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1. WO2016184755 - TYRE COMPRISING WORKING LAYERS FORMED BY INDIVIDUAL WIRES

Publication Number WO/2016/184755
Publication Date 24.11.2016
International Application No. PCT/EP2016/060595
International Filing Date 11.05.2016
IPC
B60C 9/20 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9Reinforcements or ply arrangement of pneumatic tyres
18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20built-up from rubberised plies each having all cords arranged substantially parallel
CPC
B60C 2009/2016
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9Reinforcements or ply arrangement of pneumatic tyres
18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20built-up from rubberised plies each having all cords arranged substantially parallel
2012with particular configuration of the belt cords in the respective belt layers
2016comprising cords at an angle of 10 to 30 degrees to the circumferential direction
B60C 2009/2064
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9Reinforcements or ply arrangement of pneumatic tyres
18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20built-up from rubberised plies each having all cords arranged substantially parallel
2061Physical properties or dimensions of the belt coating rubber
2064Modulus; Hardness; Loss modulus or "tangens delta"
B60C 2009/2077
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9Reinforcements or ply arrangement of pneumatic tyres
18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20built-up from rubberised plies each having all cords arranged substantially parallel
2074Physical properties or dimension of the belt cord
2077Diameters of the cords; Linear density thereof
B60C 2200/06
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
2200Tyres specially adapted for particular applications
06for heavy duty vehicles
B60C 9/20
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9Reinforcements or ply arrangement of pneumatic tyres
18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20built-up from rubberised plies each having all cords arranged substantially parallel
B60C 9/2006
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9Reinforcements or ply arrangement of pneumatic tyres
18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20built-up from rubberised plies each having all cords arranged substantially parallel
2003characterised by the materials of the belt cords
2006consisting of steel cord plies only
Applicants
  • COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN [FR]/[FR]
Inventors
  • NAVARRO-LOSADA, Claudia
  • LARDJANE, Aurore
  • PARMENTIER, Jean-François
  • MARTIN, Vincent
  • SALGUES, Nathalie
Agents
  • LE CAM, Stéphane
Priority Data
155439318.05.2015FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) TYRE COMPRISING WORKING LAYERS FORMED BY INDIVIDUAL WIRES
(FR) PNEUMATIQUE COMPORTANT DES COUCHES DE TRAVAIL CONSTITUEES DE FILS UNITAIRES
Abstract
(EN)
The invention relates to a tyre comprising a crown ply formed by at least three working crown layers of reinforcing elements. According to the invention, in a meridian plane, the thickness of the layers, measured in the equatorial plane, is less than 5 mm; the reinforcing elements are individual metal wires having a diameter of less than 0.50 mm; the distance between the reinforcing elements, measured along the normal to the direction of the centre line of the wire, is strictly less than 1 mm; the axial width of each of the layers is greater than 60% of the axial width of the tread; the tensile modulus of elasticity at 10% elongation of at least one skim coat of at least one working crown layer is less than 8.5 MPa; and the maximum tan(δ) value, denoted tan(δ)max, of the skim coat is less than 0.100.
(FR)
Pneumatique comprenant une armature de sommet formée d'au moins trois couches de sommet de travail d'éléments de renforcement. Dans un plan méridien, l'épaisseur desdites couches mesurée dans le plan équatorial est < 5 mm, les éléments de renforcements étant des fils métalliques unitaires de diamètre < 0.50 mm, la distance entre les éléments de renforcement, mesurée selon la normale à la direction de la ligne moyenne du fil, étant strictement < 1 mm et la largeur axiale de chacune desditescouches étant > 60 % de la largeur axiale de la bande de roulement, le module d'élasticité sous tension à 10 % d'allongement d'au moins une couche de calandrage d'au moins une couche de sommet de travail étant < 8.5 MPa et la valeur maximale de tan(δ), noté tan(δ)rnax, de ladite couche de calandrage étant < 0.100.
Also published as
Latest bibliographic data on file with the International Bureau