Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Sebastien Noel

Julien Destraves

Jean-Mathieu Clergeat

Annabel Tourenne

Isabelle Aldon

Sébastien Rigo

Ronald Cress

Aurore Lardjane

Jean-Claude Delorme

Charlotte Caffeau

Nicolas Chevaux

Bernard Jault

Orel Fournier

A process for manufacturing a rubber patch comprising a radiofrequency transponder, the patch having a first layer and a second layer, the method comprising moulding and vulcanizing a first layer, the exterior surface of which comprises a cavity able to receive a radiofrequency transponder, placing a transponder in the cavity, and then placing and vulcanizing a second layer in order to embed the transponder between the two layers.

Method for manufacturing a patch equipped with a radiofrequency transponder

A tire casing is equipped with a radiofrequency transponder and includes a crown, two sidewalls and two beads revolving around a reference axis, first threads forming outward segments and return segments that are arranged adjacently, aligned circumferentially, anchored in the two beads with, in each bead, loops in each case linking an outward segment to a return segment and, in each bead, means for anchoring the first threads, comprising second threads oriented circumferentially axially bordering the first threads and forming at least one spiral, the first threads forming at least one circumferential alignment defining the carcass ply that separates said tire casing into two zones, inside and outside with respect to this carcass ply. The radiofrequency transponder comprises at least one electronic chip and a radiating radiocommunication antenna and is positioned radially externally in relation to the at least one spiral, characterized in that the radiofrequency transponder comprises a primary antenna electrically connected to the electronic chip, in that the primary antenna is electromagnetically coupled to the radiating antenna, and in that the radiating antenna is formed by a single-strand helical spring defining a first longitudinal axis.

Pneumatic tire equipped with an electronic member

A half-wave radiating antenna for an electronic member of a tire, the length of which is suitable for operating in the frequency range between 860 MHz and 960 MHz, includes a core coated with a brass coating, such that the thickness of the brass coating is between 1.0 and 2.0 &#x3bc;m.

Antenna for an electronic member of a tire

A radiofrequency communication module or semi-finished product able to be integrated into the structure of a tire comprises a radiofrequency transponder embedded in an elastomer blend and comprising an electronic chip and a radiating antenna that is able to communicate with a radiofrequency reader. The radiofrequency transponder in addition comprises a primary antenna that is electrically connected to the electronic chip, the primary antenna is electromagnetically coupled to the radiating antenna, the radiating antenna consists of a single-strand helical spring, and the radiating antenna has a core made of steel coated with a conduction layer.

Radiofrequency communication module for a tire

A radiofrequency communication module or semi-finished product able to be integrated into the structure of a tire comprises a radiofrequency transponder embedded in a rubber blend and comprising an electronic chip and a radiating antenna that is able to communicate with a radiofrequency reader. The radiofrequency transponder in addition comprises a primary antenna that is electrically connected to the electronic chip, the primary antenna is electromagnetically coupled to the radiating antenna, the radiating antenna consists of a single-strand helical spring, and the radiating antenna has a core made of steel coated with a metal exterior adhesion layer for adhesion to the rubber blend that surrounds it.

A tire casing is equipped with a radiofrequency transponder and includes a crown, two sidewalls and two beads, each bead including at least one annular bead wire revolving around a reference axis, at least one annular carcass ply, coaxial with the reference axis anchored in the beads separating the tire casing into two zones, inside and outside the carcass ply. The radiofrequency transponder comprises at least one electronic chip and a radiating radiocommunication antenna and is positioned radially externally in relation to said bead wire, characterized in that the radiofrequency transponder comprises a primary antenna electrically connected to the electronic chip, in that the primary antenna is electromagnetically coupled to the radiating antenna, and in that the radiating antenna is formed by a strand helical spring defining a first longitudinal axis.

A reinforced product () comprises: an elastomer matrix (), several reinforcing elements () embedded in the elastomer matrix (), the reinforcing elements () being arranged side by side in a main direction (X). Each reinforcing element () comprises: at least one filamentary element () comprising a single monofilament, and at least one sheath coating the filamentary elements () and comprising at least one layer of a thermoplastic polymer composition. The ratio R1=ODO/E of the mean minimum thickness ODO of elastomer present on the back of the sheath to the mean thickness E of the reinforced product () is less than or equal to 0.17, the mean minimum thickness of elastomer ODO and mean thickness E of the reinforced product () being measured in a direction (Y) substantially perpendicular to the main direction (X).

Thin reinforced product and tire comprising said product

A tire having a radial carcass reinforcement, composed of at least one layer of metal reinforcing elements, the said tire comprising a crown reinforcement, itself topped radially by a tread, the said tread being joined to two beads via two sidewalls. The metal reinforcing elements of at least one layer of the carcass reinforcement are cords exhibiting, in the 'permeability' test, a flow rate of less than 20 cm/min and at least one layer of the carcass reinforcement is provided, on at least one face, with textile threads exhibiting, in the 'permeability' test, a flow rate of between 1 and 3 cm/min.

Growing community of inventors

Clermont-Ferrand, France

Sebastien Noel