EP1474566A1 - Compact steel cord - Google Patents

Compact steel cord

Info

Publication number
EP1474566A1
EP1474566A1 EP02792969A EP02792969A EP1474566A1 EP 1474566 A1 EP1474566 A1 EP 1474566A1 EP 02792969 A EP02792969 A EP 02792969A EP 02792969 A EP02792969 A EP 02792969A EP 1474566 A1 EP1474566 A1 EP 1474566A1
Authority
EP
European Patent Office
Prior art keywords
filaments
diameter
intermediate layer
layer
steel cord
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
EP02792969A
Other languages
German (de)
French (fr)
Other versions
EP1474566B1 (en
Inventor
Dirk Meersschaut
Johan Pille
Stijn Vanneste
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 EP02792969A priority Critical patent/EP1474566B1/en
Publication of EP1474566A1 publication Critical patent/EP1474566A1/en
Application granted granted Critical
Publication of EP1474566B1 publication Critical patent/EP1474566B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D07B2201/2006—Wires or filaments characterised by a value or range of the dimension given
    • 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
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D07B2201/2025—Strands twisted characterised by a value or range of the pitch parameter given
    • 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
    • D07B2201/2024—Strands twisted
    • D07B2201/2027—Compact winding
    • D07B2201/2028—Compact winding having the same lay direction and lay pitch
    • 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
    • D07B2201/2036—Strands characterised by the use of different wires or filaments
    • D07B2201/2037—Strands characterised by the use of different wires or filaments regarding the dimension of the wires or filaments
    • 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
    • D07B2201/2038—Strands characterised by the number of wires or filaments
    • D07B2201/204—Strands characterised by the number of wires or filaments nine or more wires or filaments respectively forming multiple layers
    • 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
    • D07B2201/2051—Cores characterised by a value or range of the dimension given
    • 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
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2046—Tyre cords

Definitions

  • the present invention relates to a steel cord adapted for the reinforcement of elastomer products.
  • the steel cord comprises a core filament with a core filament diameter and layer filaments twisted around the core filament in the same direction and with the same step.
  • 9d/ CC is a compact cord comprising three core filaments with a core filament diameter d c and nine layer filaments with a layer filament diameter d/.
  • the core filament diameter d c is somewhat greater than the layer filament d .
  • 18xd/ CC is a compact cord comprising one core filament with a core filament diameter d c and eighteen layer filaments with a layer filament diameter d , arranged in an intermediate layer of six filaments and an outer layer of twelve filaments.
  • Such a compact cord is disclosed in EP-B1-0 627 520. Both compact cords constitute stable constructions and may be used to reinforce the carcass plies of medium to heavy truck and bus radial tires.
  • 18xd CC construction with its nineteen filaments is used for the higher breaking loads and a 3xd c
  • the required breaking load is then met by a suitable choice of the filament diameters d c and d;.
  • d c and d By varying the diameters it is technically possible to cover such a broad range of breaking loads so that the carcass plies of practically all current medium and heavy truck and bus radial tires can be reinforced. Although such a broad range is technically possible, it is, however, not always technically desirable. Increasing the filament diameters in order to obtain higher breaking loads results in decreasing values of fatigue resistance. So the filament diameter range has an upper limit due to technical reasons.
  • a steel cord adapted for the reinforcement of elastomer products.
  • the steel cord comprises a core filament with a core filament diameter d c and 3N layer filaments twisted around said core filament in the same direction and with the same step.
  • N ranges from four to five.
  • the 3N layer filaments are arranged in an intermediate layer of N intermediate layer filaments and in an outer layer of 2N outer layer filaments.
  • the layer filaments in the intermediate layer have an intermediate layer diameter d,.
  • the core filament diameter d c is smaller than the intermediate layer diameter d ; .
  • This invention cord is a compact cord.
  • the cord has a good fretting behavior, a high breaking load per unit of cross-section and a small diameter.
  • the cord has a symmetric stable construction. It has thirteen to sixteen filaments and fills in the gap between the 3xd c
  • the steel cord is adapted for the reinforcement of elastomer products, which means that it has a steel composition along the following lines : a minimum carbon content of 0.60 % (e.g. at least 0.80 %, or at least 0.92 % with a maximum of 1.2 %), a manganese content ranging from 0.20 to 0.90 % and a silicon content ranging from 0.10 to 0.90 % ; the sulphur and phosphorous contents are each preferably kept below 0.03 % ; additional elements such as chromium (up to 0.2 a 0.4 %), boron, copper, cobalt, nickel, vanadium ... may be added to the composition in order to minimize the amount of deformation needed to obtain a predetermined tensile strength.
  • the steel filaments are generally covered with a coating layer to increase the resistance against corrosion or to enhance the adhesion with rubber.
  • This coating may be a chemical primer or may be a metallic coating. The exact type of coating depends upon the eventual application.
  • Corrosion resistant coatings are zinc or a zinc aluminum alloy.
  • Adhesion coatings are brass in the case of rubber, or a so-called ternary brass such as copper-zinc- nickel (e.g. 64% / 35.5% / 0.5%) and copper-zinc-cobalt (e.g. 64% / 35.7% / 0.3%), or a copper-free adhesion layer such as zinc-cobalt or zinc-nickel.
  • the final diameters of the steel filaments range from 0.05 mm to 0.60 mm.
  • the filament diameters preferably range from 0.05 mm to 0.35 mm.
  • N is preferably equal to five, which means that the steel cord comprises sixteen filaments. Five is preferred to four since five filaments in the intermediate layer fill more the intermediate layer in a stable way.
  • the core filament diameter d c is greater than the diameter of a circle tangent to each of the cross-sections of the intermediate layer filaments in the hollow space that remains free when their cross-sections have the highest packing density.
  • all 3N layer filaments i.e. all N intermediate layer filaments and all 2N outer layer filaments have a same intermediate layer filament diameter d,.
  • This first preferable embodiment may be summarized by following formula : 1xd c
  • This first embodiment has the advantage that only two different filament diameters are required.
  • the outer layer of 2N filaments has N filaments facing two intermediate layer filaments with a diameter equal to the intermediate layer diameter d, and has N filaments facing only one intermediate layer filament with a diameter smaller than the intermediate layer diameter d,-.
  • This second embodiment has the advantage of a so-called Warrington construction with a round cross-section.
  • FIGURE 1 is a cross-section of a first embodiment of a steel cord according to the invention
  • FIGURE 2 is an explanatory drawing
  • FIGURE 3 is a cross-section of a second embodiment of a steel cord according to the invention.
  • FIGURE 1 shows a cross-section of a first embodiment of a steel cord 10.
  • the steel cord comprises a core filament 12 with a core filament diameter d c .
  • Five intermediate layer filaments 14 form an intermediate layer around core filament 12.
  • the intermediate layer filaments have a diameter d ; .
  • Ten outer layer filaments 16 form an outer layer around the intermediate layer.
  • the outer layer filaments 16 also have the same intermediate layer filament diameter d,-. All intermediate layer filaments 14 and all outer layer filaments 16 are twisted in the same twisting direction and with the same twisting step so that a compact configuration is formed.
  • the cross-section has the typical form of a pentagon.
  • the core filament diameter d c is smaller than the intermediate layer filament diameter d ; .
  • the core filament diameter d c is greater than the diameter of a circle 15 tangent to each of the cross-sections of the intermediate layer filaments 16 in the hollow space that remains free when their cross-sections have the highest packing density.
  • a suitable example of a cord according to the first embodiment of the invention is :
  • FIGURE 3 shows a cross-section of a second embodiment of the steel cord 20 according to the invention.
  • the steel cord 20 comprises a core filament 22.
  • Five intermediate layer filaments 24 with an intermediate layer filament d, have been twisted around the core filament 22.
  • An outer layer of outer layer filaments 26, 28 is formed around the intermediate layer.
  • those five outer layer filaments 26 facing two intermediate layer filaments 24 have a diameter equal to said intermediate layer diameter d,.
  • Five outer layer filaments 28 facing only one intermediate layer filament 24 have a diameter smaller than the intermediate layer diameter d,.
  • the cross-section has a round form.
  • the steel cord can be carried out in various tensile versions, ranging from a normal tensile strength to an ultra high tensile strength.
  • the steel cords according to the invention can be manufactured by means of a tubular twisting machine or preferably by means of a double- twisting device.
  • both embodiments may be provided or not with a wrapping filament wrapped around the other filaments.
  • the non wrapped version is preferred.
  • non sleeving of the steel cord may be obtained by suitably preforming the outer layer steel filaments so that the outer layer filaments exert a force which is directed radially inward. Such a preforming is disclosed in EP- B1-0 627 520.
  • Table 1 hereunder summarizes some properties measured on steel cords according to the first embodiment of the present invention.
  • PLE or part load elongation expresses the elongation at very small loads below 50 Newton.

Landscapes

  • Ropes Or Cables (AREA)

Abstract

A steel cord (10) adapted for the reinforcement of elastomer products, comprises a core filament (12) with a core filament diameter and 3N layer filaments (14, 16) twisted around the core filament (12) in the same direction and with the same step. N ranges from four to five. The 3N layer filaments are arranged in an intermediate layer of N filaments (14) and in an outer layer of 2N filaments (16). The layer filaments (14) in the intermediate layer have an intermediate layer diameter. The core filament diameter is smaller than the intermediate layer diameter.

Description

COMPACT STEEL CORD
Field of the invention. The present invention relates to a steel cord adapted for the reinforcement of elastomer products. The steel cord comprises a core filament with a core filament diameter and layer filaments twisted around the core filament in the same direction and with the same step.
Background of the invention.
Steel cords where all the steel filaments are twisted in the same direction and with the same step are known in the art and are often referred to as "compact steel cords" since they may lead to a compact cross-sectional configuration with a high amount of steel within a limited cross-sectional surface area.
Within the group of compact steel cords, following configurations are widely used in the art of elastomer reinforcement :
- 3xdc [ 9xd/ CC
- 1xd0 | 18xd CC A 3xdc | 9d/ CC is a compact cord comprising three core filaments with a core filament diameter dc and nine layer filaments with a layer filament diameter d/. The core filament diameter dc is somewhat greater than the layer filament d . Such a compact cord is disclosed in US-A-4,788,815. A 1xdc | 18xd/ CC is a compact cord comprising one core filament with a core filament diameter dc and eighteen layer filaments with a layer filament diameter d , arranged in an intermediate layer of six filaments and an outer layer of twelve filaments. Such a compact cord is disclosed in EP-B1-0 627 520. Both compact cords constitute stable constructions and may be used to reinforce the carcass plies of medium to heavy truck and bus radial tires.
A 1xdc | 18xd CC construction with its nineteen filaments is used for the higher breaking loads and a 3xdc | 9xd/ CC construction with its twelve filaments is used for the lower breaking loads. The required breaking load is then met by a suitable choice of the filament diameters dc and d;. By varying the diameters it is technically possible to cover such a broad range of breaking loads so that the carcass plies of practically all current medium and heavy truck and bus radial tires can be reinforced. Although such a broad range is technically possible, it is, however, not always technically desirable. Increasing the filament diameters in order to obtain higher breaking loads results in decreasing values of fatigue resistance. So the filament diameter range has an upper limit due to technical reasons. Decreasing the filament diameters in order to obtain lower breaking loads is technically desirable since it results in increasing values of fatigue resistance. Decreasing the filament diameters, however, has also its limits, since further drawing of the high carbon steel filaments is expensive. So the filament diameter range has a lower limit due to economical reasons. Bearing in mind the lower and the upper limit, it is difficult, if not impossible with the two constructions 3xdc | 9xd CC and 1xdc | 18xd/ CC to cover the whole range of medium and heavy truck tires with technically and economically feasible steel cords.
Summary of the invention.
It is an object of the present invention to fill in the gap between the two constructions 3xdc | 9xd/ CC and 1xdc | 18xd/ CC. It is another object of the present invention to provide for a stable steel cord construction with an acceptable level of fatigue resistance.
It is a further object of the present invention to provide for a steel cord with a good fretting behavior.
According to the present invention there is provided a steel cord adapted for the reinforcement of elastomer products. The steel cord comprises a core filament with a core filament diameter dc and 3N layer filaments twisted around said core filament in the same direction and with the same step. N ranges from four to five. The 3N layer filaments are arranged in an intermediate layer of N intermediate layer filaments and in an outer layer of 2N outer layer filaments. The layer filaments in the intermediate layer have an intermediate layer diameter d,. The core filament diameter dc is smaller than the intermediate layer diameter d;.
This invention cord is a compact cord. The cord has a good fretting behavior, a high breaking load per unit of cross-section and a small diameter. The cord has a symmetric stable construction. It has thirteen to sixteen filaments and fills in the gap between the 3xdc | 9xd/ CC and 1 xdc | 18xd/ CC constructions.
The steel cord is adapted for the reinforcement of elastomer products, which means that it has a steel composition along the following lines : a minimum carbon content of 0.60 % (e.g. at least 0.80 %, or at least 0.92 % with a maximum of 1.2 %), a manganese content ranging from 0.20 to 0.90 % and a silicon content ranging from 0.10 to 0.90 % ; the sulphur and phosphorous contents are each preferably kept below 0.03 % ; additional elements such as chromium (up to 0.2 a 0.4 %), boron, copper, cobalt, nickel, vanadium ... may be added to the composition in order to minimize the amount of deformation needed to obtain a predetermined tensile strength. The steel filaments are generally covered with a coating layer to increase the resistance against corrosion or to enhance the adhesion with rubber. This coating may be a chemical primer or may be a metallic coating. The exact type of coating depends upon the eventual application. Corrosion resistant coatings are zinc or a zinc aluminum alloy. Adhesion coatings are brass in the case of rubber, or a so-called ternary brass such as copper-zinc- nickel (e.g. 64% / 35.5% / 0.5%) and copper-zinc-cobalt (e.g. 64% / 35.7% / 0.3%), or a copper-free adhesion layer such as zinc-cobalt or zinc-nickel. The final diameters of the steel filaments range from 0.05 mm to 0.60 mm. In case of reinforcement of carcass plies of tires, the filament diameters preferably range from 0.05 mm to 0.35 mm. N is preferably equal to five, which means that the steel cord comprises sixteen filaments. Five is preferred to four since five filaments in the intermediate layer fill more the intermediate layer in a stable way.
Preferably the core filament diameter dc is greater than the diameter of a circle tangent to each of the cross-sections of the intermediate layer filaments in the hollow space that remains free when their cross-sections have the highest packing density.
In a first preferable embodiment of the invention all 3N layer filaments, i.e. all N intermediate layer filaments and all 2N outer layer filaments have a same intermediate layer filament diameter d,. This first preferable embodiment may be summarized by following formula : 1xdc | 3Nxd, CC This first embodiment has the advantage that only two different filament diameters are required.
In a second preferable embodiment of the invention the outer layer of 2N filaments has N filaments facing two intermediate layer filaments with a diameter equal to the intermediate layer diameter d, and has N filaments facing only one intermediate layer filament with a diameter smaller than the intermediate layer diameter d,-.
This second embodiment has the advantage of a so-called Warrington construction with a round cross-section.
Brief description of the drawings.
The invention will now be described into more detail with reference to the accompanying drawings wherein - FIGURE 1 is a cross-section of a first embodiment of a steel cord according to the invention ; FIGURE 2 is an explanatory drawing ; FIGURE 3 is a cross-section of a second embodiment of a steel cord according to the invention.
Description of the preferred embodiments of the invention.
FIGURE 1 shows a cross-section of a first embodiment of a steel cord 10. The steel cord comprises a core filament 12 with a core filament diameter dc. Five intermediate layer filaments 14 form an intermediate layer around core filament 12. The intermediate layer filaments have a diameter d;. Ten outer layer filaments 16 form an outer layer around the intermediate layer. The outer layer filaments 16 also have the same intermediate layer filament diameter d,-. All intermediate layer filaments 14 and all outer layer filaments 16 are twisted in the same twisting direction and with the same twisting step so that a compact configuration is formed. The cross-section has the typical form of a pentagon.
The core filament diameter dc is smaller than the intermediate layer filament diameter d;.
Referring to FIGURE 2, the core filament diameter dc is greater than the diameter of a circle 15 tangent to each of the cross-sections of the intermediate layer filaments 16 in the hollow space that remains free when their cross-sections have the highest packing density. A suitable example of a cord according to the first embodiment of the invention is :
1x0.14 | 15x0.175 CC twisting step = 11 mm twisting direction = S Other examples are : 1x0.175 | 15x0.22 CC
1x0.16 | 15x0.20 CC 1x0.13 | 15x0.16 CC 1x0.10 | 15x0.13 CC
FIGURE 3 shows a cross-section of a second embodiment of the steel cord 20 according to the invention. The steel cord 20 comprises a core filament 22. Five intermediate layer filaments 24 with an intermediate layer filament d, have been twisted around the core filament 22. An outer layer of outer layer filaments 26, 28 is formed around the intermediate layer. Of the outer layer filaments 26, 28, those five outer layer filaments 26 facing two intermediate layer filaments 24 have a diameter equal to said intermediate layer diameter d,. Five outer layer filaments 28 facing only one intermediate layer filament 24 have a diameter smaller than the intermediate layer diameter d,. In contrast with FIGURE 1 , the cross-section has a round form.
Depending upon the steel composition used and upon the degree of final drawing, the steel cord can be carried out in various tensile versions, ranging from a normal tensile strength to an ultra high tensile strength.
The steel cords according to the invention can be manufactured by means of a tubular twisting machine or preferably by means of a double- twisting device.
Both embodiments may be provided or not with a wrapping filament wrapped around the other filaments. However, for use in carcass plies, the non wrapped version is preferred. In this non wrapped version, non sleeving of the steel cord may be obtained by suitably preforming the outer layer steel filaments so that the outer layer filaments exert a force which is directed radially inward. Such a preforming is disclosed in EP- B1-0 627 520.
Table 1 hereunder summarizes some properties measured on steel cords according to the first embodiment of the present invention. Table 1
0.14 15 x 0.175 CC
embedded
Compression test σk = Rk MPa 172 257
Wk % 0,88 1 ,28
E compression modulus MPa 6066 7316
Taber stiffness test Not embedded
M0 TSU 27,6 31
M0' TSU 1 ,9 1 ,5
Ek MPa 171 196
V % 93 95
Taber stiffness test Embedded
M0 TSU 14,5 13,2 o' TSU 1 ,5 1 ,2
Ek MPa 431 398
V % 90 91
Three Roller Fatigue test
Number of cycli before 20006 30166 fracture
PLE or part load elongation expresses the elongation at very small loads below 50 Newton.
Information about the Taber stiffness test, the three point bending test, and the compression test can be read from L. BOURGOIS, Survey of Mechanical Properties of Steel Cord and Related Test Methods, Special Technical Publication 694, ASTM, 1980.

Claims

1. A steel cord adapted for the reinforcement of elastomer products, said steel cord comprising a core filament with a core filament diameter and 3N layer filaments twisted around said core filament in the same direction and with the same step, N ranging from four to five, said 3N layer filaments being arranged in an intermediate layer of N filaments and in an outer layer of 2N filaments, the layer filaments in said intermediate layer having an intermediate layer diameter, wherein said core filament diameter is smaller than said intermediate layer diameter.
2. A steel cord according to claim 1 , wherein N equals five.
3. A steel cord according to any one of the preceding claims, wherein said core filament diameter is greater than the diameter of a circle tangent to each of the cross-sections of the intermediate layer filaments in the hollow space that remains free when their cross- sections have the highest packing density.
4. A steel cord according to any one of the preceding claims, wherein all 3N layer filaments have said same intermediate layer diameter.
5. A steel cord according to any one of claims 1 to 3, wherein said outer layer of 2N filaments has N filaments facing two intermediate layer filaments and having a diameter equal to said intermediate layer diameter and N filaments facing only one intermediate layer filament and having a diameter smaller than said intermediate layer diameter.
EP02792969A 2002-02-14 2002-12-03 Compact steel cord Expired - Lifetime EP1474566B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02792969A EP1474566B1 (en) 2002-02-14 2002-12-03 Compact steel cord

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02100137 2002-02-14
EP02100137 2002-02-14
PCT/EP2002/014077 WO2003069055A1 (en) 2002-02-14 2002-12-03 Compact steel cord
EP02792969A EP1474566B1 (en) 2002-02-14 2002-12-03 Compact steel cord

Publications (2)

Publication Number Publication Date
EP1474566A1 true EP1474566A1 (en) 2004-11-10
EP1474566B1 EP1474566B1 (en) 2006-07-26

Family

ID=27675738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02792969A Expired - Lifetime EP1474566B1 (en) 2002-02-14 2002-12-03 Compact steel cord

Country Status (6)

Country Link
EP (1) EP1474566B1 (en)
AT (1) ATE334251T1 (en)
AU (1) AU2002358672A1 (en)
DE (1) DE60213473T2 (en)
ES (1) ES2269799T3 (en)
WO (1) WO2003069055A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101433985B1 (en) * 2006-12-29 2014-08-25 엔브이 베카에르트 에스에이 Single lay steel cord for elastomer reinforcement
CN103298996B8 (en) * 2011-01-10 2019-12-03 贝卡尔特公司 compact steel cord
EA024603B9 (en) * 2011-01-10 2018-04-30 Нв Бекаэрт Са Compact steel cord

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627520B1 (en) * 1993-06-02 1998-12-02 N.V. Bekaert S.A. Compact steel cord with no wrapping filament
EP0675223A1 (en) * 1994-03-24 1995-10-04 N.V. Bekaert S.A. Layered steel cord construction
AU3366701A (en) * 1999-12-30 2001-07-16 Michelin Recherche Et Technique S.A. Multilayer steel cable for a tire carcass

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03069055A1 *

Also Published As

Publication number Publication date
AU2002358672A1 (en) 2003-09-04
ES2269799T3 (en) 2007-04-01
DE60213473D1 (en) 2006-09-07
DE60213473T2 (en) 2007-03-29
ATE334251T1 (en) 2006-08-15
WO2003069055A1 (en) 2003-08-21
EP1474566B1 (en) 2006-07-26

Similar Documents

Publication Publication Date Title
US7337604B2 (en) Hybrid high elongation cord
JP5716111B2 (en) Steel cord with wavefront elements
CA2196345C (en) Cord with high non-structural elongation
US7228681B2 (en) Open layered steel cord with high breaking load
EP0602733B1 (en) Multi-strand steel cord
KR960006935B1 (en) Heavy-load radial tire
US4947638A (en) Steel cord for reinforcing rubber
US8359823B2 (en) Steel cord for reinforcing tire
EP1000194B1 (en) Steel cord for protection plies of pneumatic tyres
EP2700746B1 (en) Rubber article-reinforcing steel cord and pneumatic tire
US20130032264A1 (en) Open off-the-road cord with preformed filaments
US6442922B1 (en) Tire-reinforcing steel cord and pneumatic radial tire using the same
US7089723B2 (en) Multi-layer steel cord where intermediate filaments are coated with a polymer
EP0290082A1 (en) Compact steel cord structure
EP0790349B1 (en) Steel cord with high elongation at break
US6962182B2 (en) Multi-layer steel cable for tire crown reinforcement
EP1474566B1 (en) Compact steel cord
US6766841B2 (en) Multi-layer steel cable for tire crown reinforcement
IE66749B1 (en) Reinforced transmission belt
EP0675223A1 (en) Layered steel cord construction
WO2002061201A1 (en) Steel rope with double corrosion protection on the steel wires

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

17P Request for examination filed

Effective date: 20040705

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MEERSSCHAUT, DIRK

Inventor name: VANNESTE, STIJN

Inventor name: PILLE, JOHAN

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

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

Ref country code: CZ

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: 20060726

Ref country code: FI

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: 20060726

Ref country code: BE

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: 20060726

Ref country code: NL

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: 20060726

Ref country code: AT

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: 20060726

Ref country code: SI

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: 20060726

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60213473

Country of ref document: DE

Date of ref document: 20060907

Kind code of ref document: P

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

Ref country code: BG

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: 20061026

Ref country code: SE

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: 20061026

Ref country code: DK

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: 20061026

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

Ref country code: PT

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: 20061226

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

Ref country code: MC

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

Effective date: 20061231

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2269799

Country of ref document: ES

Kind code of ref document: T3

EN Fr: translation not filed
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

Effective date: 20070427

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

Effective date: 20061203

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

Ref country code: GB

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

Effective date: 20061203

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

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: 20061027

Ref country code: FR

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: 20070511

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

Ref country code: EE

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: 20060726

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

Ref country code: TR

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: 20060726

Ref country code: LU

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

Effective date: 20061203

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

Ref country code: CY

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: 20060726

Ref country code: FR

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: 20060726

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

Ref country code: ES

Payment date: 20081226

Year of fee payment: 7

Ref country code: SK

Payment date: 20081128

Year of fee payment: 7

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 1144

Country of ref document: SK

Effective date: 20091203

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

Ref country code: SK

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

Effective date: 20091203

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110330

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 NON-PAYMENT OF DUE FEES

Effective date: 20110317

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 NON-PAYMENT OF DUE FEES

Effective date: 20091204

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

Ref country code: CH

Payment date: 20111227

Year of fee payment: 10

Ref country code: IE

Payment date: 20111227

Year of fee payment: 10

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

Ref country code: IT

Payment date: 20121221

Year of fee payment: 11

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

Ref country code: DE

Payment date: 20121220

Year of fee payment: 11

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: LI

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

Effective date: 20121231

Ref country code: CH

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

Effective date: 20121231

Ref country code: IE

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

Effective date: 20121203

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60213473

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60213473

Country of ref document: DE

Effective date: 20140701

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: 20140701

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: 20131231

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: 20131203