Granted Patent B2

US 12,638,337 · App. 18/277,786 · Granted May 26, 2026

Inventors: Michel Blondelet (Clermont-Ferrand, FR); Nicolas Besnard (Clermont-Ferrand, FR); Sylvie Richez (Clermont-Ferrand, FR)

Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

G01K1/14B60C23/20B60C2200/065

Abstract

Claims (23)

1 . An instrumentation method for a construction plant tire for measuring a temperature inside a rubber compound of the tire, comprising the following steps:

(a) identifying, on an outer surface of the tire, at least one area on a basis of predefined selection criteria, a temperature measuring sensor being intended for insertion into the at least one area;

(b) drilling a cavity in the at least one area identified in the preceding step, with a depth Hc in a drilling direction that is defined by a straight line making an angle Alpha with a radial direction of the tire at a drilling point;

(c) activating the temperature measuring sensor, which is equipped with a microprocessor, radio transmission means, a temperature measuring probe, and power supply means;

(d) inserting the temperature measuring sensor in the cavity drilled in the tire by interacting with a device for evacuating air that is present in the cavity;

(e) fixing the temperature measuring sensor to a bottom and/or on walls of the cavity; and

(f) hermetically closing the cavity.

2 . The instrumentation method according to claim 1 , wherein one of the predefined selection criteria for the drilling area for the insertion of the temperature measuring sensor consists in being positioned in the tread of the tire that is intended to be in contact with the ground.

3 . The instrumentation method according to claim 1 , wherein, the temperature measuring sensor having a cylindrical shape, the drilling step is performed using a drill bit with a diameter at most equal to a diameter of the temperature measuring sensor.

4 . The instrumentation method according to claim 1 , wherein the fixation of the temperature measuring sensor to the bottom and/or on the walls of the cavity is performed by adhesive bonding.

5 . The instrumentation method according to claim 4 , wherein the adhesive bonding is performed with a cold-vulcanizing adhesive.

6 . The instrumentation method according to claim 5 , wherein a setting time for the adhesive bonding is at least equal to 24 hours.

7 . The instrumentation method according to claim 1 , wherein the means for filling the cavity drilled in the tire comprise a stopper fixed by adhesive bonding to internal surfaces of the walls of the cavity.

8 . The instrumentation method according to claim 1 , wherein the insertion of the means for filling the cavity drilled in the tire interact with the device for evacuating air that is present in the cavity.

9 . The instrumentation method according to claim 1 , wherein the means for filling the cavity drilled in the tire comprise a stopper made of a same rubber compound as that forming the walls of the cavity.

10 . The instrumentation method according to claim 1 , wherein first temperature measuring sensors are positioned along a circumferential direction with a first distribution pitch, and/or second temperature measuring sensors are positioned in an axial direction with a second distribution pitch.

11 . A method for recovering a sensor after running of a tire, comprising the following steps:

(i) identifying a sensor insertion cavity on an outer surface of the tire;

(ii) withdrawing filling means;

(iii) eliminating a fixation of the sensor to a bottom and/or walls of the cavity;

(iv) withdrawing the sensor using a compressed-air injection device; and

(v) filling the cavity.

12 . The method according to claim 11 , wherein the method includes a step of dissolving fixing adhesive.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (28)