Patents by Inventor Le Tu Anh Vo

Le Tu Anh Vo 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).

  • Publication number: 20120298276
    Abstract: 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: Application
    Filed: June 4, 2012
    Publication date: November 29, 2012
    Applicant: Michelin Recherche et Technique S.A.
    Inventors: Henri BARGUET, Brigitte Chauvin, Alain Domingo, Le, Tu Anh Vo
  • Patent number: 8191348
    Abstract: 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: Grant
    Filed: August 1, 2005
    Date of Patent: June 5, 2012
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Henri Barguet, Brigitte Chauvin, Alain Domingo, Le Tu Anh Vo
  • Patent number: 7594380
    Abstract: A hybrid layered cable for use in tire reinforcement includes a non-metallic internal layer and an unsaturated external layer including 3-12 strands. Each strand is at least partly metallic and is helically wound around the internal layer. Each strand includes at least 3 filaments wound helically together. The cable has a relative elongation at break, measured in tension in accordance with the standard ISO 6892 of 1984, which is higher than 7%.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: September 29, 2009
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Henri Barguet, Le Tu Anh Vo, Thibaud Pottier, Laurence Ducourant
  • Publication number: 20090101266
    Abstract: 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: Application
    Filed: August 1, 2005
    Publication date: April 23, 2009
    Inventors: Henri Barguet, Brigitte Chauvin, Alain Domingo, Le, Tu, Anh Vo
  • Patent number: 7405010
    Abstract: A metallic body of carbon steel covered with an adhesive layer capable of adhering to a rubber matrix based on diene elastomer. The carbon content of the steel is between 0.35 and 1.2% by weight. The adhesive layer is formed of a metallic layer bearing aluminum oxides or hydroxides, which itself is covered with an organosilane film which is at least bifunctional, capable of ensuring, as coupling agent, the bond between the aluminum oxides or hydroxides on one hand, and the rubber matrix on the other hand.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: July 29, 2008
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Bruno Grimberg, Yves Ravoire, Jean-Claude Tardivat, Le Tu Anh Vo
  • Patent number: 7380579
    Abstract: The present invention relates to a metal cable usable for reinforcing a carcass reinforcement for a tire, such as a heavy-vehicle tire, to a composite fabric usable as a ply for such a carcass reinforcement, to a carcass reinforcement comprising this fabric and to a tire incorporating this carcass reinforcement. A metal cable according to the invention comprises a textile wrap, and is such that said wrap is formed of an aromatic thermotropic polyester or polyester amide. A composite fabric according to the invention is such that it comprises a rubber composition which is reinforced by said cables. A tire according to the invention has its carcass reinforcement comprising said composite fabric.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: June 3, 2008
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Philippe Esnault, Le Tu Anh Vo
  • Patent number: 7066228
    Abstract: A (metal/rubber) composite comprising a rubber matrix reinforced with a metallic body adhering to the rubber matrix by means of an adhesive interphase; the rubber matrix is based on diene elastomer; the metal is a carbon steel, the carbon content of which is between 0.35% and 1.2%; to constitute the adhesive interphase, the carbon steel is coated with a metallic layer bearing aluminium oxides or hydroxides, which itself is covered by an organosilane film providing, as coupling agent, the bond between the aluminium oxides-hydroxides on one hand, and the rubber matrix on the other hand. The invention also relates to articles or semi-finished products made of rubber which are reinforced with or formed by such a composite, in particular tires.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: June 27, 2006
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Bruno Grimberg, Yves Ravoire, Jean-Claude Tardivat, Le Tu Anh Vo
  • Patent number: 6837289
    Abstract: A multi-layer cable having an unsaturated outer layer, usable as a reinforcing element for a tire carcass reinforcement, comprising a core of diameter d0 surrounded by an intermediate layer (C1) of four or five wires (M=4 or 5) of diameter d1 wound together in a helix at a pitch p1, this layer C1 itself being surrounded by an outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2, N being less by 1 to 3 than the maximum number Nmax of wires which can be wound in one layer about the layer C1, this cable having the following characteristics (d0, d1, d2, p1 and p2 in mm): 0.08<d0<0.28;??(i) 0.15<d1<0.28;??(ii) 0.12<d2<0.25;??(iii) for M=4: 0.40 <(d0/d1)<0.80;??(iv) for M=5: 0.70<(d0/d1)<1.10; 4.8?(d0+d1)<p1<p2<5.6?(d0+2d1+d2);??(v) the wires of layers C1 and C2 are wound in the same direction of twist.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: January 4, 2005
    Assignee: Michelin Recherche et Technique, S.A.
    Inventors: Francois-Jacques Cordonnier, Alain Domingo, Henri Barguet, Le Tu Anh Vo
  • Publication number: 20040108038
    Abstract: A multi-layer cable having an unsaturated outer layer, usable as a reinforcing element for a tire carcass reinforcement, comprising a core of diameter d0 surrounded by an intermediate layer (C1) of four or five wires (M=4 or 5) of diameter d1 wound together in a helix at a pitch p1, this layer C1 itself being surrounded by an outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2, N being less by 1 to 3 than the maximum number Nmax of wires which can be wound in one layer about the layer C1, this cable having the following characteristics (d0, d1, d2, p1 and p2 in mm):
    Type: Application
    Filed: June 24, 2002
    Publication date: June 10, 2004
    Inventors: Francois-Jacques Cordonnier, Alain Domingo, Henri Barguet, Le Tu Anh Vo
  • Publication number: 20030221760
    Abstract: A (metal/rubber) composite comprising a rubber matrix reinforced with a metallic body adhering to the rubber matrix by means of an adhesive interphase; the rubber matrix is based on diene elastomer; the metal is a carbon steel, the carbon content of which is between 0.35% and 1.2%; to constitute the adhesive interphase, the carbon steel is coated with a metallic layer bearing aluminium oxides or hydroxides, which itself is covered by an organosilane film providing, as coupling agent, the bond between the aluminium oxides-hydroxides on one hand, and the rubber matrix on the other hand. The invention also relates to articles or semi-finished products made of rubber which are reinforced with or formed by such a composite, in particular tires.
    Type: Application
    Filed: January 28, 2003
    Publication date: December 4, 2003
    Inventors: Bruno Grimberg, Yves Ravoire, Jean-Claude Tardivat, Le Tu Anh Vo