Structure Using Multiple Reinforcing Elements Made Of Differing Materials Patents (Class 152/536)
  • Patent number: 10208410
    Abstract: A protective textile sleeve and method of construction thereof are provided. The sleeve has a tubular wall of braided yarns extending lengthwise along a central longitudinal axis between opposite ends. At least some of the braided yarns including heat-set yarns, and the wall has a plurality of annular first regions forming generally convex ridges and a plurality of annular second regions forming generally concave valleys. The first regions alternate with the second regions along the central longitudinal axis. The first regions include a plurality of twisted yarns forming a plurality of closed loops, wherein at least some of the braided yarns pass through at least some of the closed loops within the first regions to enhance the radial stiffness and resistance of the wall to kinking.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: February 19, 2019
    Assignee: Federal-Mogul Powertrain LLC
    Inventors: Tianqi Gao, Leigh Krauser, Zhong Huai Zhang, Michael Piotrowski
  • Patent number: 9174490
    Abstract: A tire comprising a crown reinforcement formed from at least two working crown layers and from at least one layer of circumferential reinforcing elements positioned radially between two working crown layers, the working crown layers adjacent to the layer of circumferential reinforcing elements being on each side of the equatorial plane and in the axial continuation of the layer of circumferential reinforcing elements coupled over an axial width, in order thereafter to be decoupled. A first additional layer of polymer blend having a width at least equal to the width 1 of the coupling zone and having a maximum thickness of less than two times the thickness of the layer of circumferential reinforcing elements is positioned radially under the working crown layer radially adjacent to and inside the layer of circumferential reinforcing elements and is at least partially radially superposed on the coupling zone of the working crown layers.
    Type: Grant
    Filed: September 1, 2008
    Date of Patent: November 3, 2015
    Assignees: Michelin Recherche et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Philippe Johnson, Alain Domingo
  • Patent number: 9096102
    Abstract: A band 12 of a tire 2 includes a topping rubber, and a cord that is helically wound in a circumferential direction of the tire 2. A carcass 10 includes a first carcass ply 22, and a second carcass ply 24 that is layered over the first carcass ply 22, so as to be located outwardly of the first carcass ply 22 in the radial direction. The first carcass ply 22 is turned up around beads 8. The turnup ends 36 are located inwardly of the second carcass ply 24 in an axial direction. A tip of an apex is located inwardly, in the radial direction, of the end of the tread, and outwardly, in the radial direction, of a position that is distant from the end of the tread in the radially inward direction by one-third of a length of the straight line LH.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 4, 2015
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Toshiyuki Matsunami
  • Publication number: 20150122393
    Abstract: The present invention aims at providing a pneumatic tire for a motorcycle, capable of improving steering stability and wear resistance in a turning situation with maintaining good turning performance achieved by a relatively wide auxiliary belt layer. Specifically, the present invention provides a pneumatic tire for a motorcycle, characterized in that: the auxiliary belt layer is sectioned into a middle area Am overlapping a region where the belt layer is provided and respective side areas As each extending beyond the region where the belt layer is provided; the cords in the middle area Am extend at an inclination angle ?m in the range of 70° to 90° with respect to the tire circumferential direction; and the cords in each side area As extend, in at least a portion of the side area, at an inclination angle ?s different from the inclination angle ?m with respect to the tire circumferential direction.
    Type: Application
    Filed: August 8, 2013
    Publication date: May 7, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yukihiko Kubo
  • Publication number: 20140345774
    Abstract: A tire having a radial carcass reinforcement, composed of at least one layer of metal reinforcing elements, the said tire comprising a crown reinforcement, itself topped radially by a tread, the said tread being joined to two beads via two sidewalls. The metal reinforcing elements of at least one layer of the carcass reinforcement are cords exhibiting, in the “permeability” test, a flow rate of less than 20 cm3/min, at least one layer of the carcass reinforcement is provided, on the surface of at least one calendering layer, with textile threads and the said at least one calendering layer of the said at least one carcass reinforcement layer is an elastomeric mixture based on natural rubber or on synthetic polyisoprene and on a reinforcing filler conferring high cohesion.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 27, 2014
    Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Charlotte Caffeau, Sébastien Noel, Isabelle Riou
  • Patent number: 8584724
    Abstract: A pneumatic tire having a reduced weight and improved durability is provided. In this pneumatic tire, at least one of the carcass ply and belt plies or the belt-reinforcement layer is constituted of reinforcing cords being para-aramid cords, and the para-aramid cords satisfy the relationship represented by the following formulae (I) to (III): E?32.14×T?236??(I) E?150??(II) T?19??(III) (where E represents a modulus of elasticity (cN/dtex) at 25° C. under a load of 49 N, and T represents a tensile strength (cN/dtex)).
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: November 19, 2013
    Assignee: Bridgestone Corporation
    Inventor: Hiroyuki Yokokura
  • Patent number: 8584723
    Abstract: The present invention enhances noise performance and anti-uneven wear performance. A pneumatic tire 1 includes a belt layer 7 including at least one belt ply in which belt cords 15 are arranged at an angle of 10 to 40° with respect to a tire equator C. A tread pattern formed on a surface of the tread portion 2 includes a pitch line 22 in which at least two kinds of pattern-constituting units 21 having different pitches in a circumferential direction of the tire are arranged in the circumferential direction of the tire. The belt cords 15 are arranged relatively densely on an inner side of the pattern-constituting unit 21 having a small pitch, and relatively thinly on an inner side of the pattern-constituting unit 21 having a large pitch.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: November 19, 2013
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Masayuki Sakamoto
  • Patent number: 8517072
    Abstract: A tire having a circumferential tread, at least one belt, an inner liner, a pair of sidewalls, at least one carcass ply, and a pair of bead portions. The pair of bead portions each further includes a bead core, a bead filler having an upper end, a chaffer, and a gum strip. The chaffer extends axially outward from the inner liner towards the sidewall and curves radially upward along an axially outer portion of the bead core. The sidewall gum strip extends radially upward from a curved portion of the chaffer, wherein the sidewall gumstrip is located axially between the at least one carcass ply turn-up end and a sidewall.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: August 27, 2013
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Bradley J Harris, Chris A Swartzwelder
  • Patent number: 8499808
    Abstract: A tire comprising a carcass-type reinforcement structure formed from reinforcing elements anchored on each side of the tire to a bead, the base of which is intended to be mounted on a rim seat, each bead being extended radially outwards by a sidewall, the sidewalls joining, radially outwards, a tread and having, beneath the tread, a crown reinforcement structure consisting of at least two layers of reinforcing elements called working layers, said reinforcing elements of the working layers being of identical nature. In a given circumferential plane, the extensional stiffness per unit width of a first working layer measured along the principal direction of the reinforcing elements of said first layer is strictly higher than the extensional stiffness per unit width of a second working layer measured along the principal direction of the reinforcing elements of said second working layer, the second working layer being radially further away from the carcass structure than said first working layer.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: August 6, 2013
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Francis Bordoz, Yannick Gerbal
  • Patent number: 8479793
    Abstract: The present invention provides a tire with a belt having relatively high durability by improving fatigue resistance of cords at end portions of a circumferential belt layer, in particular, and especially proposes a radial tire for heavy load, having a relatively small aspect ratio.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: July 9, 2013
    Assignee: Bridgestone Corporation
    Inventors: Yusuke Yoshikawa, Makoto Tsuruta
  • Patent number: 8464769
    Abstract: A proper balance between ride comfort, steering stability, and road noise is achieved. A pneumatic tire (1) has a band layer (9) comprising a band ply (9A) where band cords are arranged at an angle of not more than 5 deg. with respect to the circumferential direction of the tire on the radially outer side of a belt layer (7). The band ply (9A) comprises a first ply piece (9a) covering only one side of end portions of the belt layer (7) and a second ply piece (9b) disposed adjacently to the first ply piece (9a), covering continuously the central portion of the belt layer (7) and another side of the end portions, and having a width larger than that of the above-mentioned first ply piece (9a). And, the band cords of said first ply piece (9a) and band cords of said second ply piece (9b) are different in modulus.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: June 18, 2013
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Nobuyoshi Yoshinaka, Masahiro Hanya
  • Patent number: 8413699
    Abstract: This invention provides a radial tire for aircraft comprising a belt composed of a plurality of belt layers, wherein a total strength of the belt Tbelt [N] in a circumferential direction over its full width satisfies Tbelt/WD?1.5×106 in which D [m] is an outer diameter of the tire and W [m] is a width of the tire, the belt is composed of at least two belt layers each containing organic fiber cords with an elongation in an extension direction under a load of 3.2 cN/dtex of 2.2-9.3%, a protection belt layer having a circumferential stiffness lower than that of the belt is disposed at an outside of the belt in a radial direction, a ratio of the circumferential stiffness of the protection belt layer to the circumferential stiffness of the belt is less than 0.5, and the protection belt layer is composed of organic fiber cords having a tensile strength at break of not less than 6.3 cN/dtex and a heat shrinkage factor of 0.5-5.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: April 9, 2013
    Assignee: Bridgestone Corporation
    Inventor: Takeshi Yano
  • Patent number: 8336593
    Abstract: There is provided a pneumatic tire capable of improving high-speed durability and noise characteristics. The pneumatic tire has a belt-reinforcing structure 10 radially outwardly of belt plies 8 and 9, the belt-reinforcing structure 10 having organic fiber cords n spirally wound in the circumferential direction T of the tire. The belt-reinforcing structure 10 has an end reinforcement layer 10B disposed radially outwardly of each end region BE of the belt plies 8 and 9.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: December 25, 2012
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Shinya Harikae
  • Patent number: 8261795
    Abstract: There are provided a pneumatic radial tire of heavy load vehicles, in which durability of a belt is improved. A pneumatic radial tire for heavy load vehicles comprises a pair of bead portions in each of which a bead core is embedded, a radial carcass ply 1 extending from one bead portion to the other bead portion and turned around the bead core from an inner side to an outer side of the bead core in a width direction of the tire and at least six belt layers 2 disposed on an outer side of this radial carcass ply 1 in a radial direction of the tire, wherein the following relations are satisfied: W56>W34>W12, where W12 is a maximum width of first and second belts 2a f the belt layers 2, W34 is a maximum width of third and forth belts 2b of the belt layers 2 and W56 is a maximum width of fifth and sixth belts 2c of the belt layers 2; and 1>D12/D34>0.6, where D12 is a cord diameter of the first and second belts and D34 is a cord diameter of the third and forth belts.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: September 11, 2012
    Assignee: Bridgestone Corporation
    Inventor: Masanori Aoyama
  • Patent number: 8225835
    Abstract: Provided is a pneumatic radial tire: that includes a circumferential-direction reinforcement layer having a width increased with fatigue break of the circumferential-direction reinforcement layer being suppressed at edge portions thereof; and that suppresses separation in each of cross belt layers at edge portions thereof. A pneumatic radial tire according to the present invention is a pneumatic tire including: at least two cross belt layers disposed on an outer circumferential side of a carcass layer in a tread portion; and at least one circumferential-direction reinforcement layer disposed between these cross belt layers, a width of the circumferential-direction reinforcement layer being smaller than that of each cross belt layer.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: July 24, 2012
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Shinya Harikae
  • Patent number: 8210223
    Abstract: A pneumatic tire for use on aircraft has a tread, a crown reinforcement, and a radial carcass reinforcement having at least one axially inner ply of textile cords wound around a pair of bead cores, at least one axially inner ply being wound around the bead core in each bead from inside to the outside forming outside turn-ups and at least one axially outer ply of textile cords extending from bead to bead along the turn-ups of the at least one axially inner ply. The at least one axially inner ply or at least one axially outer ply has merged cords having a percent elongation at break of 12% to less than 20% and a break strength greater than 1050 N with a linear density of greater than 9,000 dtex. Merged cord reinforcement is preferably used in the ply layers or strips of the crown reinforcement as well.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: July 3, 2012
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Walter Kevin Westgate, Yuvaraj Senthil Arumugam, Robert John Gartland
  • Patent number: 8202381
    Abstract: The invention provides a radial tire, in which a single rubber coated cord (C1) is used to form a carcass layer (1) without generating any material jointed portion and which is favorable in weight balance, external appearance, and quality and excellent in productivity, the carcass layer (1) is formed from at least one cord row layer (11A) formed by cutting a rubber coated cord (C1), which is formed to make an external shape of a cross section elliptical, one by one, to align and bond the same in a tire circumference direction, and the cord row layer is jointed only in a single location on a tire circumference to generate little overlap.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: June 19, 2012
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventors: Shigeo Kudo, Tetsuo Tatara, Osamu Fujiki
  • Patent number: 8151841
    Abstract: A pneumatic tire includes a tread portion on each side of the equatorial plane. At least two circumferential main grooves and three land portions are formed in the tread portion. In a cross section in a meridian direction of the pneumatic tire, profile lines of the land portions form arcs, and an intersection of extension lines of profile lines of adjacent land portions forms an inflection point in a circumferential main groove. Tensile strength of a reinforcing layer in the land portions is larger than that in the circumferential main groove having the inflection points.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: April 10, 2012
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Masahiro Ebiko
  • Patent number: 8137495
    Abstract: A method of producing a pneumatic tire in which, a cord material of a secondary belt layer has a larger thermal shrinkage rate than that of the primary belt layer to effectively suppress the radial expansion of a tire and advantageously improve cutting-resistance of a tread as in the conventional tire. In the method, a ribbon-shaped strip 22 is folded in a region R, in a developed plan view of a material 21 forming the secondary belt layer, between a side end e of the forming material 21 and a position distanced from the side end toward the tire equatorial side by ¼ of the overall width of the forming material, such that the thus bent ribbon-shaped strip 22 extends in a curved manner to build a green tire.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: March 20, 2012
    Assignee: Bridgestone Corporation
    Inventor: Hiroyuki Togou
  • Patent number: 8096335
    Abstract: A heavy vehicle tire comprising at least four working plies formed of reinforcing elements which, from one ply to the next, cross one another, and comprising at least one protective ply. The tire is supplemented on each side of the circumferential mid-plane by a single working half-ply the reinforcing elements of which make an angle greater than 30° with the circumferential direction, the half-ply being radially on the inside of and adjacent to the radially outermost continuous working ply, its axially outer end being axially on the outside of the ends of the continuous working plies, and the reinforcing elements of the half-ply, the reinforcing elements of the radially outermost continuous working ply and the reinforcing elements of the protective ply the end of which is axially on the outside of the ends of the working plies being oriented in the same direction.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 17, 2012
    Assignee: Michelin Recherche et Technique S.A.
    Inventor: Lucien Bondu
  • Publication number: 20110303337
    Abstract: This invention relates to tacky finishes and to the textile materials and articles treated with the tacky finishes. The tacky finishes provide improved processing features for end-use articles that contain such finishes. The tacky finish may be combined with other adhesion promotion finishes in the treatment of textile materials. The textile materials and articles may be used as rubber reinforcing materials, such as automotive tire cap ply, single end tire cord, carcass reinforcement and side wall reinforcement. End-use articles that contain the treated textile materials include rubber-containing materials such as automobile tires, belts, and hoses. This invention also relates to the methods for manufacturing the treated textile materials and articles.
    Type: Application
    Filed: May 13, 2011
    Publication date: December 15, 2011
    Inventors: Dany Michiels, Shulong Li, Sofie A. Christiaens
  • Patent number: 7905265
    Abstract: An aircraft tire inflated to high pressure and including a tread and a crown reinforcement in the form of composite textile cables which form at least one twin ply of two layers of crossed elements obtained by winding, in a zigzag around a cylindrical support and from one edge of the crown reinforcement to the other, a strip of at least one reinforcement until the two layers of crossed elements form angles of opposing directions of between 8° and 30° with the circumferential direction.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 15, 2011
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Cyrille Roget, Lilian Vialatte
  • Publication number: 20110048606
    Abstract: A pneumatic radial tire is provided which can realize superior high-speed durability and low rolling resistance without causing other problems such as increase in the production cost and increase in the tire weight. A pneumatic radial tire 10 comprising: a bead core 1 provided in each of a left-and-right pair of bead portions 11; a carcass ply 2 extending from a crown portion 12 to both bead portions 11 via both side wall portions 13 and anchored to the bead cores 1, the carcass ply 2 comprising a radial cord layer; a belt 3 arranged in the outside of the crown portion in the radial direction; a belt reinforcing layer 4 arranged in the outside thereof almost in the equatorial direction of the tire; and a tread 5 arranged in the outside thereof. The fiber cords forming the belt reinforcing layer 4 are single-twist cords comprising a combination of different types of fibers.
    Type: Application
    Filed: January 19, 2009
    Publication date: March 3, 2011
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yugo Zuigyo
  • Patent number: 7851015
    Abstract: An apparatus and process are used to make a ready-to-apply tape from greige fabric. This tape can be used as cap plies, breakers and reinforcement in the carcass of tires. The tape is made by dipping a greige mini-fabric which comprises a plurality of single end cords in a solvent-based cement. The cement, which comprises solvent and an elastomeric composition, is dried so that the majority of the solvent evaporates. The elastomeric composition remains, encapsulating the fabric, thereby forming the tape.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: December 14, 2010
    Inventor: Walter Terschueren
  • Patent number: 7712499
    Abstract: In the pneumatic radial tire of the present invention, a total strength K0 of a belt layer 20 in a circumferential direction of the tire per unit of width at a tire equator surface position P0 is set greater than a total strength of the belt layer 20 in the circumferential direction of the tire per unit of width at a width position P2 corresponding to ? of a maximum width of the belt layer having the tire equator surface CL as a center.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: May 11, 2010
    Assignee: Bridgestone Corporation
    Inventors: Takeshi Yano, Hiroyuki Mori, Masaaki Nakamura, Seiji Itai
  • Patent number: 7712498
    Abstract: A flat tire (2) according to the present invention includes a load support layer (12) positioned on an inside in an axial direction of a sidewall (6). The tire (2) further includes a belt (14) constituted by an inner belt ply (40) and an outer belt ply (42), and a full band (16) substantially covering a whole surface on an outside in a radial direction of the belt (14). The full band (16) is formed by a cord and a topping rubber. When a tensile load of 50N is applied, the cord has an elongation of 3.0% or less. The tire (2) may include a center band which has a smaller width in the axial direction than the width of the full band (16) and is laminated on the full band (16) in the vicinity of an equator (CL).
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: May 11, 2010
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Tetsuya Sakaguchi, Yasuo Wada
  • Patent number: 7438104
    Abstract: A rubber-covered belt ply forms a belt layer. At least a majority of metal wires in the ply exist as metal wire bundles in which a plurality of metal wires of circular cross-sections and substantially equal wire diameters are aligned in parallel without being twisted together, the metal wire bundles being aligned planarly and in parallel with intervals between the metal wire bundles in a transverse direction. At least one layer, which is a cap layer in which organic fibers are covered with rubber and/or a reinforcing layer which is formed of rubber or whose main component is rubber, is disposed between the belt layer and a tread.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: October 21, 2008
    Assignee: Bridgestone Corporation
    Inventors: Takao Morii, Sumito Nakagawa, Naohiko Obana
  • Patent number: 7438961
    Abstract: A plies sleeve for use in forming a core of plies and beads on a core build mandrel where the plies sleeve is woven as a tubular sleeve having a uniform circumference that will stretch laterally, increasing the sleeve circumference to fit over a top surface or crown of the core build mandrel and is of a length to where each sleeve side will fold down an opposite core build mandrel side, passing around a tire bead, back up the cored build mandrel side and over the top surface or crown edge. Which outward sleeve stretching is provided by a select weave where Rayon cords are spiral wound as vertical components of approximately seven point (7.5) pics per inch, and elastic cords are included as horizontal components of approximately eight (8) pics per inch that are formed as pre-cure elastic cords from a urethane material and are cotton wound, to allow for sleeve stretching and provide for a return of the plies sleeve to its un-stretched state.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: October 21, 2008
    Assignee: Amerityre
    Inventors: Richard A. Steinke, Theodore M. Love
  • Patent number: 7404426
    Abstract: A hybrid cord 1 for rubber reinforcement comprises a strand 2 having higher elastic modulus, made of PBO fiber or the like, which is disposed at the center of the cord, and strands 3 having lower elastic modulus, made of glass fiber or the like, which are disposed therearound. The hybrid cord has enough strength and is excellent in flexural fatigue resistance, adhesion property relative to rubber, and dimensional stability. A rubber product employs this hybrid cord 1 for rubber reinforcement.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: July 29, 2008
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Mitsuharu Akiyama, Takeshi Maeda, Yukinari Okuyama
  • Patent number: 7329459
    Abstract: The subject matter herein is directed to a polymer-based cap ply reinforcement material that has a shrinkage component, wherein the reinforcement material is treated such that the shrinkage component increases at least about 10% over a reference shrinkage component of a reference polymer-based reinforcement material. The subject matter herein is further directed to a method of producing a product comprising a polymer-based cap ply reinforcement material, wherein the method includes: a) providing a reference polymer-based cap ply reinforcement material having a reference shrinkage component; b) providing a polymer-based cap ply reinforcement material having a shrinkage component; c) treating the polymer-based cap ply reinforcement material such that the shrinkage component increases at least about 10% over the reference shrinkage component of the reference polymer-based cap ply reinforcement material.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: February 12, 2008
    Assignee: Performance Fibers, Inc.
    Inventor: Peter Bryan Rim
  • Patent number: 7165589
    Abstract: A pneumatic tire comprises a spiral belt formed by spirally winding a cord(s) along a circumferential direction of a torus tread, wherein the spiral belt is comprised of at least one layer constructed with a combination of two different cords each having an initial tension of not less than 50 cN/cord.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: January 23, 2007
    Assignee: Bridgestone Corporation
    Inventor: Tsutomu Nakamura
  • Patent number: 6976518
    Abstract: In a pneumatic radial tire comprising a belt of at least two belt layers, in which the belt comprises a maximum-width belt layer containing many cords slantly arranged with respect to an equatorial plane of the tire and a narrow-width belt layer arranged at the outside of the maximum-width belt layer in the radial direction and containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer, the belt end separation is controlled by arranging a reinforcing layer containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer so as to overlap with an outer end portion of the maximum-width belt layer located outward from an outer end. of the narrow-width belt layer in the widthwise direction thereof.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: December 20, 2005
    Assignee: Bridgestone Corporation
    Inventor: Kuninobu Kadota
  • Patent number: 6843295
    Abstract: A radial medium truck (RMT) tire has belt or breaker plies which are reinforced by organic reinforcement cords or filaments. In one embodiment, organic monofilaments are used in the belt or breaker plies which have the following characteristics: at least 2,000 denier (2,200 dTex), a tenacity of at least 3.5 g/denier (31 cN/Tex), an initial modulus of at least 30 g/denier (265 cN/Tex) and a shrinkage of at most 6%.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: January 18, 2005
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Italo M Sinopoli, John Gomer Morgan, Anthony Hardy, Murat Yasar Susutoglu
  • Publication number: 20040123930
    Abstract: A pneumatic tire comprises a spiral belt formed by spirally winding a cord(s) along a circumferential direction of a torus tread, wherein the spiral belt is comprised of at least one layer constructed with a combination of two different cords each having an initial tension of not less than 50 cN/cord.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 1, 2004
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Tsutomu Nakamura
  • Publication number: 20040089391
    Abstract: Tire for heavy off-the-road vehicles comprising a radial carcass reinforcement (1) anchored in each bead to an annular bead reinforcement element (2), and radially above it a crown reinforcement (3) consisting of at least two working crown plies (320, 321) of inextensible metallic cables crossed from one ply (320) to the next (321), the said plies having widths at least equal to 50% of the width L of the tread (4) and, radially above these, two protection crown plies (330, 331) of so-termed elastic metallic cables crossed from one ply (330) to the next (331), the tread (4) comprising in its ungrooved portion of thickness D at least one armature (34) of reinforcement elements, wherein the said armature (34) is composed of at least two layers (340, 341) of textile monofilaments parallel to one another in each layer, the axial widths of the said two layers (340, 341) being at least equal to the width of the narrower working ply (321).
    Type: Application
    Filed: October 24, 2003
    Publication date: May 13, 2004
    Applicant: Michelin Recherche Et Technique S.A.
    Inventors: Pierre Jallais, Jean-Marc Ruffenach
  • Publication number: 20040089390
    Abstract: Reinforcement ply N for a tire, formed of reinforcement elements embedded in coating products, characterized in that it comprises a first C1 and a second C2 layer of metallic elements E1, E2 parallel to one another, embedded in a coating product or coating products M1, M2 and, between the said two layers C1 and C2, a third layer C3 of elements E3 made from a textile material and embedded in a coating product M3, the said textile elements E3 being orientated relative to the elements E1 and E2 at an angle between 70° and 110°.
    Type: Application
    Filed: October 24, 2003
    Publication date: May 13, 2004
    Applicant: Michelin Recherche Et Technique S.A.
    Inventors: Pierre Jallais, Jean-Marc Ruffenach
  • Publication number: 20040079463
    Abstract: In a pneumatic radial tire comprising a belt of at least two belt layers, in which the belt comprises a maximum-width belt layer containing many cords slantly arranged with respect to an equatorial plane of the tire and a narrow-width belt layer arranged at the outside of the maximum-width belt layer in the radial direction and containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer, the belt end separation is controlled by arranging a reinforcing layer containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer so as to overlap with an outer end portion of the maximum-width belt layer located outward from an outer end. of the narrow-width belt layer in the widthwise direction thereof.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 29, 2004
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Kuninobu Kadota
  • Publication number: 20030201046
    Abstract: A two-piece tire assembly has a removable tread belt 12 for installing about the circumference of a tire carcass 14. The tread belt has at least a pair of belt layers, and one layer comprising inextensible reinforcing cables inclined at substantially zero degrees relative to the circumferential direction of the tire assembly. The cables in zero degree ply have a tensile strength of at least 27,500 N.
    Type: Application
    Filed: May 23, 2003
    Publication date: October 30, 2003
    Inventors: William Earl Rayman, Barry Allen Matrana, Thomas Roy Fuhrig, Gregory Scott Hanna
  • Patent number: 6634398
    Abstract: A chip resistant pneumatic tire (10) is provided. The tire has an original reinforced rubber sheet (22, 22b) embedded in or under its tread (18) and/or sidewall (20 ), and is used in off the road applications such as mining. Low sulfur rubber (17) is used to coat the organic reinforcement (11), and its shown that such rubber (17) is more compatible with rubber used to form the tread (18) or sidewall (20), which together with the organic reinforcement (11), helps prevent chipping and chunking in the tread (18) and sidewall (20). The illustrated organic filaments of cords (11) have a round cross section and are at least 2000 denier (2200 dTex) and have a tenacity of at least 3.5 g/denier (31 cN/Tex), an initial modulus of at least 20 g/denier (177 cN/Tex), an elongation at break of at least 10%, and a shrinkage of at most 10%.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: October 21, 2003
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Jerry Malin, Subhash Chander Agarwal, Michael John Roon, Dale Eugene Wells
  • Patent number: 6612353
    Abstract: A tire having a crown reinforcement formed of at least two working crown plies (32, 34) having axial widths L32, L34 greater than the width L33 of an additional reinforcement (33) of inextensible, substantially radial reinforcement elements, which reinforcement is arranged radially between said plies (32, 34) and is axially composed of three parts, a central part (33′) in the form of a ply formed of inextensible, substantially radial reinforcement elements and two lateral parts in the form of strips (33″), each formed of circumferential reinforcement elements, the modulus of elasticity upon traction per unit of width of a lateral strip being at most equal to the modulus of elasticity upon traction, measured under the same conditions, of the most extensible working ply.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: September 2, 2003
    Assignee: Michelin Recherche et Technique, S.A.
    Inventor: Guy Cluzel
  • Publication number: 20030155059
    Abstract: A radial medium radial truck (RMT) tire has belt or breaker plies which are reinforced by organic reinforcement cords or filaments. In the preferred embodiment, organic multifilaments are used in the top belt or breaker plies which have the following characteristics: at least a gauge of 420×2 dTex to about 3300×3 dTex, a tenacity of about 35 cN/Tex to about 200 cN/Tex, an initial modulus of at least 30 g/denier (250 cN/Tex) and a shrinkage of about 0.1-10 %. When an organic polymer reinforcement is used in the top belt or breaker in the belt package of a tire, scrapping of tires during a retreading operation because of corrosion is greatly reduced. In addition, acceptance for retreadability is increased because of reduced top belt or breaker damage, allowing for easier preparation for the retreading. Moreover, the invention relates to an improved construction to reduce defects known as blows.
    Type: Application
    Filed: May 1, 2000
    Publication date: August 21, 2003
    Inventors: DANIEL ROGER FERNAND NOEL, MURAT YASAR AHMET SUSUTOGLU, MICHELE MARIE JOSEPH EMILE SPRIET, MUSTAFA GOKSOY, FERNAND ANTOINE JOSEPH FOURGON
  • Publication number: 20030116247
    Abstract: In a high-transverse-curvature tire (1), in particular to be mounted on the front wheel of a motor-vehicle, comprising a belt structure (6) including, in a radially external layer (9a), a plurality of circumferential coils (7a), axially arranged side by side, of a cord (7) wound at a substantially zero angle with respect to the equatorial plane (X-X) of the tire, the area occupied by rubber blocks (10) formed in a portion of the tread band (8) having a length equal to the pitch (p) of the tread pattern and a width equal to the axial development of the tread band (8), is between 70% and 90% of the total area of said portion. Such a tire (1) advantageously couples a substantial reduction in the shimmy effect with a good wet grip and a reduction in both the braking distance and aquaplaning phenomena on wet road.
    Type: Application
    Filed: March 30, 2000
    Publication date: June 26, 2003
    Inventors: Giancarlo Armellin, Peter Kronthaler
  • Patent number: 6568445
    Abstract: A pneumatic tire comprises a carcass comprised of one or more carcass plies and a belt disposed on an outer periphery side of a crown portion of the carcass and comprised of one or more belt layers, wherein each of at least one carcass ply and at least one belt layer is constituted with organic fiber cords having a modulus of elasticity within a specified range.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: May 27, 2003
    Assignee: Bridgestone Corporation
    Inventor: Teruhiko Kojima
  • Patent number: 6561245
    Abstract: A pneumatic radial ply tire (50) having a tread (52), a carcass (60) with two sidewalls (77, 78), two or more radial plies (70, 72), two annular beads (36a′, 36b′), a belt structure (56) located radially between the tread and the radial ply structure (58), one or more circumferentially deployed high-modulus incompressible belt reinforcements (66) and/or two or more circumferentially deployed high-modulus tensile-stress-bearing fabric reinforcements (59). Belt reinforcement(s) (66) and/or fabric reinforcement(s) (59) work to increase the lateral and circumferential rigidity of the tread (52) and underlying structures of the carcass (60). The lateral and circumferential stiffening of the tread (52) enhances high-speed runflat handling and contributes to improved runflat operational life.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: May 13, 2003
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Roland Close, Agnes Nathalie Iwana Verbeke-Ensch, Gia Van Nguyen
  • Patent number: 6546983
    Abstract: A pneumatic tire with a folded belt structure comprises a cut belt and an overlay encompassed by folded over edges of the folded belt. Low aspect ratio tires for high performance automobiles having this structure can be made using a variety of materials.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 15, 2003
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Dale Kenneth Dyer
  • Publication number: 20020195185
    Abstract: Disclosed is a radial tire for an automobile, in which lyocell having a dry/wet tenacity ratio S1/S2 of 1.2 to 1.6, a tensile strength at high temperature/a tensile strength at room temperature ratio S3/S4 of more than 0.8, and a shrinkage E of less than 0.01 is applied to a carcass part, thereby a resistance to fatigue and dimensional stability in running of a tire are improved.
    Type: Application
    Filed: April 5, 2002
    Publication date: December 26, 2002
    Inventors: Soo-myung Choi, Cheol Kim
  • Patent number: 6478063
    Abstract: A radial medium truck (RMT) tire has belt or breaker plies which are reinforced by organic reinforcement cords or filaments. In one embodiment, organic monofilaments are used in the belt or breaker plies which have the following characteristics: at least 2,000 denier (2,200 dTex), a tenacity of at least 3.5 g/denier (31 cN/Tex), an initial modulus of at least 30 g/denier (265 cN/Tex) and a shrinkage of at most 6%.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: November 12, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Italo M. Sinopoli, John Gomer Morgan, Anthony Hardy, Murat Yasar Susutoguu
  • Patent number: 6460586
    Abstract: A run flat pneumatic tire includes a thin annular band embedded in the crown portion of the tire wherein the band is formed with three distinct regions. Radially spaced inner and outer regions are formed of high modulus materials and a central region is formed of a material more elastic than the other two regions providing a band having high interlaminar shear strength. Reinforcing fibers are placed in various orientations in certain of the regions to enable various materials to achieve the required band stiffness for load carrying capability and the interlaminar shear strength at the central axis of the band.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: October 8, 2002
    Assignee: Bridgestone/Firestone North American Tire, LLC
    Inventors: Charles D. Spragg, James M. Kirby, Edward G. Markow
  • Patent number: 6401779
    Abstract: A tire includes a carcass; a tread band on the carcass; a belt, positioned between the tread band and the carcass, including at least one layer of rubberized fabric; and at least one reinforcing metal strap in the at least one layer of rubberized fabric. The at least one reinforcing metal strap is made of a shape-memory material oriented at about 0° to an equatorial plane of the tire. The at least one reinforcing metal strap has a width of no less than about 1 mm. And the at least one reinforcing metal strap has coils disposed side-by-side in a direction substantially perpendicular to a radius of the tire.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: June 11, 2002
    Assignee: Pirelli Pneumatici S.p.A.
    Inventors: Guido Riva, Gurdev Orjela, Maurizio Boiocchi
  • Patent number: 6394160
    Abstract: The present invention is directed towards a pneumatic radial tire. The tire is comprised of a reinforcing belt structure wherein the belt plies are divided into at least three segments. The reinforcing cords in each segment of a ply are oriented in the same inclination direction. By maintaining the same cord inclination in the segments, dividing the belt ply into segments creates hinge points for the belt ply, reducing the stiffness of the ply across the width of the tread from the centerline of the tire to the tread edges. If the belt structure has more than one reinforcing ply, the segments of the adjacent plies are staggered by a distance at greater than the radial height between the radially inner side of the adjacent belt plies.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: May 28, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Mahmoud Cherif Assaad, Michael Gregory Zelin