Patents Assigned to The Yokohama Rubber Company
  • Patent number: 10654318
    Abstract: In view of the above, the disclosure provides a non-pneumatic tire capable of enhancing a load supporting performance and a shock absorbing effect and improving a braking and traction performance. The present disclosure provides a non-pneumatic tire comprising a band part and a spoke part; where, a band part includes an inner band and an outer band that is separated from the inner band and surrounds an outer peripheral surface of the inner band; and where, a spoke part includes a plurality of first spokes that is arranged in a circumferential direction between the inner band and the outer band and connects the inner band and the outer band. Furthermore, according to another embodiment, a spoke part may include second spokes that connected to first spokes adjacent to each other at wherein first embodiment.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 19, 2020
    Assignees: KUMHO TIRE CO., INC., THE YOKOHAMA RUBBER COMPANY, LTD.
    Inventors: Kee-Woon Kim, Chang-Jung Park, Chul-Woo Kwark, Gwi-Sung Shin, Soon-Wook Hwang, Michio Shimizu, Jun Matsuda
  • Patent number: 10538130
    Abstract: A non-pneumatic tire includes a band part, including an inner band and an outer band that is separated from the inner band and surrounds an outer peripheral surface of the inner band; and a spoke part, extending in a circumferential direction between the inner band and the outer band, having a circumferential cross section having one or more holes.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: January 21, 2020
    Assignees: KUMHO TIRE CO., INC., THE YOKOHAMA RUBBER COMPANY, LTD.
    Inventors: Kee-Woon Kim, Chul-Woo Kwark, Chang-Jung Park, Gwi-Sung Shin, Soon-Wook Hwang, Michio Shimizu, Jun Matsuda
  • Patent number: 9481208
    Abstract: A tire according to an embodiment of the present invention specifically has the annular inner ring band and the annular outer ring band separated from and concentric with the inner ring band, on the outer peripheral side of the wheel, and includes an air bag between the inner ring band and the outer ring band, the air bag including the air intake/discharge mechanism that communicates with the outside. A support body for coupling the inner ring band and the outer ring band is included. A plurality of the air bags is present in a peripheral direction of the tire. Furthermore, the outer ring band, is formed of a rubber composition for a tire. An air discharge hole of the air bag communicates with an outer most layer of the outer ring band. With this configuration, the tire that has advantages of both of a non-pneumatic tire and a pneumatic tire is realized.
    Type: Grant
    Filed: April 21, 2013
    Date of Patent: November 1, 2016
    Assignee: The Yokohama Rubber Company, Limited
    Inventors: Jun Matsuda, Yoshiaki Hashimura, Yasunobu Seki
  • Patent number: 9150712
    Abstract: A rubber composition for a tire tread contains styrene-butadiene rubber in a compounding amount of 100 parts by weight, silica in a compounding amount of 90 to 170 parts by weight, and an aromatic modified terpene resin in a compounding amount of 10 to 30 parts by weight. The styrene-butadiene rubber contains 40 to 100% by weight of solution-polymerized styrene-butadiene rubber (S-SBR1) and 60 to 0% by weight of solution-polymerized styrene-butadiene rubber (S-SBR2), the total content thereof being 100% by weight. The S-SBR1 has a styrene content of 30 to 38% by weight and a vinyl content of 60 to 80% by weight, the total content thereof being 100% by weight, a glass transition temperature of ?20 to ?5° C., and a weight average molecular weight of 1,000,000 to 1,800,000.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: October 6, 2015
    Assignee: The Yokohama Rubber Company, Limited
    Inventors: Youichi Takizawa, Naoki Kushida
  • Patent number: 8993659
    Abstract: A rubber composition contains diene-based rubber, silica, a sulfur-containing silane coupling agent, and an amine compound. The amine compound is indole, indigo, and derivatives thereof each of which is represented by a predetermined formula. The content of the silica is 20 to 120 parts by mass based on 100 parts by mass of the diene-based rubber. The content of the sulfur-containing silane coupling agent is 3 to 15 parts by mass based on 100 parts by mass of the silica. The content of the amine compound is 0.5 to 20 parts by mass based on 100 parts by mass of the silica. By the use of the rubber composition with this composition, a tire having improved dispersibility of silica, excellent wet performance, and excellent rolling resistance and showing a suppressed decrease in reinforcing property can be produced.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: March 31, 2015
    Assignee: The Yokohama Rubber Company, Limited
    Inventors: Katsunori Shimizu, Satoshi Mihara
  • Patent number: 8950768
    Abstract: An air cellular cushion according to one aspect of the present disclosure includes: a plurality of air cells; a sensor configured to detect an air cell collapsing to a bottom; a parameter measuring unit configured to measure a parameter indicating a collapse state of the air cell collapsing to the bottom; an indicator configured to output an indication; and a control unit configured to change the indication output from the indicator based on a parameter value measured by the parameter measuring unit.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: February 10, 2015
    Assignee: The Yokohama Rubber Company, Limited
    Inventor: Hideki Nihei
  • Publication number: 20140155524
    Abstract: A rubber composition contains diene-based rubber, silica, a sulfur-containing silane coupling agent, and an amine compound. The amine compound is indole, indigo, and derivatives thereof each of which is represented by a predetermined formula. The content of the silica is 20 to 120 parts by mass based on 100 parts by mass of the diene-based rubber. The content of the sulfur-containing silane coupling agent is 3 to 15 parts by mass based on 100 parts by mass of the silica. The content of the amine compound is 0.5 to 20 parts by mass based on 100 parts by mass of the silica. By the use of the rubber composition with this composition, a tire having improved dispersibility of silica, excellent wet performance, and excellent rolling resistance and showing a suppressed decrease in reinforcing property can be produced.
    Type: Application
    Filed: September 26, 2011
    Publication date: June 5, 2014
    Applicant: THE YOKOHAMA RUBBER COMPANY, LIMITED
    Inventors: Katsunori Shimizu, Satoshi Mihara
  • Publication number: 20130237653
    Abstract: A rubber composition for a tire tread contains styrene-butadiene rubber in a compounding amount of 100 parts by weight, silica in a compounding amount of 90 to 170 parts by weight, and an aromatic modified terpene resin in a compounding amount of 10 to 30 parts by weight. The styrene-butadiene rubber contains 40 to 100% by weight of solution-polymerized styrene-butadiene rubber (S-SBR1) and 60 to 0% by weight of solution-polymerized styrene-butadiene rubber (S-SBR2), the total content thereof being 100% by weight. The S-SBR1 has a styrene content of 30 to 38% by weight and a vinyl content of 60 to 80% by weight, the total content thereof being 100% by weight, a glass transition temperature of ?20 to ?5° C., and a weight average molecular weight of 1,000,000 to 1,800,000.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 12, 2013
    Applicant: THE YOKOHAMA RUBBER COMPANY, LIMITED
    Inventors: Youichi Takizawa, Naoki Kushida
  • Patent number: 8476349
    Abstract: A rubber composition for a tire is blended with diene-based rubber containing 50 wt % or more of SBR, and 0.2 to 5 parts by weight of cyclic polysulfide represented by the below formula (I), 1 to 30 parts by weight of aromatic denatured terpene resin, 20 to 80 parts by weight of silica, and 40 to 100 parts by weight of carbon black relative to 100 parts by weight of the diene-based rubber. Further, a total blending amount of the silica and the carbon black is 70 to 130 parts by weight. In the formula, R represents a substituted or unsubstituted alkylene group having 2 to 18 carbon atoms, a substituted or unsubstituted oxyalkylene group having 2 to 18 carbon atoms, or an alkylene group including an aromatic ring, x represents an average number of 2 to 6, and n represents an integer of 1 to 15.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: July 2, 2013
    Assignee: The Yokohama Rubber Company, Limited
    Inventor: Naoki Kushida
  • Patent number: 7302836
    Abstract: The present invention provides a tire distortion detecting method, a distortion detector, and a tire which can reduce the occurrence of a deterioration and can be used for a control system such as a stability control system. That is, series of conductors composed of a plurality of conductor pieces 101 and 102 are provided in two different layers. The conductor pieces 101 and 102 are embedded in lines at predetermined intervals in the circumferential direction of a tire 300. A pulsed electromagnetic wave is radiated to the surfaces of metal foils 101 and 102 in the layers from a monitoring device 200 provided in a tire house 400 of a vehicle. The monitoring device 200 receives a pulsed electromagnetic wave reflected from the metal foils 101 and 102 in the layers or a member other than the metal foils.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: December 4, 2007
    Assignee: Yokohama Rubber Company
    Inventor: Yutaka Hattori
  • Publication number: 20070219320
    Abstract: A process for producing a rubber composition containing a nonconjugated polyene copolymer (A), a softener (B) and a diene rubber (C), comprising: a step of mixing a copolymer composition (I), said copolymer composition (I) comprising 100 parts by weight of a nonconjugated polyene copolymer (A), said nonconjugated polyene copolymer (A) being a random copolymer containing 96 to 70 mol % of the structural units derived from ?-olefin (A1) and 4 to 30 mol % of the structural units derived from nonconjugated polyene (A2) and having a glass transition temperature (Tg) of ?25 to 20° C., and 1 to 100 parts by weight of the softener (B); the diene rubber (C); and optionally further the softener (B). A tire tread using the rubber composition and a tire having the tire tread.
    Type: Application
    Filed: April 28, 2005
    Publication date: September 20, 2007
    Applicants: Mitsui Chemicals, Inc., Yokohama Rubber Company, Limited, The
    Inventors: Kotaro Ichino, Masao Kunizane, Yuji Ishii, Kunihide Hiraoka, Masaaki Kawasaki, Hidetatsu Murakami, Keiji Okada
  • Patent number: 7049938
    Abstract: An intra-vehicle LAN system combining electric power supply includes a main controller having control signal generation device for generating a control signal used to control each of on-vehicle electric equipments and outputting the control signal to an electric power supply line through which electric power is supplied to the electric equipments and an electric equipment control unit being provided between the electric power supply line and each of the electric equipments to detect the control signal transmitted through the electric power supply line and to control each of the electric equipments. In this system, the generated control signal contains an ID for specifying each of the electric equipments.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: May 23, 2006
    Assignee: The Yokohama Rubber Company, Ltd.
    Inventors: Yutaka Hattori, Yasuo Hatano
  • Patent number: 6589647
    Abstract: In a thermoplastic elastomer having a matrix phase of a thermoplastic resin and a domain phase of rubber particles at least a part of which is crosslinked, use is made of rubber particles at least a part of which is conductive to provide a conductive thermoplastic elastomer composition having a volume resistivity that can be controlled over a wide range of from a conductive region (104 ((&OHgr;·cm) or less) to an insulting region (1013 (&OHgr;·cm) or more).
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: July 8, 2003
    Assignee: The Yokohama Rubber Company, Ltd.
    Inventors: Osamu Ozawa, Kazuhiro Imada
  • Patent number: 6024817
    Abstract: A belt-shaped member cut into a predetermined length is fed from a feeding devices to a tire forming drum and is wound on its cylindrical peripheral surface. Center portions of the opposite ends of the belt-shaped member are pushed to be joined to each other and the side portions of at least one of the opposite ends of the belt-shaped member are held by upper and lower holding pawls. Such holding pawls are swung along an arcuate path so that both side portions of the opposite ends of the belt-shaped member are drawn near each other to abut against each other. The abutting end portions are pushed toward the peripheral surface of the drum by pushing devices for joining them together.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: February 15, 2000
    Assignee: Yokohama Rubber Company, Ltd.
    Inventors: Yoshinori Miyamoto, Hidemasa Sato, Jiro Agawa, Keizo Yamashita, Toshinari Matsumoto
  • Patent number: 5411567
    Abstract: Fermentation products are composed essentially of poultry manure components, which products are derived from reacting poultry manure materials with concentrated sulfuric acid and calcium silicate and subsequently from fermenting the resulting reaction mixture by the use of a selected class of bacteria. The product is suitable for use as an organic fertilizer and as a soil conditioner.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: May 2, 1995
    Assignee: The Yokohama Rubber Company
    Inventors: Toshihiro Ueotani, Yuichi Sugiyama
  • Patent number: 5355925
    Abstract: A pneumatic radial tire to be fitted on a wheel in which a position wherein a disc is joined to a rim is offset from the center of the width of the rim toward the outer surface of said wheel, characterized in that the tire comprises an asymmetric structure in which a belt layer is provided between a tread and a carcass layer, an outer circumferential portion of the belt layer being covered with at least one belt covering layer, the at least one belt covering layer being disposed so that an average position of the center(s) of the width(s) thereof from the equator of the tire is deviated toward the opposite side of the offset side of the disc, a ratio e/w of the deviating distance e to the width w of a ground contacting portion of the tread being set to 0.05-0.13.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: October 18, 1994
    Assignee: The Yokohama Rubber Company, Ltd.
    Inventors: Naoyuki Katsura, Tomohiko Kogure, Zenichiro Shida, Yoshiaki Hashimura, Yusaku Miyazaki
  • Patent number: 5353856
    Abstract: A pneumatic radial tire formed so that, when the tire is inflated from a non-inflated state, in which the inner pressure thereof is 5% of a normal lever, to a normal inner pressure, a central region of the outer surface of the tread in a meridional cross section of the tire which is between two points P.sub.1, P.sub.1 ' spaced from the center P.sub.0 of a tread width to left and right along the outer surface of the tread by a distance L, which is expressed by the formula 0.25TW.ltoreq.L<0.50TW, with respect to a width TW of a ground contacting portion of the bread grows outward in the radial direction of the tire, shoulder regions on both outer sides of the two points P.sub.1, P.sub.1 ' contracting inward in the radial direction of the tire, with a radius of curvature R.sub.2 of a region, which is formed between two intermediate points P.sub.2, P.sub.2 ', which are positioned halfway respectively between the center P.sub.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: October 11, 1994
    Assignee: The Yokohama Rubber Company, Ltd.
    Inventors: Atao Kishi, Kazuyuki Kabe
  • Patent number: 5240054
    Abstract: A pneumatic tire wherein a plurality of pitches different from each other in the length constitute the whole circumference of a tread surface, the total period length of each period is divided into a former half period length and a latter half period length, and (1) in every period, the ratio of either of the two half period lengths to the total period length is 15 to 30%, or (2) in the whole circumference of the tread surface, the average value of the ratio of a smaller half period length to the total period length is 15 to 30%.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: August 31, 1993
    Assignee: The Yokohama Rubber Company, Ltd.
    Inventor: Tomohiko Kogure
  • Patent number: 5153987
    Abstract: By using a composite film comprising an additive layer and an insulating layer containing an epoxy resin and a synthetic rubber as major components, printed wiring boards having a higher circuit density and higher reliability can be produced simply and effectively.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: October 13, 1992
    Assignees: Hitachi Chemical Company, Ltd., Hitachi, Condenser Co., Ltd., Yokohama Rubber Company Limited
    Inventors: Hiroshi Takahashi, Shin Takanezawa, Masao Kanno, Toshiro Okamura, Naoki Fukutomi, Hiroyoshi Yokoyama, Hideo Watanabe, Hajime Yamazaki, Hiroyuki Wakamatsu, Toshinobu Takahashi
  • Patent number: 5091549
    Abstract: A method of synthesizing D-myoinositol-1-phosphate from 1,2-(R.sup.1)-3-R.sup.2 -myoinositol compounds of the formula ##STR1## wherein R.sup.1 is a bridging type protective group bonded to two oxygen atoms at the 1- and 2-position, and R.sup.2 is a protective group coupled to the oxygen atom at the 3-position. D-Myoinositol-1-phosphate is useful as an intermediate for the production of inositol-1,4,5-triphosphate.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: February 25, 1992
    Assignee: The Yokohama Rubber Company, Ltd.
    Inventors: Shoichiro Ozaki, Takahiko Akiyama, Naoto Takechi, Kunio Kageyama, Morihisa Machida