Michelin Recherche Et Technique S.a.

Valery Poulbot

Patrice Rey

Patrick Gougnaud

Heathcliff Demaie

Antoine Robinet

The invention concerns a tire provided with a capacitative sensor including two substantially parallel electrodes, the sensor being carried by a sidewall of the tire. The electrodes of the sensor lie substantially in a plane perpendicular to the rotation axis of the tire and are substantially orientated in an ortho-radial direction. The invention also concerns a tire provided with a deformation sensor, a method for evaluating the deflection of a tire, and a deformation sensor.

Tire having a deformation sensor, and method of evaluation of the deflection of a tire

A tire equipped with at least one receiving antenna () of a reception device () which includes an electronic device () intended to be remote controlled by electromagnetic coupling with at least one transmitting antenna (). This receiving antenna () is intended to be connected to the electronic device () and is divided into several loop parts () arranged in a parallel circuit, these loop parts () each having a surface (ss), these surfaces (ss) being juxtaposed so that during rolling of the tire the loop parts () are coupled successively and continuously to the transmitting antenna ().

Tire with a receiving antenna

The invention relates to a method for determining a transverse component (Fy) of a resultant of forces exerted through the roadway () on an area of contact () of a tire (). The transverse component (Fy) is deduced from at least one measurement of the angular circumferential deformation in at least one first side wall () of the tire () at a first fixed point (B) in space which is located at an azimuth (&#x3c6;) along the circumference of the tire ().

Method for determining components of forces exerted on a tire

A tire includes a nail-type force sensor embedded, for example, in an isolated element such as a tread pattern block (T ). The sensor comprises a rigid shank ( ) designed to be acted upon by the force to be determined and a head ( ). The head ( ) comprises an element attached to the shank ( ) capable of being deformed when the shank is displaced. This deformable element carries means to measure the deformation and comprises anchoring points which have a position relative to the shank ( ) at rest and which essentially maintain that position when the shank ( ) is displaced.

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Les Martres-d'Artiere, France

Valery Poulbot