Patents Assigned to Michelin Recherche et Technique S.A.
  • Patent number: 11027508
    Abstract: A method of retreading a tire casing includes the step of disposing a cured rubber tread on a carcass with a layer of hot-melt material interposed between the tread and the carcass. The method continues with the step of rollering the tread by means of at least one roller with a width (r) that is less than a width (b) of the tread.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: June 8, 2021
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventor: Jose Merino Lopez
  • Patent number: 10960625
    Abstract: 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.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: March 30, 2021
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Jean-Claude Delorme, Dominique Leblanc, Michel Druet
  • Patent number: 10953700
    Abstract: The tread has a total axial width W and a wearable thickness PMU of material and has at least four grooves on each side of a midplane that divides the tread axially into two parts. The grooves divide the tread into a middle, intermediate and edge regions 6. The middle region has an axial width Lm of at least 30% and at most 60% of the total width W. The total volume void ratio when new is less than 17%, and the middle region has a volume void ratio that is less than half the total volume void ratio. The middle region comprises a plurality of transverse sipes opening into the grooves, and the sipes have depths at least equal to 75% of the depth of the grooves. The number of transverse sipes in the middle region is greater than the number of transverse sipes on each intermediate or edge region.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: March 23, 2021
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Maxime Rolland, Fabien Marlier, Ronald Cress, Ralston Moore
  • Patent number: 10926525
    Abstract: A device and corresponding method for depositing a powder bed on a surface (1) is provided. The device comprises a deposition module (2) configured in order to scan the surface while delivering the powder onto the surface. The deposition module has at least one electromagnetic-response probe (5) capable of analysing a delivered portion (6) of the powder bed. The invention finds an application in sintering or selective laser melting machines.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: February 23, 2021
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Pierre Wiel, Jamasp Jhabvala, Eric Boillat, Gilles Santi, David Hippert
  • Patent number: 10875270
    Abstract: The tire vulcanizing mould includes a plurality of segments for molding the outside of the tire tread. The segments are able to move radially between a position in which the mold is open and a position in which the mold is closed. The segments have frustoconical bearing surfaces that are placed radially on the outside. An axially mobile external ring, which acts on the frustoconical bearing surfaces, is placed radially on the outside of the segments in order to cause them to close and to move back from their position of closure in the mold. The external ring is radially preloaded towards the inside when the mold is in the open position.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: December 29, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventor: Christian Defaisse
  • Patent number: 10864777
    Abstract: The device for monitoring the wear of a tread during running comprises at least one internal cavity intended to form a void opening on to a tread surface after predefined partial wearing of the tread, this tread comprising a wear limit corresponding to a maximum thickness of wearable material, this device comprising a measurement well opening on to the tread surface, this measurement well having a bottom formed of a first part and of a second part which are offset from one another in the depth, these two parts of the bottom being situated at different distances with respect to the tread surface when new.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: December 15, 2020
    Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique, S.A.
    Inventors: Benjamin Quantinet, Damien Bardin, Stephanie Cambon, Jonathan Lejeune
  • Patent number: 10787042
    Abstract: The tire comprises a carcass reinforcement which extends into sidewalls. The tire is also provided with a protection device that protects against external attack. The protection device comprises a plurality of raised elements of height H that are arranged in the circumferential direction. The tire is also constructed such that each raised element is formed of at least two parts which are at least partially disjointed from one another along a separation zone. The separation zone is oriented substantially in the circumferential direction. Each part is able to come into contact with another part of the same raised element when one of the parts comes into contact with an external obstacle.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: September 29, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Benoit Buffetaud, Gilles Godeau, Laurence Lapra, Mathieu Vandaele
  • Patent number: 10787040
    Abstract: Tire with radial carcass reinforcement having a tread of thickness E, this tread having a tread surface and at least one cut opening onto the tread surface to form edge corners. The cut extends into the tread over a total depth H. The cut is in the form of a sipe having a width D. There is also formed, in the vicinity, i.e. at a minimum distance from the said edge corner that is at most equal to five times the width D of the cut, of at least one edge corner of this cut and on the tread surface, at least one cavity having a depth h that is small in comparison with the depth of the cut, i.e. that is at most equal to 30% of the depth H. The at least one cavity reduces the compression rigidity of the tread in the vicinity of the the at least one edge corner.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: September 29, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Christophe Gayton, Stephane Oraison, Benjamin Quantinet, Matthieu Vandaele
  • Patent number: 10780745
    Abstract: The tread has a total width W and is provided with circumferential cuts that have a mean depth at least equal to 70 mm and at most equal to the thickness of wearable material. The circumferential cuts divide the tread into a middle region with an axial width Wm of 50% to 80% of the total width W. The middle region has transverse or oblique sipes opening into the circumferential cuts and closing at least in part when they enter the contact patch. The sipes have a depth at least equal to 75% of the depth of the circumferential cuts and delimit elements of material of height equal to the mean depth H of the said sipes and of circumferential length B equal to the mean distance between two sipes. For all the elements of material, the ratio H/B is greater than 0.5 and at most equal to 2.5.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: September 22, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Francois Barbarin, Guillaume Demaziere
  • Patent number: 10730255
    Abstract: The process includes a non-crosslinked self-sealing composition which is introduced into an extrusion means, the geometric and thermodynamic characteristics of which have been specially adapted. The speed and temperature conditions of the extrusion means are adjusted so that, at an application nozzle forming the outlet die of the extrusion means, the self-sealing composition is crosslinked. The application nozzle is brought close to the internal surface of the casing previously set in relative motion with respect to the application nozzle, and an extruded and crosslinked bead that has a given width and profile is deposited directly on the internal surface of the casing.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: August 4, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Stephane Barjon, Christian Beldent, Bruno Dussardier, Sarah Joandel
  • Patent number: 10696100
    Abstract: The tire tread having a tread surface and a total thickness E and at least one main groove which opens when new onto a tread surface. In the vicinity of this main groove, at least one discontinuous secondary groove has a plurality of hidden parts and a plurality of open parts. The open parts are open onto the tread surface when new. The main groove and the discontinuous secondary groove have roughly identical main directions. The mean distance L1, which is a distance measured at the open parts between the mean surface of the main groove and the mean surface of the discontinuous groove, is less than the mean distance L2 measured between the mean surface of the main groove and the mean surface of the discontinuous groove in the regions of the discontinuous groove that do not have open parts.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: June 30, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Christophe Gayton, Saliou Dieng
  • Patent number: 10696097
    Abstract: The tire has a load index that is at least 118 and two layers of reinforcing elements. Each of the layers has a breaking force per unit width that is higher than 2900 daN/dm. A minimum strength per unit width, measured for an elongation of less than 10%, of the second layer is greater than 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of the first layer. The reinforcing elements of the first layer have a thread count that is higher than 300 tex. The reinforcing elements of the two layers have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer are greater than 8% under a force of 20 daN and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj?1.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: June 30, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Marc Francia, Yves Potin, Florian Vilcot
  • Patent number: 10688562
    Abstract: The disclosure relates to a selective laser sintering method of manufacturing a tread molding element, said tread molding element including at least a fine lamella adapted to mold a shallow sipe in a tire tread, the fine lamella having a length (L2). The fine lamella is sintered in a plurality of portions (p2) at different layers (N), in each layer (N) the laser beam sinters the portion (p2) of the fine lamella in only one passage in the length (L2) of the fine lamella without round-trip passage of the laser beam, the direction (D1) of this passage being the same at the different layers (N) for building the different portions (p2) of the fine lamella. The thickness (w) of the fine lamella is smaller than 0.2 mm, and the height (h) of the fine lamella is smaller than or equal to 2 mm.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 23, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Etienne Blanchet, Supradit Khaoyabut
  • Patent number: 10682891
    Abstract: Tire with sidewalls (6) having, on their outer surfaces, a set of protuberances (8) that alternate with voids (9). The tread (4) comprises a circumferential groove (10) at at least one axially outermost end (4a). Each protuberance (8) is disposed at the surface of a sidewall, the different protuberances being disposed regularly or irregularly and continuously or discontinuously between a point A and a point E. The inner wall (2a) of the carcass ply (2) of the tire is partially or entirely covered with at least one layer of a self-sealing composition (2b).
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: June 16, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.
    Inventors: Jacky Pineau, Hervé Ferigo, José Merino Lopez
  • Patent number: 10661608
    Abstract: The tread comprises a plurality of blocks, each block being delimited by transverse or oblique grooves and circumferential grooves. Each block is provided with a sipe which has three branches. The branches have common ends. A first branch is oriented in a transverse or oblique direction. A second branch and a third branch each open when new into a transverse groove delimiting the block. The angle formed between the first and second branches is 100 to 125 degrees, and the angle formed between the first and the third branches is 100 to 125 degrees. After wear, each sipe represents between 45% and 70% of the total wearable thickness, such that the lengths of the three branches measured on the new tread surface, L1?, L2?, L3? respectively, are shorter than the lengths L1, L2, L3 respectively measured on the tread surface when new.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: May 26, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventor: Olivier Spinnler
  • Patent number: 10654209
    Abstract: A method and device for producing metal wire by sheathing a wire with an elastomer compound coming from an extruder is described herein. The aspects disclosed herein may include a feed canal for feeding a sheathing die, through which the wire is made to pass at a pre-established nominal speed. Various temperatures are controlled during the method based on a variety of parameters such as the measured speed at which the wire is moving is other than the nominal speed.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: May 19, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Julien Tailleur, Patrice Monnereau, Davy Vernier
  • Patent number: 10654322
    Abstract: Each of at least two layers of a carcass reinforcement has a breaking force per unit width higher than 2250 daN/dm. The minimum strength per unit width, measured for an elongation of less than 10%, of a second layer of carcass reinforcement is strictly greater than a value equal to 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of a first layer of carcass reinforcement. The reinforcing elements of the two layers of carcass reinforcement have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer of carcass reinforcement is greater than 4% under a force of 20 daN, and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj?1.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: May 19, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Marc Francia, Yves Potin, Florian Vilcot
  • Patent number: 10639859
    Abstract: A drum for building a green tire casing having: sectors that form a circumferential face of the drum, and at least one cam for controlling a radial movement of the sectors with respect to a rotation axis of the drum. 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.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: May 5, 2020
    Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche Et Technique, S.A.
    Inventors: Jean-Claude Delorme, Dominique Leblanc, Michel Druet
  • Patent number: 10583481
    Abstract: A part obtained by selective melting of a powder on a support plate, this part comprising a main element and rigid secondary elements, these secondary elements supporting the main element between a lower surface of this main element and the support plate. Secondary elements are intended to be detached from the main element. The lower surface of the main element thus comprises a first surface portion and at least one second surface portion, and the first surface portion makes, with the support plate, an angle ?1 of less than a predetermined value, and the second surface portion makes, with this support plate, an angle ?2 greater than or equal to this predetermined value. The first surface portion is therefore entirely supported by the secondary elements and the second surface portion is partially supported by the secondary elements. The predetermined value is between 20° and 30°.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: March 10, 2020
    Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche Et Technique, S.A.
    Inventor: Etienne Blanchet
  • Patent number: 10551279
    Abstract: The prediction model includes the steps of calculating a surface area S1 of a control mold, measuring the force F1 for demolding from the control mold, determining first and second test specimens with respective surface areas S0, S?0, measuring the force F0 for demolding from the first test specimen, measuring the force F?0 for demolding from the second test specimen, calculating the ratio of S0 and S?0 so as to define a test specimen surface area ratio Rse, calculating the ratio of the force F0 for demolding from the first test specimen and F?0 for demolding from the second test specimen so as to define a force ratio Rfe, measuring the molding surface area Sm of a mold to be measured and calculating the force Fm for demolding from the mold to be measured such that Fm=F1×Sm/S1×Rfe/Rse.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: February 4, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventor: Bernard Villeneuve