EP0264145A1 - Câble plat pour le renforcement de pneumatiques - Google Patents

Câble plat pour le renforcement de pneumatiques Download PDF

Info

Publication number
EP0264145A1
EP0264145A1 EP87201615A EP87201615A EP0264145A1 EP 0264145 A1 EP0264145 A1 EP 0264145A1 EP 87201615 A EP87201615 A EP 87201615A EP 87201615 A EP87201615 A EP 87201615A EP 0264145 A1 EP0264145 A1 EP 0264145A1
Authority
EP
European Patent Office
Prior art keywords
steel
core
layer
cord
section
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
EP87201615A
Other languages
German (de)
English (en)
Other versions
EP0264145B1 (fr
Inventor
Luc Bourgois
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.)
Bekaert NV SA
Original Assignee
Bekaert NV SA
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
Application filed by Bekaert NV SA filed Critical Bekaert NV SA
Priority to AT87201615T priority Critical patent/ATE70578T1/de
Publication of EP0264145A1 publication Critical patent/EP0264145A1/fr
Application granted granted Critical
Publication of EP0264145B1 publication Critical patent/EP0264145B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/2002—Wires or filaments characterised by their cross-sectional shape
    • D07B2201/2003—Wires or filaments characterised by their cross-sectional shape flat
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2016—Strands characterised by their cross-sectional shape
    • D07B2201/2018—Strands characterised by their cross-sectional shape oval
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2023—Strands with core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2048—Cores characterised by their cross-sectional shape
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2059—Cores characterised by their structure comprising wires
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2095—Auxiliary components, e.g. electric conductors or light guides
    • D07B2201/2097—Binding wires
    • D07B2201/2098—Binding wires characterized by special properties or the arrangements of the binding wire
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/20—Type of machine
    • D07B2207/209—Tubular strander
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/4072—Means for mechanically reducing serpentining or mechanically killing of rope
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2046—Tire cords

Definitions

  • This invention relates to cords adapted for the reinforcement of pneumatic tires and more particularly to cords for use as reinforcing elements for the carcass and the belt structure of pneumatic radial tires, especially pneumatic radial truck tires.
  • Pneumatic vehicle tires are generally reinforced with steel cords having substantailly round cross-sections.
  • a plurality of single filaments or strands are twisted together to form such a cord.
  • substantially round cross-sections is meant cross-sections where the enveloping curve is approximatively a circle.
  • Flat wires for the reinforcement of pneumatic tires have an improved lateral stiffness, require a thinner rubber ply, have a better compression performance and a greater elongation at break than cords having substantially round cross-sections ; however the latter have a better tensile strength and better fatigue performance than flat wires.
  • the invention provides a cord, with an elongated cross-section, adapted for the reinforcement of plies in a pneumatic tire, comprising a layer of steel filaments that are wound around a core, the core having a tensile strength of at least 1800 N/mm2 and an elongation at rupture of at least 2 per cent, characterized in that the core is an untwisted monofilament which has an elongated cross-section, preferably a substantially rectangular cross-section, and a breadth-to-thickness ratio of at least 2.
  • an elongated cross-section is meant a cross-section that is not round and where the longest axis is at least 1.5 times the length of the shortest axis.
  • plies in a pneumatic tire is meant the carcass and the belt reinforcement structure.
  • a layer of steel filaments around a core is meant a plurality of filaments disposed side by side so as to form around said core a sheath of a thickness equal to the diameter of a filament.
  • a substantially rectangular cross-section is meant a cross-section with two rectilinear parallel long sides. The extremities of these long sides are connected to each other by two short sides, which are not necessarily rectilinear. Rectangular cross-sections with rounded edges are also substantailly rectangular cross-sections.
  • the longest cross-sectional dimension (for a rectilinear cross-section), the maximum distance between the two short sides, measured along a line parallel to the long sides, is called the breadth
  • the minimum cross-sectional dimension (for a rectilinear cross-section the distance between the two long sides) is called the thickness.
  • the breadth-to-thickness ratio of the monofilament core is greater than 2, and, by preference, lies between 4 and 10.
  • a minimum breadth-to-thickness ratio is necessary to keep the cord in place during its manufacturing process.
  • the maximum ratio 10 is determined by stability considerations.
  • the monofilament core has an elongation at rupture of at least 2 per cent, and, by preference, lies between 2.5 and 3.3 per cent. A core with an elongation at rupture of less than 2 per cent is too crisp.
  • the monofilament core has a tensile strength of at least 1800 N/mm2 in order to give the whole cord a sufficient strength.
  • the monofilament core can be preferably made of steel.
  • a cord adapted for the reinforcement in a pneumatic tire means that the steel filaments of the layer conveniently have a carbon content between 0.70 and 0.90 per cent by weight, a tensile strength between 2700 N/mm2 and 3500 N/mm2 or even more, by preference between 2900 and 3400 N/mm2, and a coating that favours the adhesion to rubber, for example brass.
  • Said steel filaments can have by preference a round cross-section with a diameter suitably between 0.12 and 0.40 mm, by preference between 0.175 and 0.300 mm, but they can also have a substantially rectangular cross-section with a breadth-to-thickness ratio between 1.3 and 4. If said steel filaments have a substantially rectangular cross-section, then the long sides of the cross-section of the steel filaments will lie parallel to the nearest touching line of the cross-section of the core.
  • the pitch of the steel filaments is expressed as p, the axial distance required to make a 360 degree revolution of a steel filament of the layer. If the steel filaments are wound in the S-direction p is positive, if the steel filaments are wound in the Z-direction p is negative.
  • the layer of steel filaments may be surrounded by a second layer of steel filaments.
  • the pitch of the steel filaments in the second layer may be the same as, or different from, the pitch of the first layer.
  • a steel filament can be wrapped helicoidally around the layer (or outer layer where there is more than one layer) of steel filaments with a pitch q different from the pitch of the steel filaments in the layer (or outer layer).
  • the wrapped helicoid filament is not necessarily a round steel filament with a high carbon content, but can also be a filament with a carbon content of e.g. less than 0.20 per cent by weight, or a filament with a flat or oval shape.
  • the invention provides a "hybrid" structure : elements having different cross-sections are combined.
  • the core has an elongated and substantially rectangular cross-section.
  • the steel filaments have a round cross-section or a substantially rectangular cross-section with a breadth-to-thickness ratio which is smaller than the breadth-to-thickness ratio of the core.
  • the fatigue resistance of the steel filaments is greater than that of the core ; however, in a cord adapted for the reinforcement of a pneumatic tire the core requires less fatigue resistance than the layers. Thus the fatigue performance of the entire cord is not weakened by the comparatively small fatigue resistance of the core.
  • the steel filaments in the layer or in the layers around the core have, by preference, line contacts with the adjoining filaments. This has the advantage that loads are spread over all the filaments.
  • the distance from the steel filaments in the layer or in the layers to the central long axis of the structure is small in comparison with the distance from the steel filaments to the center in steel cords having a substantially round cross-section and having the same cross-section surface as the cord of the invention. This results in smaller tensile and compressive tensions in the filaments of the layer of the cord according to the invention.
  • the proposed structure is also flexible to deformations perpendicular to the plane of the core. This means that the stiffness in the plane perpendicular to the plane of the core is small. Due to the elongated and preferably substantially rectangular cross-section of the core, the stiffness in the plane of the core, however, is great. Consequently the cord accor ding to the invention has a stiffness which is advantageous for its use in pneumatic radial tires.
  • the cords according to the invention may be used in the carcass or in the belt structure of pneumatic radial tires, and are particularly useful for use in truck tires. In both applications the long side of the cross-section of the cord is parallel to the surface of the tire.
  • FIG. 1 illustrates a cross-section of a cord according to the invention.
  • the monofilament core (1) is made of steel. It has a breadth X of 1 mm and a thickness Y of 0.25 mm.
  • the breadth-to-thickness ratio X/Y is 4. Twelve steel filaments (2) with a diameter of 0.25 mm are wound with pitch p of 18 mm in the S-direction around the monofilament core (1).
  • a steel filament (3) with an original diameter of 0.15 mm is wrapped around the layer of steel filaments (2) in the Z-direction with a pitch q of -3.5 mm.
  • [1.25x0.25] + 14x0.25 + 1x0.15 ; /18 S / 3.5 Z.
  • the last example has particularly good rubber penetration.
  • Figure 4 illustrates apparatus for manufacturing a cord according to the invention.
  • the steel filaments (2) are wound around the monofilament core (1) by a tubular stranding machine (4) at the forming die (5).
  • a steel filament (3) is wrapped around the cord at (6).
  • the cord then passes through a pair of grooved rollers (7), and, eventually, through a straightener (8), before it is wound up on a drum (9).
  • the monofilament core (1) of the cord is supplied by a spool (41) with a horizontal axle.
  • the steel filaments (2) of the layer have a round cross-section or, at least, have a breadth-to-thickness ratio that is lower than the breadth-to-thickness ration of the monofilament core. Consequently the steel filaments (2) need not be delivered from spools with horizontal axles.
  • the delivering spools (42) of the steel filaments (2) may have vertical axles.
  • the forming die (5) must have a profile that is adapted to the profile of the cross-section of the steel cord to be formed. Figurae 5 illustrates the cross-section of the forming die (5).
  • the grooves of the rollers (7) and of the rollers (81) of the straightener (8) also have an adapted profile as illustrated in Figure 6.
  • the cord according to the invention is pressed together in the rollers (7). If the cord is provided with a filament (3) made of low carbon steel, the rollers (7) subject the filament (3) to plastic deformation, as can be seen on Figures 1 and 2.
  • a straightener (8) can be used to diminish the torsion of the steel cord. Such a straightener is disclosed in GB patent 2.092.629.
  • the tensile strength is the breaking load of a filament per unit of unstrained cross-sectional area expressed in Newtons per square millimetre.
  • the elongation at rupture is the increase in length, which results from subjecting the cord to the breaking force in a tensile test and is expressed as a percentage of the initial length of the cord measured under a defined pre-tension.
  • the cord is embedded in the center of a rubber cylinder with a diameter of 30 mm and a height of 48.25 mm and submitted to an axial compression force.
  • a force versus deformation diagram is recorded.
  • the compression modulus is defined as the secant modulus at a specified axial stress and can be derived from the diagram.
  • a transverse impact test method for (steel) cord was developed to determine the resistance to cutting with a view to their use as tire belt reinforcement (puncture resistance).
  • the test consists in a modified "charpy test" adapted with a sharp knife.
  • the sample is a rubber cylinder with a 3 mm diameter, reinforced in the center with a steel cord.
  • the total amount of absorbed energy is measured and is expressed in energy per unit cross-sectional area (Joule/mm2).
  • the tensile strength of the cord according to the invention is lower than the tensile strength of existing steel cords 1 - 4 with substantially round cross-sections but greater than the tensile strength of flat wires with substantially rectangular cross-section, the tensile strength of flat steel wires lying usually between 1800 N/mm2 and 2400 N/mm2.
  • the elongation at rupture of the cord according to the invention is equal or greater than the elongation at rupture of steel cords 1 to 4.
  • the cord according to the invention has better compression performance than the steel cords 1 to 4, as can be seen from the higher compression modulus and compression stress.
  • the cord according to the invention is compara ble with the existing steel cords 1-4 regarding impact properties, in spite of a lower tensile strength.

Landscapes

  • Ropes Or Cables (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Tires In General (AREA)
  • Tyre Moulding (AREA)
  • Supports For Plants (AREA)
EP87201615A 1986-10-13 1987-08-27 Câble plat pour le renforcement de pneumatiques Expired EP0264145B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87201615T ATE70578T1 (de) 1986-10-13 1987-08-27 Flaches seil zur verstaerkung von luftreifen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868624529A GB8624529D0 (en) 1986-10-13 1986-10-13 Flat cord for tyres
GB8624529 1986-10-13

Publications (2)

Publication Number Publication Date
EP0264145A1 true EP0264145A1 (fr) 1988-04-20
EP0264145B1 EP0264145B1 (fr) 1991-12-18

Family

ID=10605675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87201615A Expired EP0264145B1 (fr) 1986-10-13 1987-08-27 Câble plat pour le renforcement de pneumatiques

Country Status (8)

Country Link
EP (1) EP0264145B1 (fr)
JP (1) JPS63135584A (fr)
AT (1) ATE70578T1 (fr)
AU (1) AU586934B2 (fr)
BR (1) BR8705416A (fr)
DE (1) DE3775330D1 (fr)
GB (1) GB8624529D0 (fr)
TR (1) TR23356A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1059380A2 (fr) * 1999-06-03 2000-12-13 Hongduk Steel Cord Co., Ltd. Câble d'acier pour le renforcement des articles en caoutchouc, procédé et dispositif pour la fabrication de tels câbles
EP1063346A2 (fr) * 1999-06-23 2000-12-27 Bridgestone Corporation Câble d'acier pour le renforcement des articles en caoutchouc, pneumatique, procédé et machine pour la fabrication des câbles d'acier
WO2010086043A1 (fr) * 2009-01-28 2010-08-05 Nv Bekaert Sa Fil plat serti comme coeur de fil ovale
WO2011029679A1 (fr) 2009-09-11 2011-03-17 Nv Bekaert Sa Câble d'acier ovale constitué de fils ovales
CN103597138A (zh) * 2011-06-10 2014-02-19 贝卡尔特公司 包括扁平钢丝的钢丝帘线

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1041194B1 (fr) * 1997-09-25 2006-01-04 Bridgestone Corporation Cable d'acier et son procede de fabrication et pneumatique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1774748A (en) * 1928-07-05 1930-09-02 Gore Thomas Reenforcing element for the beads of automobile shoes
FR2369106A1 (fr) * 1976-10-28 1978-05-26 Hahn & Co Kg Bandage pneumatique
JPS5370002U (fr) * 1976-11-12 1978-06-12
DE2941541A1 (de) * 1979-10-13 1981-04-23 Continental Gummi-Werke Ag, 3000 Hannover Drahtseil als verstaerkungselement fuer gummi- oder kunststoffartikel
FR2472040A1 (fr) * 1979-12-18 1981-06-26 Bridgestone Tire Co Ltd Pneumatique a carcasse radiale
EP0125518A2 (fr) * 1983-05-16 1984-11-21 Akzo Patente GmbH Câblé pour le renforcement d'articles élastomères
EP0125517A2 (fr) * 1983-05-16 1984-11-21 Akzo GmbH Câblé de renforcement à fil de guipage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1774748A (en) * 1928-07-05 1930-09-02 Gore Thomas Reenforcing element for the beads of automobile shoes
FR2369106A1 (fr) * 1976-10-28 1978-05-26 Hahn & Co Kg Bandage pneumatique
JPS5370002U (fr) * 1976-11-12 1978-06-12
DE2941541A1 (de) * 1979-10-13 1981-04-23 Continental Gummi-Werke Ag, 3000 Hannover Drahtseil als verstaerkungselement fuer gummi- oder kunststoffartikel
FR2472040A1 (fr) * 1979-12-18 1981-06-26 Bridgestone Tire Co Ltd Pneumatique a carcasse radiale
EP0125518A2 (fr) * 1983-05-16 1984-11-21 Akzo Patente GmbH Câblé pour le renforcement d'articles élastomères
EP0125517A2 (fr) * 1983-05-16 1984-11-21 Akzo GmbH Câblé de renforcement à fil de guipage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RESEARCH DISCLOSURE, no. 184, August 1979, pages 430,431, no. 18441, Industrial opportunities ltd, homewell havant, Hampshire, GB; "Rubber articles reinforced with high tensile steel cord" *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1059380A2 (fr) * 1999-06-03 2000-12-13 Hongduk Steel Cord Co., Ltd. Câble d'acier pour le renforcement des articles en caoutchouc, procédé et dispositif pour la fabrication de tels câbles
EP1059380A3 (fr) * 1999-06-03 2001-10-10 Hongduk Steel Cord Co., Ltd. Câble d'acier pour le renforcement des articles en caoutchouc, procédé et dispositif pour la fabrication de tels câbles
EP1063346A2 (fr) * 1999-06-23 2000-12-27 Bridgestone Corporation Câble d'acier pour le renforcement des articles en caoutchouc, pneumatique, procédé et machine pour la fabrication des câbles d'acier
EP1063346A3 (fr) * 1999-06-23 2001-10-24 Bridgestone Corporation Câble d'acier pour le renforcement des articles en caoutchouc, pneumatique, procédé et machine pour la fabrication des câbles d'acier
WO2010086043A1 (fr) * 2009-01-28 2010-08-05 Nv Bekaert Sa Fil plat serti comme coeur de fil ovale
WO2011029679A1 (fr) 2009-09-11 2011-03-17 Nv Bekaert Sa Câble d'acier ovale constitué de fils ovales
CN103597138A (zh) * 2011-06-10 2014-02-19 贝卡尔特公司 包括扁平钢丝的钢丝帘线
CN103597138B (zh) * 2011-06-10 2016-02-03 贝卡尔特公司 包括扁平钢丝的钢丝帘线

Also Published As

Publication number Publication date
BR8705416A (pt) 1988-05-24
EP0264145B1 (fr) 1991-12-18
AU7930387A (en) 1988-04-14
JPS63135584A (ja) 1988-06-07
GB8624529D0 (en) 1986-11-19
DE3775330D1 (de) 1992-01-30
TR23356A (tr) 1989-12-19
ATE70578T1 (de) 1992-01-15
AU586934B2 (en) 1989-07-27

Similar Documents

Publication Publication Date Title
EP1036235B1 (fr) Corde d'acier a elements ondules
EP0168858B1 (fr) Câblé d'acier compact à résistance à la rupture améliorée
EP0602733B1 (fr) Câble d'acier à plusieurs torons
EP0373595B1 (fr) Câble en acier pour le renforcement de caoutchouc
US4947636A (en) Metal wire cord for elastomer reinforcement
EP0399795B1 (fr) Pneumatiques à carcasse radiale
EP1000194B1 (fr) Cable d'acier pour plis de protection de pneumatiques
US5285623A (en) Steel cord with improved fatigue strength
US6748731B2 (en) Tire cord
US7066229B2 (en) Pneumatic tire
EP0264145B1 (fr) Câble plat pour le renforcement de pneumatiques
US6425428B1 (en) Steel cord having flat side surface portion, method of manufacturing same, and pneumatic tire reinforced with same
JPH0673672A (ja) ゴム補強用スチールコード
JP2000192379A (ja) ゴム物品補強用スチ―ルコ―ド
JP3213698B2 (ja) スチールコード及びスチールラジアルタイヤ
EP0466720B1 (fr) Cable metallique a resistance a la fatigue amelioree
JPH11124782A (ja) スチールコード及びスチールラジアルタイヤ
JP3576667B2 (ja) ゴム物品補強用スチールコードおよび空気入りタイヤ
JP3576668B2 (ja) ゴム物品補強用スチールコードおよび空気入りタイヤ
JPH11350367A (ja) スチールコード及びスチールラジアルタイヤ
JPS5884625A (ja) スチ−ルコ−ドの製造方法
JPH08127987A (ja) タイヤ用のコード
JPH09188981A (ja) ゴム物品補強用スチールコードおよび空気入りタイヤ
JPH09176974A (ja) ゴム物品補強用スチールコードおよび空気入りタイヤ
JPH05294109A (ja) 空気入りラジアルタイヤ

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

Kind code of ref document: A1

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

17P Request for examination filed

Effective date: 19880902

17Q First examination report despatched

Effective date: 19900702

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 ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19911218

Ref country code: NL

Effective date: 19911218

Ref country code: LI

Effective date: 19911218

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19911218

Ref country code: CH

Effective date: 19911218

Ref country code: AT

Effective date: 19911218

REF Corresponds to:

Ref document number: 70578

Country of ref document: AT

Date of ref document: 19920115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3775330

Country of ref document: DE

Date of ref document: 19920130

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19920329

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940602

Year of fee payment: 8

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

Ref country code: LU

Payment date: 19940630

Year of fee payment: 8

EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950512

Year of fee payment: 9

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: 19950827

Ref country code: GB

Effective date: 19950827

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950827

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

Ref country code: BE

Payment date: 19960612

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19960613

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970430

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

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

Effective date: 19970831

BERE Be: lapsed

Owner name: S.A. BEKAERT N.V.

Effective date: 19970831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

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

Effective date: 19980501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

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

Effective date: 20050827