On Inner Surface Of Tubeless Tire Patents (Class 152/504)
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Patent number: 11400765Abstract: Provided is a tire with improved rim fitability that increases contact pressure of a heel by discharging air caught in a rim seat, makes rim fitability uniform by reducing a pressure difference, and increases a barcode recognition rate. The tire with improve rim fitability includes a rim seat having a rim check line, and a plurality of protrusions spaced apart from each other along a circumference of the rim seat and each including an upper protrusion unit and a lower protrusion unit, in which the upper protrusion unit and the lower protrusion unit are spaced apart from each other along the circumferential direction of the rim seat.Type: GrantFiled: October 30, 2019Date of Patent: August 2, 2022Assignee: HANKOOK TIRE & TECHNOLOGY CO., LTDInventors: Young Do Lee, Kwang Tae Kim, In Jeong Park, Woo Haeng Heo, Si Wan Kim
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Patent number: 11312094Abstract: An assembly of a pneumatic tire and of a wheel, the pneumatic tire (10) being fitted to the wheel. The assembly comprises first and second self-sealing products housed in the internal volume (V) of the pneumatic tire (10). The first self-sealing product, referred to as solid self-sealing product (OS), covers a predetermined part of the internal surface of the pneumatic tire (10). The relative position of this predetermined part in the pneumatic tire (10) does not substantially vary under the effect of gravity. The second self-sealing product, referred to as liquid self-sealing product (OL), is in the liquid form.Type: GrantFiled: December 1, 2017Date of Patent: April 26, 2022Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Remi Bruant, Christopher Careme, Simona Ceccia, Jose Merino Lopez
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Patent number: 11207919Abstract: Methods for treating the surface of a cured inner liner are disclosed. By use of these methods a treated, cured inner liner is produced which has a lower surface with increased adherability to other materials (e.g., adhesives). Treated, cured inner liners resulting from such methods as well as tires containing the treated inner liners.Type: GrantFiled: June 21, 2017Date of Patent: December 28, 2021Assignee: Bridgestone Americas Tire Operations, LLCInventors: Kung-Ching Liao, Joshua P. Abell, Jenny L. Sheaffer
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Patent number: 11155700Abstract: The object of the present invention is to provide a tire puncture sealant having excellent sealing property, storage property, and injection property. The tire puncture sealant of the present invention contains a rubber latex and/or a resin emulsion and a cellulose fiber having a maximum fiber diameter of less than 1,000 nm, the cellulose fiber containing cellulose that optionally has a functional group.Type: GrantFiled: April 18, 2018Date of Patent: October 26, 2021Assignee: The Yokohama Rubber Co., Ltd.Inventor: Kiyohito Takahashi
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Patent number: 11130300Abstract: A pneumatic tire and a method for producing the pneumatic tire, wherein the pneumatic tire includes a generally string-shaped adhesive sealant, the sealant is continuously and spirally attached at least to the inner periphery of the tire that corresponds to a tread portion, the sealant has a wider portion on at least one of the longitudinal ends thereof, and the wider portion has a width larger than that of the longitudinally adjoining portion.Type: GrantFiled: October 16, 2015Date of Patent: September 28, 2021Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Naoki Yukawa, Satoshi Yamada, Mutsuki Sugimoto
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Patent number: 11077725Abstract: Provided is a pneumatic tire having sufficient sealing performance. The present invention relates to a pneumatic tire including a sealant layer located radially inside an innerliner, the sealant layer being formed by applying a sealant to the inner periphery of a tire from which mold release agents have been removed.Type: GrantFiled: October 16, 2015Date of Patent: August 3, 2021Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Naoki Yukawa, Mutsuki Sugimoto, Satoshi Yamada
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Patent number: 11034188Abstract: A method of preparing a tire including the steps of: providing a cured tire, the tire including a first bead, a second bead, a carcass layer extending from the first bead to the second bead, and an optional innerliner layer disposed interior to the carcass layer; applying a pair of reinforcing members to the carcass layer or to the optional innerliner layer, if present; and applying an air barrier composition to the pair of reinforcing members, and to a portion of the carcass layer or to a portion of the optional innerliner layer to thereby form an air barrier layer.Type: GrantFiled: November 16, 2017Date of Patent: June 15, 2021Assignee: Bridgestone Americas Tire Operations, LLCInventors: Amy M. Randall, Craig R. Balnis, David J. Zemla
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Patent number: 10850575Abstract: Provided is a pneumatic tire in which a sealant layer entirely exhibits sufficient sealing performance. The present invention relates to a pneumatic tire including a sealant layer located radially inside an innerliner, the sealant layer being formed by continuously and spirally applying a generally string-shaped sealant to the inner periphery of a tire in the tire width direction from one side to the other, the attachment start portion of the sealant being located tire-widthwise inward from the tire-widthwise end of the sealant layer.Type: GrantFiled: October 16, 2015Date of Patent: December 1, 2020Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Naoki Yukawa, Yogun Kida, Mutsuki Sugimoto, Satoshi Yamada
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Patent number: 10844177Abstract: The present disclosure relates to self-sealing silicone sealant and/or gel compositions cured via a condensation cure chemistry and to their use subsequent to cure as puncture-resistant layers in any type of “inflatable” article, i.e. articles which take their functional shape after inflation with a suitable gas such as air. The present disclosure also relates to silicone materials, e.g. elastomers and/or gels obtained subsequent to curing said compositions designed to function as self-sealing tire puncture material, i.e. to seal puncture holes in the tread region of tires if/when punctured by a foreign body.Type: GrantFiled: August 3, 2017Date of Patent: November 24, 2020Assignee: Dow Silicones CorporationInventors: Victor Baily, Gregory Chambard, Frederic Gubbels
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Patent number: 10730255Abstract: The process includes a non-crosslinked self-sealing composition which is introduced into an extrusion means, the geometric and thermodynamic characteristics of which have been specially adapted. The speed and temperature conditions of the extrusion means are adjusted so that, at an application nozzle forming the outlet die of the extrusion means, the self-sealing composition is crosslinked. The application nozzle is brought close to the internal surface of the casing previously set in relative motion with respect to the application nozzle, and an extruded and crosslinked bead that has a given width and profile is deposited directly on the internal surface of the casing.Type: GrantFiled: May 7, 2015Date of Patent: August 4, 2020Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Stephane Barjon, Christian Beldent, Bruno Dussardier, Sarah Joandel
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Patent number: 10682891Abstract: Tire with sidewalls (6) having, on their outer surfaces, a set of protuberances (8) that alternate with voids (9). The tread (4) comprises a circumferential groove (10) at at least one axially outermost end (4a). Each protuberance (8) is disposed at the surface of a sidewall, the different protuberances being disposed regularly or irregularly and continuously or discontinuously between a point A and a point E. The inner wall (2a) of the carcass ply (2) of the tire is partially or entirely covered with at least one layer of a self-sealing composition (2b).Type: GrantFiled: December 1, 2015Date of Patent: June 16, 2020Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.Inventors: Jacky Pineau, Hervé Ferigo, José Merino Lopez
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Patent number: 10632790Abstract: A pneumatic tire is configured by a resin tire frame member. An inner face of the tire frame member is provided with an attachment section. The attachment section is configured so as to attach a sound-absorbing material inside the tire frame member. The sound-absorbing material employs, for example, a spongey material, and the sound-absorbing material is capable of absorbing sound.Type: GrantFiled: August 21, 2015Date of Patent: April 28, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Seiji Kon, Yoshihide Kouno
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Patent number: 10494459Abstract: Provided are a rubber composition for pneumatic tires with excellent fluidity and excellent degradation resistance, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for pneumatic tires containing a rubber component including a halogenated butyl rubber, and an organic peroxide.Type: GrantFiled: October 16, 2015Date of Patent: December 3, 2019Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Mutsuki Sugimoto, Naoki Yukawa, Satoshi Yamada
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Patent number: 10471781Abstract: A pneumatic vehicle tire is provided. The tire includes a tread, an inner surface lying opposite the tread, a self-sealing sealant and a sound-absorbing open-cell foam ring arranged inside the pneumatic vehicle tire. The foam ring is adhesively attached to the inner surface and adheres to the self-sealing sealant which is applied before the sound-absorbing open-cell foam ring is attached to the inner surface. The self-sealing sealant has, at least immediately after being applied, a tackiness required for an adhesive attachment of the sound-absorbing open-cell foam ring. A closed-cell material ring is arranged between the sound-absorbing foam ring and the self-sealing sealant to prevent a diffusion of the sealant into the open-cell foam ring. The closed-cell material ring effects an airtight condition.Type: GrantFiled: September 28, 2016Date of Patent: November 12, 2019Assignee: Continental Reifen Deutschland GmbHInventors: Andreas Tyburski, Oliver Schuermann, Michael Schwarz, Joerg Goener, Joe Guardalabene
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Patent number: 10336144Abstract: An inflatable electronics band for use in a tire features an annular, flexible, inflatable, tubular body configured to contact an inner portion of a tire opposite the tread surface, such as an innerliner. The inflatable electronics band further features an inflation valve, disposed on the tubular body. The tubular body is configured to inflate to a pressure at least 10% greater than the recommended tire inflation pressure.Type: GrantFiled: November 13, 2015Date of Patent: July 2, 2019Assignee: Bridgestone Americas Tire Operations, LLCInventors: Terence E. Wei, Paul B. Wilson
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Patent number: 10300747Abstract: A self-sealing tire for vehicle wheels includes: a carcass structure, a tread band applied in a radially external position to the carcass structure at least in a crown area of the tire, a liner applied in a radially inner position to the carcass structure, and a layer of sealing material applied in a radially inner position to the carcass structure and which extends axially at least in all the crown area of the tire in which the sealing material includes a partially chemically crosslinked composition including an unsaturated styrene thermoplastic elastomer.Type: GrantFiled: December 21, 2012Date of Patent: May 28, 2019Assignee: PIRELLI TYRE S.P.A.Inventors: Luca Giannini, Cristiano Puppi, Marco Nahmias Nanni, Michela Caprio
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Patent number: 10259270Abstract: A method of selectively controlling the self-sealing ability of a tyre obtained by application of a sealing assembly on a drum and subsequent formation thereon of a precursor of a green tyre inclusive of liner and carcass, followed by shaping, curing and molding. The sealing assembly includes: a self-supporting thermoplastic film of polyamide or polyester and a layer of sealing material possessing viscoelasticity and stickiness features, which is associated with and supported by the self-supporting thermoplastic film. The sealing assembly is easily puncturable by a sharp-pointed element while it maintains such a deformability and stickiness that it helps in the transfer of the sealing material during ejection of the sharp-pointed element and limits the transferred material amount to such an extent that holes bigger than a predetermined value are not sealed.Type: GrantFiled: August 12, 2015Date of Patent: April 16, 2019Assignee: PIRELLI TYRE S.P.AInventors: Francesco D'Oria, Gianni Mancini, Cristiano Puppi, Enrico Sabbatani, Giovanni Simonato
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Patent number: 10093784Abstract: A method is provided for decomposition of a polymeric article, wherein the polymeric article contains a polymer and one or more energy modulation agents, by applying an applied energy to the polymeric article, wherein the one or more energy modulation agents convert the applied energy into an emitted energy sufficient to cause bond destruction within the polymer.Type: GrantFiled: May 9, 2017Date of Patent: October 9, 2018Assignee: IMMUNOLIGHT, LLC.Inventors: Zakaryae Fathi, John Pacanovsky, Frederic A. Bourke, Jr.
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Patent number: 10086577Abstract: The present invention is directed to a method of making a self-sealing pneumatic tire, the tire having a tread width and a radially innermost surface having a residue deposited thereon, comprising the steps of: activating a laser to generate laser radiation; directing a pulse of laser radiation to impinge on an area of the innermost surface, the pulse of radiation having a pulse width and a fluence sufficient to remove at least part of the residue in the area to form a cleaned area; repeating the step of directing the pulse of radiation sequentially over the innermost surface to form a sequence of cleaned areas, the sequence of cleaned areas defining a stripe, the stripe following a continuous nonlinear path extending at least one circumference about the inner surface, the stripe having a stripe width W2; applying a bead of sealant in a continuous bead path extending at least one circumference about the inner surface, the bead of sealant at least partially overlaying the stripe.Type: GrantFiled: December 1, 2015Date of Patent: October 2, 2018Assignee: The Goodyear Tire & Rubber CompanyInventors: Thomas Benedikt Helfen, Jean-Claude Patrice Philippe Griffoin
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Patent number: 10035383Abstract: The present invention is directed to a pneumatic tire comprising a radially outer circumferential rubber tread disposed on a supporting carcass, an inner liner rubber layer radially inwardly disposed on the supporting carcass, and a sealant layer adhered to and disposed inwardly of the rubber inner liner layer as a radially inner surface of the tire, wherein the sealant layer comprises 100 parts by weight of elastomer comprising 5 to 10 parts by weight, per 100 parts by weight of elastomer (phr) of butyl rubber, 10 to 25 phr of bromobutyl rubber, and 65 to 85 phr of polybutene: and from 0.05 to 2 phr of a polymeric amine.Type: GrantFiled: August 13, 2015Date of Patent: July 31, 2018Assignee: The Goodyear Tire & Rubber CompanyInventors: Gabor Kaszas, Gregory Daniel Zartman, Andreas Frantzen
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Patent number: 9908371Abstract: A method of selectively controlling the self-sealing ability of a tire obtained by application of a sealing assembly on a drum and subsequent formation thereon of a precursor of a green tire inclusive of liner and carcass, followed by shaping, curing and molding. The sealing assembly includes: a self-supporting thermoplastic film of polyamide or polyester and a layer of sealing material possessing viscoelasticity and stickiness features, which is associated with and supported by the self-supporting thermoplastic film. The sealing assembly is easily puncturable by a sharp-pointed element while it maintains such a deformability and stickiness that it helps in the transfer of the sealing material during ejection of the sharp-pointed element and limits the transferred material amount to such an extent that holes bigger than a predetermined value are not sealed.Type: GrantFiled: November 18, 2010Date of Patent: March 6, 2018Assignee: PIRELLI TYRE S.P.A.Inventors: Francesco D'Oria, Gianni Mancini, Cristiano Puppi, Enrico Sabbatani, Giovanni Simonato
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Patent number: 9868262Abstract: A process for applying particles to the inner wall of a tire comprising two sidewalls, a crown provided radially externally with a tread, a carcass-type reinforcing structure and at least one crown reinforcement, the inner surface of the sidewalls and of the crown forming an inner wall, at least one portion of said inner wall being covered with at least one layer of self-sealing composition. The particles are applied after the curing of the tire.Type: GrantFiled: September 18, 2013Date of Patent: January 16, 2018Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventor: Jacques Le Doucen
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Patent number: 9809063Abstract: A low compaction cantilevered tire construction is provided which is designed for use at relatively low inflation pressures and which has sidewalls with a relatively uniform bending resistance through the majority of the sidewall. When the tire is placed under high loads at low inflation pressures the sidewall deflects substantially radially and allows the tread portion of the tire to maintain its intended shape thus improving the contact area of the tire and providing a tire having a relatively high contact area and thus relatively low soil compaction for a given loading.Type: GrantFiled: February 4, 2015Date of Patent: November 7, 2017Assignee: Bridgestone Americas Tire Operations, LLCInventors: Jason R. Barr, Samuel O. Givens, Robert W. Asper, Dennis W. Snyder
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Patent number: 9671305Abstract: The invention relates to tire balancing compositions having improved balancing properties comprise a visco-plastic gel and solid bodies having an average smallest dimension in the range of 0.5-5 mm; preferably 1-4 mm, more preferably around 3 mm. When applied in a layer to the inside of a motor vehicle tire, the compositions act by allowing the solid bodies move through the gel and to concentrate in areas to counteract imbalances. The solid bodies preferably have an average ratio ? between their smallest and their largest dimension of ??2, more preferably ??1.5, especially around 1. The visco-plastic gel preferably has a storage modulus (G?) between 1000 Pa and 25000 Pa at 22° C., a loss modulus (G?) smaller than the storage modulus, and a critical yield stress above 3 Pa at 22° C.Type: GrantFiled: April 8, 2010Date of Patent: June 6, 2017Inventor: Alvin Ronlan
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Patent number: 9421723Abstract: Visco-elastic tire balancing compositions comprising 1) 85 to 97% by weight of a glycol ether component comprising one or more ethylene/propylene glycol copolymer ethers of the general formula (I) or the general (II) or mixtures thereof R—O{[CH(CH3)CH2—O—]m[CH2—CH2—O—]n}H (I) R1—(O—{[CH(CH3)CH2—O—]m[CH2—CH2—O—]n}H)2 (II) wherein R is hydrogen or an alkyl group of 2-8 carbon atoms; R1 is an alkylene moiety of 2-8 carbon atoms in which the two substituents are not carried on the same carbon atom; m is the mole percentage of propylene glycol in the ethylene/propylene glycol copolymer moiety or moieties; and n is the mole percentage of ethylene glycol in the ethylene/propylene glycol copolymer moiety or moieties, wherein the ratio n:m is in the range from 35:65 to 80:20; each glycol copolymer compound having a number average molecular weight in the range of 2000-10000; and 2) 3 to 15% by weight of a fumed silica gel former; said balancing compositions being visco-elastic 1500 Pa and 5000 Pa at 22° C.Type: GrantFiled: November 12, 2009Date of Patent: August 23, 2016Inventor: Alvin Ronlan
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Patent number: 9193124Abstract: Provided is a method of manufacturing a pneumatic tire, in which the uniformity of a tire can be improved. The method of manufacturing a pneumatic tire of the present invention is a method in which a green tire is deformed by a building drum in a tire building process. The building drum used for this process is expandable and contractable in the tire radial directions. In the method, a non-adhesive sheet is disposed on the innermost surface of the green tire. The non-adhesive sheet has a coefficient of friction of 0 to 0.2 on the building drum. Then, the green tire is built in a state where the non-adhesive sheet is attached thereto.Type: GrantFiled: September 13, 2005Date of Patent: November 24, 2015Assignee: THE YOKOHAMA RUBBER CO., LTD.Inventor: Yoshiaki Hashimura
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Patent number: 9085009Abstract: A method of manufacturing a puncture resistant leakless material for tubeless tires, the puncture resistant leakless material manufactured thereof, and a method of spray coating the puncture resistant leakless material to tires are described. Thermoplastic elastomers are used as the framework material for the puncture resistant leakless material. The puncture resistant leakless material resists high temperature, low temperature, oil, and water, has high leakproof properties, and has low manufacturing costs. The puncture resistant leakless material also has a high tear resistance, a great resilience, and a long service life. The raw materials for manufacturing the puncture resistant leakless material fir tubeless tire do not need to undergo vulcanization, resulting in reduced energy consumption and lowered manufacturing costs.Type: GrantFiled: February 24, 2011Date of Patent: July 21, 2015Assignee: Qinze United Industrial Co., Ltd.Inventor: Jian Liu
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Publication number: 20150107743Abstract: Disclosed herein are a method of coating a sealant composition to an inner surface of a tire, and a tire manufactured by the same. The method includes extracting coordinates for coating a sealant composition with reference to a central point of a target tire using a computer-aided design (CAD) file of the target tire; setting robot moving coordinates and setting a coating width based on the extracted coordinates; and coating the sealant composition while moving a nozzle provided to a robot arm and ejecting the sealant composition toward the set coordinates.Type: ApplicationFiled: January 30, 2014Publication date: April 23, 2015Inventor: Dong Won SEONG
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Publication number: 20140345771Abstract: A self-sealing tyre for vehicle wheels includes: a carcass structure, a tread band applied in a radially external position to the carcass structure at least in a crown area of the tyre, a liner applied in a radially inner position to the carcass structure, and a layer of sealing material applied in a radially inner position to the carcass structure and which extends axially at least in all the crown area of the tyre in which the sealing material includes a partially chemically crosslinked composition including an unsaturated styrene thermoplastic elastomer.Type: ApplicationFiled: December 21, 2012Publication date: November 27, 2014Inventors: Luca Giannini, Cristiano Puppi, Marco Nahmias Nanni, Michela Caprio
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Patent number: 8877309Abstract: A self-repairing inflatable article including an inflatable component that includes an interior surface and an exterior surface, a sealed flexible package adjacent to the inflatable component, and a sealant composition disposed in the sealed flexible package. The sealed flexible package is configured to release the sealant composition upon puncture, tearing or other breach of the inflatable component.Type: GrantFiled: February 25, 2014Date of Patent: November 4, 2014Inventor: Carolyn M. Dry
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Patent number: 8726955Abstract: A self-balancing pneumatic tire is provided having a built-in balancing gel system. In one embodiment, the tire, before cure, includes a green pneumatic tire assembly having an uncured tread defining an outermost layer; a first barrier layer; a second barrier layer situated adjacent the first barrier layer and intermediate the first barrier layer and the tread; and first and second gel precursors. The gel precursors are non-flowable prior to cure but flowable after cure. The gel precursors are respectively contained within spaced-apart first and second circumferential regions defined by confronting, non-contacting surfaces of the first barrier layer and the second barrier layer, each circumferential region further situated proximate opposing sidewalls of the tire and having a width of about 5 percent to about 25 percent of a final tread width obtained upon curing of the uncured tire assembly. In one example, the first and/or second barrier layers can be discontinuous.Type: GrantFiled: November 9, 2010Date of Patent: May 20, 2014Assignee: The Goodyear Tire & Rubber CompanyInventors: Ramendra Nath Majumdar, Giorgio Agostini
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Patent number: 8685513Abstract: A self-repairing inflatable article including an inflatable component that includes an interior surface and an exterior surface, a sealed flexible package adjacent to the inflatable component, and a sealant composition disposed in the sealed flexible package. The sealed flexible package is configured to release the sealant composition upon puncture, tearing or other breach of the inflatable component.Type: GrantFiled: February 28, 2013Date of Patent: April 1, 2014Inventor: Carolyn M. Dry
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Patent number: 8646500Abstract: A puncture-resistant multilayer laminate that is impermeable to inflation gases, comprising: a gastight first elastomer layer comprising a polystyrene/polyisobutylene block copolymer thermoplastic elastomer, and optionally an extender oil with a content within a range of 0 to less than 100 phr; and a self-sealing second elastomer layer comprising a thermoplastic styrene elastomer, identical to or different from the first elastomer, and an extender oil with a content greater than 200 phr.Type: GrantFiled: May 20, 2008Date of Patent: February 11, 2014Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements MichelinInventors: Emmanuel Custodero, Pierre Lesage, José Merino Lopez
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Patent number: 8602075Abstract: A self-sealing elastomer composition, in an inflatable article such as a pneumatic tire (1), such composition comprising, as predominant elastomer, a thermoplastic styrene (TPS) elastomer and an extender oil with a content of between 200 and 700 phe (parts per hundred parts of elastomer by weight). An airtight puncture-resistant laminate (10) that can be used in particular in said inflatable article (1), comprises a puncture-resistant first layer (10a) comprising said self-sealing composition and an airtight second layer (10b), for example based on butyl rubber. An inflatable article comprises such a self-sealing composition or such an airtight puncture-resistant laminate.Type: GrantFiled: December 19, 2007Date of Patent: December 10, 2013Assignee: Michelin Recherche et Technique S.AInventors: Loïc Albert, Emmanuel Custodero, Pierre Lesage, José Merino Lopez, Lucien Silvain
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Patent number: 8578986Abstract: The present invention is directed to a pneumatic tire having a built-in seamless polyurethane sealant layer and its preparation.Type: GrantFiled: December 18, 2009Date of Patent: November 12, 2013Assignee: The Goodyear Tire & Rubber CompanyInventor: Ramendra Nath Majumdar
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Patent number: 8573271Abstract: Tubeless tire in the form of a torus open radially inwards with an outer wall and an inner wall, characterized in that at least part of the inner wall is covered with a self-sealing layer comprising a thermoplastic styrene (TPS) elastomer having a Shore 0 hardness of less than 35.Type: GrantFiled: June 19, 2008Date of Patent: November 5, 2013Assignees: Compagnie Generale des Etablisements Michelin, Michelin Recherche et Technique, S.A.Inventors: José´ Merino Lopez, Michel Ahouanto, Pierre Lesage, Frédéric Pialot
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Patent number: 8448743Abstract: Provided are a tire noise reduction device allowing rapid and reliable puncture-repair of a pneumatic tire provided with an annular sound absorbing member on the inner surface of a tread portion of the tire, and a pneumatic tire provided with the tire noise reduction device. The tire noise reduction device includes: the annular sound absorbing member made of a porous material; and a repair liquid permeable layer stacked on an outer peripheral surface of the sound absorbing member. The repair liquid permeable layer has many continuous pores and has a flow resistance lower than that of the porous material. The tire noise reduction device is mounted on the inner peripheral surface of a tread portion of the pneumatic tire.Type: GrantFiled: April 13, 2009Date of Patent: May 28, 2013Assignee: The Yokohama Rubber Co., Ltd.Inventors: Atsushi Tanno, Takumi Sekiguchi
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Patent number: 8430143Abstract: A pneumatic tire including a sealant layer formed from a sealant fluid having adhesive properties that is provided on a tire inner circumferential surface corresponding with a tread portion; and a sound absorbing layer formed from a porous material that is provided via a barrier layer impermeable to the sealant fluid on an inner circumferential surface of the sealant layer; wherein a width W1 of the sound absorbing layer in a tire width direction is from 50 to 90% of a width W2 of the sealant layer in the tire width direction.Type: GrantFiled: June 1, 2010Date of Patent: April 30, 2013Assignee: The Yokohama Rubber Co., Ltd.Inventor: Atsushi Tanno
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Patent number: 8316903Abstract: The present invention is directed to a pneumatic tire having a built-in sealant layer and its preparation. In one embodiment, the pneumatic tire includes an outer circumferential rubber tread and a supporting carcass. An optional rubber inner liner is disposed inwardly from the supporting carcass. A built-in sealant layer is disposed inwardly from the rubber inner liner. The built-in sealant layer provides self-sealing properties to the pneumatic tire. A gas permeable layer is situated adjacent an innermost rubber inner liner and the built-in sealant layer. The innermost rubber inner liner has a plurality of spaced apart openings extending therethrough, which are covered by the gas permeable layer. The tire, with its innermost inner liner with holes and the gas permeable layer, allows for elimination or reduction in blister formation in the tire by permitting gas from the built-in sealant layer to escape.Type: GrantFiled: October 1, 2007Date of Patent: November 27, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Ramendra Nath Majumdar, Aaron Scott Puhala
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Publication number: 20120199260Abstract: A pneumatic tyre with a built-in self-sealing layer includes an outer rubbery tread, a carcass reinforcement, a gastight layer located at an inside position relative to the carcass reinforcement, a separable protective layer positioned innermost, and a self-sealing layer adjacent to the separable protective layer and located at an inside position relative to the gastight layer. The separable protective layer is a thermoplastic film that includes at least one fluoropolymer.Type: ApplicationFiled: July 22, 2010Publication date: August 9, 2012Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., SOCIETE DE TECHNOLOGIE MICHELINInventors: José Merino Lopez, Sébastien Rigo, Michel Ahouanto, Frédéric Pialot, Damien Fombelle
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Patent number: 8215349Abstract: The invention relates to automobile tires or tire assemblies or parts thereof suitable for being balanced by introduction therein of a thixrotropic balancing gel, wherein surfaces of the tire or tire assembly or part thereof which are intended to be in contact with the balancing gel are provided with a surface nanostructure with an average surface roughness in the range of 1-1000 nm. The surface nanostructure will enable the thixotropic balancing gel to move to the location, where it balances the tire, significantly quicker than if the surface in question did not have the surface nanostructure.Type: GrantFiled: July 18, 2007Date of Patent: July 10, 2012Assignee: Lars Bertil CarnehammerInventor: Norbert Seitz
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Patent number: 8146634Abstract: Provided is a pneumatic tire capable of suppressing a flow of a sealant in a sealant layer due to a centrifugal force generated during the running of the tire. A pneumatic tire of the present invention is a pneumatic tire provided with a sealant layer on an inner surface of the tire in a region corresponding to a tread portion of the tire. The pneumatic tire includes a cover sheet disposed on an inner side of the sealant layer in a radial direction of the tire so as to cover the sealant layer. In the pneumatic tire, a mass per unit area of a center portion of the cover sheet is made larger than a mass per unit area of outer portions of the cover sheet. A width of the cover sheet may be made smaller than a width of the sealant layer.Type: GrantFiled: April 7, 2009Date of Patent: April 3, 2012Assignee: The Yokohama Rubber Co., LtdInventor: Takumi Sekiguchi
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Patent number: 8146635Abstract: Disclosed is a pneumatic tire which has an enhanced uniformity of the tire including an adhesive sealant layer disposed inside its tread portion. In a pneumatic tire T including an adhesive sealant layer 5 disposed inward of an inner liner 4 in a region corresponding to its tread portion 1, the adhesive sealant layer 5 is formed of a laminate including: an auxiliary rubber layer 5a disposed closer to the inner liner 4, the compression set of the auxiliary rubber layer 5a being set at 40% or less; and an adhesive sealant material 5b disposed inward of the auxiliary rubber layer 5a.Type: GrantFiled: July 2, 2007Date of Patent: April 3, 2012Assignee: The Yokohama Rubber Co., Ltd.Inventor: Takumi Sekiguchi
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Publication number: 20110259499Abstract: The tire of the present invention has self-sealing property. The tire has an inner tire surface, which is formed with a plurality of protrusions. The protrusions are circumferentially distributed over the inner tire surface. A sealing gel layer is disposed on the inner tire surface and at least partially covers the protrusions to form a composite structure. Thereby, the protrusions can spread the force applied on the sealing gel layer while the tire is rotated rapidly. As such, the problems that the sealing gel layer is concentrated or delaminated can be prohibited.Type: ApplicationFiled: April 22, 2010Publication date: October 27, 2011Inventor: CHUN-FU KUO
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Patent number: 7981940Abstract: Provided is a method of treating a sealing compound, in order to recover from the inside of a pneumatic tire the sealing compound that was used for repairing a puncture, the sealing compound including an aqueous solution having at least rubber latex dispersed therein, the method comprising: solid-liquid separating, by injecting a treating agent into the inside of a pneumatic tire into which the sealing compound was injected, the treating agent comprising at least one of a salt that is a reaction compound of an acid and a base and/or a water-soluble organic solvent, mixing the treating agent with the sealing compound inside the pneumatic tire, and aggregating and solidifying the rubber latex in the sealing compound.Type: GrantFiled: May 26, 2005Date of Patent: July 19, 2011Assignee: Bridgestone CorporationInventors: Shinichi Iwasaki, Rieko Iwasaki, legal representative, Ryuji Izumoto, Daisuke Sugio
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Patent number: 7959849Abstract: Method of applying a layer of material (25, 26) to the inner wall of a cycle tyre (20) in the form of a torus, with an inner wall (28) and an outer wall (29) and having a crown (22) extended by two sidewalls (21), two beads (23a, 23b) and two bead wires (30a, 30b) placed in said beads, said tyre having a given nominal inflation pressure, which comprises the following steps: the tyre (20) is turned inside-out so as to bring the inner wall (28) to the outside of the torus and the outer wall (29) to the inside of the torus; the outer torus wall (29) of the tyre is extended by applying an internal inflation pressure to said outer wall (29) above the nominal inflation pressure of said tyre; the layer of material (25, 26) is applied to the inner wall (28) of the tyre (20); and the tyre (20) is turned inside-out so as to bring the inner wall (28) and the outer wall (29) back into their initial positions.Type: GrantFiled: June 19, 2008Date of Patent: June 14, 2011Assignees: Societe de Technologie Michelin, Michelin Recherche et Technique, S.A.Inventors: José Merino Lopez, Luc Bestgen, Frédéric Pialot
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Publication number: 20110126953Abstract: The present invention relates to a tire puncture sealant and a pneumatic tire containing such puncture sealant as a built-in puncture sealant. The sealant composition contains silica reinforcement and butyl rubber depolymerized in the presence of a balanced and cooperative combination of organoperoxides comprised of a minor amount of 4,4-di(tertiary butylperoxy) valerate depolymerization initiator and a major amount of dicumyl peroxide depolymerization propagator, the combination of which has been observed to have a synergistic effect.Type: ApplicationFiled: December 2, 2009Publication date: June 2, 2011Inventor: Joseph Alan Incavo
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Publication number: 20100307655Abstract: A pneumatic tire including a sealant layer formed from a sealant fluid having adhesive properties that is provided on a tire inner circumferential surface corresponding with a tread portion; and a sound absorbing layer formed from a porous material that is provided via a barrier layer impermeable to the sealant fluid on an inner circumferential surface of the sealant layer; wherein a width W1 of the sound absorbing layer in a tire width direction is from 50 to 90% of a width W2 of the sealant layer in the tire width direction.Type: ApplicationFiled: June 1, 2010Publication date: December 9, 2010Inventor: Atsushi Tanno
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Publication number: 20100300593Abstract: Tubeless tyre in the form of a torus open radially inwards with an outer wall and an inner wall, characterized in that at least part of the inner wall is covered with a self-sealing layer comprising a thermoplastic styrene (TPS) elastomer having a Shore 0 hardness of less than 35.Type: ApplicationFiled: June 19, 2008Publication date: December 2, 2010Applicant: SOCIETE DE TECHNOLOGIE MICHELINInventors: Jose Merino Lopez, Michel Ahouanto, Pierre Lesage, Frederic Pialot
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Publication number: 20100154959Abstract: A tire with a built in sealant comprising: sidewalls, a supporting tire carcass comprised of one or more layers of ply, a pair of beads, and an outer circumferential tread, wherein the sidewalls extend radially inward from the axial outer edges of the tread portion to join the respective beads, and a layer of sealant disposed between the inner liner and a cover layer, the carcass of the tire has a radially innermost layer, wherein the sealant is located over said gas permeable liner, and has a first outer edge and a second outer edge, wherein on each side of said sealant adjoining with the first outer edge and the second outer edge is two or more layers of butyl rubber inner liner.Type: ApplicationFiled: November 23, 2009Publication date: June 24, 2010Inventors: Ramendra Nath Majumdar, Aaron Scott Puhala, Patrick David Marks