Pneumatic Tire Or Inner Tube Patents (Class 152/450)
  • Patent number: 10821777
    Abstract: This invention relates to a tire with a tread of a rubber composition for promoting a combination of beneficial wet traction and reduced rolling resistance, while limiting any loss of winter traction at low temperatures. The tread rubber composition contains a combination of high and lower glass transition temperature (Tg) elastomers. Its reinforcing filler is primarily precipitated silica. The high Tg elastomer is comprised of synthetic high vinyl polybutadiene rubber and the lower Tg elastomer is comprised of at least one of natural and synthetic cis 1,4-polyisoprene rubber. The tread rubber composition may contain at least one of vegetable oil based rubber processing aid and traction promoting resin. The tread rubber composition is intended to be exclusive of styrene-containing elastomers.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: November 3, 2020
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Nihat Ali Isitman, Paul Harry Sandstrom, Luisa Fernanda Munoz Mejia
  • Patent number: 10800209
    Abstract: Provided is a tire which includes a circular tire frame formed from a resin material that contains a linear low-density polyethylene having a crystallization degree of from 110 J/g to 138 J.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: October 13, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Naoyuki Sone, Takahiro Suzuki, Atsushi Fukushima
  • Patent number: 10660398
    Abstract: A rubber member for laser bonding of the present invention containing a rubber ingredient and silica, wherein the silica has an average particle size of more than 50 nm and 120 nm or less, and the amount of the silica is 10 parts by mass to 50 parts by mass based on 100 parts by mass of the rubber ingredient, the rubber member has a laser light transmittance of 30% or more, provided that the laser light transmittance is a transmittance when the rubber member has a thickness of 2 mm and is irradiated with laser light having a wavelength of 808 nm.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: May 26, 2020
    Assignee: ASICS CORPORATION
    Inventors: Katsuhiro Imazato, Hironori Kitayama, Junichiro Tateishi, Sadaki Mori
  • Patent number: 10643763
    Abstract: The direct-current cable includes a conductive portion; and an insulating layer covering an outer periphery of the conductive portion, the insulating layer containing cross-linked base resin and inorganic filler, the base resin containing polyethylene, a BET specific surface area of the inorganic filler being greater than or equal to 5 m2/g and less than or equal to 150 m2/g, and a mean volume diameter of the inorganic filler being less than or equal to 1.0 ?m, the mass ratio of the inorganic filler with respect to the base resin being greater than or equal to 0.001 and less than or equal to 0.05, and the cross-linked base resin being cross-linked by a cross-linking agent containing organic peroxide.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: May 5, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takanori Yamazaki, Yoshinao Murata, Tomohiko Katayama
  • Patent number: 10563047
    Abstract: A rubber composition contains at least: a diene rubber, a silica, a silane coupling agent having a mercapto group, a plasticizer, and an oil and/or a resin; from 50 to 200 parts by mass of the silica per 100 parts by mass of the diene rubber and from 2 to 20 mass % of the silane coupling agent having a mercapto group relative to the amount of the silica being blended; and a total amount of the plasticizer and the oil and/or the resin being 60 parts by mass or greater per 100 parts by mass of the diene rubber.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: February 18, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Naoki Kushida
  • Patent number: 10538047
    Abstract: A pneumatic tire manufacturing method is provided in which raw cover molding is suitably performed with no, or a minimal amount of, down-stitching in the manufacture of SOT-structure pneumatic tires; also provided is a pneumatic tire. This pneumatic tire manufacturing method involves a first cover molding step for molding a first cover having a sidewall, an inner lining, a ply, beads and a tread-side edge, a tread ring forming step for forming a tread ring having a breaker, a band and a tread center part, a shaping step for pressure-bonding the tread ring and the first cover to mold this to the shape of the raw cover, and a turn-up step for bonding the side wall to the lateral surface of the first cover, wherein the tread-side edge is formed in a position adjacent to the end of the tread center portion in the shaping step, and in the turn-up step, the tread-side edge and the tread center part are bonded together.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: January 21, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Masayuki Sakamoto, Takamichi Sagawa
  • Patent number: 10532615
    Abstract: A pneumatic tire manufacturing method is provided in which raw cover molding is suitably performed with no, or a minimal amount of, down-stitching in the manufacture of SOT-structure pneumatic tires; also provided is a pneumatic tire. This pneumatic tire manufacturing method involves: a step in which a sidewall, an inner liner, and a ply are bonded on a first molding drum, a pair of beads is set, and the tread side part is formed on the side wall, forming a first cover; a step in which a breaker and band are bonded on a second molding drum and the tread center part is formed on the band, shaping the tread ring; a step in which the first cover is inserted inside of the tread ring and the first cover is inflated, bonding the tread ring and the first cover with pressure; and a step in which the sidewall is folded back towards the lateral surface of the inflated first cover and bonded to the lateral surface of the first cover, and the tread side part and the tread center part are bonded together.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: January 14, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Masayuki Sakamoto, Takamichi Sagawa
  • Patent number: 10479880
    Abstract: Provided are a rubber composition for tires which achieves both abrasion resistance and processability while maintaining fuel economy, and a pneumatic tire including the rubber composition. A rubber composition for tires, containing an organosilicon compound represented by the average compositional formula (I) below having a ratio of the number of sulfur atoms to the number of silicon atoms of 1.0 to 1.5, wherein x represents the average number of sulfur atoms; m represents an integer of 6 to 12; and R1 to R6 are the same or different and each represent a C1-C6 alkyl or alkoxy group, at least one of R1 to R3 and at least one of R4 to R6 are the alkoxy groups, and two or more of the alkyl or alkoxy groups for R1 to R6 may be joined to form a ring.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 19, 2019
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryuichi Tokimune, Tsuyoshi Tsuchida, Ryota Kitago, Soh Ishino, Hiroyuki Kishimoto, Munenao Hirokami, Tetsuro Yamada
  • Patent number: 10472492
    Abstract: As an additive composition capable of improving the processability, the low loss property and the breaking resistance of a silica compounded rubber composition, and a rubber composition excellent in processability, low loss property and breaking resistance, this disclosure provides an additive composition for silica compounded rubber composition comprising a glycerin fatty acid ester, wherein: the glycerin fatty acid ester is an ester of a glycerin and two or more fatty acids, a fatty acid component which is the most among the two or more fatty acids constituting the glycerin fatty acid ester being 10 to 90 mass % of all fatty acids; and a monoester component is contained in an amount of 50 to 100 mass % in the glycerin fatty acid ester, and provides a rubber composition comprising a diene based rubber, a silica, and the additive composition for silica compounded rubber composition.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: November 12, 2019
    Assignees: BRIDGESTONE CORPORATION, KAO CORPORATION
    Inventors: Makiko Yonemoto, Tetsuo Takano, Motoi Konishi
  • Patent number: 10465016
    Abstract: Provided is a modified rubber for a tire (A) obtained by modifying a natural rubber and/or a synthetic rubber with a compound represented by formula (1): wherein X is an acid to form a salt with a guanidine site.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: November 5, 2019
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Tomoki Iwata, Haruka Sakai, Kazuyoshi Uera
  • Patent number: 10442259
    Abstract: Provided is a tire with self-inflation device. The tube is inserted inside the side portion where the extension and contraction movements of the tire are mostly occurring in order to further enhance the efficiency of the air supply to the tire cavity during driving. The air compressed towards the driving direction is injected to the tire cavity, and the air from the outside is charged to the tube due to the negative pressure formed in the tube located in the opposite side of driving. The durability is enhanced by reducing the exposed portion of the regulator.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: October 15, 2019
    Assignee: KUMHO TIRE CO., INC.
    Inventors: Seong Jong Park, Sang Do Na, Hyoung Seok Kim, In Chul Sung
  • Patent number: 10427464
    Abstract: Disclosed is a pneumatic tire that includes a tread having a pattern asymmetrical about the tire equatorial plane, and that may reduce cavity resonance and has good steering stability. A pneumatic tire includes a tread portion having a pair of tread halves, the tread halves extending between the tire equatorial plane and respective outer ends in the tire width direction of the tread portion, respectively, and having different negative ratios. The tread portion has short fibers fixed to at least a portion of a tire inner peripheral surface of the tread portion, and one of the tread halves with a higher negative ratio has a higher short-fiber fixation area ratio than that of the other tread half.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: October 1, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Toshiyuki Watanabe
  • Patent number: 10428205
    Abstract: The present invention is directed to a pneumatic tire having a tread comprising a radially outer cap layer and radially inner cap layer underlying the outer cap layer; the outer cap layer comprising a vulcanizable rubber composition comprising, based on 100 parts by weight of elastomer (phr), (A) from about 80 to about 20 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from ?85° C. to ?50° C.; (B) from about 20 to about 80 phr of natural rubber; and (C) from 30 to 70 phr of a process oil; (D) from 70 to 150 phr of silica; wherein the weight ratio of silica to oil in the outer cap is less than 2.2; the inner cap layer comprising a vulcanizable rubber composition comprising: (i) from about 60 to about 40 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from ?85° C. to ?50° C.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 1, 2019
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Nihat Ali Isitman, Georges Marcel Victor Thielen
  • Patent number: 10391818
    Abstract: Disclosed are a pneumatic tire that includes a tread having a pattern asymmetrical about the tire equatorial plane, and that is easy to produce and may surely reduce cavity resonance without lowering repair efficiency, and a method of producing the same. A pneumatic tire includes a tread portion having a pair of tread halves, the tread halves extending between the tire equatorial plane and respective outer ends in the tire width direction of the tread portion, respectively, and having different negative ratios. The tread portion has short fibers fixed to at least a portion of a tire inner peripheral surface of the tread portion, and one of the tread halves with a higher negative ratio has a lower short-fiber fixation area ratio than that of the other tread half.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: August 27, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Toshiyuki Watanabe
  • Patent number: 10377178
    Abstract: The present invention aims to provide a rubber composition for tires that can improve processability, crack resistance, ozone resistance, discoloration resistance, and tire appearance while maintaining a good balance between them, and also to provide a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires, containing: a rubber component; an antioxidant; and polyether, the rubber component having a combined content of polybutadiene rubber, natural rubber, and polyisoprene rubber of 80% by mass or more per 100% by mass of the rubber component, the rubber composition containing the antioxidant in an amount of 0.3 to 7.0 parts by mass per 100 parts by mass of the rubber component, the polyether having an average mass content of at least two consecutive polyethylene oxide units of 85% or less of the polyethylene oxide mass content of the polyether.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: August 13, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryuichi Tokimune, Naoya Kitamura, Kouji Kawaguchi, Naoya Hashimoto
  • Patent number: 10315468
    Abstract: The present invention provides a resonance noise reduction tire having a sound absorbing material mounted therein. The resonance noise reduction tire has a sound absorbing material which is mounted therein so as to be adhered to an inner liner formed inside the tire in a circumferential direction thereof. The sound absorbing material is adhered to the inner liner in the circumferential direction thereof, and is configured so that opposite ends thereof are adhered with being separated at a predetermined interval so as not to be abutted to each other.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: June 11, 2019
    Assignee: KUMHO TIRE CO., INC.
    Inventor: Jongsik Lee
  • Patent number: 10286737
    Abstract: A pneumatic tire of the present technology includes a tread portion, sidewall portions, bead portions, and a belt-shaped sound-absorbing member bonded to a region on a tire inner surface corresponding to the tread portion along the tire circumferential direction with an adhesive layer disposed between the tire inner surface and the sound-absorbing member. In such a pneumatic tire, an air agitation portion formed by an interruption in the sound-absorbing member is disposed in at least one location on the tire circumference.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 14, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Atsushi Tanno
  • Patent number: 10239355
    Abstract: A pneumatic tire includes a tread portion provided with a pair of central blocks arranged on both sides of a tire equator. Each of the central blocks includes a ground contacting face having an axially inner block edge facing the tire equator. The inner block edge extends in a V-shaped manner including a first inclined edge and a second inclined edge inclined in an opposite direction to the first inclined edge. The second inclined edge has a circumferential length shorter than a circumferential length of the first inclined edge. Each of the central blocks includes a first portion having the first inclined edge and a second portion having the second inclined edge. The second portion of the central block includes an end wall at an opposite side to the first portion. The end wall includes a stepwise wall extending in steps toward a groove bottom.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: March 26, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mitsuru Sueyoshi, Akihiro Tamugi
  • Patent number: 10233313
    Abstract: The present technology provides a rubber composition including: (A) 100 parts by mass of a diene rubber; (B) from 5 to 200 parts by mass of silica; (C) from 1 to 20 mass % of a silane coupling agent relative to the silica; and (D) from 1 to 20 mass % of a glycerin mono-fatty acid ester relative to a mass of the silica (B), the glycerin mono-fatty acid ester being derived from a fatty acid having from 8 to 24 carbons; not less than 10 parts by mass out of 100 parts by mass of the diene rubber (A) having a hetero atom-containing functional group in a main chain and/or a terminal thereof.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: March 19, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Shin Tsukishima, Miyuki Oka, Makoto Ashiura
  • Patent number: 10174185
    Abstract: Provided is a pneumatic tire including a base tread formed from a rubber composition that can highly improve fuel economy, wet grip performance, and abrasion resistance while maintaining the balance between them. The pneumatic tire includes a base tread formed from a rubber composition, the rubber composition containing predetermined amounts of an isoprene rubber, a specified hydrogenated terpene resin, and a specified carbon black.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: January 8, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hirotoshi Otsuki
  • Patent number: 10167375
    Abstract: Provided is a rubber composition that, when adopted in a tire member such as a tread, displays low heat generation, high abrasion resistance, and high cut resistance, and enables excellent fatigue cracking resistance to be realized. The rubber composition contains carbon black that satisfies relationship formulae (1) to (3), shown below. 62.5×24M4DBP+hydrogen amount of carbon black?8337.5??(1) 24M4DBP?0.25×CTAB?62.5??(2) Dst+0.75×?D50?152.5??(3).
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: January 1, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Satoshi Hamatani
  • Patent number: 10160271
    Abstract: The pneumatic tire according to the present technology includes: one or more mechanical fastener members (A) disposed on the tire inner surface, which is one member of the pair of mechanical fasteners that can be separated into two members (A), (B) and that can be engaged with each other and which is secured to the tire cavity side, and the mechanical fastener members (A), (B) include a lock mechanism for locking the engagement.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: December 25, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Atsushi Tanno, Hayato Sakamoto
  • Patent number: 9962995
    Abstract: The invention relates to a bicycle tire with high riding comfort. A damping rubber insert (3) made from a highly elastic rubber is arranged between the tire tread (2) and the tire carcass. Said damping rubber insert (3) has a material thickness of between 0.2 and 2 mm, and the carcass insert ends (10) extend to a maximum of the lateral edge areas of the tire tread (2).
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: May 8, 2018
    Assignee: Continental Reifen Deutschland GmbH
    Inventor: Christian Wurmbäck
  • Patent number: 9920189
    Abstract: Provided is a rubber composition for a tire tread containing: a diene rubber; silica in an amount of from 60 to 200 parts by mass per 100 parts by mass of the rubber; a polysiloxane represented by the average composition formula: (A)a(B)b(C)c(D)d(R1)eSiO(4-2a-b-c-d-e)/2; and an alkyl triethoxysilane having an alkyl group with from 7 to 20 carbon atoms. Also provided is a pneumatic tire using this rubber composition in the tire tread.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: March 20, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masaki Sato, Satoshi Mihara, Yoshihiro Goto
  • Patent number: 9873780
    Abstract: This invention relates to a tire with tread for promoting a combination of winter service at low temperatures and for promoting wet traction. The tread rubber contains a combination of a high or low Tg styrene/butadiene elastomer, cis 1,4-polybutadiene rubber, reinforcing filler comprised of precipitated silica, rubber processing oil and tris(2-ethyl hexyl) phosphate.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: January 23, 2018
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Paul Harry Sandstrom
  • Patent number: 9790301
    Abstract: Copolymers having a substantially heterogeneous composition distribution and strong UV absorption are the direct reaction product of an isoolefin and at least one terpene having the molecular formulae of (C5H8)n where n is equal to or greater than two, and optionally additional monomers. More specifically, the invention relates to copolymers of isobutylene and alloocimene that exhibit thermoplastic elastomeric properties and exhibit strong filler interaction. The present invention also relates to methods for producing copolymers of at least one isoolefin and at least one terepene by a two-phase living polymerization that produces a substantially linear triblock and multiblock copolymer having substantially heterogeneous distribution of the isoolefin and terpene units.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: October 17, 2017
    Assignee: The University of Akron
    Inventor: Judit E. Puskas
  • Patent number: 9758000
    Abstract: A self-inflating tire assembly includes an air tube connected to a tire and defining an air passageway, the air tube being composed of a flexible material operative to allow an air tube segment opposite a tire footprint to flatten, closing the passageway, and resiliently unflatten into an original configuration. The air tube is sequentially flattened by the tire footprint in a direction opposite to a tire direction of rotation to pump air along the passageway to a regulator device. The regulator device regulates the inlet air flow to the air tube and the outlet air flow to the tire cavity.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: September 12, 2017
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Daniel Paul Luc Marie Hinque
  • Patent number: 9662944
    Abstract: A self-inflating tire assembly includes an air tube connected to a tire and defining an air passageway, the air tube being composed of a flexible material operative to allow an air tube segment opposite a tire footprint to flatten, closing the passageway, and resiliently unflatten into an original configuration. The air tube is sequentially flattened by the tire footprint in a direction opposite to a tire direction of rotation to pump air along the passageway to a regulator device. The regulator device regulates the inlet air flow to the air tube and the outlet air flow to the tire cavity.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: May 30, 2017
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Daniel Paul Luc Marie Hinque, Anne Therese Peronnet-Paquin, Gilles Bonnet, Gauthier Piret
  • Patent number: 9637613
    Abstract: A composition includes a diene rubber and a metal soap of the formula: M being a metal with an oxidation state of +3 or +4, and each R being any independently selected organic moiety including hydrogen. In addition, a method of making a rubber composition includes combining a polar solvent, a base, and a carboxylic acid and mixing these to form a Solution A. A source of metal ions in solution is added to Solution A, whereby mixing forms Product A. The metal in the source of metal ions is selected from the group consisting of metals with an oxidation state of +3 or +4. The product is isolated from Solution A and then is combined with a diene rubber composition to form a useful article, such as the tread of a tire.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: May 2, 2017
    Assignee: Bridgestone Corporation
    Inventor: Xiaorong Wang
  • Patent number: 9631074
    Abstract: A sulfur-crosslinkable rubber blend which includes from 60 to 100 phr of at least one butadiene rubber and 51 phr or more of at least one hydrocarbon resin which is built up to the extent of 30 to 100 wt. % from aromatic monomers. In some aspects the sulfur-crosslinkable rubber has from 51 to 300 phr of the at least one hydrocarbon resin which is built up to the extent of 30 to 100 wt. % from aromatic monomers, and in some cases, the hydrocarbon resin is built up to the extent of 30 to 100 wt. % from at least one aromatic monomer from the group consisting of alpha-methylstyrene and/or styrene and/or vinyltoluene and/or indene and/or coumarone and/or methylindene and/or methylcoumarone.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 25, 2017
    Assignee: Continental Reifen Deutchland GmbH
    Inventors: Fabian Peters, Thorsten Torbrügge, Carla Recker
  • Patent number: 9567456
    Abstract: Provided is a rubber composition for a tire tread containing: a diene rubber; silica in an amount of from 60 to 200 parts by mass per 100 parts by mass of the rubber; a polysiloxane represented by the average composition formula: (A)a(B)b(C)c(D)d(R1)eSiO(4-2a-b-c-d-e)/2; and an alkyl triethoxysilane having an alkyl group with from 7 to 20 carbon atoms. Also provided is a pneumatic tire using this rubber composition in the tire tread.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: February 14, 2017
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masaki Sato, Satoshi Mihara, Yoshihiro Goto
  • Patent number: 9481209
    Abstract: A pneumatic vehicle tire includes a carcass, a tire belt configured radially outside of the carcass and a profiled tread. The tire belt is formed of a plurality of tire belt plies, of which at least two tire belt plies are configured as working plies having parallel reinforcements made of steel and embedded in rubber, and having an angle of 10° to 24° with respect to the circumferential direction (U). The reinforcements of the one working ply have an axial direction of inclination opposite with respect to the reinforcements of the other working ply. The reinforcements of the first of the two working plies have an extendability D of D<0.2% at 10% of the breaking force, and the reinforcements of the second of the two working plies have an extendability D of D>0.2% at 10% of the breaking force.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: November 1, 2016
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Theresia Becker, Thomas Glasewald
  • Patent number: 9359462
    Abstract: A modified high cis butadiene-isoprene copolymer, a method for producing the same, and a tire having the aforementioned polymer are provided. The method includes performing a polymerization step for forming a high cis butadiene-isoprene copolymer having an organometallic active site and reacting which copolymer with a modifier mixture via the organometallic active site for forming the modified high cis butadiene-isoprene copolymer. The modifier mixture comprises a first modifier and a second modifier. The first modifier has a chemical formula of X—R1-Si(R2)3, wherein X is an glycidoxy functional group, an isocyanate functional group, or a 2-(3,4-epoxycyclohexyl group), R1 is an alkylene group, and R2 is an alkyl group or an alkoxy group. The second modifier has a chemical formula of R3-Si(R4)3, wherein R3 is an alkoxy group or an aryloxy group, and R4 is an alkyl group, an alkoxy group, an aryloxy group or a cycloalkyl group.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: June 7, 2016
    Assignee: CHI MEI CORPORATION
    Inventors: Chih-Cheng Lee, Hung-Jui Kuo
  • Patent number: 9308784
    Abstract: A self-inflating tire assembly comprises a tire having a tread region, first and second sidewalls, and first and second bead regions, wherein the first and second sidewalls extend respectively from the first and second bead regions to the tread region, wherein the tread region and the first and second sidewalls enclose an annular tire cavity. Further, the assembly comprises an air passageway connected to one of the sidewalls and extending essentially in a circumferential direction of the tire for pumping air from outside of the tire into the tire cavity, wherein the air passageway has an air passageway inlet for receiving air from outside of the tire and an air passageway outlet for releasing air into the tire cavity.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: April 12, 2016
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Daniel Paul Luc Marie Hinque
  • Patent number: 9248707
    Abstract: An intelligent tire pressure management system capable of real-time tire pressure monitoring, vehicle load detection, and automatic tire inflation and deflation for maintaining optimal tire pressure in a commercial vehicle. Additional functions include counting tire rotations for calculating and recording distance travelled for each tire, and detecting wheel sliding due to locked-up tires. The system includes a chassis-mounted control box connecting to the vehicle air supply, a hubcap-mounted dual wheel valve apparatus integrated with a rotary union assembly that connects through the vehicle hollowed axles to the air tubes from the control box. The inflation/deflation supporting dual wheel valve apparatus has an embedded electronic unit that monitors individual tire pressure and temperature in real time, and communicates with the control box over the power line. Furthermore a load sensor integrated with the control box provides the system with the current vehicle load information.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: February 2, 2016
    Inventors: Joe Huayue Zhou, Steven Hiuman Wong
  • Patent number: 9233582
    Abstract: A self-inflating tire assembly includes an air tube connected to a tire and defining an air passageway, the air tube being composed of a flexible material operative to allow an air tube segment opposite a tire footprint to flatten, closing the passageway, and resiliently unflatten into an original configuration. The air tube is sequentially flattened by the tire footprint in a direction opposite to a tire direction of rotation to pump air along the passageway to a regulator device. The regulator device regulates the inlet air flow to the air tube and the outlet air flow to the tire cavity.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: January 12, 2016
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Daniel Paul Luc Marie Hinque, Anne Therese Peronnet-Paquin, Gauthier Piret, William Alain Talbot, Yannick Raymond Georges Haegel
  • Patent number: 9150714
    Abstract: A sulfur-crosslinkable rubberizing mixture for strengthening elements in motor vehicle pneumatic tires comprises 70 to 100 phr (parts by weight, based on 100 parts by weight of total rubbers in the mixture) of natural rubber, up to 30 phr of at least one polybutadiene, up to 15 phr of at least one carbon black, 20 to 100 phr of at least one high-dispersibility silica, at least one silane coupling agent and a bonding system. The invention further relates to motor vehicle pneumatic tires comprising the sulfur-crosslinked rubberizing mixture. For improved resistance to cracking and growth of cracks with good adhesion and good mechanical and dynamic properties, the high-dispersibility silica has a CTAB number to ASTM D 3765 of more than 130 m2/g.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: October 6, 2015
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Thomas Kramer, Carla Recker, Thorsten Torbruegge, Marc Kreye
  • Patent number: 9120352
    Abstract: An angle of elevation (?) of an intersection point (A), formed between a line (q) connecting intersection points (A, B) and a reference line (n) traversing a center of curvature (C) of an arc and parallel to the tire rotation axis, is from 40° to 60°, where a curve tracing the innermost region in the tire radial direction is approximated by the arc with the method of least squares, the intersection point (A) is an intersection point of the ply main body (6a) with a normal line (m) from the center of curvature (C) of the arc to a part of the ply main body (6a) convex outward in the tire width direction, and the intersection point (B) is an intersection point of the ply main body (6a) with the reference line (n). A radius of curvature of the arc is from 5 mm to 80 mm.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: September 1, 2015
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Keiichi Kurita
  • Publication number: 20150136298
    Abstract: A multilayer laminate, which is usable as a reinforcing element for a finished article or for a semifinished product made of rubber, such as a tyre, includes at least one polymer film having, in any tensile direction in the film's plane, a Young's modulus that is greater than 500 MPa. The film is positioned between and in contact with two layers formed of a rubber composition, such as natural rubber. Each layer formed of the rubber composition exhibits, in a crosslinked state, a secant modulus that, in extension at 10% elongation, is greater than 30 MPa, with between 30 and 150 MPa being preferable for the secant modulus.
    Type: Application
    Filed: February 21, 2013
    Publication date: May 21, 2015
    Applicant: Michelin Recherche et Technique S.A.
    Inventors: Jean-Michel Huyghe, Christophe Le Clerc, Aline Riou, Anne-Lise Thuilliez
  • Patent number: 9033014
    Abstract: This invention relates to a rubber composition including a polyisoprene rubber having a very high cis-1,4-bond content and having an excellent balance between dynamic properties and processability, and more particularly to a rubber composition comprising as a rubber component (A) a synthetic polyisoprene rubber having a cis-1,4-bond content of not less than 99.0%, a 3,4-bond content of not more than 0.5% and a Mooney viscosity ML1+4 (100° C.) of 20-110 and (B) a natural rubber.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: May 19, 2015
    Assignee: Bridgestone Corporation
    Inventors: Eiju Suzuki, Yoichi Ozawa
  • Patent number: 9034980
    Abstract: A pneumatic tire for a commercial vehicle with a tread, wherein at least the part of the tread which comes into contact with the road contains a sulphur-vulcanized rubber mixture. The sulphur-vulcanized rubber mixture contains 90 to 50 phr (parts by weight, based on 100 parts by weight, of all of the rubbers in the mixture) of natural rubber, 10 to 50 phr of at least one polybutadiene having a glass transition temperature Tg of ?110 to ?65° C. and 5 to 50 phr of at least one aliphatic and/or aromatic hydrocarbon resin having a softening point (ring and ball to ASTM E 28) of 0 to 150° C., and a mean molecular weight Mn of less than 2000 g/mol and a polydispersity D=Mw/Mn of 1 to 5.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: May 19, 2015
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Carla Recker, Philipp Koelle, Thomas Kramer, Christoph Jocher, Thorsten Torbruegge, Fabian Dettmer, Norbert Daldrup
  • Publication number: 20150122390
    Abstract: A valve stem-based air maintenance tire assembly and method of operation is provided employing a tire mounted air pumping system, The assembly includes a rim-mounted pressure regulator positioned within a tire cavity opposite an inward end of a tire valve stem to selectively open and close pressurized air flow from a valve stem internal passageway into the tire cavity. An elongate valve stem shaft is mounted within the valve stem air passageway and reciprocally moves axially to close off and open the valve stem air passageway to create or close a pressurized air path into the tire cavity as needed.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 7, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventor: Michael Joseph Durr
  • Publication number: 20150122391
    Abstract: A pneumatic tire comprises a sidewall, an annular tire cavity, and a hydraulic actuator connected to the sidewall inside the annular tire cavity, wherein the hydraulic actuator has a flexible reservoir for containing a hydraulic fluid, and an opening allowing hydraulic fluid to enter the reservoir and to exit the reservoir. Further, the hydraulic actuator comprises a lever arm connected to the sidewall and holding the flexible reservoir between the lever arm and the sidewall, wherein the lever arm comprises a fluid channel allowing hydraulic fluid to flow from the reservoir through the opening out of the lever arm.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventors: Daniel Paul Luc Marie Hinque, Anne Therese Peronnet-Paquin, Edwin Deerenberg, Yannick Raymond Georges Haegel
  • Publication number: 20150122389
    Abstract: An air maintenance tire assembly and method of operation includes a pressurized air supply assembly for supplying pressurized air to a tire cavity through an elongate outward projecting, valve stem passageway. An elongate centrally disposed shaft within the valve stem reciprocally moves axially in the valve stem internal air passageway between a passageway-opening axial position and a passageway-closing axial position. A pressure regulator is provided to move the elongate shaft axially between the passageway-opening and passageway-closing positions responsive to a detected air pressure level within the tire cavity.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 7, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventor: Michael Joseph Durr
  • Publication number: 20150122388
    Abstract: An air maintenance tire assembly includes a tire having an elongate valve stem projecting outward from the tire cavity and a tire sidewall having an elongate sidewall groove formed therein and housing an elongate air tube. A connecting tube extends between the air tube and the valve stem, the connecting tube having an internal connecting air passageway for directing air forced along the air tube air passageway into the internal valve stem passageway as the tire rolls over a ground surface.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 7, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventor: Michael Joseph Durr
  • Patent number: 9022086
    Abstract: A pneumatic tire that is provided with a first fastener of a separatable pair of mechanical fasteners on a tire inner surface, wherein, even in cases where a desired object is engaged/fixed using only one fastener, the object does not rotate having the fastener as a central axis when the tire is in use. A first fastener of the pair of mechanical fasteners is provided on a tire inner surface, and the mechanical fasteners are provided with a rotation preventing mechanism for preventing the fasteners from mutually rotating when the pair of mechanical fasteners are engaged.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: May 5, 2015
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Atsushi Tanno, Daisuke Kanenari
  • Patent number: 9022087
    Abstract: A rubber composition for tire treads is obtained by blending, per 100 parts by mass of a diene rubber, 5 to 150 parts by mass of silica and 0.5 to 20 parts by mass of a silicone oligomer represented by the following siloxane average formula (1): (X)a(Y)b(R1)c(R2)dSiO(4-a-b-c-d)/2 (wherein X is a mercapto group-containing organic group; Y is a hydrolyzable group, R1 is a monovalent hydrocarbon group having from 4 to 10 carbon atoms, R2 is a monovalent hydrocarbon group having from 1 to 3 carbon atoms, 0<a<1, 0<b<3, 0<c<2, 0?d<2, and 0<a+b+c+d<4). The diene rubber contains an aromatic vinyl-conjugated diene copolymer in an amount of at least 50 parts by mass per 100 parts by mass of the diene rubber, the aromatic vinyl-conjugated diene copolymer having an aromatic vinyl content of 20 to 45 mass % and a vinyl bond content in the conjugated diene of 10 to 50%.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 5, 2015
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Naoki Kushida
  • Patent number: 9023928
    Abstract: The present invention provides a rubber composition that improves in terms of the fuel economy of a rubber composition containing an isoprene-based rubber and also offers favorable durability and favorable processability or adhesion to steel cords, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a bead apex, sidewall packing, base tread, or breaker cushion, including: a specific rubber component; a specific amount of a specific carbon black; a specific amount of sulfur; and a specific amount of a compound represented by formula (I) below. The present invention also relates to a rubber composition for a steel cord topping, strip adjacent to steel cords, or tie gum, including: a specific rubber component; a specific amount of a specific carbon black; a specific amount of an organic acid cobalt salt; and a specific amount of a compound represented by the formula (I).
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: May 5, 2015
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Tatsuya Miyazaki, Masanobu Nakamura
  • Patent number: 9016339
    Abstract: A pneumatic tire including a separatable pair of mechanical fasteners wherein a first fastener of the pair of mechanical fasteners is provided on a tire inner surface. In this pneumatic tire, the obtained engagement force of the pair of mechanical fasteners is great and is essentially free of variations (positional variation within the tire and variation from tire to tire); the engagement force deteriorates/declines minimally over time due to extreme usage conditions including repetitive deformation and compaction over an extended period of time caused by tire rotation at high speeds in a state of relatively elevated temperatures; and the desired engagement force can be maintained over an extended period of time.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: April 28, 2015
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Atsushi Tanno, Masatoshi Kuwajima
  • Patent number: 9016341
    Abstract: Bicycle tires with at least one reinforcement layer that contains strength supports and that is arranged between carcass and tread rubber and/or between carcass layers below the tread rubber and/or within the tread rubber. For a high resistance to puncturing with low weight, the reinforcement layer contains multifilament threads of more than 30 polyester/polyarylate filaments, and the filaments are spun from molten liquid-crystal polymer.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: April 28, 2015
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Wolfgang Klapp, Wolfgang Bende