Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Compagnie Générale Des Etablissements Michelin-michelin & Cie

Societe Detechnologie Michelin

Jean Coue

Gaëlle Netzer

Robert C Radulescu

François Barbarin

Michel Blondelet

Romain Libert

Patrick Pennequin

Marie-H&eacute;lene Vantal

Stephanie Laube

Garry Vegi

Thomas Ferrand

Stéphanie Laube

A tire comprises a polymeric composition comprising at least one block thermoplastic elastomer comprising at least one elastomer block and at least one thermoplastic block, in which each elastomer block comprises at least 70% by weight of units resulting from isoprene, with respect to the weight of said elastomer block, and at least one thermoplastic block comprises 40% to 80% by weight of units resulting from one or more styrenic monomers and 10% to 63% by weight of units resulting from diphenylethylene, with respect to the weight of said thermoplastic block.

Tire comprising a polymeric composition comprising a thermoplastic elastomer comprising units derived from diphenylene ether monomer

A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10&#xb0; and 45&#xb0; with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and the axially widest working crown layer being radially internal to the other working crown layers. The tire additionally comprises in each shoulder at least one layer of reinforcement elements which are parallel to each other in the layer and are oriented radially relative to the reinforcement elements of the working layer radially adjacent to said additional layer, the axially inner end of said additional layer being radially adjacent to the edge of the radially outer working crown layer, and at least part of said additional layer being radially and/or axially adjacent to the edge of the axially widest working crown layer, the ratio of the elasticity modulus of a layer P to the elasticity modulus of the calendering layer of the working layer adjacent to the additional layer being of between 0.5 and 1, said layer P being arranged between at least part of the working crown layers, the axially outer end of said layer P being axially between the ends of the axially least wide and widest working crown layers.

Tire for heavy vehicles

A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10&#xb0; and 45&#xb0; with the circumferential direction, at least one protective layer being radially to the outside of the working crown layers, said crown reinforcement being topped radially by a tread, said tread being joined to two beads by means of two sidewalls. The tire additionally comprises in each shoulder at least one layer of reinforcement elements which are parallel to each other in the additional layer and are oriented circumferentially, the axially inner end of said additional layer being radially adjacent and external to the radially outermost working layer and said axially inner end of the additional layer being radially adjacent and internal to at least part of the protective layer.

A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10&#xb0; and 45&#xb0; with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and the axially widest working crown layer being radially internal to the other working crown layers. The tire additionally comprises in each shoulder at least one layer of reinforcement elements which are parallel to each other in the layer and are oriented substantially perpendicular relative to the reinforcement elements of the working layer radially adjacent to said additional layer, the axially inner end of said additional layer being radially adjacent to the edge of the radially outer working crown layer, and at least part of said additional layer being radially and/or axially adjacent to the edge of the axially widest working crown layer.

A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10&#xb0; and 45&#xb0; with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls. The tire comprises additionally at least in each shoulder a layer of reinforcement elements which are oriented circumferentially and have an undulation, the axially inner end of said additional layer being radially adjacent to the edge of a working crown layer, the axially outer end of said additional layer being located at a distance from the equatorial plane of the tire which is at least equal to the distance between said plane and the end of the working layer to which it is adjacent and the distance between said layer and the end of the axially widest working crown layer being greater than 1.5 mm.

A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10&#xb0; and 45&#xb0; with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and at least two working layers having different axial widths. At least one first profiled element P of rubber mix separates one working layer from at least one end of a second, axially narrower, layer, said profiled element P being radially separated at least in part from the liner C of said axially narrower working layer by a second profiled element of rubber mix G, said first and second profiled elements of rubber mix P and G and said liner C having secant moduli of elasticity under tension at 10% elongation MP, MG, MC respectively such that MC&#x2267;MG&#x3e;MP, said tire additionally comprising in each shoulder at least one layer of reinforcement elements, which are parallel to each other in the additional layer and are oriented substantially perpendicular relative to the reinforcement elements of the working layer radially adjacent to said additional layer, and the axially inner end of said additional layer being radially adjacent to the edge of at least one working crown layer.

A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10&#xb0; and 45&#xb0; with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and the axially widest working crown layer being radially internal to the other working crown layers. The tire comprises additionally in each shoulder at least one layer of reinforcement elements which are parallel to each other in the layer and are oriented circumferentially, the axially inner end of said additional layer being radially adjacent to the edge of a working crown layer, at least part of said additional layer being radially and/or axially adjacent to the edge of the axially widest working crown layer and the axially outer end of said additional layer being radially internal to the axially widest working crown layer.

A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10&#xb0; and 45&#xb0; with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls. The tire comprises additionally in each shoulder at least a layer of reinforcement elements which are parallel to each other in the layer and are oriented circumferentially, the axially inner end of said additional layer being radially adjacent to the edge of the radially outermost working crown layer, the axially outer end of said layer being located at a distance from the equatorial plane of the tire which is at least equal to the distance between said plane and the end of the working layer to which it is adjacent and the distance between said additional layer and the end of the axially widest working crown layer being greater than 1.5 mm.

A process for stabilizing the mechanical operating characteristics of an elastomeric flexible joint which acts as a spring in a vehicle suspension device by subjecting the joint, before it is put into service, to a deformation corresponding substantially to the maximum deformation intended in service.

Flexible joint for a vehicle suspension device and process for stabilizing the mechanical operating characteristics of a flexible joint for a vehicle suspension device

Growing community of inventors

Romagnat, France

Jean Coue