B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 9/20 (2006.01) B60C 9/22 (2006.01)
Patent
CA 2370909
A radial ply (1) try P having a maximum axial width So, comprising a crown reinforcement (3) formed by at least two working crown plies (32, 34) whose axial widths L32,L34 are greater than the width L33 of an additional reinforcement (33) comprising non-extendable and substantially radial reinforcing elements and which is radially disposed between said plies (32), being axially comprised of three parts, a center part in the form of a ply (33') formed from non-extendable and substantially radial reinforcing elements, having a width and two side parts in the form of strips (33 ) which are both formed from circumferential reinforcing elements, whereby the modulus of elasticity with respect to traction per side strip (33 ) unit width is at the most equal to the modulus of elasticity with respect to traction of the most extendable working ply (32, 34) when measured in the same conditions.
Pneumatique P à armature de carcasse radiale (1) de largeur axiale maximal S0, comprenant une armature de sommet (3) formée d'au moins deux nappes de sommet de travail (32, 34) ayant des largeurs axiales L32, L34 supérieures à la largeur L33 d'une armature additionnelle (33) d'éléments de renforcement, inextensibles et sensiblement radiaux, disposée radialement entre lesdites nappes (32, 34), et étant axialement composée de trois parties, une partie centrale sous forme de nappe (33') formée d'éléments de renforcement inextensibles et sensiblement radiaux, ayant une largeur et deux parties latérales sous formes de bandes (33") formées chacune d'éléments de renforcement circonférentiels, le module d'élasticitié à la traction par unité de largeur d'une bande latérale (33") étant au plus égale au module d'élasticité à la traction, mesuré dans les mêmes conditions, de la nappe de travail (32, 34) la plus extensible.
Michelin Recherche Et Technique S.a.
Robic
Societe de Technologie Michelin
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