to claim 4 , wherein the spray beam is fixedly mounted on the intermediate lever.
8. The apparatus according to claim 5 , wherein the rotation axis of the intermediate lever is located between the spray beam and the pivot axis of the additional actuator on the intermediate lever.
9. The apparatus according to claim 8 , wherein the actuators are designed for establishing defined displacement paths.
10. The apparatus according to claim 9 , wherein the actuators are hydraulic piston-cylinder assemblies.
11. In combination with a roll rotatable about a roll axis in a roll frame, a cooling apparatus comprising:
a lever pivotal on the roll frame about a lever axis extending parallel to the roll axis;
a spray beam mounted on the lever offset from the lever axis and from the roll axis, extending along a beam axis generally parallel to and offset from the roll axis, and having nozzles directed from the beam axis at the roll;
means for supplying a cooling medium through the beam to the nozzles for spraying the cooling medium on the roll; and
means for pivoting the lever about the lever axis and thereby moving the spray beam radially of the roll axis.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008058057.0 | 2008-11-18 | ||
DE102008058057 | 2008-11-18 | ||
DE102009040876A DE102009040876A1 (en) | 2008-11-18 | 2009-09-09 | Device for cooling a roll in a roll stand |
DE102009040876.2 | 2009-09-09 | ||
PCT/EP2009/008153 WO2010057610A1 (en) | 2008-11-18 | 2009-11-17 | Device for cooling a roller in a rolling unit |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110275501A1 true US20110275501A1 (en) | 2011-11-10 |
Family
ID=42105326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/122,579 Abandoned US20110275501A1 (en) | 2008-11-18 | 2009-11-17 | Apparatus for cooling a roll on a roll stand |
Country Status (11)
Country | Link |
---|---|
US (1) | US20110275501A1 (en) |
EP (1) | EP2346624A1 (en) |
JP (1) | JP5465728B2 (en) |
KR (1) | KR101311760B1 (en) |
CN (1) | CN102215990A (en) |
BR (1) | BRPI0921463A2 (en) |
CA (1) | CA2743220C (en) |
DE (1) | DE102009040876A1 (en) |
RU (1) | RU2469807C1 (en) |
UA (1) | UA101535C2 (en) |
WO (1) | WO2010057610A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105327940A (en) * | 2015-10-27 | 2016-02-17 | 山东钢铁股份有限公司 | Adjustable roller groove cooling device |
CN113182356A (en) * | 2021-03-25 | 2021-07-30 | 阳春新钢铁有限责任公司 | Hot-rolled section steel lower roll cooling device |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102247995A (en) * | 2011-05-26 | 2011-11-23 | 攀钢集团有限公司 | Method for detecting and regulating cooling effect of roller and roller cooling device |
DE102012201157B4 (en) | 2012-01-26 | 2017-06-01 | Achenbach Buschhütten GmbH & Co. KG | Method and device for relative positioning of a nozzle beam of a roll stand inlet fitting |
KR101653515B1 (en) * | 2013-03-15 | 2016-09-01 | 노벨리스 인크. | Manufacturing methods and apparatus for targeted cooling in hot metal rolling |
US20160101451A1 (en) * | 2014-10-09 | 2016-04-14 | Josef Froehling Gmbh & Co. Kg | Rolling Device and Rolling Process |
DE102014224318A1 (en) * | 2014-11-27 | 2016-06-02 | Sms Group Gmbh | Apparatus and method for cooling a roll |
DE102015219053A1 (en) * | 2015-10-01 | 2017-04-06 | Achenbach Buschhütten GmbH & Co. KG | Method and device for cooling a roll arranged in a roll stand |
EP3670011B1 (en) * | 2018-12-21 | 2022-09-28 | Primetals Technologies Austria GmbH | Cooling of metal strip in a rolling stand |
DE102020213287A1 (en) | 2020-10-21 | 2022-04-21 | Sms Group Gmbh | Modular spray bar system for selective cooling and/or lubrication of rollers |
CN113715493B (en) * | 2021-07-20 | 2022-12-16 | 杭州华星印务股份有限公司 | Printing roller with water-cooling heat abstractor |
Citations (8)
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US3885741A (en) * | 1971-10-27 | 1975-05-27 | Demag Ag | Apparatus for cooling metal webs |
US3995684A (en) * | 1974-03-20 | 1976-12-07 | Concast Ag | Apparatus for the direct cooling of a strand |
US4706480A (en) * | 1985-10-11 | 1987-11-17 | Svatos Joseph D | Rolling mill cooling system |
US5212975A (en) * | 1991-05-13 | 1993-05-25 | International Rolling Mill Consultants, Inc. | Method and apparatus for cooling rolling mill rolls and flat rolled products |
US5553469A (en) * | 1992-11-25 | 1996-09-10 | Sms Schloemann-Siemag Aktiengesellschaft | Method of controlling thermally alterable profile of working rolls |
US7159433B2 (en) * | 2001-06-28 | 2007-01-09 | Sms Demag Ag | Method and device for cooling and lubricating rollers on a rolling stand |
US7472574B2 (en) * | 2004-06-09 | 2009-01-06 | Hartmut Pawelski | Method of and rolling mill stand for cold rolling mill stand for cold rolling of metallic rolling stock in particular rolling strip with nozzles for gaseous or liquid treatment media |
US7690235B2 (en) * | 2004-05-18 | 2010-04-06 | Sms Demag Ag | Method of and device for cooling and or lubrication |
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SU858964A1 (en) * | 1979-12-27 | 1981-08-30 | Коммунарский горно-металлургический институт | Apparatus for cooling workrolls of bar mills |
SU908438A1 (en) * | 1980-03-07 | 1982-02-28 | Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт | Apparatus for cooling rolling mill rolls |
JPS5939409A (en) * | 1982-08-28 | 1984-03-03 | Mitsubishi Heavy Ind Ltd | Roll cooling device in cross rolling mill |
DE3419261C3 (en) | 1984-05-23 | 1994-12-15 | Achenbach Buschhuetten Gmbh | Roll cooling and / or lubricating device for cold strip rolling mills, especially fine strip rolling mills |
JPS61162307U (en) * | 1985-03-28 | 1986-10-08 | ||
US4912955A (en) | 1988-12-05 | 1990-04-03 | Norandal Usa Inc. | Spray system for rolling mill |
JP2710392B2 (en) * | 1989-03-14 | 1998-02-10 | 新日本製鐵株式会社 | Roller roll water jacket cooling system |
US5460023A (en) | 1991-09-13 | 1995-10-24 | International Rolling Mill Consultants Inc. | Roll surface restoration system and method |
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DE19737735A1 (en) * | 1997-08-29 | 1999-03-04 | Schloemann Siemag Ag | Device and method for cooling the work rolls of a roll stand on the outlet side |
DE20006508U1 (en) | 2000-04-08 | 2000-08-31 | Achenbach Buschhuetten Gmbh | Roller cooling and / or lubricating device for cold strip rolling mills, in particular fine strip and foil rolling mills |
DE10130445A1 (en) | 2001-06-23 | 2003-01-02 | Sms Demag Ag | Method and arrangement of nozzles for variable width lubrication of a roll stand |
CN201135995Y (en) * | 2007-11-09 | 2008-10-22 | 佛山市顺德区冠邦科技有限公司 | Cooling device for planet tube grimper |
-
2009
- 2009-09-09 DE DE102009040876A patent/DE102009040876A1/en not_active Withdrawn
- 2009-11-17 WO PCT/EP2009/008153 patent/WO2010057610A1/en active Application Filing
- 2009-11-17 BR BRPI0921463A patent/BRPI0921463A2/en not_active IP Right Cessation
- 2009-11-17 UA UAA201107659A patent/UA101535C2/en unknown
- 2009-11-17 EP EP09756143A patent/EP2346624A1/en not_active Withdrawn
- 2009-11-17 CA CA2743220A patent/CA2743220C/en not_active Expired - Fee Related
- 2009-11-17 JP JP2011535925A patent/JP5465728B2/en not_active Expired - Fee Related
- 2009-11-17 US US13/122,579 patent/US20110275501A1/en not_active Abandoned
- 2009-11-17 RU RU2011124957/02A patent/RU2469807C1/en not_active IP Right Cessation
- 2009-11-17 KR KR1020117009335A patent/KR101311760B1/en not_active IP Right Cessation
- 2009-11-17 CN CN2009801467901A patent/CN102215990A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3885741A (en) * | 1971-10-27 | 1975-05-27 | Demag Ag | Apparatus for cooling metal webs |
US3995684A (en) * | 1974-03-20 | 1976-12-07 | Concast Ag | Apparatus for the direct cooling of a strand |
US4706480A (en) * | 1985-10-11 | 1987-11-17 | Svatos Joseph D | Rolling mill cooling system |
US5212975A (en) * | 1991-05-13 | 1993-05-25 | International Rolling Mill Consultants, Inc. | Method and apparatus for cooling rolling mill rolls and flat rolled products |
US5553469A (en) * | 1992-11-25 | 1996-09-10 | Sms Schloemann-Siemag Aktiengesellschaft | Method of controlling thermally alterable profile of working rolls |
US7159433B2 (en) * | 2001-06-28 | 2007-01-09 | Sms Demag Ag | Method and device for cooling and lubricating rollers on a rolling stand |
US7690235B2 (en) * | 2004-05-18 | 2010-04-06 | Sms Demag Ag | Method of and device for cooling and or lubrication |
US7472574B2 (en) * | 2004-06-09 | 2009-01-06 | Hartmut Pawelski | Method of and rolling mill stand for cold rolling mill stand for cold rolling of metallic rolling stock in particular rolling strip with nozzles for gaseous or liquid treatment media |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105327940A (en) * | 2015-10-27 | 2016-02-17 | 山东钢铁股份有限公司 | Adjustable roller groove cooling device |
CN113182356A (en) * | 2021-03-25 | 2021-07-30 | 阳春新钢铁有限责任公司 | Hot-rolled section steel lower roll cooling device |
Also Published As
Publication number | Publication date |
---|---|
JP5465728B2 (en) | 2014-04-09 |
KR101311760B1 (en) | 2013-09-26 |
WO2010057610A8 (en) | 2011-04-28 |
DE102009040876A1 (en) | 2010-05-20 |
JP2012509176A (en) | 2012-04-19 |
CN102215990A (en) | 2011-10-12 |
CA2743220C (en) | 2014-03-25 |
BRPI0921463A2 (en) | 2016-01-12 |
KR20110059898A (en) | 2011-06-07 |
RU2469807C1 (en) | 2012-12-20 |
CA2743220A1 (en) | 2010-05-27 |
UA101535C2 (en) | 2013-04-10 |
WO2010057610A1 (en) | 2010-05-27 |
EP2346624A1 (en) | 2011-07-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SMS SIEMAG AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BENNER, FRANK-GUENTER;REEL/FRAME:026645/0849 Effective date: 20110621 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |