Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Michel Druet

Henri Hinc

Jean-Marie Dettorre

Jean-Claude Delorme

Dominique Leblanc

Frederic Drago

Pascal Martin

Michel Deboeuf

Nicolas Jaunet

Alain Faugeras

Gérard Buvat

Matthieu Lutz

Antoine Filiol

Quentin Deniau

Frédéric Drago

Jacques Lauper

Cyril Piq

Lionel Silva

Nicolas Bard

Jean-Marie Dettore

A method for detaching elastomer particles that adhere on microvalves () disposed on the internal surface of a vehicle tire mold () comprises vibrating the microvalve () at a constant amplitude ranging between approximately 0.05 and 0.2 mm and at a frequency ranging between 20,000 and 30,000 Hz during the detachment of the particles from the microvalve ().

Method for detaching elastomer particles

A method for cleaning a vulcanization mold for tires in a curing press uses device having a collaborative mobile robot and incorporating a computer program. The robot includes an autonomous mobile platform mounted on drive wheels and having batteries supplying electricity, a dry ice dispenser, sensors for identifying the location of the mold to be cleaned, and motors ensuring its displacement between a storage location of the device and the mold to be cleaned and the displacement of an articulated mobile arm of the robot. The robot bears a nozzle for spraying dry ice from the dispenser. The device comprises means for communication with a control unit. The control unit sends a mission instruction to the device, which navigates between a storage location and the location of the mold and automatically cleans the vulcanization mold.

Method and device for cleaning a vulcanization mold

A drum for producing a tire casing blank comprises a support and sectors forming a circumferential face of the drum. Each sector has a circumferential outer face having a contour of general trapezoidal form and is mounted so as to be movable relative to the support in a non-radial predetermined direction relative to an axis of rotation of the drum and intercepting this axis.

Drum for producing a tire, provided with mobile sectors

A drum for building a green tire casing having: The cam has two main faces and is designed such that a monotonous movement of the cam first of all causes the radial movement of some of the sectors by virtue of ramps situated on its first face without modifying a radial position of the other sectors, and then causes the radial movement of the other sectors by virtue of ramps situated on its second face, the movement of all of the sectors then being simultaneous.

Drum for producing a tire, provided with retractable sectors

A device for manufacturing a reinforcing ply N by assembling lengths of strip cut at an angle, comprising: a feed means () for delivering a strip (B), an assembly belt (), a transfer means () for conveying onto the assembly belt a given length of straight-grain strip in a direction (AA') comprising a retaining wall (), parallel to the planes of the assembly belt () and of the feed means, and a first face () of which is intended to come into contact with the surface of the strip, in which device the feed means (), the transfer means () and the assembly belt () are fitted with magnetic means. The retaining wall () is able to move up and down and back and forth, and the magnetic means are adjusted so that when the device is in operation: in the lowered position, the said magnetic means of the transfer means () exert on the metallic threads of the strip a magnetic field of a strength higher than the strength of the magnetic field exerted by the magnetic means () positioned on the feed means (), in the raised position, the said magnetic means of the transfer means () exert a magnetic field of a strength weaker than the strength of the magnetic field exerted by the magnetic means positioned on the assembly belt ().

Device for transferring and aligning strips intended to be assembled to form a ply

Growing community of inventors

Clermont-Ferrand, France

Michel Druet