Patents Assigned to Tokai Rubber Industries, Ltd.
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Publication number: 20120218029Abstract: A touch switch including: a conductive member for which voltage is applied from a plurality of locations for detecting presence or absence of a touch and a touch position on the conductive member of a conductor to be detected based on an electrical conduction status of the conductive member; and a detection-level changing mechanism for changing a detection level of the electrical conduction status of the conductive member due to the touch of the conductor on the conductive member. The presence or absence of the touch and the touch position on the conductive member of the conductor is detected if the detection level meets a predetermined condition.Type: ApplicationFiled: February 23, 2012Publication date: August 30, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Norihiko FURUTA, Motoyuki FURUTA, Atsushi MURAMATSU, Tomonori HAYAKAWA
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Publication number: 20120199238Abstract: A fuel hose according to an aspect of the present disclosure includes: a tubular inner rubber layer; a resin layer formed on an outer circumferential surface of the inner rubber layer; and an outer rubber layer formed on an outer circumferential surface of the resin layer, wherein the inner rubber layer includes a rubber material containing the following Components (A), (B) and (C), the outer rubber layer includes a rubber material containing the following Components (A?), (B) and (C?), and the resin layer includes a resin material containing the following Component (X) as a main component: (A) acrylonitrile-butadiene rubber, (A?) blend rubber containing acrylonitrile-butadiene rubber and acrylic rubber, (B) a sulfur vulcanizing agent, (C) an amine catalyst to form bonding points, (C?) an amine catalyst to form bonding points, which contains 1,5-diazabicyclo(4.3.0)non-5-ene salt (DBN salt), and (X) tetrafluoroethylene-perfluoro(alkylvinylether)-chlorotrifluoroethylene copolymer.Type: ApplicationFiled: April 24, 2012Publication date: August 9, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Daigo Tamura, Ayumu Ikemoto, Masashi Noda, Yoshiki Kodaka
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Publication number: 20120200021Abstract: An electromagnetic actuator wherein an annular supporting member secured to a stator and an oscillator member secured to a movable member are disposed in opposition in an axis-perpendicular direction and are elastically linked by a supporting rubber elastic body disposed therebetween. One axial face of the supporting rubber elastic body is furnished with an inside peripheral recessed portion and an outside peripheral protruding portion while another axial face is furnished with an inside peripheral protruding portion and an outside peripheral recessed portion so as to establish in the supporting rubber elastic body an elastic center axis: l that curves along a sinuous trajectory of an interconnected peak segment and valley segment situated between opposing faces of the annular supporting member and the oscillator member in the axis-perpendicular direction.Type: ApplicationFiled: March 20, 2012Publication date: August 9, 2012Applicants: HONDA MOTOR CO., LTD., TOKAI RUBBER INDUSTRIES, LTD.Inventors: Tomohiro KANAYA, Takehiro OKANAKA, Koji IMUTA
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Publication number: 20120199237Abstract: To provide a hose for transporting a refrigerant, a butyl rubber layer 7 is formed on outer periphery of a tubular resin layer 1, which is in contact with a refrigerant, and an ethylene-propylene rubber layer 8 is further formed on the outer periphery thereof. The resin layer 1 is composed of a material that contains, as a main component, a mixture of a polyamide resin and a modified polyolefin elastomer, a skin layer 6 is formed only on an inner peripheral surface of the resin layer, and tensile modulus (A) of the skin layer 6, tensile modulus (B) of the resin layer 1 excluding the skin layer 6, tensile modulus (C) of the butyl rubber layer 7, and tensile modulus (D) of the ethylene-propylene rubber layer 8 satisfy the relationship that is defined by the following formula (?): (A)>(B)>(C)>(D)??(?).Type: ApplicationFiled: February 29, 2012Publication date: August 9, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Naoki Oyaizu, Kazutaka Katayama, Takehiko Taguchi
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Patent number: 8235879Abstract: A charging roll includes a shaft and an ionically conductive elastic layer formed around the shaft. The ionically conductive elastic layer is formed of a rubber composition free of any electron-conductive agent and containing 0.7 to 1.0 parts by weight of a peroxide cross-linking agent per 100 parts by weight of an ion-conductive rubber. The ion-conductive rubber is formed of at least one of an epichlorohydrin rubber and a nitrile rubber, and a percentage of a rubber component in the ionically conductive elastic layer measured by thermogravimetric analysis is 90% or more by weight.Type: GrantFiled: June 18, 2008Date of Patent: August 7, 2012Assignee: Tokai Rubber Industries, Ltd.Inventors: Kenichi Tsuchiya, Naoaki Sasakibara, Fumio Misumi, Satoshi Suzuki, Kadai Takeyama
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Patent number: 8231116Abstract: A fluid filled type vibration damping device wherein an outer tubular mounting member is externally fitted onto the collar sleeve at an externally fitted section formed by a tapered tube portion of the outer tubular mounting member, by means of a diameter reduction process. A mating projection projecting diametrically inward is formed on an inside peripheral face of the outer tubular mounting member, while a seal rubber layer having a thickness greater than a projecting height of the mating projection is formed covering the inside peripheral face of the outer tubular mounting member with the mating projection covered by the seal rubber layer. A location and projecting height of the mating projection are arranged so as to prevent an entry of another outer tubular mounting member into a large-diameter opening of the tapered tube portion during pre-treatment.Type: GrantFiled: March 4, 2008Date of Patent: July 31, 2012Assignee: Tokai Rubber Industries, Ltd.Inventor: Naoki Nishi
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Patent number: 8227061Abstract: A heat resistant air hose which is excellent in oil-bleeding resistance and causes reduced vibration noise is provided. The heat resistant air hose has an inner layer formed of an inner layer material comprising silicone rubber as a major component thereof; and an outer layer provided on an outer periphery of the inner layer and formed of an outer layer material comprising acrylic rubber as a major component thereof, and the acrylic rubber contains not less than 50 wt % of ethyl acrylate and has a dissipation factor (tan ?) of not less than 0.09 at 150 ° C. and a storage elastic modulus (E?) of not less than 7.0 MPa.Type: GrantFiled: March 22, 2007Date of Patent: July 24, 2012Assignee: Tokai Rubber Industries, Ltd.Inventors: Masashi Noda, Kazutaka Katayama, Hiroyoshi Mori, Yoshiki Kodaka
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Publication number: 20120168246Abstract: A soundproofing cover that has a sufficiently high soundproofing performance and that allows another member to be reliably attached to the soundproofing cover with a screw-fastening structure is provided. The soundproofing cover includes a cover body, a sound absorbing layer made of a urethane foam and formed integrally with the back surface of the cover body, and a nut member having a threaded hole that opens at both sides of the nut member in an axial direction. The nut member is embedded in the cover body in a manner such that an opening of the threaded hole in the nut member at a first end in the axial direction opens at a front surface of the cover body and an opening of the threaded hole at a second end in the axial direction is blocked by a blocking portion that is formed integrally with the cover body.Type: ApplicationFiled: March 15, 2012Publication date: July 5, 2012Applicants: TOKAI CHEMICAL INDUSTRIES, LTD., TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hiroyuki Kondo, Yukio Hatanaka
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Patent number: 8211348Abstract: A method of manufacturing a cylindrical member having anti-slip projections formed on axial end faces, the method comprising the steps of: employing a roller die, which is provided with a circumferential die groove of annular form extending through a medial section in a generatrix direction of a die face defined by an integral tapered outside peripheral face, and with a plurality of sloping die grooves extending in a tapered slope direction of the die face situated to both large-diameter and small-diameter sides of the circumferential die groove; providing plastic working to the axial end face with the small-diameter side of the roller die facing towards an inner peripheral side of the cylindrical member and with the large-diameter side facing towards an outer peripheral side, by pushing the die face against the axial end face while rotating circumferentially; and forming simultaneously an annular water barrier projection and the anti-slip projections.Type: GrantFiled: June 23, 2010Date of Patent: July 3, 2012Assignees: Tokai Rubber Industries, Ltd., Sekido Kiko Mfg. Co., Ltd.Inventors: Norimasa Kuki, Yoshikane Akiyama, Mitiharu Hikosaka, Kazuhiko Kato, Kazumasa Sekido, Daisuke Ueda, Harumi Niwa, Hiroshi Itazu, Yuji Mizuno
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Patent number: 8210213Abstract: A multilayer tube comprises at least the following three layers: an inner layer contactable with a fuel component, a barrier layer preventing the fuel component permeating, and an outermost layer. In the multilayer tube, the inner layer comprises a poly(butylene terephthalate) resin composition containing at least (A) a poly(butylene terephthalate) resin, the barrier layer comprises a polyester resin composition, and the outermost layer comprises a poly(butylene terephthalate) resin composition containing (A) a poly(butylene terephthalate) resin, (B) an elastomer component, (C) an aromatic polycarbodiimide compound, and (D) an antioxidant.Type: GrantFiled: March 23, 2009Date of Patent: July 3, 2012Assignees: Wintech Polymer Ltd., Tokai Rubber Industries, Ltd.Inventors: Yasumitsu Miyamoto, Koji Mizutani, Kazutaka Katayama, Kazuhito Kasahara
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Publication number: 20120161435Abstract: A quick connector capable of surely confirming that a pipe body is engaged by a retainer when an elastically-deformable claw of the retainer and an elastically-deformable claw of a checker are adjacently arranged in an axial direction. Checker-axis direction elastically-deformable claws have distal-end sides formed flexibly deformable in the axial direction, maintain a state of being engaged by a second engagement portion of a retainer body by having deflective deformation regulated by a retainer diameter-expanding elastically-deformable claw in a state in which the retainer diameter-expanding elastically-deformable claw is expanded diametrically, and regulate sliding from a first position with respect to the retainer body toward a set radial direction by being engaged by the second engagement portion of the retainer body.Type: ApplicationFiled: December 30, 2011Publication date: June 28, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hiroshi YAMADA, Kazushige SAKAZAKI, Takahiro SHIBATA, Ryo IKEGAMI, Hisashi TERAYAMA
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Publication number: 20120146464Abstract: The present invention provides a flexible conductive crosslinked body excellent in durability having a small influence of a reaction residue after the crosslinking on an object to which the conductive crosslinked body adheres, and a production process of the flexible conductive crosslinked body. The conductive crosslinked body is synthesized from a conductive composition containing a rubber polymer, an organic metal compound, and a conducting agent and has a crosslinked structure. The production process of the conductive crosslinked body includes: a mixed solution preparing step for preparing a mixed solution in which the rubber polymer, the conducting agent, and the organic metal compound are mixed in a solvent capable of dissolving the rubber polymer and capable of chelating the organic metal compound; and a crosslinking step for removing the solvent from the mixed solution to allow a crosslinking reaction to proceed.Type: ApplicationFiled: February 22, 2011Publication date: June 14, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Jun Kobayashi, Hitoshi Yoshikawa, Wataru Takahashi
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Publication number: 20120144935Abstract: A purpose is to provide a sensor assembly and a sensor module having a flexible sensor element that uses polymer material and having a component such as the sensor element and the like that hardly deteriorates and is superior in durability. A sensor assembly includes a sensor element and an exterior packaging bag enclosing the sensor element. The sensor element includes a sensor thin film made of resin or elastomer, and at least one pair of electrodes connected to the sensor thin film. The exterior packaging bag is made from laminate films having a metal foil and two resin layers arranged sandwiching the metal foil.Type: ApplicationFiled: February 21, 2012Publication date: June 14, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Masaru MURAYAMA, Yuuki SAITOU, Tomonori HAYAKAWA, Kazunobu HASHIMOTO
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Patent number: 8191876Abstract: A fluid-filled type vibration damping device wherein a second mounting member is secured to a vehicle body; an opening of the second mounting member is closed off to define a pressure-receiving chamber a flexible film is arranged covering an outside of a main rubber elastic body to define an equilibrium chamber; a low-frequency orifice passage and a high-frequency orifice passage connect the pressure-receiving chamber and the equilibrium chamber a first moveable member is disposed on a fluid channel through the high-frequency orifice passage; the first moveable member being supported by a first support member that is linked to the second mounting member via the main rubber elastic body; and a fluid channel through the low-frequency orifice passage is situated away from the placement location of the first moveable member.Type: GrantFiled: July 29, 2009Date of Patent: June 5, 2012Assignee: Tokai Rubber Industries, Ltd.Inventors: Tomohiro Kanaya, Masaaki Hamada, Masahiro Ohnishi
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Publication number: 20120118664Abstract: A purpose is to provide a tubular body soundproof cover and a covered tubular body, for which elastic deformation of the tubular body is unlikely to be inhibited. The tubular body soundproof cover includes a sound absorbing layer arranged on outside in an axially perpendicular direction of a tubular body having tubular body side curved sections; a skin layer arranged on outside in the axially perpendicular direction of the sound absorbing layer; and cover side curved sections arranged on outside in the axially perpendicular direction of the tubular body side curved sections, including at least a portion of the sound absorbing layer and at least a portion of the skin layer. The cover side curved sections have non-adherent sections in which the sound absorbing layer and the skin layer are not bonded over the entire circumferential length.Type: ApplicationFiled: January 26, 2012Publication date: May 17, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Kazuki ERA, Hiroyuki OCHIAI
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Publication number: 20120119626Abstract: To provide a conductive film that is flexible, extendable and contractible, and for which the electrical resistance hardly increases even when the conductive film is extended. The conductive film contains an elastomer and metallic filler particles, and satisfies a condition (A) [an average value of reference numbers is 0.8 (1/?m) or more, or the metallic filler particles include flake-like metallic filler particles having a thickness of 1 ?m or less and an aspect ratio of 26 or more and the average value of the reference numbers is 0.4 (1/?m) or more] and a condition (B) [a number of unit areas for which an area percentage of the elastomer is 60% or more is 20 or more], the condition (A) being a conductivity indicator and the condition (B) being a flexibility indicator.Type: ApplicationFiled: January 26, 2012Publication date: May 17, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Wataru TAKAHASHI, Hitoshi YOSHIKAWA, Jun KOBAYASHI
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Patent number: 8177044Abstract: An automotive impact absorbing member integrally formed of synthetic resin material having lengthwise shape that extends with a constant hollow cross section. The impact absorbing member includes: plate-shaped rib portions each extending in a direction perpendicular to an impact load input direction; and load transmitting portions connecting with rib portions at either widthwise end thereof for transmitting a widthwise direction component force of the impact load to the rib portions. At least one of the plate-shaped rib portions has a thin portion of minimum thickness dimension situated in a widthwise center section thereof, and has a pair of gradual change portions situated to either side of the thin portion in a width direction and which increase gradually in thickness dimension outwardly in the width direction.Type: GrantFiled: November 26, 2007Date of Patent: May 15, 2012Assignee: Tokai Rubber Industries, Ltd.Inventors: Masaru Murayama, Junichiro Suzuki
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Patent number: 8172209Abstract: A vibration damping device including: a rubber elastic body connecting first and second mounting members; a partition member supported on the second mounting member; a pressure-receiving chamber and an equilibrium chamber connected by a first orifice passage; an oscillating plate defining the pressure-receiving chamber; and an electromagnetic actuator for actuating the oscillating plate. The oscillating plate is constituted by a cylinder shaped hole and a piston shaped plate accommodated within the cylinder shaped hole with a gap provided therebetween. An output member of the electromagnetic actuator is linked to the piston shaped plate. A plate spring extending in an axis-perpendicular direction is disposed to an opposite side from the electromagnetic actuator with the piston shaped plate therebetween, with the oscillating plate linked to and supported in an axial direction with respect to the partition member by the plate spring.Type: GrantFiled: September 18, 2008Date of Patent: May 8, 2012Assignee: Tokai Rubber Industries, Ltd.Inventor: Mutsumi Muraoka
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Patent number: 8167339Abstract: There is provided a resin tube-equipped quick connector capable of connecting a fuel-transporting resin tube to a mating pipe without hindrance even if the resin tube has a small diameter. The quick connector is constructed such that it includes a connector body having a press-fitting portion, and a retainer. On the other hand, a press-fit undergoing portion of the resin tube into which the press-fitting portion is to be press-fitted is beforehand expanded in tube diameter prior to the press-fitting, and the press-fitting portion is press-fitted into the expanded press-fit undergoing portion in a withdrawal-preventing condition to provide the quick connector equipped with the resin tube.Type: GrantFiled: December 20, 2004Date of Patent: May 1, 2012Assignees: Tokai Rubber Industries, Ltd., Honda Motor Co., Ltd.Inventors: Katsuichi Yagisawa, Yasuaki Nagai, Kazuhiro Kato, Hirokazu Kitamura
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Publication number: 20120098178Abstract: A member mount has an inner tubular member, an outer tubular member, and a rubber elastic body connecting the tubular members. An inner peripheral resin layer having an inner hole as a positional hole is layered on an internal peripheral surface of the inner tubular member and an outer peripheral resin layer is layered on an outer peripheral surface thereof. The resin layers are connected to each other in resin connection portions in connection holes passing through the inner tubular member in four positions in the circumferential direction at equal distances.Type: ApplicationFiled: October 24, 2011Publication date: April 26, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventor: Yuki YAHATA