Patents by Inventor Ayumu Ikemoto
Ayumu Ikemoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6935378Abstract: A vibration absorbing hose including a corrugated portion has multi-layered construction of tubular inner rubber layer, pressure resistant reinforcement layer circumscribing an outer side of the inner rubber layer and outer rubber layer as outermost cover layer. The pressure resistant reinforcement layer is formed, for example, by providing reinforcing yarns, so as to have corrugations along the corrugated portion of the inner rubber layer. The inner rubber layer contains scaly filler in an amount of 50 phr to 200 phr so as to be oriented in a stretching direction of the inner rubber layer. The scaly filler has an aspect ratio of 2 to 90.Type: GrantFiled: June 22, 2004Date of Patent: August 30, 2005Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Tetsuya Arima
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Publication number: 20050067036Abstract: A rubber hose material for providing a rubber hose excellent in mechanical strength and with an intrinsic property (elongation) of rubber retained. The rubber hose material is formed by blending an ethylene-olefin resin (component (B)) as an organic filler into an ethylene-propylene rubber (component (A)).Type: ApplicationFiled: September 30, 2004Publication date: March 31, 2005Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Ryo Hirai, Ayumu Ikemoto, Hidehito Ikeda, Yoshio Okado
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Publication number: 20050026023Abstract: A hose material for a fuel cell which is superior in both of low extraction property and electrical isolation, and which also has excellent mechanical properties, and also a hose manufactured using the hose material. The hose material comprises: (A) an ethylene-propylene copolymer; (B) hydrophobic silica; (C) a peroxide crosslinking agent; and (D) carbon black.Type: ApplicationFiled: July 27, 2004Publication date: February 3, 2005Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Ryo Hirai, Ayumu Ikemoto
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Patent number: 6838141Abstract: A hose of a laminated structure which comprises a rubber layer composed of a rubber composition, and a laminate including a metal foil and a resin, the rubber composition including: (A) a rubber including at least one of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer; (B) a peroxide vulcanizing agent; (C) a resorcinol compound; and (D) a melamine resin. The hose is light in weight, less costly, and has excellent gas barrier properties.Type: GrantFiled: August 19, 2002Date of Patent: January 4, 2005Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Motoshige Hibino, Hidehito Ikeda, Kazutaka Katayama
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Publication number: 20040256016Abstract: A vibration absorbing hose has a corrugated portion extending substantially entire part of the hose and end portions of straight cylindrical shape. The vibration absorbing hose has multi-layered construction of tubular inner rubber layer, pressure resistant reinforcement layer circumscribing an outer side of the inner rubber layer and outer rubber layer as outermost cover layer. The pressure resistant reinforcement layer is formed, for example, by braiding reinforcing yarns, so as to have corrugations along the corrugated portion of the inner rubber layer.Type: ApplicationFiled: June 7, 2004Publication date: December 23, 2004Inventors: Tetsuya Arima, Norihiko Furuta, Ayumu Ikemoto
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Publication number: 20040256017Abstract: A vibration absorbing hose including a corrugated portion has multi-layered construction of tubular inner rubber layer, pressure resistant reinforcement layer formed on an outer side of the inner rubber layer by providing reinforcing yarns. A radial depth B of the pressure resistant reinforcement layer at a position of each of corrugation valleys of the rubber layer has such relationship with respect to a corrugation valley depth A of the rubber layer as 0< or =B< or =0.7×A, and an opening angle &thgr; of each of the corrugation valleys of the rubber layer satisfies &thgr;< or =100°.Type: ApplicationFiled: June 22, 2004Publication date: December 23, 2004Inventors: Tetsuya Arima, Norihiko Furuta, Ayumu Ikemoto
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Publication number: 20040256018Abstract: A vibration absorbing hose including a corrugated portion has multi-layered construction of tubular inner rubber layer, pressure resistant reinforcement layer circumscribing an outer side of the inner rubber layer and outer rubber layer as outermost cover layer. The pressure resistant reinforcement layer is formed, for example, by providing reinforcing yarns, so as to have corrugations along the corrugated portion of the inner rubber layer. The inner rubber layer contains scaly filler in an amount of 50 phr to 200 phr so as to be oriented in a stretching direction of the inner rubber layer. The scaly filler has an aspect ratio of 2 to 90.Type: ApplicationFiled: June 22, 2004Publication date: December 23, 2004Inventors: Ayumu Ikemoto, Tetsuya Arima
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Publication number: 20040185199Abstract: A hose material for a fuel cell system which is superior in both the properties of low extraction and electrical isolation, and also has excellent mechanical properties. The hose material comprises an ethylene-propylene copolymer and carbon black having a toluene discoloration of 30% to 50%.Type: ApplicationFiled: March 17, 2004Publication date: September 23, 2004Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Ryo Hirai, Ayumu Ikemoto
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Publication number: 20040146676Abstract: The present invention is a flexible hose having a metal bellows tube 1 comprising a rubber layer 2 on the outer circumference of the metal bellows tube 1; and an exterior layer formed on the outer circumference of the rubber layer 2; wherein the metal bellows tube 1 has a corrugated bellows structure with a plurality of spaced apart rings 5 having peaks 6 and a plurality of channels 7 disposed between the rings which vary in width in a radial direction with the channels forming relatively wide valleys below the peaks. The rubber layer 2 is of a composition including at least a rubber of an acryl group and/or a rubber of an ethylene-propylene-diene group and with the rubber layer 2 being flowable at low temperature such that each channel in the metal bellows tube 1 is filled with rubber throughout each valley.Type: ApplicationFiled: November 21, 2003Publication date: July 29, 2004Inventor: Ayumu Ikemoto
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Patent number: 6745796Abstract: A hydrogen fuel transporting hose for a fuel cell powered vehicle having a laminar structure includes at least one inner rubber layer, at least one reinforcing layer, and at least one outer rubber layer, which layers are laminated integrally with one another in the order of description in a radially outward direction of the hose. Each of the inner and outer rubber layers are obtained by vulcanizing a rubber composition including a rubber material selected from the group consisting of a halogenated butyl rubber material, and a blend of a halogenated butyl rubber material and a butyl rubber material. The vulcanized rubber includes a filler having a layered crystal structure and is vulcanized with one of a peroxide vulcanizing agent and a resin vulcanizing agent.Type: GrantFiled: February 28, 2003Date of Patent: June 8, 2004Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Ryo Hirai
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Patent number: 6737480Abstract: A low-contaminative hose which permits a fluid to be passed through with minimized fluid contamination, and a rubber composition used to produce such a hose. The low-contaminative hose is formed from the rubber composition that includes, as essential components, at least one rubber selected from an ethylene-propylene-diene terpolymer, an ethylene-propylene copolymer and a silicone rubber, a peroxide vulcanizing agent, and a filler having a laminar crystal structure.Type: GrantFiled: September 4, 2002Date of Patent: May 18, 2004Assignee: Tokai Rubber Industries, Ltd.Inventors: Hidehito Ikeda, Ayumu Ikemoto, Yoshio Okado
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Publication number: 20040013836Abstract: A hose of impermeability has a wall corrugated along at least a part of its length, and formed by an inner thin resin layer, a laminated layer including a metal film, or a layer formed by a metal film, and an outer thin resin layer. It has a very high fluid impermeability owing to its wall layer including or formed by a metal film, and is also very flexible, capable of absorbing vibration, light in weight and strong. A tubular inner thin resin layer is formed by extrusion as the innermost layer of a multi-layered hose wall, and a laminated tape including a metal film, or simply a metal film is spirally wound or longitudinally lapped about the inner resin layer.Type: ApplicationFiled: July 15, 2003Publication date: January 22, 2004Applicant: Tokai Rubber Industries, Ltd.Inventors: Motoshige Hibino, Kazutaka Katayama, Ayumu Ikemoto, Hidehito Ikeda, Hiroaki Ito
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Publication number: 20040009317Abstract: A hose having strong adhesion between a reinforcing fiber layer and a rubber layer without the use of an adhesive and which has an excellent sealing property.Type: ApplicationFiled: July 9, 2003Publication date: January 15, 2004Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventor: Ayumu Ikemoto
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Publication number: 20030186010Abstract: A rubber composition which is low cost and excellent in low ion extraction, electrical resistance and heat resistance.Type: ApplicationFiled: March 25, 2003Publication date: October 2, 2003Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hidehito Ikeda, Yoshio Okado, Ayumu Ikemoto, Ryo Hirai
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Publication number: 20030178081Abstract: A hydrogen fuel transporting hose for a fuel cell powered vehicle having a laminar structure including at least one inner rubber layer, at least one reinforcing layer, and at least one outer rubber layer, which layers are laminated integrally with one another in the order of description in a radially outward direction of the hose, wherein the improvement comprises: each of the at least one inner rubber layer and the at least one outer rubber layer being provided by a vulcanized rubber obtained by vulcanizing a rubber composition including: (A) a rubber material selected from the group consisting of (a1) a halogenated butyl rubber material, (a2) a blend of a halogenated butyl rubber material and a butyl rubber material, and (a3) an ethylene-propylene rubber material, and (B) a filler whose crystal structure is a layer structure, the rubber composition being vulcanized with one of a peroxide vulcanizing agent and a resin vulcanizing agent where the rubber composition includes, as the rubber material, one of (a1Type: ApplicationFiled: February 28, 2003Publication date: September 25, 2003Applicant: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Ryo Hirai
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Patent number: 6619329Abstract: A hose comprising a laminate including a rubber layer comprising a rubber composition containing as essential components (A) a rubber made of at least one material selected from the group consisting of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer, (B) a vulcanizing agent containing a peroxide, (C) a resorcinol compound, and (D) a melamine resin; and a layer made of at least one material selected from the group consisting of a polyamide resin, an ethylene-vinyl alcohol copolymer, and a metal. In such hose, the rubber layer and the non-rubber layer made of the polyamide resin, the ethylene-vinyl alcohol copolymer, or of the metal adhere well to each other, without applying an adhesive to an interface therebetween.Type: GrantFiled: October 2, 2001Date of Patent: September 16, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Hidehito Ikeda, Kazutaka Katayama, Motoshige Hibino, Yoshio Okado
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Patent number: 6593432Abstract: A sulfur vulcanizing system rubber composition comprises EPDM, zinc as a vulcanization accelerator activator, at least one thiazole type vulcanization accelerator serving to control the dissolution of zinc from the composition, and at least one ultra-accelerator of the thiuram or dithiocarbamate type, these accelerators being preferably combined under specified quantitative limitations. The hose using this rubber composition is particularly suitable for use in a cooling system for an automobile engine, since the dissolution of zinc into a coolant is prevented, thereby preventing the formation of any zinc compound causing the blocking of the hose, or the leakage of the coolant through the seal between the hose and any pipe connected therewith.Type: GrantFiled: July 27, 2000Date of Patent: July 15, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Eiichi Daikai, Koji Senda
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Publication number: 20030124284Abstract: A hose of a laminated structure which comprises a rubber layer composed of a rubber composition, and a laminate comprising a metal foil and a resin, the rubber composition comprising:Type: ApplicationFiled: August 19, 2002Publication date: July 3, 2003Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Ayumu Ikemoto, Motoshige Hibino, Hidehito Ikeda, Kazutaka Katayama
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Patent number: 6552128Abstract: A rubber composition which can achieve superior adhesion force between it and a material to be adhered without a coating of an adhesive. The rubber composition includes the following components (A) to (D): (A) a rubber composed of at least one of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer, (B) a peroxide vulcanizing agent, (C) a resorcinol-based compound, and (D) a melamine resin.Type: GrantFiled: October 2, 2001Date of Patent: April 22, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Koji Senda
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Publication number: 20030050405Abstract: A low-contaminative hose which permits a fluid to be passed through with minimized fluid contamination, and a rubber composition used to produce such a hose. The low-contaminative hose is formed from the rubber composition that includes, as essential components, at least one rubber selected from an ethylene-propylene-diene terpolymer, an ethylene-propylene copolymer and a silicone rubber, a peroxide vulcanizing agent, and a filler having a laminar crystal structure.Type: ApplicationFiled: September 4, 2002Publication date: March 13, 2003Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Hidehito Ikeda, Ayumu Ikemoto, Yoshio Okado