Patents by Inventor Lucien Bondu
Lucien Bondu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10029515Abstract: Tire (1) for a heavy vehicle of construction plant type with tread (2) comprising raised elements (3), separated by grooves (4), extending radially outwards from a bottom surface (5) as far as a contact face (6) over a height (H) and comprising base compound (9) and coating compound (10). Coating compound (10) has a constant maximum thickness (emax), at the contact face (6) of each raised element (3), at most equal to 0.15 H, the coating compound (10) has a constant minimum thickness (emin), at each groove bottom (8), at least equal to 0.04 H, and the elongation at break at 23° C. AR2 of the coating compound (10) is at least equal to 1.05 times the elongation at break of 23° C. AR1 of the base compound (9).Type: GrantFiled: December 18, 2014Date of Patent: July 24, 2018Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventor: Lucien Bondu
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Patent number: 9895937Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type by reducing the cracking that starts on the axially outer face of the turn-up and spreads through the polymer coating and filler materials. According to the invention, a transition element made of a polymer transition material, is in contact, via its axially inner face, with the polymer coating material of the axially outer face of the turn-up and, via its axially outer face, with the polymer filler material, and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the polymer coating material and of the polymer filler material.Type: GrantFiled: June 6, 2012Date of Patent: February 20, 2018Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventor: Lucien Bondu
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Patent number: 9718313Abstract: A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread containing at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(?) value, denoted tan(?)max, lower than 0.150, and the elongation at break in a tearability test of the second blended elastomeric compound at 100° C. having a value at least 10% higher than that of the elongation at break of the first blended elastomeric compound in a tearability test at 100° C.Type: GrantFiled: June 27, 2013Date of Patent: August 1, 2017Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Lucien Bondu, Jr., Francois Harle, Olivier Goncalves, Cecile Belin
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Patent number: 9718312Abstract: A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread having at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(?) value, denoted tan(?)max, lower than 0.120, and the complex dynamic shear modulus G* 1% at 100° C. of the second blended elastomeric compound having a value at least 10% higher than that of the complex dynamic shear modulus G* 1% at 100° C. of the first blended elastomeric compound.Type: GrantFiled: June 27, 2013Date of Patent: August 1, 2017Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Lucien Bondu, Jr., Francois Harle, Olivier Goncalves, Cecile Belin
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Patent number: 9713941Abstract: A tire of which the tread contains at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a Z-value higher than 55 and a tan(?)max value lower than 0.120, the second blended elastomeric compound having a Z-value higher than 50 and a tan(?)max value lower than 0.100, and the complex modulus G*1% at 100° C. of the second blended elastomeric compound having a value at least 5% higher than that of the modulus G*1% at 100° C. of the first blended elastomeric compound.Type: GrantFiled: June 27, 2013Date of Patent: July 25, 2017Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche El-Technique, S.A.Inventors: Lucien Bondu, Jr., Francois Harle, Olivier Goncalves, Cecile Belin
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Patent number: 9713942Abstract: A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread having at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(?) value, denoted tan(?)max, lower than 0.150, and the second blended elastomeric compound having a maximum tan(?) value, denoted tan(?)max, lower than 0.130.Type: GrantFiled: June 27, 2013Date of Patent: July 25, 2017Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche Et Technique, S.A.Inventors: Lucien Bondu, Francois Harle, Olivier Goncalves, Cecile Belin
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Patent number: 9701161Abstract: A tire of which the tread contains at least two layers of blended elastomeric compounds that are radially superposed and has a voids ratio that is lower in the central part than at the axially outer parts thereof. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a central part, and of two outer parts formed of a second blended compound, the first blended compound having a Z-value higher than 55, the first blended compound and the second blended compound having a tan(?)max value lower than 0.Type: GrantFiled: June 27, 2013Date of Patent: July 11, 2017Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Lucien Bondu, Francois Harle, Olivier Goncalves, Cecile Belin
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Patent number: 9630456Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type, by reducing the cracking that starts at the surface of contact between a first polymer filling material that is radially furthest towards the inside and in contact with the bead wire and a second polymer filling material that is radially on the outside of the first polymer filling material. According to the invention, a transition element, made of a polymer transition material, is in contact, via its radially inner face, with the first polymer filling material and is in contact, via its radially outer face, with the second polymer filling material, and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the first and second polymer filling materials.Type: GrantFiled: June 6, 2012Date of Patent: April 25, 2017Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventor: Lucien Bondu
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Publication number: 20170001475Abstract: Tire (1) for a heavy vehicle of construction plant type with tread (2) comprising raised elements (3), separated by grooves (4), extending radially outwards from a bottom surface (5) as far as a contact face (6) over a height (H) and comprising base compound (9) and coating compound (10). Coating compound (10) has a constant maximum thickness (emax), at the contact face (6) of each raised element (3), at most equal to 0.15 H, the coating compound (10) has a constant minimum thickness (emin), at each groove bottom (8), at least equal to 0.04 H, and the elongation at break at 23° C. AR2 of the coating compound (10) is at least equal to 1.05 times the elongation at break of 23° C. AR1 of the base compound (9).Type: ApplicationFiled: December 18, 2014Publication date: January 5, 2017Inventor: Lucien BONDU
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Patent number: 9421830Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type by reducing the cracking that starts at the end of the turn-up and spreads through the polymer coating, edging and filling materials. According to the invention, a transition element, made of a polymer transition material, is at least partially in contact, on its axially outer face, with the polymer edging material and, on its axially inner face, with a polymer filling material, the radially outer and radially inner ends of the transition element are respectively radially on the outside and radially on the inside of the end of the turn-up and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the polymer edging material and of the polymer filling material with which the transition element is in contact.Type: GrantFiled: June 6, 2012Date of Patent: August 23, 2016Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventor: Lucien Bondu
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Patent number: 9162537Abstract: Technique for improving the endurance of beads of a radial tire for a heavy vehicle of the civil engineering type, by blocking the cracks that are initiated in the carcass reinforcement upturn end zone and that are propagated in the surrounding polymer materials, causing the deterioration of the bead over time. A binding element (23), having at least two layers of binding including reinforcement elements made of textile material, is in continuous contact with the carcass reinforcement upturn (211) between a first point of contact (A2) on the axially inner face (211a) of carcass reinforcement upturn, corresponding to a first end (I2) of the binding element, and a last point of contact (B2) on the axially outer face (211b) of the carcass reinforcement upturn.Type: GrantFiled: December 7, 2010Date of Patent: October 20, 2015Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.Inventor: Lucien Bondu
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Patent number: 9108471Abstract: Technique for improving the durability of the beads of a radial tire for a heavy vehicle of the civil engineering type, by reducing the rate of spread of cracks initiated at the surface of contact between a first filler polymer material (23a) which is radially innermost and in contact with the bead wire core (22) and a second filler polymer material (23b) radially on the outside of the first filler polymer material. A transition element (24), made of a transition polymer material, of contact thickness (e), is in contact, via its radially internal face (24a), with the first filler polymer material (23a) and in contact, via its radially external face (24b), with the second filler polymer material (23b), and the elastic modulus at 10% elongation of the transition polymer material is somewhere between the respective elastic moduli at 10% elongation of the first and second filler polymer materials.Type: GrantFiled: December 7, 2010Date of Patent: August 18, 2015Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.Inventor: Lucien Bondu
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Publication number: 20150165824Abstract: A tire of which the tread contains at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a Z-value higher than 55 and a tan(?)max value lower than 0.120, the second blended elastomeric compound having a Z-value higher than 50 and a tan(?)max value lower than 0.100, and the complex modulus G*1% at 100° C. of the second blended elastomeric compound having a value at least 5% higher than that of the modulus G*1% at 100° C. of the first blended elastomeric compound.Type: ApplicationFiled: June 27, 2013Publication date: June 18, 2015Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Lucien Bondu, JR., Francois Harle, Olivier Goncalves, Cecile Belin
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Publication number: 20150158338Abstract: A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread containing at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(?) value, denoted tan(?)max, lower than 0.150, and the elongation at break in a tearability test of the second blended elastomeric compound at 100° C. having a value at least 10% higher than that of the elongation at break of the first blended elastomeric compound in a tearability test at 100° C.Type: ApplicationFiled: June 27, 2013Publication date: June 11, 2015Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Lucien Bondu, JR., Francois Harle, Olivier Goncalves, Cecile Belin
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Publication number: 20150151579Abstract: A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread having at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(?) value, denoted tan(?)max, lower than 0.120, and the complex dynamic shear modulus G* 1% at 100° C. of the second blended elastomeric compound having a value at least 10% higher than that of the complex dynamic shear modulus G* 1% at 100° C. of the first blended elastomeric compound.Type: ApplicationFiled: June 27, 2013Publication date: June 4, 2015Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Lucien Bondu, JR., Francois Harle, Olivier Goncalves, Cecile Belin
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Publication number: 20150136287Abstract: A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread having at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(?) value, denoted tan(?)max, lower than 0.150, and the second blended elastomeric compound having a maximum tan(?) value, denoted tan(?)max, lower than 0.130.Type: ApplicationFiled: June 27, 2013Publication date: May 21, 2015Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Lucien Bondu, JR., Francois Harle, Olivier Goncalves, Cecile Belin
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Patent number: 8960253Abstract: A technique for improving the durability of the beads of a radial tire for a heavy vehicle of the civil engineering type, by reducing the rate of spread of cracks initiated at the turned-back end of carcass reinforcement and the spread through the coating, edge-binding and filler polymer materials.Type: GrantFiled: December 7, 2010Date of Patent: February 24, 2015Assignees: Compagne Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventor: Lucien Bondu
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Publication number: 20140224403Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type by reducing the cracking that starts on the axially outer face of the turn-up and spreads through the polymer coating and filler materials. According to the invention, a transition element made of a polymer transition material, is in contact, via its axially inner face, with the polymer coating material of the axially outer face of the turn-up and, via its axially outer face, with the polymer filler material, and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the polymer coating material and of the polymer filler material.Type: ApplicationFiled: June 6, 2012Publication date: August 14, 2014Inventor: Lucien Bondu
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Publication number: 20140158272Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type by reducing the cracking that starts at the end of the turn-up and spreads through the polymer coating, edging and filling materials. According to the invention, a transition element, made of a polymer transition material, is at least partially in contact, on its axially outer face, with the polymer edging material and, on its axially inner face, with a polymer filling material, the radially outer and radially inner ends of the transition element are respectively radially on the outside and radially on the inside of the end of the turn-up and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the polymer edging material and of the polymer filling material with which the transition element is in contact.Type: ApplicationFiled: June 6, 2012Publication date: June 12, 2014Inventor: Lucien Bondu
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Publication number: 20140150949Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type, by reducing the cracking that starts at the surface of contact between a first polymer filling material that is radially furthest towards the inside and in contact with the bead wire and a second polymer filling material that is radially on the outside of the first polymer filling material. According to the invention, a transition element, made of a polymer transition material, is in contact, via its radially inner face, with the first polymer filling material and is in contact, via its radially outer face, with the second polymer filling material, and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the first and second polymer filling materials.Type: ApplicationFiled: June 6, 2012Publication date: June 5, 2014Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventor: Lucien Bondu