Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Michel Deboeuf

Thierry Ducros

Stephane Ravat

Gael Roty

Mickael Rouby

Stéphane Ravat

Thomas Guy

Christian Beaudonnet

Clement Dubois

Philippe Bournerie

Drum () for manufacturing a tire blank, comprising a shaft, two flanges () movable in translation along the shaft, and means for supplying compressed air, each flange comprising at least one pneumatic effector (). At least one flange comprises a first, radially internal ring () and a second, radially external ring () movable in rotation around the first ring by means of at least two airtight pivot connections (), the rings and the pivot connections delimiting at least one sealed chamber (), said flange comprising at least one first compressed-air circulation channel (), a first section () of the first channel belonging to the first ring being connected at one of its ends to the sealed chamber, and a second section () of the first channel belonging to the second ring being connected at one of its ends to the sealed chamber.

Drum and method for manufacturing a tire blank

A device, which converts a reinforcing strip from being flat to being undulating, includes a transporter that guides fingers along a closed circuit, with the fingers being able to bear against a first face of the strip; a support plate that rotates about a plate axis and that supports rollers having axes parallel to the plate axis, with the rollers being able to bear against a second face of the strip; and a synchronizer that synchronizes a rotation of the support plate and a forward motion of the transporter. The closed circuit has an intersecting portion at which the synchronizer allows the fingers and the rollers to move rotationally in a common plane perpendicular to the plate axis, with the fingers and the rollers being interposed at the intersecting portion so as to cause the strip to have undulating waves that extend in the common plane.

Device and method for producing tires

The method includes the step of running a cutting means between two threads of the reinforcing ply. The method proceeds with the steps of measuring; a discrepancy between an actual cutting line (A'B&#x2032;C&#x2032;) and a theoretical cutting line (ABC) is measured and determining a point of intersection of the actual cutting line (B&#x2032;) with a reference longitudinal line (XX&#x2032;) placed on the strip. The actual cutting line (B&#x2032;C&#x2032;) of that part of the rubber profiled elements that are not superposed with the reinforcing ply is longitudinally offset (Z) with respect to the theoretical cutting line (BC) so that the actual cutting line (B&#x2032;C&#x2032;) meets the reference longitudinal line (XX&#x2032;) at the point of intersection (B&#x2032;) of the reinforcing ply (A&#x2032;B&#x2032;) with the reference longitudinal line (XX&#x2032;). The rubber profiled elements that are not superposed with the reinforcing ply are cut along the said actual cutting line.

Method for cutting a strip of tire reinforcing product comprising wires at an angle to the longitudinal direction of the product

Device for cutting and transferring a length of strip let off a continuous strip, comprising a first face and a second face to be laid on a rotary receiving surface and containing

Device for cutting and transferring a strip for the assembly of a tire

A cutting blade, which is useable for cutting a reinforcing strip into reinforcing plies, includes one or more notches disposed at given intervals. When a volume of rubber separating two reinforcing threads is cut by the cutting blade, bridges of rubber are left between a rear edge of a first reinforcing ply and a front edge of a second reinforcing ply.

Growing community of inventors

Clermont-Ferrand, France

Michel Deboeuf