Patents Assigned to Tokai Rubber Industries, Ltd.
  • Publication number: 20140175719
    Abstract: A fluid-filled vibration damping device including a hollow buffer body with an inner space. The hollow buffer body is housed in a housing space of a partition member to come in contact with wall inner surfaces of the housing space on sides of a pressure-receiving chamber and an equilibrium chamber, while stores a movable member in the inner space thereof. Liquid pressure of the pressure-receiving chamber is applied to a first face of the movable member by having a first window portion formed in the buffer body communicated with a first communication hole of the housing space while liquid pressure of the equilibrium chamber is applied to a second face of the movable member by having a second window portion formed in the buffer body communicated with a second communication hole of the housing space.
    Type: Application
    Filed: December 27, 2013
    Publication date: June 26, 2014
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventor: Tomohiro KANAYA
  • Publication number: 20140166833
    Abstract: A resin bracket including a mounting unit and a plurality of attachment units integrally formed using synthetic resin, and a plurality of insert members arranged on the respective attachment units such that each of the attachment units is configured to be attached to a member constituting a vibration transmission system by a fastening member configured to be inserted in an inner hole formed on an inside of the corresponding insert member. The insert members are formed in mutually a same shape. An inner circumference resin layer integrally formed with the attachment unit is adhered to an inner circumference surface on at least one of the insert members. The inner hole of the insert member formed on the inside of the inner circumference resin layer has a different shape from the inner hole of at least one other insert member.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 19, 2014
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventor: Kei OKUMURA
  • Patent number: 8747701
    Abstract: The charging roller has a base layer formed of an electroconductive rubber composition containing (a) a polar rubber having an unsaturated bond or an ether bond, (b) an ion carrier containing one or more phosphonium salts selected from the group consisting of phosphonium salts having the formulae (1) and (2), and (c) a cross-linker, wherein the amount of (b) component ranges from 0.1 to 10 parts by mass per 100 parts by mass of the (a) component. The formula (1) represents [(H9C4)3(CnH2n+1)P]+(CF3SO2)2N—, and the formula (2) represents [(H9C4)3(CnH2n+1)P]+(CF3SO3)—.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 10, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Kadai Takeyama, Takenori Saito, Naoaki Sasakibara, Keiichi Ikegami
  • Patent number: 8747951
    Abstract: A method for manufacturing a hose with a protector layer 2 on the outer periphery of a tubular polyamide resin layer 1 includes steps of: preparing a rubber composition for forming the protector layer by separately preparing a first rubber material containing components (A) to (C) and a second rubber material containing components (a) and (b) but substantially free of a sulfur vulcanization agent and mixing them in a mixer; and forming the protector layer 2 by continuously vulcanizing unvulcanized rubber after continuous extrusion of the rubber composition onto the outer periphery of the previously formed polyamide resin layer 1. (A) Ethylene-propylene rubber (B) Sulfur vulcanization agent (C) Thiuram vulcanization accelerator (mp. 66 to 105° C.) (a) Ethylene-propylene rubber (b) Vulcanization accelerator (mp. 120° C. or higher).
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: June 10, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Naoki Oyaizu, Kazutaka Katayama
  • Patent number: 8745797
    Abstract: The objective of the present invention is to provide a mattress including a plurality of cells provided on a body pressure working surface of a substrate that supports a human body, and a pressure control means that changes a setting of a height of each cell by adjusting a pressure in a fluid chamber formed within the cell. An elastic cushion layer is provided on a body pressure working surface of the cells, and a constricted portion is formed in a middle in the height of the each cell so that the body pressure working surface of the cell is allowed to tilt following deformation of the cushion layer as a result of the cells' precession-deformation at the constricted portion.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 10, 2014
    Assignees: Tokai Rubber Industries, Ltd., Kyushu University, National University Corporation
    Inventors: Akitsugu Misaki, Shin-ichiro Takasugi, Shuji Fukugawa, Mika Wada, Kiyoe Harada, Keiko Miyazaki, Yukiko Tachibana, Yukihide Iwamoto
  • Patent number: 8739836
    Abstract: A refrigerant-transporting hose includes a tubular inner layer 1 in contact with a fluorine refrigerant, an intermediate layer 2 formed on an outer periphery surface thereof, and at least one rubber layer 3 and 5 formed on a further outer periphery thereof, and the inner layer 1 is made of a inner layer material including maleic anhydride-modified polypropylene as a main component and the intermediate layer 2 is made of a intermediate layer material including polyamide resin as a main component.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: June 3, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Naoki Oyaizu, Kazutaka Katayama, Takehiko Taguchi, Hiroyoshi Mori, Eiichi Daikai, Yukinori Wakazono
  • Patent number: 8734669
    Abstract: A magnetic induction foam molding apparatus comprising: a pair of electromagnet parts, each of which has a core part composed of a ferromagnet and a coil part placed on the outer circumference surface of the core part, and that are placed so as to face each other and depart from each other with a predetermined distance in the axis direction of the core part; a foaming mold interposed between the pair of electromagnet parts, inside which a cavity is defined; and a yoke part connecting back surfaces of the respective core parts of the pair of the electromagnet pats so as to form a magnetic path between a pair of the back surfaces. In the cavity of the foaming mold, a uniform magnetic field is formed.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: May 27, 2014
    Assignees: Tokai Rubber Industries, Ltd., National University Corporation Nagoya Institute of Technology
    Inventors: Koji Tomiyama, Yasushi Ido
  • Publication number: 20140138667
    Abstract: An organic semiconductor device includes a laminate and films sealing the laminate in which excellent connection precision is achieved between connection lands and electrodes by suppression of slipping between the laminate and the films upon sealing of the laminate under evacuation, and the laminate is highly sealed. The organic semiconductor device has, between a laminate and a first film substrate, an antislip members that suppress slipping between the laminate and the first film substrate upon sealing of the laminate. An open hole and an electrode contained in the laminate are kept aligned by suppressing of the slipping. The electrode contained in the laminate is connected outside the device through the open hole by a conductive material.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Shingo HIBINO, Ayako HIMURO, Yuzo TAKAO
  • Publication number: 20140130264
    Abstract: The objective of the present invention is to provide: a cushion cell with a new structure which is designed to disperse stresses when the cushion cell is in an inflated state such that excellent durability is achieved and in which a large support area for the human body can be obtained with excellent space efficiency relative to a square shaped space for disposal in an inflated state; and a cushion body with a new structure using the same. The cushion cell is formed with a fluid chamber inside and the height of the cushion cell can be changed by adjusting the pressure in the fluid chamber. The planer shape of the cushion cell in a deflated state is a square shape, and each side part has a curved shape protruding outwards.
    Type: Application
    Filed: January 16, 2014
    Publication date: May 15, 2014
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Akitsugu MISAKI, Takahiro KODA
  • Patent number: 8720952
    Abstract: A connector includes a female member, and a checking member. The female member has a housing being provided with paired windows. The checking member is assembled outward with and retained onto the housing from the axially perpendicular direction, and has a letter “C”-shaped portion and paired locker protrusions. The locker protrusions have a first locker, a leading-end contact, and an inclined second locker, respectively. The first lockers inhibit an assembly-line worker or robot from pulling the checking member from out of the housing. The leading-end contacts expand the letter “C”-shaped portion diametrically when a male member is inserted into the female member completely. The inclined second lockers inhibit elastic force, which arises in the letter “C”-shaped portion, from removing the checking member from the housing. The housing further has a fitting dent. The checking member's letter “C”-shaped portion has a fitting protrusion that fits into the fitting dent.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: May 13, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Eiji Matsunaga
  • Patent number: 8718518
    Abstract: A development roll for electrophotographic equipment includes a shaft body, a rubber elastic layer formed by molding on an outer circumference of the shaft body and having many convex portions formed by transfer molding on the outer circumferential surface thereof, and a coating layer disposed on an outer circumference of the rubber elastic layer. The coating layer is composed of a cured body of a coating material containing (A) a thermoplastic urethane having a number-average molecular weight in the range of 50,000 to 200,000, (B) a polyol having a number-average molecular weight in the range of 500 to 4,000, and (C) a curing agent. The mass percentages a, b, and c of the components (A), (B), and (C) satisfy the following expressions: a+b+c=100, 40?a?75, 5?b?20, and 20?c.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 6, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Shuichi Egawa, Masanari Umeda, Yousuke Hayashi
  • Patent number: 8714530
    Abstract: A fluid-filled vibration damping device including: a partition member having first and second partition plates overlapping, and a holding area formed between overlapping surfaces of center parts of the two partition plates; and a movable membrane held and arranged in the holding area. A claw-shaped part and a perforation window are formed at respective corresponding positions of outer circumference parts of the two partition plates, and a fixing mechanism is constituted with the claw-shaped part latched in a circumference edge part of the perforation window. A widening area is provided between an outer circumference surface of the movable membrane and an inner circumference surface of the holding area by partially making a large distance therebetween. At least one of the two partition plates has a first air vent hole piercing a part constituting a wall part of the widening area.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: May 6, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Tomohiro Kanaya
  • Patent number: 8706351
    Abstract: Provided is an active noise cancellation apparatus capable of reliably reducing road noise by a technique other than mounting a vibration generator on a floor panel itself or another plate-like interior part itself, while reducing costs and size of the apparatus. A reference signal detector is mounted on a knuckle and the vibration generator is mounted on a wheel housing or a suspension member. An error signal detector detects vibration of the wheel housing or vibration of the suspension member as an error signal, or detects sound in a vehicle interior as an error signal. A controller controls the vibration generator based on the reference signal and the error signal so as to reduce the error signal.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: April 22, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Koichi Hasegawa, Akira Katagiri, Hideki Oshima
  • Publication number: 20140101862
    Abstract: The object of the present invention is to provide a mattress of a novel structure that can quickly perform dispersion of a body pressure acting part of a user, and can reduce discomfort felt by the user when doing a cell internal pressure switching operation, as well as a control method thereof. The present invention is provided with: a grouping step for, on the basis of a body pressure applied to each of a plurality of cells, dividing the plurality of cells into groups; a target internal pressure setting step for setting a target internal pressure of the cells for each group divided at the grouping step; and an internal pressure adjusting step for interconnecting the cells in each group and adjusting the internal pressure of the cells to the internal pressure set in the target internal pressure setting step.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventor: Akitsugu MISAKI
  • Publication number: 20140090884
    Abstract: An elastic conductive material includes a matrix and a conductor dispersed in the matrix. The matrix is formed by crosslinking a first polymer that is one or more selected from polymers of General Formulae (1) to (4) below and has a function of dispersing the conductor, and a second polymer crosslinkable with the first polymer. [In Formulae (1) to (4), X is a substituent crosslinkable with the second polymer; Y is a functional group having an affinity for the conductor; constitutional units A, B, and C each are one kind selected from acrylic acid, methacrylic acid, salts of acrylic acid and methacrylic acid, esters, polybutadiene, polyisoprene, urethane prepolymer, polyether, polyetheramine, polyamine, polyol, and polythiol; and l, m, and n each are an integer equal to or greater than one.
    Type: Application
    Filed: December 3, 2013
    Publication date: April 3, 2014
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Jun KOBAYASHI, Yutaro TAGUCHI, Hitoshi YOSHIKAWA
  • Patent number: 8686078
    Abstract: Provided is a rubber composition, which is excellent in fuel permeation resistance, and is capable of achieving improvements in low-temperature embrittlement property and solvent crack property. The rubber composition includes: a fluororubber having a fluorine concentration content of 70 to 71 wt % as a main component; a crosslink-type agent; and the following components (A) and (B), in which: the total content [(A)+(B)] of the above-mentioned components (A) and (B) falls within the range of 17 to 25 parts by weight with respect to 100 parts by weight of the above-mentioned fluororubber; and a weight ratio (A)/(B) of the content of the above-mentioned component (A) to the content of the above-mentioned component (B) falls within the range of 2.0/1 to 3.0/1: (A) barium sulfate; and (B) a neutral silica.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: April 1, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Masashi Noda, Eiji Matsunaga
  • Patent number: 8685515
    Abstract: A refrigerant-transporting hose having excellent low-refrigerant permeability, acid resistance, and flexibility includes a tubular resin layer for contacting with a refrigerant, in which the resin layer is formed of a resin composition containing (A) an aliphatic polyamide; (B) a semi-aromatic polyamide; and (C) an elastomer, in which a weight mixing ratio “component (A)/component (B)” between the component (A) and the component (B) is 95/5 to 60/40, and the component (A) and the component (B) are in a compatible state.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: April 1, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Naoki Oyaizu, Kazutaka Katayama
  • Patent number: 8679702
    Abstract: A fuel cell module includes: an electrode member having a membrane electrode assembly, which is formed from an electrolyte membrane and a pair of electrode catalyst layers that is disposed on both sides of the electrolyte membrane in the thickness direction, and having a pair of porous layers disposed on both sides of the membrane electrode assembly in the thickness direction; a separator disposed layered on the electrode member so as to contact at least one of the porous layers; and an adhesive rubber member sealing a peripheral edge portion of the electrode member, wherein the electrode member and the separator are integrated by the adhesive rubber member, and a tensile product of the adhesive rubber member is 1,500 MPa·% or more.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: March 25, 2014
    Assignees: Tokai Rubber Industries, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideaki Tanahashi, Yutaka Ishioka, Shinichi Haga, Hideya Kadono, Kenji Sato, Fumishige Shizuku
  • Patent number: 8674002
    Abstract: A vibration-proof rubber composition excellent in both characteristics of durability and compression set characteristic is provided. A vibration-proof rubber composition includes components (A) to (C) below, wherein an amount of reacted silane coupling agent in the component (B) is 6.5% by weight or more, and an amount of unreacted silane coupling agent is in a range of 0.5 to 2.5% by weight: (A) diene rubber; (B) pre-treated silica prepared by surface-treating, with a silane coupling agent, silica having a BET specific surface area in a range of 180 to 230 m2/g; and (C) sulfur.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: March 18, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Yusuke Nishikawa, Norihito Kimura
  • Patent number: 8673417
    Abstract: A hose for gasohol fuel including an inner layer containing at least one selected from (A) to (D) below and an alcohol-cut off layer including a rubber composition containing a butyl rubber, a hydrated hydrotalcite compound, and a 1,8-diazabicyclo(5,4,0)undecene-7 salt (DBU salt): (A) a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer or a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride-perfluoroalkyl vinyl ether tetrapolymer; (B) a polyamide resin; (C) a fluororubber; and (D) NBR or NBR-PVC.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: March 18, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Kazushige Sakazaki, Hiroyoshi Mori, Kazutaka Katayama, Shinji Iio, Hidehito Ikeda, Hideji Fukaya