EP0159728A1 - Doppelnutvorrichtung um ein Walzprodukt abzubremsen, welches einem Kühlbett zugeführt wird - Google Patents

Doppelnutvorrichtung um ein Walzprodukt abzubremsen, welches einem Kühlbett zugeführt wird Download PDF

Info

Publication number
EP0159728A1
EP0159728A1 EP85200174A EP85200174A EP0159728A1 EP 0159728 A1 EP0159728 A1 EP 0159728A1 EP 85200174 A EP85200174 A EP 85200174A EP 85200174 A EP85200174 A EP 85200174A EP 0159728 A1 EP0159728 A1 EP 0159728A1
Authority
EP
European Patent Office
Prior art keywords
channel
brake
rolled product
cooling plate
rolled
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.)
Granted
Application number
EP85200174A
Other languages
English (en)
French (fr)
Other versions
EP0159728B1 (de
Inventor
Alfredo Poloni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danieli and C Officine Meccaniche SpA
Original Assignee
Danieli and C Officine Meccaniche SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11320325&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0159728(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Danieli and C Officine Meccaniche SpA filed Critical Danieli and C Officine Meccaniche SpA
Priority to AT85200174T priority Critical patent/ATE37998T1/de
Publication of EP0159728A1 publication Critical patent/EP0159728A1/de
Application granted granted Critical
Publication of EP0159728B1 publication Critical patent/EP0159728B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B21B43/003—Transfer to bed

Definitions

  • This invention concerns a two-channel device to brake a rolled product being fed to a cooling plate.
  • the invention concerns a device that enables a rolled bar or section which is sliding at speeds considerably higher than those employed hitherto in the state of the art, to be braked with regard to the feeding of the same to a cooling plate.
  • the device of the invention performs the braking of such rolled product downstream from the shears which cut to size the rolled products leaving a rolling train.
  • the device carries out also the discharge of such braked rolled products onto the cooling plate.
  • Brake devices which make use of braking channels cooperating with movable panels to brake and discharge a rolled product.
  • Patent GB-A-989,865 discloses a system with multiple channels which is closed above by a panel.
  • the device is of a type in which the braking elements are floorplates, that is to say, the rolled stock is braked by friction caused by its own weight acting against the bottom of the reception channel; a vertically movable floorplate can be lowered to make the rolled stock slide into the neighbouring channel, and lastly a further slide floorplate serves to receive the rolled stock and to discharge it onto the cooling plate.
  • Patent DE-A-1.020.949 discloses a two-channel device in which the braking takes place by sliding on the lower side, or floor, of the channels.
  • the device comprises a first set of slide plates able to lift the rolled stock braked in the first channel so as to make it slide onto the cooling plate; to cause this, bridge elements spaced apart are provided which pass over the second channel.
  • bridge elements are raised from below by retractable pivots so as to discharge the rolled stock within the second channel onto the cooling plate; such rolled stock is lifted by raisable slide plates in the same way as in GB-A-989,86s.
  • Patent CS-A-3,236,084 discloses guide-type deviator means to send the rolled stock to one or the other of two braking- shearing lines with a flying shears, two identical braking paths being provided.
  • the speeds of rolled product which can be employed with the known devices do not exceed 16 to 20 metres per second in the case of roll-formed sections such as angle bars, T-beams, etc.
  • the reason for this is that the known devices cannot brake a length of rolled product cut to size and discharge it onto the cooling plate before the next length of rolled product arrives into the brake device itself.
  • the device of the invention enables very high speeds of a rolled product entering the device to be employed.
  • such speeds can be of the order of 30 to 35 metres per second or higher.
  • the device of the invention is especially advantageous in the braking of sections such as angle bars, T-beams, etc. which cause the greatest restrictions of speed in the known art.
  • the working principle on which the device of the invention is based envisages the employment of two channels positioned parallel to each other.
  • the rolled product is delivered into the one of such channels which lies in a higher position. It is then discharged from this higher channel into the lower channel by being displaced sideways along the sloping surface formed by the bottom of the channels themselves.
  • the displacement of a rolled product from one channel to the other is obtained by means of vanes which can be lifted and which in their working position support at its side a rolled product sliding in the higher channel.
  • vanes being raised or at any rate displaced from their working position, enable the rolled product to descend sideways into the lower channel.
  • the rolled product is braked there by means of a brake that acts on its tail end and is of a known type, and is then discharged onto the cooling plate.
  • Such discharge is performed by lifting the panels forming one wall for the sliding of the rolled product positioned in the second channel.
  • vanes cited above are independent of the panels and have a separate actuation system.
  • the employment of two channels enables the rolled product to be transferred from the first channel to the second before it is braked. In this way the first of the channels is left free to accept the next length of rolled product.
  • These channels comprise at their bottom a conveyor consisting of powered rollers of a known type to feed the lengths of rolled product and to deliver them to the braking tract.
  • This braking tract which is linked to the tail-brake, is located so as to correspond with the cooling plate, which in this device is of a conventional type.
  • the brake which acts on the tails of the rolled products is also of a known type and employs specially shaped rollers.
  • the shape of such rollers varies to suit the type of rolled product being processed.
  • a switch is provided in the initial part of the roller conveyor. In each braking cycle (apart from the start of processing) this switch sends the rolled product into the first of the two channels.
  • the switch is then positioned in correspondence with the second channel so as to assist the passage of the rolled product from the first channel to the second.
  • the switch before the next length of rolled product arrives, the switch is re-positioned in correspondence with the first of the channels.
  • the conformation of the vanes cited earlier and, at any rate, of the channel that receives the rolled product is such as to obviate any lift-off or excessive displacement of small sections such as flat bars and small angle irons.
  • the invention can also be employed with rolled products of large cross-sections.
  • the device is envisaged as being used in the form of a one- channel device.
  • the preferred embodiment envisages that the vanes are taken out of action and one single channel is obtained which has the size of about that of the sum of the sizes of the two parallel channels.
  • the sections are discharged from that channel onto the cooling plate by means of the raising of the panels located along the side of the roller conveyor.
  • the invention envisages a first portion of the conveyor in which the arriving rolled product undergoes formation of a bend with a very slight curvature.
  • This curvature which extends, as we said, along an initial tract of the conveyor, has the purpose of keeping the rolled product separated from the panels delimiting the one single channel thus formed, up to a forward enough position in the channel.
  • the conveyor has an enlarged portion, which is advantageously positioned towards the beginning of the conveyor, for the purpose of obtaining such curvature.
  • This invention is therefore embodied with a two-channel device to brake a rolled product being fed to a cooling plate, the device being located downstream from a unit which cuts rolled products to size, and comprising a powered roller conveyor, tail-braking means, two adjacent channels with panels to hold rolled products, means to separate the two channels momentarily, and switch means, the device being characterized in that the bottom of the two channels is stationary, the panels to hold the rolled products can move substantially in a vertical direction to disengage and discharge the rolled products onto the cooling plate, and the first channel serves to receive the rolled products, whereas the second channel serves to brake and discharge the rolled products, the tail-braking means being positioned in correspondence with the second channel.
  • a brake device 10 shown in Fig.1 comprises a roller conveyor 14,which includes an end tract 214 parallel and adjacent to a cooling plate 15.
  • the direction of movement of the rolled products 20 is from right to left in the figure.
  • This shears unit 11 may consist of one or two shears.
  • two flying shears 11 may be provided, one being for small cross-sections moving at high speed and the other being for large cross-sections moving at a slow speed.
  • the two shears can be set to work and taken out of action by means of one or more movable carriages.
  • the switch 12 serves to direct the rolled product 20 into the proper channel and also to control and assist the rolled product 20 when the latter 20 is moving from one channel to the other.
  • a means to brake the tails of rolled products, or tail-brake,13 of a known type can be seen near the cooling plate 15.
  • the tail-brake 13 is of a type with specially shaped rollers 30 (see Fig.3) and engages the tails of the lengths of rolled product arriving near the plate 15. A braking action is obtained by means of such rollers 30.
  • the conveyor 14 is of a type having powered rollers and comprises two channels 16 and 17 respectively.
  • the first channel 16 is the channel that receives the rolled product 20, whereas the second channel 17 is the actual braking channel.
  • Fig.2 shows the channels 16-17 ⁇ better with a cross-sectional view.
  • the channel 16 has an immovable wall 35 delimiting a substantially quadrangular space and is closed at its other side with a movable vane 18.
  • the movable vane 18 is pivoted at 24 in this case by means of a knife-edge type of suspension cooperating with a notch in a frame 21 of the device 10.
  • the vanes 18 can be lifted by means of an actuation system including a turnbuckle transmission 27, which is connected to a crank 28 solidly fixed to a shaft 128.
  • Rotation of the shaft 128 is performed by actuators 29, which in this case are jacks and are positioned at intervals along the shaft 128.
  • the other channel 17 is delimited at its sides by the vanes 18 lowered in their working position and by panels 19.
  • the panels 19 too can be raised like the vanes 18.
  • Each panel 19 is moved by a drive cam 25 actuated by a shaft 125.
  • the cam 25 acts on a small roller 26 of the panel 19, which is pivoted on the same axis 24 as the vane 18 with an analogous knife-edge suspension system.
  • the pivots 24 of the vane 18 and panel 19 are located in different positions along the length of the device 10 owing to reasons of constructional order.
  • the shaft 125 lies along the whole length of the device 10 and therefore has as many cams 25 as there are panels 19. The simultaneous actuation of all the panels 19 is simplified in this way.
  • a plurality of panels 19 and vanes 18 is present on the conveyor 14 so as to form two parallel channels 16-17 with a development almost continuous along the whole conveyor 14.
  • the roller conveyor 14 comprises powered rollers 22 supported at one end. Each roller 22 is driven by a motor 23.
  • both the vane 18 and the panel 19 are reinforced to obtain maximum rigidity so as to provide the whole device 10 with maximum strength. This is particularly important when rolled products with a large cross-section are being processed.
  • Fig.3 shows in particular the tail-brake unit 13 located immediately upstream from the cooling plate 15.
  • the figure also shows the roller conveyor 14, of which a powered 23 roller 22 can be seen.
  • the panels 19 and vanes 18 can also be seen in a lengthwise view.
  • Specially shaped rollers 30 of the tail-brake 13 have a profile corresponding to that of the rolled sections to be braked.
  • rollers 30 are sustained by supports 130 and are driven by electric motors 32 and universal joints and propeller shafts 31.
  • the distance between centres of the rollers 30 can be varied in a known manner,suitable actuators such as jacks or equivalent means being provided but not shown in Fig.3 for reasons of simplicity.
  • a slider 33 is employed onto which the motors 32 and supports 130 are fitted.
  • an overturning system for instance, can be used.
  • the tail-brake 13 is of a type known in the art and we shall therefore not dwell upon it further.
  • the device 10 works as follows.
  • the switch 12 is located initially at position 12A in Fig.1, that is to say, it is pointed towards the second channel, or channel of panels, 17.
  • the channel 17 is ready for discharge; the length of rolled product 20 in the channel 17 is braked by the tail-brake 13, and the panels 19 are then raised for discharge of the rolled product 20 onto the plate 15.
  • the switch 12 is now taken back to position 12A. This positioning of the switch 12 assists descent of the rolled product 20 sideways from channel 16 into channel 17.
  • the panels 19 are lowered and the vanes 18 are raised, and therefore the length of rolled product 20 in channel 16 is brought by the force of gravity into channel 17. This descent is assisted by the inclination of the switch 12 at position 12A.
  • channel 17 is positioned at a lower level than channel 16, the channels 16-17 having their bottoms sloped sideways, and the bottoms consisting of the rollers 22 (see Fig.2).
  • the switch 12 is taken back to position 12B and in this way the delivery of the next length of rolled product 20 to arrive is pre-set for channel 16.
  • the panels 19 are lifted for the discharge of the length of rolled product 20 present in channel 17 onto the plate 15. The cycle is then repeated.
  • the invention enables portions of rolled product to be eliminated which have a length unsuitable for subsequent use and are the last to arrive along the rolling line.
  • Such portion therefore continues its run within channel 16 until it reaches a part 116 of that channel 16 not equipped with vanes 18 (see Fig.lb).
  • That portion of rolled product is then displaced from the part 116 of channel 16 to a part 117 of channel 17.
  • the portion is braked lastly by means of a roller conveyor 36 which discharges such portions.
  • This roller conveyor 36 comprises in a known manner a movable bottom 136 which can be raised to brake such portions of rolled product as have to be discarded. One or more parts of this movable bottom 136 can be lifted, depending on the speed of such portions of rolled product. The portions thus braked are butted against a final abutment 236 and are then evacuated in any known way in a collection container 37.
  • this invention is suitable also for use with rolled products of a large cross-section travelling, therefore, at a slow speed.
  • the brake device 10 works as a normal brake device with one single channel.
  • the channel formed by the union of the channels 16 and 17 has a width great enough to receive even the biggest sections, as can be seen in Fig.2.
  • the part 114 of the roller conveyor 14 comprises a width of channel 16 greater than that in the remainder of the conveyor 14.
  • the panels 19 have to have time to be able to ascend and descend so as to discharge the preceding length of rolled product located on the roller conveyor 14.
  • the device 10 can work in this way with one single channel and therefore possesses considerable versatility, being able to serve not only thin sections moving at high speed but also large sections travelling at a slow speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Braking Arrangements (AREA)
EP85200174A 1984-03-16 1985-02-12 Doppelnutvorrichtung um ein Walzprodukt abzubremsen, welches einem Kühlbett zugeführt wird Expired EP0159728B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200174T ATE37998T1 (de) 1984-03-16 1985-02-12 Doppelnutvorrichtung um ein walzprodukt abzubremsen, welches einem kuehlbett zugefuehrt wird.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8333684 1984-03-16
IT83336/84A IT1221162B (it) 1984-03-16 1984-03-16 Dispositivo a doppio canale per la frenature del laminato in alimentazione a una placcca di raffreddamento

Publications (2)

Publication Number Publication Date
EP0159728A1 true EP0159728A1 (de) 1985-10-30
EP0159728B1 EP0159728B1 (de) 1988-10-19

Family

ID=11320325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200174A Expired EP0159728B1 (de) 1984-03-16 1985-02-12 Doppelnutvorrichtung um ein Walzprodukt abzubremsen, welches einem Kühlbett zugeführt wird

Country Status (4)

Country Link
EP (1) EP0159728B1 (de)
AT (1) ATE37998T1 (de)
DE (1) DE3565639D1 (de)
IT (1) IT1221162B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636430A1 (de) * 1993-07-30 1995-02-01 DANIELI & C. OFFICINE MECCANICHE S.p.A. Verfahren für die mehrfache Aufnahme und Aufgabe von Walzprofilen auf ein Kühlbett und Vorrichtung zur Aufführung eines solchen Verfahrens
EP0743109A1 (de) * 1995-05-16 1996-11-20 Sms Schloemann-Siemag Aktiengesellschaft Verfahren und Vorrichtung zum bündigen Abbremsen des Restendes einer Walzlänge beim Transport auf ein Kühlbett
EP0864381A2 (de) * 1997-03-15 1998-09-16 Sms Schloemann-Siemag Aktiengesellschaft Verfahren und Vorrichtung zum Abbremsen und Übergeben von Walzgut
CN111299334A (zh) * 2020-03-22 2020-06-19 广东韶钢松山股份有限公司 一种基于群板上钢系统尾部制动装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020949B (de) * 1957-12-19 Schloemann Aktiengesellschaft, Düsseldorf Rechenkühlbett mit zwei Auflaufrinnen
GB989865A (en) * 1962-02-10 1965-04-22 Schloemann Ag Improvements in and relating to feed-roller run-out troughs in rolling mills for co-operation with a cooling bed
US3236084A (en) * 1963-06-13 1966-02-22 Hitachi Ltd Apparatus for delivering steel bar sections onto the cooling bed of a bar mill

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020949B (de) * 1957-12-19 Schloemann Aktiengesellschaft, Düsseldorf Rechenkühlbett mit zwei Auflaufrinnen
GB989865A (en) * 1962-02-10 1965-04-22 Schloemann Ag Improvements in and relating to feed-roller run-out troughs in rolling mills for co-operation with a cooling bed
US3236084A (en) * 1963-06-13 1966-02-22 Hitachi Ltd Apparatus for delivering steel bar sections onto the cooling bed of a bar mill

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636430A1 (de) * 1993-07-30 1995-02-01 DANIELI & C. OFFICINE MECCANICHE S.p.A. Verfahren für die mehrfache Aufnahme und Aufgabe von Walzprofilen auf ein Kühlbett und Vorrichtung zur Aufführung eines solchen Verfahrens
US5501314A (en) * 1993-07-30 1996-03-26 Danieli & C. Officine Meccaniche Spa Method for the multiple receipt and discharge of rolled sections onto a cooling plate and device performing such method
EP0743109A1 (de) * 1995-05-16 1996-11-20 Sms Schloemann-Siemag Aktiengesellschaft Verfahren und Vorrichtung zum bündigen Abbremsen des Restendes einer Walzlänge beim Transport auf ein Kühlbett
EP0864381A2 (de) * 1997-03-15 1998-09-16 Sms Schloemann-Siemag Aktiengesellschaft Verfahren und Vorrichtung zum Abbremsen und Übergeben von Walzgut
EP0864381A3 (de) * 1997-03-15 1999-03-31 Sms Schloemann-Siemag Aktiengesellschaft Verfahren und Vorrichtung zum Abbremsen und Übergeben von Walzgut
CN111299334A (zh) * 2020-03-22 2020-06-19 广东韶钢松山股份有限公司 一种基于群板上钢系统尾部制动装置

Also Published As

Publication number Publication date
IT1221162B (it) 1990-06-21
IT8483336A0 (it) 1984-03-16
EP0159728B1 (de) 1988-10-19
DE3565639D1 (en) 1988-11-24
ATE37998T1 (de) 1988-11-15

Similar Documents

Publication Publication Date Title
EP1714710B1 (de) Vorrichtung und Methode zur Trennung und zur Rückgewinnung von kurzen Stangen
CN104741441A (zh) 空心导轨自动冲孔生产线
EP0159728B1 (de) Doppelnutvorrichtung um ein Walzprodukt abzubremsen, welches einem Kühlbett zugeführt wird
SE445200B (sv) Arrangemang innefattande ett par till varandra anpassade transportsystem av olika typ
CN113102707B (zh) 一种方坯连铸机的出坯系统及方法
JPS5877707A (ja) 圧延成形材用の積み重ね機械
US4635512A (en) Apparatus for the cutting of rods, especially concrete reinforcing rods
US4873857A (en) Device to draw extruded stock for an extrusion press
US1714131A (en) Mandrel changing and cooling machine
EP0152122A2 (de) Kompakte Schere mit Abfallschere
US3456775A (en) Batching apparatus
CN111389921B (zh) 热轧无头轧制剪压接连方法及其系统
US4102228A (en) Cutting apparatus
CN217616852U (zh) 一种电液组合式分钢装置
JPS59110415A (ja) 連続して搬送される定尺圧延材を移送するための冷却床前の移送装置
CN216461646U (zh) 一种连铸机提升转向出坯装置
CN107350545A (zh) 一种彩图板成型及输送生产线
CN112110127B (zh) 一种锻造自动化输送物料系统
CN109822386B (zh) 用于金属板材切割生产线的辊道送料装置及辊道传送系统
US2796780A (en) Conveying and cooling apparatus
CN216105204U (zh) 一种联合剪切线用分别摞垛装置
EP0267770A1 (de) Bremseinrichtung für Warmwalzgut
JPS5844882Y2 (ja) 冷却床ランインテ−ブル
JPH08309423A (ja) 長尺被圧延材の残余端部を搬送する際に冷却床上で強制的に制動するための方法および装置
US3545590A (en) Conveying system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19860310

17Q First examination report despatched

Effective date: 19870921

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB LI LU NL SE

REF Corresponds to:

Ref document number: 37998

Country of ref document: AT

Date of ref document: 19881115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3565639

Country of ref document: DE

Date of ref document: 19881124

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890228

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: MANNESMANN AKTIENGESELLSCHAFT

Effective date: 19890624

26 Opposition filed

Opponent name: KOCKS TECHNIK GMBH & CO.

Effective date: 19890710

Opponent name: MANNESMANN AKTIENGESELLSCHAFT

Effective date: 19890624

NLR1 Nl: opposition has been filed with the epo

Opponent name: MANNESMANN AG

NLR1 Nl: opposition has been filed with the epo

Opponent name: KOCKS TECHNIK GMBH & CO.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900111

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19900205

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19900214

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19900216

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19900227

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19900228

Year of fee payment: 6

Ref country code: GB

Payment date: 19900228

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19900313

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900330

Year of fee payment: 6

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19900312

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLR2 Nl: decision of opposition
EUG Se: european patent has lapsed

Ref document number: 85200174.2

Effective date: 19900808