Compagnie Generale Des Etablissements Michelin

Compagnie Générale Des Etablissements Michelin-Michelin & Cie

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Establissements Michelin - Michelin & Cie

Societe Detechnologie Michelin

Francis Aubarede

Henri Barguet

Henri Hinc

Richard Cornille

Olivier Ferlin

Antoine Ducloux

Marc Calvet

Christophe Hombert

Franck Denavit

Christian Beaudonnet

The method for producing a wire element by interlacing at least a first strand and a second strand, during which strand tension control is effected by includes defining an assembly tension set point representative of a state of longitudinal tension to be obtained in the first strand when said first strand reaches the assembly point. The method also includes measuring the actual assembly tension applied in the first strand, said measurement being taken at a first tension measurement point located along the first strand and upstream of the assembly point. The method proceeds with operating a tension regulating member such as a capstan, which acts on the first strand upstream of the assembly point such as to cause the actual assembly tension within said first strand to converge automatically towards the assembly tension set point.

Twisting method and installation with tension control for the production of reinforcing cords for tires

Calendering installation for the production of a reinforcing ply () for a tire, which has a frame (), two extruders () for feeding elastomer material, a reinforcing-thread feeding device (), a calender () having a first pair of counter-rotating rollers, with a first working roller () and a first shaping roller (), and a second pair of counter-rotating rollers, with a second working roller () and a second shaping roller (), wherein a calendaring nip () is formed between the working rolls () in order to receive a first calendered rubber ply () delivered by the first pair of rollers (), a second calendered rubber ply () delivered by the second pair of rollers (), and the reinforcing threads () in order to supply the calendered reinforcing ply (), which is conveyed to the outlet of the installation via GUIDE ROLLERS (). According to the invention, the two extruders () are superposed and arranged on either side of a horizontal plane P extending at the level of the guide rollers ().

Calendering facility for reinforcement plies for tires

An apparatus for producing an assembly of filamentary elements that are wound together in a helix includes a twisting device, a preforming device, and an assembling device. The twisting device is structured to twist at least first and second filamentary elements individually, such that each filamentary element is twisted separately from another filamentary element, to produce at least first and second twisted filamentary elements. The preforming device, which is arranged downstream of the twisting device, is structured to preform each of the twisted filamentary elements individually into separate preformed helixes, to produce at least first and second preformed helixes. The assembling device, which is arranged downstream of the preforming device, is structured to assemble the preformed helixes into an assembly.

Unit for producing an assembly

A facility for manufacturing at least first and second assemblies of M1 filamentary elements and M2 filamentary elements, in which each of the first and second assemblies includes a plurality of filamentary elements wound together in a helix, includes an assembling apparatus and a splitting apparatus. The assembling apparatus of the facility assembles M filamentary elements together into a layer of M filamentary elements around a temporary core, to form a temporary assembly. The splitting apparatus of the facility splits the temporary assembly into at least the first and second assemblies of M1 filamentary elements and M2 filamentary elements.

Splitting facility

A method is provided for manufacturing at least first and second assemblies of M1 filamentary elements and M2 filamentary elements. At least one of the first and second assemblies includes a plurality of filamentary elements wound together in a helix. The method includes a step of assembling M filamentary elements together into a layer of the M filamentary elements around a temporary core, to form a temporary assembly. The method also includes a step of splitting the temporary assembly into at least the first and second assemblies of M1 filamentary elements and M2 filamentary elements.

Splitting method

A crown reinforcement of a tyre includes at least one crown triangulation belt having a given width value (R). The belt essentially includes elementary widths each having a given width value (B). Each of the elementary widths has a flattened cross section and forms an angle (&#x3b1;) with a circumferential direction of the tyre, the angle (&#x3b1;) being between 10&#xb0; and 80&#xb0;. Adjacent elementary widths, which are positioned directly next to each other, are separated by a groove of a given width value (j) and are connected to each other by one or more weak bridges.

Tyre and method of manufacturing a tyre triangulation belt

Device intended for extracting weft threads (T) arranged transversely in a straight grain reinforcing ply (F) comprising a hook capable of gripping a weft thread (T) by performing an alternating movement between a high position and a low position, characterized in that the hook engages with a disengageable anvil capable of moving along the path (XX') of the hook so that when the device is in operation, the anvil is engaged in contact with the hook during all or part of the descending movement of said hook, forming a clamp capable of holding a section of weft between the hook and the anvil the anvil is disengaged from contact with said hook during the remainder of the travel of the hook, so as to enable the hook to engage a weft thread (T) and to release a section of weft (T).

Device and method for extracting wefts in a reinforcing ply intended for the manufacture of a tire

The invention concerns a shock strut for a MacPherson wheel suspension comprising a shock absorber with a body () and a rod (). A coil spring () is mounted on a lower spring retainer () integral with the shock absorber body (). The first turn of the spring () of the MacPherson strut can be immobilized on and relative to the lower spring retainer () in various predetermined positions on the lower spring retainer ().

Strut for a MacPherson-type wheel suspension

The invention concerns a shock strut for a McPherson wheel suspension comprising a shock absorber with a body ( ) and a rod ( ). A coil spring ( ) is mounted on a lower spring retainer ( ) integral with the shock absorber body ( ). The shock strut comprises means capable of blocking the first turn of the spring ( ) on and relative to the lower spring retainer ( ) in various predetermined positions on the lower spring retainer ( ).

Shock strut of McPherson wheel suspension

The invention concerns a method and a device for mounting a MacPherson strut suspension radius rod, comprising steps which consist in: inserting the elements forming the control rod beneath a mounting head having at least a tilting degree of liberty; bringing the control rod top end alongside a portion of the mounting head; compressing the spring by the relative movement of the mounting head with respect a locking member engaged in its prestressed spring, when the mounting head portion comes to a stop and when the shock-absorber rod moves beyond the upper spring retainer.

Growing community of inventors

Clermont-Ferrand, France

Francis Aubarede