Bridgestone Europe Nv/sa

Maria Cristina Caccami

Francesco Iozia

Cecilia Occhiuzzi

Gaetano Marrocco

Sara Amendola

Nicola D'Uva

Raffaele Di Ronza

Maria Cecilia Palumbi

Giacomo Andreini

Roberto Lombardi

Daniel Ghislain Devogelaer

Maria Cecilia Palumbi, I

A tire comprises a toroidal carcass, which has a central cavity and at least one body ply, which is partially folded onto itself and, hence, laterally has two turn-ups, each having an edge of the body ply resting against an intermediate portion of the body ply. Two annular beads are each surrounded by the body ply and having a bead core and a bead filler. An identification label is fixed in a removable manner, for example by gluing, and arranged in the area of an annular bead and supports a temporary RFID device, which can be read from a distance.

Tire provided with a temporary identification label

The invention concerns an RFID sensor device () for tires, designed to be embedded/integrated, at least partially, in/into, or applied to, a tire () and comprising a patch-type antenna that includes a multilayer structure comprising: a bottom ground plane (); an intermediate dielectric substrate () arranged on the bottom ground plane (); and one or more top conductive patches () arranged on the intermediate dielectric substrate () and covering partially or completely said intermediate dielectric substrate (), wherein said bottom ground plane () and said one or more top conductive patches () are short-circuited or capacitively coupled. The RFID sensor device () further comprises: a rigid or flexible board () arranged on said one or more top conductive patches () and/or the intermediate dielectric substrate (); an RFID chip () installed on the rigid/flexible board () and connected/coupled to said one or more top conductive patches (); a temperature sensor integrated into, or connected to, said RFID chip (); and a pressure sensor () installed on the rigid/flexible board () and connected to the RFID chip (). The bottom ground plane () is formed: by conductive textile/fabric/thread/fiber/yarn elements/layers or by a metal weft/net/mesh; or at least partially by conductive and/or metal elements/layers of the tire (). The intermediate dielectric substrate () is made at least partially of rubber, or is formed at least partially by dielectric and/or rubber elements/layers of the tire ().

RFID sensor device with patch-type antenna for tires

A method to manufacture an electronic device to be applied to rubber article. The device comprises an electronic element, two layers of thermoplastic material which are arranged in a sandwich-like manner so as to contain, between one another, the electronic element, and at least an outer rubber layer arranged to cover an outer surface of at least one of the respective thermoplastic layers. The method comprises a preliminary step comprising (a) a deposition operation, during which an adhesive solution consisting of a basic water solution comprising a latex of an elastomer rubber and a combination of resorcinol and formaldehyde is applied on at least one outer surface of one of the layers of thermoplastic material; and (b) a heating operation, during which the layers of thermoplastic material on which the adhesive solution was applied are kept at a temperature ranging from 120 to 230° C. for an amount of time ranging from 2 to 15 min.

Method to manufacture an electronic device for a rubber article

A system and method is provided for reading and/or writing data from/on RFID tags of tires conveyed on a conveyor belt in a conveyance direction, wherein each tire is fitted with a respective RFID tag storing a univocal identifier of said tire. An antenna is installed over or nearby the conveyor belt and configured to radiate RF signals toward a footprint area on the conveyor belt and receive backscattered RF signals from said footprint area. A reader is connected to the antenna to operate the latter in transmission and reception. A preliminary calibration step is applied to the reader and a reading and/or writing step is carried out by operating the calibrated reader.

Method and system for reading/writing data from/on RFID tags integrated/applied in/on tires conveyed on conveyor belts

Growing community of inventors

Rome, Italy

Maria Cristina Caccami