Patents by Inventor Nobuharu Muto
Nobuharu Muto 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: 11097611Abstract: A vent control valve includes: a first case shaped in a tube that forms a passage for ventilation; a movable valve object arranged in the first case to open and close the passage; an inner case arranged in the first case to support the movable valve object; a second case disposed at a lower end of the first case; a first connection mechanism defined between the first case and the inner case, the first connection mechanism connecting the first case and the inner case with each other; and a second connection mechanism defined between the first case and the second case, the second connection mechanism connecting the first case and the second case with each other.Type: GrantFiled: September 6, 2016Date of Patent: August 24, 2021Assignee: KYOSAN DENKI CO., LTD.Inventors: Yusuke Mukasa, Nobuharu Muto
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Publication number: 20200079209Abstract: A vent control valve includes: a first case shaped in a tube that forms a passage for ventilation; a movable valve object arranged in the first case to open and close the passage; an inner case arranged in the first case to support the movable valve object; a second case disposed at a lower end of the first case; a first connection mechanism defined between the first case and the inner case, the first connection mechanism connecting the first case and the inner case with each other; and a second connection mechanism defined between the first case and the second case, the second connection mechanism connecting the first case and the second case with each other.Type: ApplicationFiled: September 6, 2016Publication date: March 12, 2020Applicant: KYOSAN DENKI CO., LTD.Inventors: Yusuke MUKASA, Nobuharu MUTO
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Patent number: 10525821Abstract: A vent control valve for a fuel tank controls a ventilation between a fuel tank and an outside. The vent control valve includes: a case having a tube shape that forms a passage for ventilation; a movable valve object arranged in the case to be movable in an axial direction of the case to open and close the passage; and a baffle component disposed between the case and the movable valve object and located on an outer side of the movable valve object in a radial direction. An outer passage is defined between the case and the baffle component, and the baffle component restricts a contact between a fluid flowing through the outer passage and the movable valve object.Type: GrantFiled: September 6, 2016Date of Patent: January 7, 2020Assignee: KYOSAN DENKI CO., LTD.Inventors: Akinari Sugiyama, Yusuke Mukasa, Nobuharu Muto
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Publication number: 20190070954Abstract: A float valve for a fuel tank has a pipe. The pipe is arranged to protrude into the fuel tank from the upper part of the fuel tank. A main-float valve is arranged in the pipe. A sub-float valve is disposed in the pipe on the fuel tank side of the main-float valve. The pipe has a first case housing the main-float valve. The pipe has a second case connected via a coupling mechanism to a lower end of the first case. The second case accommodates the sub-float valve. The second case has a tubular portion extending in a height direction between the connecting mechanism and the sub-float valve. The tubular portion extends further downwardly beyond the lower end of the first case.Type: ApplicationFiled: November 8, 2018Publication date: March 7, 2019Inventors: Yusuke MUKASA, Nobuharu MUTO
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Publication number: 20180194220Abstract: A vent control valve for a fuel tank controls a ventilation between a fuel tank and an outside. The vent control valve includes: a case having a tube shape that forms a passage for ventilation; a movable valve object arranged in the case to be movable in an axial direction of the case to open and close the passage; and a baffle component disposed between the case and the movable valve object and located on an outer side of the movable valve object in a radial direction. An outer passage is defined between the case and the baffle component, and the baffle component restricts a contact between a fluid flowing through the outer passage and the movable valve object.Type: ApplicationFiled: September 6, 2016Publication date: July 12, 2018Inventors: Akinari SUGIYAMA, Yusuke MUKASA, Nobuharu MUTO
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Patent number: 9410635Abstract: A fuel vapor control device has a flow control valve which regulates a flow amount of fuel vapor from a fuel tank to a canister. The flow control valve has a movable element accommodated in a case. The movable valve element has a central cylindrical part, an outer cylindrical part, and a disc part which connects the central cylindrical part and the outer cylindrical part. The central cylindrical part provides a central channel. The central channel provides a main channel which communicates an inlet and an outlet. A sub channel defined and formed between the movable element and the case is opened and closed by a valve formed by the case and the outer cylindrical part. The central channel makes easy setting of flow amount in regulated condition. Since turbulence is reduced, it is possible to perform stable regulation.Type: GrantFiled: April 2, 2015Date of Patent: August 9, 2016Assignee: Kyosan Denki Co., Ltd.Inventors: Yasuo Akimoto, Nobuharu Muto
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Publication number: 20150285394Abstract: A fuel vapor control device has a flow control valve which regulates a flow amount of fuel vapor from a fuel tank to a canister. The flow control valve has a movable element accommodated in a case. The movable valve element has a central cylindrical part, an outer cylindrical part, and a disc part which connects the central cylindrical part and the outer cylindrical part. The central cylindrical part provides a central channel. The central channel provides a main channel which communicates an inlet and an outlet. A sub channel defined and formed between the movable element and the case is opened and closed by a valve formed by the case and the outer cylindrical part. The central channel makes easy setting of flow amount in regulated condition. Since turbulence is reduced, it is possible to perform stable regulation.Type: ApplicationFiled: April 2, 2015Publication date: October 8, 2015Inventors: YASUO AKIMOTO, NOBUHARU MUTO
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Patent number: 8490642Abstract: A fuel-outflow check valve includes: a casing, at least one portion of which is located in a fuel tank, the casing having a ventilation hole via which the interior of the casing and the interior of the fuel tank communicate with each other and an upper wall portion protruding inward from the inner peripheral face of the casing; a float that is disposed in the interior of the casing and is vertically movable; and a valve element that is provided on the float and can contact a valve seat formed at the casing.Type: GrantFiled: December 12, 2007Date of Patent: July 23, 2013Assignee: Kyosan Denki Co., Ltd.Inventors: Nobuharu Muto, Yasuo Akimoto, Tsukasa Satou, Kazuya Okazaki, Shunichi Seki
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Patent number: 7509949Abstract: A vaporized fuel processing device attached to a fuel tank, includes a casing for forming an outer shell of the vaporized fuel processing device, a diaphragm valve unit opened at the time of increasing the pressure in the fuel tank, and a vent passage communicating with atmospheric air. In the vaporized fuel processing device, the diaphragm valve unit is disposed in a space formed in the casing.Type: GrantFiled: February 20, 2004Date of Patent: March 31, 2009Assignees: Kyosan Denki Co., Ltd., Honda Motor Co., Ltd.Inventors: Nobuharu Muto, Hiroya Tagami, Hideki Matsumoto, Naomasa Kaneko, Tadahisa Nakamura, Shinya Murabayashi, Junichi Koseki, Daisuke Sato, Toshiaki Nakai
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Publication number: 20080142087Abstract: A fuel-outflow check valve includes: a casing, at least one portion of which is located in a fuel tank, the casing having a ventilation hole via which the interior of the casing and the interior of the fuel tank communicate with each other and an upper wall portion protruding inward from the inner peripheral face of the casing; a float that is disposed in the interior of the casing and is vertically movable; and a valve element that is provided on the float and can contact a valve seat formed at the casing.Type: ApplicationFiled: December 12, 2007Publication date: June 19, 2008Applicant: KYOSAN DENKI CO., LTD.Inventors: Nobuharu Muto, Yasuo Akimoto, Tsukasa Satou, Kazuya Okazaki, Shunichi Seki
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Patent number: 6834771Abstract: A welding structure for a fuel tank including a resin inner shell and a resin outer shell interposed by a fuel permeation prevention layer such that they are laminated, and a resin component attached to the fuel tank. The resin component includes a body formed from a resin having low permeability to hydrocarbon gases, a packing material having low permeability to hydrocarbon gases which is fixed to the body, and a resin which is insert molded to at least a connecting portion of the body that connects with a connecting portion of the fuel tank, and which can be welded to the fuel tank.Type: GrantFiled: October 28, 2002Date of Patent: December 28, 2004Assignee: Kyosan Denki Co., Ltd.Inventors: Keiji Suzuki, Nobuharu Muto
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Publication number: 20040163718Abstract: A vaporized fuel processing device attached to a fuel tank, includes a casing for forming an outer shell of the vaporized fuel processing device, adiaphragm valve unit opened at the time of increasing the pressure in the fuel tank, and a vent passage communicating with atmospheric air. In the vaporized fuel processing device, the diaphragm valve unit is disposed in a space formed in the casing.Type: ApplicationFiled: February 20, 2004Publication date: August 26, 2004Applicants: KYOSAN DENKI CO., LTD., HONDA MOTOR CO., LTD.Inventors: Nobuharu Muto, Hiroya Tagami, Hideki Matsumoto, Naomasa Kaneko, Tadahisa Nakamura, Shinya Murabayashi, Junichi Koseki, Daisuke Sato, Toshiaki Nakai
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Publication number: 20040089340Abstract: In a fuel cut-off valve device including a casing, a float which is provided so as to be movable up-and-down in the casing, a valve element which is provided on a top surface of the float, a ventilation passage which is communicated with a downstream side of the valve element, at least one opening which is provided below the float and is positioned in the fuel tank, there is provided a plate whose diameter is larger than a diameter of the float and which is provided below the float.Type: ApplicationFiled: October 24, 2003Publication date: May 13, 2004Applicant: KYOSAN DENKI CO., LTD.Inventors: Nobuharu Muto, Hiroya Tagami
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Publication number: 20040079752Abstract: A welding structure for a fuel tank including a resin inner shell and a resin outer shell interposed by a fuel permeation prevention layer such that they are laminated, and a resin component attached to the fuel tank. The resin component includes a body formed from a resin having low permeability to hydrocarbon gases, a packing material having low permeability to hydrocarbon gases which is fixed to the body, and a resin which is insert molded to at least a connecting portion of the body that connects with a connecting portion of the fuel tank, and which can be welded to the fuel tank.Type: ApplicationFiled: October 28, 2002Publication date: April 29, 2004Applicant: KYOSAN DENKI CO., LTD.Inventors: Keiji Suzuki, Nobuharu Muto
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Patent number: 6564822Abstract: A fuel cutoff apparatus is provided with an outer casing and an inner float disposed inside the outer casing so as to be vertically movable therein. A plurality of openings are provided in a side face of the outer casing. A valve opening is provided at a top portion of the outer casing and a valve body is provided at a top portion of the inner float. There is also provided a plate that closes a bottom surface of the outer casing and an exhaust port for exhausting fuel provided in the plate closed by a valve protrusion provided on a bottom portion of the inner float.Type: GrantFiled: October 9, 2001Date of Patent: May 20, 2003Assignee: Kyosan Denki Co., Ltd.Inventors: Nobuharu Muto, Norikazu Sugimura
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Patent number: 6546954Abstract: A flow control valve with a reduced number of parts and with few restrictions on installation space is provided. A back pressure chamber of a diaphragm-type valve body communicates with a communication port through a vent hole formed in a case of the flow control valve. An air filter is integrated with the flow control valve.Type: GrantFiled: December 14, 2000Date of Patent: April 15, 2003Assignee: Kyosan Denki Co. Ltd.Inventors: Masato Sato, Nobuharu Muto
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Publication number: 20030066558Abstract: In a vent valve structure including a cut valve that shuts off the flow of fuel vapor and fuel liquid, a positive pressure adjustment valve that opens when positive pressure is applied, and a negative pressure adjustment valve that opens when negative pressure is applied, the negative pressure adjustment valve is provided in a row arrangement with the cut valve in a position linking a ventilating passage and a fuel tank so as to bypass the valve opening of the cut valve.Type: ApplicationFiled: October 1, 2002Publication date: April 10, 2003Applicant: KYOSAN DENKI Co., LTD.Inventors: Nobuharu Muto, Hiroya Tagami
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Patent number: 6475625Abstract: In a structure for joining a first plastic part and a second plastic part, the first plastic part is composed of at least one resin such as polyamide (PA), polybutylene terephthalate (PBT), polyacetal (POM), polyethylene terephthalate (PET), or polyphenylene sulfide (PPS), while the second plastic part is composed of high-density polyethylene (HDPE). Between the two parts, a metamorphic polyethylene layer exhibiting a good joining property for both the first and second plastic parts is interposed to join the parts.Type: GrantFiled: April 5, 2001Date of Patent: November 5, 2002Assignee: Kyosan Denki Co., Ltd.Inventors: Nobuharu Muto, Hiroshi Osaki
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Publication number: 20020040730Abstract: A fuel cutoff apparatus is provided with an outer casing and an inner float disposed inside the outer casing so as to be vertically movable therein. A plurality of openings are provided in a side face of the outer casing. A valve opening is provided at a top portion of the outer casing and a valve body is provided at a top portion of the inner float.Type: ApplicationFiled: October 9, 2001Publication date: April 11, 2002Applicant: KYOSAN DENKI CO., LTD.Inventors: Nobuharu Muto, Norikazu Sugimura
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Patent number: 6349741Abstract: A flow control valve with a reduced number of parts and with few restrictions on installation space is provided. A back pressure chamber of a diaphragm-type valve body communicates with a communication port through a vent hole formed in a case of the flow control valve. An air filter is integrated with the flow control valve.Type: GrantFiled: December 14, 2000Date of Patent: February 26, 2002Assignee: Kyosan Denki Co. Ltd.Inventors: Masato Sato, Nobuharu Muto