Abstract: 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.

Abstract: A method for the continuous measurement of the wear of a tire comprises the steps of measuring a capacitance or an electrical resistance within a tread pattern element of the tire, and deducing the height of the element with the aid of an equation relating the capacitance or resistance to the height, and devices for implementing the method.

Abstract: 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.

Abstract: Instrumentation for a rubber article for the ground contact system of a vehicle, such as an anti-vibration coupling or a tire, may comprise the use of wiring (34) for electrical connection between functional units (36, 38). A connecting element having wiring (34), or an electrical harness, integrated into a support (32) of precured elastomer compatible with the rubbers of the tire. The electrical connecting element may constitute part of an overall instrumentation complex (30), which comprises functional units (36, 38), connections (34) and other accessories (40, 42) necessary for instrumentation of the tire, integrated into the support (32), the complex (30) being so shaped as to be capable of being affixed to the tire casing prior to vulcanization.

Abstract: A tire equipped with at least one receiving antenna (2) of a reception device (1) which includes an electronic device (10) intended to be remote controlled by electromagnetic coupling with at least one transmitting antenna (8). This receiving antenna (2) is intended to be connected to the electronic device (10) and is divided into several loop parts (2.1, 2.2) arranged in a parallel circuit, these loop parts (2.1, 2.2) each having a surface (s1, s2), these surfaces (s1, s2) being juxtaposed so that during rolling of the tire the loop parts (2.1, 2.2) are coupled successively and continuously to the transmitting antenna (8).

Abstract: A method and a device for evaluating the deformations or forces to which a structure having an elastomeric body (2) is subjected. The device includes a dipole (6), the dielectric (3) of which is formed by the elastomeric body, and an electronic analyzing circuit sensitive to a variation of a capacitive characteristic of the dipole caused by the deformations of the elastomeric body. In particular, but not exclusively, the invention relates to a device for evaluating the forces to which a pneumatic tire is subjected when rolling, as it passes through the contact area. The invention applies similarly in other structures having an elastomeric body, such as, for example, the elastomeric joints intended for the chassis system of vehicles.

Abstract: The invention relates to a method for determining a transverse component (Fy) of a resultant of forces exerted through the roadway (3) on an area of contact (2) of a tire (1). The transverse component (Fy) is deduced from at least one measurement of the angular circumferential deformation in at least one first side wall (4) of the tire (1) at a first fixed point (B) in space which is located at an azimuth (?) along the circumference of the tire (1).

Abstract: A method for the continuous measurement of the wear of a tire comprises the steps of measuring a capacitance or an electrical resistance within a tread pattern element of the tire, and deducing the height of the element with the aid of an equation relating the capacitance or resistance to the height, and devices for implementing the method.

Abstract: The present invention relates to a method and a device for evaluating the deformations or forces to which a structure comprising an elastomeric body (2) is subjected, said device comprising a dipole (6), the dielectric (3) of which is formed by said elastomeric body and an electronic analysing circuit sensitive to a variation of a capacitive characteristic of the dipole caused by said deformations of said body.

Abstract: A tire includes a nail-type force sensor embedded, for example, in an isolated element such as a tread pattern block (T112). The sensor comprises a rigid shank (1) designed to be acted upon by the force to be determined and a head (2). The head (2) comprises an element attached to the shank (1) 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 (1) at rest and which essentially maintain that position when the shank (1) is displaced.

Abstract: A tire equipped with at least one receiving antenna (2) of a reception device (1) which includes an electronic device (10) intended to be remote controlled by electromagnetic coupling with at least one transmitting antenna (8). This receiving antenna (2) is intended to be connected to the electronic device (10) and is divided into several loop parts (2.1, 2.2) arranged in a parallel circuit, these loop parts (2.1, 2.2) each having a surface (s1, s2), these surfaces (s1, s2) being juxtaposed so that during rolling of the tire the loop parts (2.1, 2.2) are coupled successively and continuously to the transmitting antenna (8).

Abstract: The invention relates to a method for determining a transverse component (Fy) of a resultant of forces exerted through the roadway (3) on an area of contact (2) of a tire (1). The transverse component (Fy) is deduced from at least one measurement of the angular circumferential deformation in at least one first side wall (4) of the tire (1) at a first fixed point (B) in space which is located at an azimuth (&PHgr;) along the circumference of the tire (1).

Abstract: A tire includes a nail-type force sensor embedded, for example, in an isolated element such as a tread pattern block (T112). The sensor comprises a rigid shank (1) designed to be acted upon by the force to be determined and a head (2). The head (2) comprises an element attached to the shank (1) 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 (1) at rest and which essentially maintain that position when the shank (1) is displaced.

Abstract: A process for improving the adhesion of a tire cover to dry ground includes providing a tire cover having a tread comprised of an electrically insulating material which is delimited radially by inner and outer faces and laterally by two lateral faces connecting between them the radially inner and outer faces of the tread, and further providing at least one circumferentially extending conductive layer which substantially connects the lateral faces to one another, the conductive layer having a resistivity less than that of the insulating material, which insulating material is provided radially on either side of the conductive layer in the tread.