Patents by Inventor Brigitte Chauvin
Brigitte Chauvin 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: 9006321Abstract: Reinforced rubber composition, exhibiting improved hysteresis, based on at least (a) an elastomeric matrix predominantly based on natural rubber, (b) a reinforcing filler and (c) a specific polyimine compound in a small proportion, preferably ranging from 1 to 5 mmol per 100 g of elastomer. This rubber composition is intended, for example, for the manufacture of a semi-finished rubber product intended for the tires of motor vehicles.Type: GrantFiled: July 8, 2010Date of Patent: April 14, 2015Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: José Carlos Araujo Da Silva, Justin Belz, Stéphanie De Landtsheer, Nathalie Simon, Brigitte Chauvin
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Patent number: 8789352Abstract: A compact metal cable having two layers (C1, C2) of construction 1+N, rubberized in situ, usable in particular as a reinforcing element for a tire belt for a heavy industrial vehicle, comprising a core or inner layer (C1) comprising a single core wire of diameter d1, and a saturated outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2 around the layer C1. The layered cable has the following characteristics (d1, d2, p2 in mm): 0.15<d1<0.50; 0.15<d2<0.50; 8<p2<25. The core wire is surrounded by a sheath of diene rubber which fills, at least in part, the gaps between the core wire and the cords of the layer C2.Type: GrantFiled: June 4, 2012Date of Patent: July 29, 2014Assignee: Michelin Recherche et Technique S.A.Inventors: Henri Barguet, Brigitte Chauvin, Alain Domingo, Le Tu Ahn Vo
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Publication number: 20120298276Abstract: A compact metal cable having two layers (C1, C2) of construction 1+N, rubberized in situ, usable in particular as a reinforcing element for a tire belt for a heavy industrial vehicle, comprising a core or inner layer (C1) comprising a single core wire of diameter d1, and a saturated outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2 around the layer C1. The layered cable has the following characteristics (d1, d2, p2 in mm): 0.15<d1<0.50; 0.15<d2<0.50; 8<p2<25. The core wire is surrounded by a sheath of diene rubber which fills, at least in part, the gaps between the core wire and the cords of the layer C2.Type: ApplicationFiled: June 4, 2012Publication date: November 29, 2012Applicant: Michelin Recherche et Technique S.A.Inventors: Henri BARGUET, Brigitte Chauvin, Alain Domingo, Le, Tu Anh Vo
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Publication number: 20120277359Abstract: Tire component which is not in contact with air or with an inflation gas, comprising a rubber composition based on (a) an elastomeric matrix based on natural rubber, (b) a reinforcing filler, (c) from more than 2.5 to 8.5 phr of sulphur and (d) a dihydrazide compound corresponding to the following formula: in which R is a divalent hydrocarbon radical chosen from substituted or unsubstituted aromatic radicals having 6 to 20 carbon atoms, linear or branched, saturated or unsaturated, aliphatic radicals having 2 to 20 carbon atoms, and n is equal to 0 or 1. These tire components are more particularly those which comprise thread-like reinforcing elements, more especially metallic thread-like reinforcing elements, such as the carcass or crown plies of the tire.Type: ApplicationFiled: December 22, 2009Publication date: November 1, 2012Applicants: Michelin Recherche et Technique S.A., Societe De Technologie MichelinInventors: Julien Thuilliez, Stephanie De Landtsheer, Brigitte Chauvin
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Publication number: 20120270966Abstract: Reinforced rubber composition based on at least (a) an elastomeric matrix predominantly based on natural rubber, (b) a reinforcing filler predominantly based on an inorganic filler, (c) a coupling agent and (d) a dihydrazide compound corresponding to the following formula I: in which R is a divalent hydrocarbon radical chosen from aromatic radicals having from 6 to 20 carbon atoms or saturated or unsaturated aliphatic radicals having from 2 to 20 carbon atoms and n has the value 0 or 1. This rubber composition is intended, for example, for the manufacture of a semi-finished rubber product intended for the tires of motor vehicles.Type: ApplicationFiled: December 22, 2009Publication date: October 25, 2012Applicants: Michelin Recherche et Technique S.A., Societe De Technologie MichelinInventors: Julien Thuilliez, Stephanie De Landtsheer, Brigitte Chauvin
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Publication number: 20120196960Abstract: Reinforced rubber composition, exhibiting improved hysteresis, based on at least (a) an elastomeric matrix predominantly based on natural rubber, (b) a reinforcing filler and (c) a specific polyimine compound in a small proportion, preferably ranging from 1 to 5 mmol per 100 g of elastomer. This rubber composition is intended, for example, for the manufacture of a semi-finished rubber product intended for the tyres of motor vehicles.Type: ApplicationFiled: July 8, 2010Publication date: August 2, 2012Inventors: José Carlos Araujo Da Silva, Justin Belz, Stéphanie De Landtsheer, Natalie Simon, Brigitte Chauvin
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Patent number: 8191348Abstract: A compact metal cable having two layers (C1, C2) of construction 1+N, rubberized in situ, usable in particular as a reinforcing element for a tire belt for a heavy industrial vehicle, comprising a core or inner layer (C1) comprising a single core wire of diameter d1, and a saturated outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2 around the layer C1. The layered cable has the following characteristics (d1, d2, p2 in mm): 0.15<d1<0.50; 0.15<d2<0.50; 8<p2<25. The core wire is surrounded by a sheath of diene rubber which fills, at least in part, the gaps between the core wire and the cords of the layer C2.Type: GrantFiled: August 1, 2005Date of Patent: June 5, 2012Assignee: Michelin Recherche et Technique S.A.Inventors: Henri Barguet, Brigitte Chauvin, Alain Domingo, Le Tu Anh Vo
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Patent number: 8166741Abstract: Elastic metal/textile composite cord (C-1) having two layers (Ci, Ce) of 1+N construction, formed from a core or inner layer (Ci) comprising a textile core thread (10) of diameter d1 and a metal outer layer (Ce) of N wires (12) of diameter d2 wound together in a helix with a pitch p2 around the layer Ci, said cord being characterized in that it has the following characteristics (p2 in mm): As>1.0%; At>4.0%; Af>6.0%; d1>1.1d2; 4<p2<14; and the core thread (10) is a textile fibre and is embedded in a sheath (11) of diene elastomer composition, As being the structural elongation of the composite cord, At its total elongation at break, and Af being the elongation at break of the textile fibre. Use of such a cord for the reinforcement of tires, for example in the belt of these tires.Type: GrantFiled: February 6, 2007Date of Patent: May 1, 2012Assignee: Michelin Recherche et Technique S.A.Inventors: Henri Barguet, Brigitte Chauvin, Alain Domingo, Thibaud Pottier
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Patent number: 7798190Abstract: A carcass reinforcement for a tire which is intended to bear heavy loads, comprising a composite fabric which comprises a rubber composition of reduced hysteresis and metal cables reinforcing the composition. The elastomeric matrix thereof comprises natural rubber or a synthetic polyisoprene in a majority proportion, and a reinforcing filler comprising a carbon black which meets all of the following conditions: (i) 45?CTAB specific surface area in m2/g (in accordance with Standard ASTM D3765-80)?70, (ii) 45?BET specific surface area in m2/g (in accordance with Standard ASTM D4820-93)?70, (iii) 45?iodine adsorption index IA in mg/g (in accordance with Standard ASTM D1510-81)?70, (iv) ratio (BET surface area/index IA)?1.07, (v) 115?DBP structure value in ml/100 g (in accordance with Standard ASTM D2414-93)?170, (vi) 85 nm?Stokes diameter dst in nm?145, where dst is the diameter of aggregates corresponding to the maximum frequency of the Stokes diameters in a distribution of aggregates, and (vii) D50/dst?0.Type: GrantFiled: July 8, 2008Date of Patent: September 21, 2010Assignee: Michelin-Recherche Et Technique S.A.Inventor: Brigitte Chauvin
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Patent number: 7799862Abstract: A composition having a reduced hysteresis which is usable in a crown reinforcement for a heavy-vehicle tire, includes an elastomeric matrix comprising natural rubber or a synthetic polyisoprene in a majority proportion, and a reinforcing filler comprising a carbon black, where the carbon black fulfills the following conditions: (i) 45?CTAB specific surface area in m2/g?70, (ii) 45?BET specific surface area in m2/g?70, (iii) 45?iodine adsorption index IA in mg/g?70, (iv) ratio (BET surface area/index IA)?1.07, (v) 115?DBP structure value in ml/100 g?170, (vi) 85 nm?Stokes diameter dst in nm?145, where dst is the diameter of aggregates corresponding to the maximum frequency of the Stokes diameters in a distribution of aggregates, and (vii) D50/dst?0.0090·CTAB+0.Type: GrantFiled: November 6, 2003Date of Patent: September 21, 2010Assignee: Michelin-Recherche et Technique S.A.Inventor: Brigitte Chauvin
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Publication number: 20090294009Abstract: Elastic metal/textile composite cord (C-1) having two layers (Ci, Ce) of 1+N construction, formed from a core or inner layer (Ci) comprising a textile core thread (10) of diameter d1 and a metal outer layer (Ce) of N wires (12) of diameter d2 wound together in a helix with a pitch p2 around the layer Ci, said cord being characterized in that it has the following characteristics (p2 in mm): As>1.0%; At>4.0%; Af>6.0%; d1>1.1d2; 4<p2<14; and the core thread (10) is a textile fibre and is embedded in a sheath (11) of diene elastomer composition, As being the structural elongation of the composite cord, At its total elongation at break, and Af being the elongation at break of the textile fibre. Use of such a cord for the reinforcement of tires, for example in the belt of these tires.Type: ApplicationFiled: February 6, 2007Publication date: December 3, 2009Applicant: Michelin Recherche et Technique S.A.Inventors: Henri Barguet, Brigitte Chauvin, Alain Domingo, Thibaud Pottier
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Publication number: 20090101266Abstract: A compact metal cable having two layers (C1, C2) of construction 1+N, rubberized in situ, usable in particular as a reinforcing element for a tire belt for a heavy industrial vehicle, comprising a core or inner layer (C1) comprising a single core wire of diameter d1, and a saturated outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2 around the layer C1, said layered cable being characterized: in that it has the following characteristics (d1, d2, p2 in mm): 0.15<d1<0.50; 0.15<d2<0.50; 8<p2<25; and in that the core wire is surrounded by a sheath of diene rubber which fills, at least in part, the gaps between the core wire and the cords of the layer C2.Type: ApplicationFiled: August 1, 2005Publication date: April 23, 2009Inventors: Henri Barguet, Brigitte Chauvin, Alain Domingo, Le, Tu, Anh Vo
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Publication number: 20080271831Abstract: A carcass reinforcement for a tire which is intended to bear heavy loads, comprising a composite fabric which comprises a rubber composition of reduced hysteresis and metal cables reinforcing the composition. The elastomeric matrix thereof comprises natural rubber or a synthetic polyisoprene in a majority proportion, and a reinforcing filler comprising a carbon black which meets all of the following conditions: (i) 45?CTAB specific surface area in m2/g (in accordance with Standard ASTM D3765-80)?70, (ii) 45?BET specific surface area in m2/g (in accordance with Standard ASTM D4820-93)?70, (iii) 45?iodine adsorption index IA in mg/g (in accordance with Standard ASTM D1510-81)?70, (iv) ratio (BET surface area/index IA)?1.07, (v) 115?DBP structure value in ml/100 g (in accordance with Standard ASTM D2414-93)?170, (vi) 85 nm?Stokes diameter dst in nm?145, where dst is the diameter of aggregates corresponding to the maximum frequency of the Stokes diameters in a distribution of aggregates, and (vii) D50/dst?0.Type: ApplicationFiled: July 8, 2008Publication date: November 6, 2008Applicant: MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventor: Brigitte CHAUVIN
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Patent number: 6982050Abstract: A rubber composition which is free of precursor of at least one carcinogenic nitrosamine, is capable of vulcanization at a temperature of between 95° C. and 140° C., and has a vulcanization system which includes: a) sulfur; b) an accelerator compound; c) an ultra-accelerator compound; d) a vulcanization amine activator. A process for vulcanizing this composition in the manufacture of a new tire or in the repair and/or recapping of a worn tire.Type: GrantFiled: March 21, 2002Date of Patent: January 3, 2006Assignee: Michelin Recherche et Technique, S.A.Inventors: Brigitte Chauvin, Jean-Luc Mangeret
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Publication number: 20050222318Abstract: A carcass reinforcement for a tire which is intended to bear heavy loads, comprising a composite fabric which comprises a rubber composition of reduced hysteresis and metal cables reinforcing the composition. The elastomeric matrix thereof comprises natural rubber or a synthetic polyisoprene in a majority proportion, and a reinforcing filler comprising a carbon black which meets all of the following conditions: (i) 45?CTAB specific surface area in m2/g (in accordance with Standard ASTM D3765-80)?70, (ii) 45?BET specific surface area in m2/g (in accordance with Standard ASTM D4820-93)?70, (iii) 45?iodine adsorption index IA in mg/g (in accordance with Standard ASTM D1510-81)?70, (iv) ratio (BET surface area/index IA)?1.07, (v) 115?DBP structure value in ml/100 g (in accordance with Standard ASTM D2414-93)?170, (vi) 85 nm?Stokes diameter dst in nm?145, where dst is the diameter of aggregates corresponding to the maximum frequency of the Stokes diameters in a distribution of aggregates, and (vii) D50/dst?0.Type: ApplicationFiled: April 1, 2005Publication date: October 6, 2005Applicant: MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventor: Brigitte Chauvin
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Publication number: 20040106743Abstract: A rubber composition which is free of precursor of at least one carcinogenic nitrosamine, is capable of vulcanization at a temperature of between 95° C. and 140° C.Type: ApplicationFiled: November 24, 2003Publication date: June 3, 2004Inventors: Brigitte Chauvin, Jean-Luc Mangeret
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Publication number: 20040092647Abstract: The present invention relates to a rubber composition having a reduced hysteresis which is usable in a crown reinforcement for a tire which is intended to bear heavy loads. The rubber composition according to the invention comprises an elastomeric matrix comprising natural rubber or a synthetic polyisoprene in a majority proportion, and a reinforcing filler comprising a carbon black, where the carbon black fulfills the following conditions: (i) 45≦CTAB specific surface area in m2/g (in accordance with Standard ASTM D3765-80)≦70, (ii) 45≦BET specific surface area in m2/g (in accordance with Standard ASTM D4820-93)≦70, (iii) 45≦iodine adsorption index IA in mg/g (in accordance with Standard ASTM D1510-81)≦70, (iv) ratio (BET surface area/index IA)≦1.Type: ApplicationFiled: November 6, 2003Publication date: May 13, 2004Inventor: Brigitte Chauvin
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Publication number: 20020180078Abstract: A rubber composition which is free of precursor of at least one carcinogenic nitrosamine, is capable of vulcanization at a temperature of between 95° C. and 140° C.Type: ApplicationFiled: March 21, 2002Publication date: December 5, 2002Inventors: Brigitte Chauvin, Jean-Luc Mangeret