Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Michelin Recherche Et Techniques S.a.

Anthony Gueugneau

Khotchakorn Pengsaloong

Bernard Villeneuve

Romain Calvel

Etienne Blanchet

Gael Roty

Stéphane Montzieux

Olivier Muhlhoff

Jonathan Lejeune

Jean-Claude Desvignes

Xavier Marduel

Julien Besset

The molding element has a plurality of contacting element delimited by grooves, the molding element having a molding surface for forming a contact face of the contacting element intended to come into contact with ground during rolling and a groove forming rib portion for forming the groove comprising two opposed rib side faces for forming two opposed groove side faces and a rib top face connecting two rib side faces for forming a groove bottom, the groove forming rib portion providing a space opening to at least one of the rib side faces and/or to the rib top face and an insert being received in the space for forming a portion of the groove and a closing device in the groove, the insert comprises at least one notched plate of thickness t, the notched plate includes at least one notch for forming a flexible fence of the closing device.

Molding element for manufacturing a noise reducing tread

The molding element has a plurality of contacting elements delimited by a plurality of grooves and has a molding surface for forming a contact face and a groove forming rib portion for forming the groove. The groove forming rib portion provides a space opening to one of the rib side faces and/or to the rib top face and an insert that is received in the space for forming a portion of the groove and a closing device in the groove. The insert is composed of thin plates stacked with one another. The forming plate assembly also comprises at notched plates of thickness t, and each notched plate includes a notch for forming a flexible fence, and the notched plate has no area overlapping to the notch in the other notched plated adjacent thereto in sectional view in a direction along which the groove forming rib portion extends.

A molding element having a molding surface forming a contact face and a groove forming rib portion forming the groove comprising two opposed rib side faces and a rib top face connecting two rib side faces. The groove forming rib portion provides at least one space opening to at least one of the rib side faces and/or to the rib top face. An insert is received in the space. The insert comprises a cavity for forming a closing device in the groove. The cavity has two opposed cavity faces and opens to at least two faces of the insert corresponding to the faces of the groove forming rib portion. The insert comprises at least one cutting means extending and/or projecting in a direction the groove forming rib portion extends for cutting a material filled in the cavity during demolding.

The molding element has a molding surface for forming a contact face of the contacting elements and a groove forming rib portion for forming the groove. The groove forming rib portion has opposed rib side faces for forming opposed groove side faces and a rib top face connecting the rib side faces for forming a groove bottom. The groove forming rib portion provides at least one space opening to at least one of the rib side faces and/or to the rib top face and an insert is received in the space. The insert is composed of a plurality of thin plates stacked in a direction along which the rib extends and comprises at least one notched plate of thickness tincluding at least one notch for forming a flexible fence of the closing device; and comprises at least one support plate of thickness twithout notch.

The molding element has a molding surface forming a contact face and a groove forming rib portion forming the groove comprising two opposed rib side faces and a rib top face connecting two rib side faces. The groove forming rib portion provides at least one cavity opening to the rib top face and to at least one of the rib side faces. The cavity has two opposed cavity faces. The molding element comprises at least one cutting means extending and/or projecting in a direction the groove forming rib portion extends for cutting a material filled in the cavity during demolding.

A mould element () intended to be attached in a mould () for vulcanizing tires, the mould element () having the form of a skin with a thickness (E) comprised between 0.25 and 6 mm and comprising a bearing surface () with, on the opposite side, a moulding surface () intended to form all or part of the external surface of the tire. The mould element comprises a pattern () comprising a plurality of recessed () or protruding () elements, formed as integral parts of the mould element ().

Mould element comprising a high-contrast texture

A tire () made of rubber material, comprising a tread (), said tread having a tread surface () intended to come into contact with a road surface when the tire is being driven on, this tread surface having, in cross section, a certain curvature. The tread surface () comprises, over at least 80% of its surface, a texture () contrasting with the rest of the tire, this texture () having a plurality of elements that protrude from or are recessed into the tread surface (), and each element extends perpendicularly (&#x3b8;=90&#xb0;)to the tread surface () along the curvature of this tread surface ().

Tire including a high-contrast texture on the tread surface

Mold () for vulcanizing a tire comprises a lining () for molding the tread of this tire and a mobile valve () intended to vent the mold (). The valve is of a single piece and is guided in a guide part () belonging to the lining and in abutment on each side of this guide part to limit the movement of the valve in the lining. This valve and this guide part are made from the same material. The mobile valve thus produced is of one piece and non-removable from the guide part, and is therefore quicker and more accurate. It is held in the guide part by two abutments and, because it is made from the same material as the guide part, these can be produced at the same time. The mold in general comprises several valves to remove the air trapped during the molding of the tire.

Mould for vulcanising a tire comprising movable elements obtained by laser sintering

Lining element intended to be inserted into a mold for molding and vulcanizing a tire tread, the lining element comprising a body and inserts inserted into this body, at least some of the inserts comprising a pattern comprising a plurality of recessed or projecting elements, the pattern being formed as an integral part of the inserts.

Mould insert comprising a high-contrast texture

A mold for vulcanizing and molding a tire is disclosed herein. The tire includes a tread delimited by two sidewalls, and the mold includes a ring for molding the tread of the tire and two shells having tire-molding surface features for molding the sidewalls. At least one of the shells has a removable shell part extending circumferentially on the side of the sidewall of the tire to be molded, with the tire-molding surface features being incorporated into the removable shell part.

Mold for a tire having a shell with removable parts

A tire mold part having a body with a first surface intended to mold all or part of a tread surface, a second surface opposite the first and intended to contact another part of the mold, and a lateral face connecting the first surface and the second surface. The body includes a sintered part of a metallic powder fused together layer by layer, and a non-sintered part attached to the sintered part and in contact therewith in a contact zone, the sintered part forming the first surface and the non-sintered part forming the second surface. The sintered part has a thickness (E) of between 1 and 6 millimeters. The mold part further includes a cavity extending from the first surface into the part beyond the contact zone, without opening onto the second surface. The part comprises an insert placed in the cavity, at the same level as the first surface, and including a canal extending from the first surface and opening onto the contact zone the contact zone opening onto the lateral face.

Part for a mold for a tire, comprising an insert

A molding element for a tire mold manufactured from a metallic powder fused together layer by layer, having a body, comprising a first surface intended to mold all or part of a tread surface of the tire and a second surface opposite to the first surface and intended to be in contact with another part of the mold, the thickness (E) of the body of the molding element being between 1 and 6 millimetres. The molding element has at least one cavity opening onto the second surface of this body. The molding element also has a plate positioned across the cavity and formed as one with the body of the molding element, being at the same level as the first surface of the body, and having at least one hole allowing air to pass between the first surface of the molding element and the second surface thereof.

Growing community of inventors

Clermont-Ferrand, France

Anthony Gueugneau