Gurgaon, India
Gurgaon, India

Michelin is a tire manufacturer based in Clermont-Ferrand in the Auvergne région of France. It is one of the three largest tire manufacturers in the world along with Bridgestone and Goodyear. In addition to the Michelin brand, it also owns the BFGoodrich, Kleber, Tigar, Riken, Kormoran and Uniroyal tire brands. Michelin is also notable for its Red and Green travel guides, its roadmaps, the Michelin stars that the Red Guide awards to restaurants for their cooking, and for its company mascot Bibendum, colloquially known as the Michelin Man.Michelin's numerous inventions include the removable tire, the pneurail and the radial tire. Wikipedia.


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Tread (1) for civil engineering work vehicle tyre, this tread having a wearable thickness of material EMU, this tread (1) comprising solid parts forming raised elements (2) delimited by grooves (3, 4), each solid part comprising a contact face and opening onto this contact face (20) at least one cavity (5) of maximum depth at least greater than 50% of the wearable thickness EMU, each cavity (5) opening onto the contact face (20) in the as-new state and being delimited by a wall surface and a bottom surface, each wall surface (51) delimiting a cavity (5) intersecting the contact face (20) along an edge contour (53) having a geometry comprising a major axis AA and a minor axis BB, the length of the major axis AA being at least equal to 1.5 times the length of the minor axis BB in the as-new state, this tread being such that for any tread surface down to a predefined level of wear, this level being at most equal to 30% of the wearable thickness of material EMU, the edge contour (53) of each cavity (5) considered on said tread surface is such that the angle that the major axis AA makes with the circumferential direction is at least equal to 0 degrees and at most equal to 40 degrees, and in that beyond a predefined level of wear, the angle that the major axis AA makes with the circumferential direction is greater than 40 degrees and greater than the angle that the major axis AA makes with the circumferential direction on the tread surface in the as-new state.


The invention relates to a 1,3-dipolar compound comprising an ester function of carboxylic acid, and to a dienic rubber composition reinforced by an inorganic charge. Such a composition has an improved compromise of rigidity, cohesion and hysteresis properties.


The invention relates to a semi-finished product (P) which includes a single-strand cable (C) gummed in situ and encased in a calendering rubber composition (30). The cable includes: an inner layer (CT1) of the cable including N1 internal wire(s); an outer layer (CT3) of the cable including N3 external wires helically wound around the inner layer of the cable; and a gumming rubber composition placed between the inner layer of the cable and the outer layer of the cable. Each gumming (20) and calendering (30) rubber composition contains a corrosion inhibitor. The corrosion inhibitor content of the calendering rubber composition (30) is different from the corrosion inhibitor content of the gumming rubber composition (20).


The invention relates to a method for placing a self-sealing rubber composition on the inner surface of a tyre casing (40) comprising the steps of: inserting a self-sealing composition, which is not cross-linked, into an extrusion means having specifically adapted geometric and thermodynamic characteristics; adjusting the speed and temperature conditions of the extrusion means such that, at an application nozzle (30) which forms the outlet channel of said extrusion means, the self-sealing composition is cross-linked; and moving the application nozzle toward the inner surface of said casing which has been previously made to move relative to the application nozzle, and directly placing an extruded and cross-linked bead (41) of a given width and profile on said inner surface of the casing.


Patent
Michelin | Date: 2017-01-18

A sensor device is provided for use in tire inspection. The sensor device is configured for removable placement along the inner surface of a tire. The sensor device has a profile that allows placement of one or more sensors in close proximity to the inner surface of the tire. The profile allows the sensor device to be used with a variety of tire sizes and shapes.


Patent
Michelin | Date: 2017-02-01

The invention relates to a method for evaluating a force for demoulding a tyre from a mould, which consists in measuring a demoulding force and a moulding surface of a control mould (2) and of two test specimens (3, 4), said method comprising: - a step of choosing the control mould (2), - a step of calculating the moulding surface area S1 of the control mould (2), - a step of measuring the force F1 for demoulding the control mould (2), - a step of determining a first control test specimen (3) with a moulding surface area S0, - a step of determining a second control test specimen (4) with a moulding surface area S0, S0 being different from S0, - a step of measuring the force F0 for demoulding the first control test specimen (3), - a step of measuring the force F0 from demoulding the second control test specimen (4), - a step of calculating the ratio of the moulding surface area S0 of the first test specimen (3) and S0 of the second test specimen (4) so as to define a test specimen surface ratio Rse - a step of calculating the ratio of the force F0 for demoulding the first test specimen (3) and F0 for demoulding the second test specimen (4) so as to define a test specimen force ratio Rfe - a step of selecting a mould (8, 81, 82) to be measured, - a step of measuring the moulding surface area Sm of the mould (8, 81, 82) that is to be measured, - a step of calculating the force Fm for demoulding the mould (8, 81, 82) that is to be measured, such that Fm = F1 x Sm/S1 x Rfe/Rse.


Patent
Michelin | Date: 2017-03-08

The invention concerns a system for evaluating the condition of a tyre, the system comprising a first housing set on the ground and a wear detection device for detecting the wear of a tyre when the tyre passes over said first housing, the system further comprising - a first device for detecting the presence of a tyre on the first housing, and - electronic means for activating the wear detection device when the presence detection device detects the presence of a tyre.


A sensor device is provided for use in tire inspection along a bead portion of the tire. The sensor device includes a magnet array configured to provide the desired fields of magnet flux for a sensor array, which is used to detect damage to reinforcements of a body ply of the tire near the bead portion. The fields of magnetic flux are sufficient to provide for damage detection in the bead portion without overly saturating the sensor array. The sensor device also allows for positioning the sensor array proximate to the inner surface of the tire for improved detection.


The invention relates to a rubber tyre comprising a sidewall (3). The tyre is characterised in that the sidewall (3) comprises at least one encoded matrix symbol (4), said encoded matrix symbol (4) comprising dark parts and light parts, the texture of the dark parts being of the same material as the sidewall (3) and contrasting with the rest of the tyre (1). The texture is an organised arrangement of a plurality of elements, such as strands (401), sipes (402), parallelepipeds (403), blocks (404), grooves (405), recessed (411)/raised (414) patterns.


Patent
Michelin | Date: 2017-02-22

The invention relates to a tyre (1) for an airplane, including a working reinforcement (2) arranged radially inside a tread (3) and radially outside a carcass reinforcement (4), the working reinforcement (2) including at least one radially innermost working bilayer (21), said bilayer having the greatest axial width (LT) and including two axial ends (E), the carcass reinforcement including at least one carcass layer (41). The distance (D) between an axial end (E) of the bilayer (21) and the orthogonal projection thereof (I) onto the carcass layer (41) is greater than 8 mm and the distance (D) between the point (F) of the bilayer (21), located axially inside the axial end (E) at a distance (L) of 25 mm, and the orthogonal projection (J) thereof onto the carcass layer (41) is no greater than the distance (D), and is such that the angle (A) equal to atan[(D-D)/ L] is greater than 12.

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