Patents by Inventor Michihiro HATANAKA
Michihiro HATANAKA 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: 10651001Abstract: An emitter (3) and a target (7) are arranged so as to face each other in a vacuum chamber (1), and a guard electrode (5) is provided at an outer circumferential side of an electron generating portion (31) of the emitter (3). The emitter (3) is supported movably in both end directions of the vacuum chamber (1) by the emitter supporting unit (4) having a movable body (40). The emitter supporting unit (4) is operated by an operating unit (6) connected to the emitter supporting unit (4). By operating the emitter supporting unit (4) by the operating unit (6), a distance between the electron generating portion (31) of the emitter (3) and the target (7) is changed, and a position of the emitter (3) is fixed at an arbitrary distance, then field emission is performed with the position of the emitter (3) fixed.Type: GrantFiled: March 16, 2017Date of Patent: May 12, 2020Assignee: MEIDENSHA CORPORATIONInventors: Daizo Takahashi, Michihiro Hatanaka
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Patent number: 10607801Abstract: Emitter (3) and target (7) are arranged so as to face each other in vacuum chamber (1), and guard electrode (5) is provided at outer circumferential side of electron generating portion (31) of emitter (3). Guard electrode (5) is supported movably in directions of both ends of vacuum chamber (1) by guard electrode supporting unit (6). To perform regeneration process of guard electrode (5), guard electrode (5) is moved to opening (22) side (to separate position) by operating guard electrode supporting unit (6), and a state in which field emission of electron generating portion (31) is suppressed is set, then by applying voltage across guard electrode (5), discharge is repeated. After performing regeneration process, by operating guard electrode supporting unit (6) again, guard electrode (5) is moved to opening (21) side (to emitter position), and a state in which field emission of electron generating portion (31) is possible is set.Type: GrantFiled: March 16, 2017Date of Patent: March 31, 2020Assignee: MEIDENSHA CORPORATIONInventors: Daizo Takahashi, Toshinori Tatsumi, Michihiro Hatanaka
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Publication number: 20190341218Abstract: Emitter (3) and target (7) are arranged so as to face each other in vacuum chamber (1), and guard electrode (5) is provided at outer circumferential side of electron generating portion (31) of emitter (3). Guard electrode (5) is supported movably in directions of both ends of vacuum chamber (1) by guard electrode supporting unit (6). To perform regeneration process of guard electrode (5), guard electrode (5) is moved to opening (22) side (to separate position) by operating guard electrode supporting unit (6), and a state in which field emission of electron generating portion (31) is suppressed is set, then by applying voltage across guard electrode (5), discharge is repeated. After performing regeneration process, by operating guard electrode supporting unit (6) again, guard electrode (5) is moved to opening (21) side (to emitter position), and a state in which field emission of electron generating portion (31) is possible is set.Type: ApplicationFiled: March 16, 2017Publication date: November 7, 2019Applicant: MEIDENSHA CORPORATIONInventors: Daizo TAKAHASHI, Toshinori TATSUMI, Michihiro HATANAKA
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Publication number: 20190333730Abstract: An emitter (3) and a target (7) are arranged so as to face each other in a vacuum chamber (1), and a guard electrode (5) is provided at an outer circumferential side of an electron generating portion (31) of the emitter (3). The emitter (3) is supported movably in both end directions of the vacuum chamber (1) by the emitter supporting unit (4) having a movable body (40). The emitter supporting unit (4) is operated by an operating unit (6) connected to the emitter supporting unit (4). By operating the emitter supporting unit (4) by the operating unit (6), a distance between the electron generating portion (31) of the emitter (3) and the target (7) is changed, and a position of the emitter (3) is fixed at an arbitrary distance, then field emission is performed with the position of the emitter (3) fixed.Type: ApplicationFiled: March 16, 2017Publication date: October 31, 2019Applicant: Meidensha CorporationInventors: Daizo TAKAHASHI, Michihiro HATANAKA
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Patent number: 10453611Abstract: Disclosed is a method for manufacturing a vacuum capacitor (1) provided with an insulating pipe (2), terminal electrodes (3, 4) that are disposed at open ends of the insulating pipe (2), and spiral electrodes (5, 6) that are connected to the terminal electrodes (3, 4). An electrode plate (7) and a spacer (8) are wound on a core member (9) to prepare a spiral electrode (5), and an electrode plate (10) and a spacer (8) are wound on a core member (11) to prepare a spiral electrode (6). A linear brazing material (12) is disposed in a groove (3c) formed in a surface of the terminal electrode (3) on an inner side of the insulating pipe (2). A platy brazing material (13) is sandwiched between the terminal electrode (3) and the spiral electrode (5) to fix the spiral electrode (5) to the terminal electrode (3).Type: GrantFiled: August 16, 2017Date of Patent: October 22, 2019Assignee: MEIDENSHA CORPORATIONInventors: Michihiro Hatanaka, Daizo Takahashi
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Patent number: 10424457Abstract: Emitter (3) and target (7) are arranged so as to face each other in vacuum chamber (1), and guard electrode (5) is provided at outer circumferential side of electron generating portion (31) of emitter (3). Emitter (3) is supported movably in both end directions of vacuum chamber (1) by emitter supporting unit (4) having movable body (40). To perform regeneration process of guard electrode (5), emitter is moved to no-discharge position by operating emitter supporting unit, and state in which field emission of electron generating portion (31) is suppressed is set, then by applying voltage across guard electrode (5), discharge is repeated. After regeneration process, by operating emitter supporting unit again, emitter is moved to discharge position, and state in which field emission of electron generating portion (31) is possible is set with movement of movable body (40) toward the other and side being restrained by movement restraining unit (6).Type: GrantFiled: March 16, 2017Date of Patent: September 24, 2019Assignee: MEIDENSHA CORPORATIONInventors: Daizo Takahashi, Michihiro Hatanaka
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Publication number: 20190244759Abstract: Disclosed is a method for manufacturing a vacuum capacitor (1) provided with an insulating pipe (2), terminal electrodes (3, 4) that are disposed at open ends of the insulating pipe (2), and spiral electrodes (5, 6) that are connected to the terminal electrodes (3, 4). An electrode plate (7) and a spacer (8) are wound on a core member (9) to prepare a spiral electrode (5), and an electrode plate (10) and a spacer (8) are wound on a core member (11) to prepare a spiral electrode (6). A linear brazing material (12) is disposed in a groove (3c) formed in a surface of the terminal electrode (3) on an inner side of the insulating pipe (2). A platy brazing material (13) is sandwiched between the terminal electrode (3) and the spiral electrode (5) to fix the spiral electrode (5) to the terminal electrode (3).Type: ApplicationFiled: August 16, 2017Publication date: August 8, 2019Applicant: MEIDENSHA CORPORATIONInventors: Michihiro HATANAKA, Daizo TAKAHASHI
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Publication number: 20190214215Abstract: Emitter (3) and target (7) are arranged so as to face each other in vacuum chamber (1), and guard electrode (5) is provided at outer circumferential side of electron generating portion (31) of emitter (3). Emitter (3) is supported movably in both end directions of vacuum chamber (1) by emitter supporting unit (4) having movable body (40). To perform regeneration process of guard electrode (5), emitter is moved to no-discharge position by operating emitter supporting unit, and state in which field emission of electron generating portion (31) is suppressed is set, then by applying voltage across guard electrode (5), discharge is repeated. After regeneration process, by operating emitter supporting unit again, emitter is moved to discharge position, and state in which field emission of electron generating portion (31) is possible is set with movement of movable body (40) toward the other end side being restrained by movement restraining unit (6).Type: ApplicationFiled: March 16, 2017Publication date: July 11, 2019Applicant: MEIDENSHA CORPORATIONInventors: Daizo TAKAHASHI, Michihiro HATANAKA