Patents by Inventor Masanao Kuwabara
Masanao Kuwabara 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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Publication number: 20170103843Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.Type: ApplicationFiled: December 22, 2016Publication date: April 13, 2017Inventors: Kenji NAKANOUE, Kazuyuki FUKUI, Hidemasa YAMAGUCHI, Kouhei SATOU, Tatsuhito AZEGAMI, Makoto SHINOHARA, Toshiaki TAKAHASHI, Tooru HONMA, Masanao KUWABARA, Toshiki SHIRAHATA, Yuuji SATOU, Manabu DOHI, Ryosuke MIKOSHIBA, Hiroyuki ENDOU
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Patent number: 9601256Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.Type: GrantFiled: October 10, 2014Date of Patent: March 21, 2017Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.Inventors: Kenji Nakanoue, Kazuyuki Fukui, Hidemasa Yamaguchi, Kouhei Satou, Tatsuhito Azegami, Makoto Shinohara, Toshiaki Takahashi, Tooru Honma, Masanao Kuwabara, Toshiki Shirahata, Yuuji Satou, Manabu Dohi, Ryosuke Mikoshiba, Hiroyuki Endou
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Patent number: 9013263Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.Type: GrantFiled: August 26, 2009Date of Patent: April 21, 2015Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Kenji Nakanoue, Kazuyuki Fukui, Hidemasa Yamaguchi, Kouhei Satou, Tatsuhito Azegami, Makoto Shinohara, Toshiaki Takahashi, Tooru Honma, Masanao Kuwabara, Toshiki Shirahata, Yuuji Satou, Manabu Dohi, Ryosuke Mikoshiba, Hiroyuki Endou
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Publication number: 20150028977Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.Type: ApplicationFiled: October 10, 2014Publication date: January 29, 2015Inventors: Kenji NAKANOUE, Kazuyuki FUKUI, Hidemasa YAMAGUCHI, Kouhei SATOU, Tatsuhito AZEGAMI, Makoto SHINOHARA, Toshiaki TAKAHASHI, Tooru HONMA, Masanao KUWABARA, Toshiki SHIRAHATA, Yuuji SATOU, Manabu DOHI, Ryosuke MIKOSHIBA, Hiroyuki ENDOU
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Patent number: 8258912Abstract: Magnetic flux in a magnetic flux distribution inside a wound iron core for a stationary apparatus is mal-distributed toward the inner periphery side where the magnetic path of a laminated magnetic steel sheet is short with respect to the total lamination thickness and magnetic resistance is small and the inner periphery side on which magnetic flux is concentrated has a high magnetic flux density and increased iron loss, and therefore magnetic steel sheets of different magnetic characteristics are disposed at an arbitrary lamination ratio to make uniform the magnetic flux distribution inside the same wound iron core.Type: GrantFiled: November 25, 2009Date of Patent: September 4, 2012Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Hiroyuki Endou, Makoto Shinohara, Masanao Kuwabara, Yoichi Amako, Toshiki Shirahata
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Publication number: 20110234360Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.Type: ApplicationFiled: August 26, 2009Publication date: September 29, 2011Inventors: Kenji Nakanoue, Kazuyuki Fukui, Hidemasa Yamaguchi, Kouhei Satou, Tatsuhito Azegami, Makoto Shinohara, Toshiaki Takahashi, Tooru Honma, Masanao Kuwabara, Toshiki Shirahata, Yuuji Satou, Manabu Dohi, Ryosuke Mikoshiba, Hiroyuki Endou
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Publication number: 20100066476Abstract: Magnetic flux in a magnetic flux distribution inside a wound iron core for a stationary apparatus is mal-distributed toward the inner periphery side where the magnetic path of a laminated magnetic steel sheet is short with respect to the total lamination thickness and magnetic resistance is small and the inner periphery side on which magnetic flux is concentrated has a high magnetic flux density and increased iron loss, and therefore magnetic steel sheets of different magnetic characteristics are disposed at an arbitrary lamination ratio to make uniform the magnetic flux distribution inside the same wound iron core.Type: ApplicationFiled: November 25, 2009Publication date: March 18, 2010Inventors: Hiroyuki Endou, Makoto Shinohara, Masanao Kuwabara, Yoichi Amako, Toshiki Shirahata
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Patent number: 7675398Abstract: Magnetic flux in a magnetic flux distribution inside a wound iron core for a stationary apparatus is mal-distributed toward the inner periphery side where the magnetic path of a laminated magnetic steel sheet is short with respect to the total lamination thickness and magnetic resistance is small and the inner periphery side on which magnetic flux is concentrated has a high magnetic flux density and increased iron loss, and therefore magnetic steel sheets of different magnetic characteristics are disposed at an arbitrary lamination ratio to make uniform the magnetic flux distribution inside the same wound iron core.Type: GrantFiled: July 7, 2006Date of Patent: March 9, 2010Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Hiroyuki Endou, Makoto Shinohara, Masanao Kuwabara, Yoichi Amako, Toshiki Shirahata
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Publication number: 20080272876Abstract: Magnetic flux in a magnetic flux distribution inside a wound iron core for a stationary apparatus is mal-distributed toward the inner periphery side where the magnetic path of a laminated magnetic steel sheet is short with respect to the total lamination thickness and magnetic resistance is small and the inner periphery side on which magnetic flux is concentrated has a high magnetic flux density and increased iron loss, and therefore magnetic steel sheets of different magnetic characteristics are disposed at an arbitrary lamination ratio to make uniform the magnetic flux distribution inside the same wound iron core.Type: ApplicationFiled: July 7, 2006Publication date: November 6, 2008Inventors: Hiroyuki Endou, Makoto Shinohara, Masanao Kuwabara, Yoichi Amako, Toshiki Shirahata
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Patent number: 6769169Abstract: To provide a technology capable of restraining direct current magnetic deviation in a transformer without providing a gap in a core, an axis of easy magnetization is provided in a second direction intersecting with a first direction along a magnetic circuit of the core to thereby bring a B-H characteristic of a material characteristic of the core into an unsaturated state.Type: GrantFiled: February 7, 2003Date of Patent: August 3, 2004Assignee: Hitachi, Ltd.Inventors: Akira Nishimizu, Hideki Masuhara, Youichi Amako, Masanao Kuwabara
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Patent number: 6611191Abstract: To provide a technology capable of restraining direct current magnetic deviation in a transformer without providing a gap in a core, an axis of easy magnetization is provided in a second direction intersecting with a first direction along a magnetic circuit of the core to thereby bring a B-H characteristic of a material characteristic of the core into an unsaturated state.Type: GrantFiled: July 20, 2001Date of Patent: August 26, 2003Assignee: Hitachi, Ltd.Inventors: Akira Nishimizu, Hideki Masuhara, Youichi Amako, Masanao Kuwabara
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Publication number: 20030137386Abstract: To provide a technology capable of restraining direct current magnetic deviation in a transformer without providing a gap in a core, an axis of easy magnetization is provided in a second direction intersecting with a first direction along a magnetic circuit of the core to thereby bring a B-H characteristic of a material characteristic of the core into an unsaturated state.Type: ApplicationFiled: February 7, 2003Publication date: July 24, 2003Inventors: Akira Nishimizu, Hideki Masuhara, Youichi Amako, Masanao Kuwabara
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Publication number: 20020101321Abstract: To provide a technology capable of restraining direct current magnetic deviation in a transformer without providing a gap in a core, an axis of easy magnetization is provided in a second direction intersecting with a first direction along a magnetic circuit of the core to thereby bring a B-H characteristic of a material characteristic of the core into an unsaturated state.Type: ApplicationFiled: July 20, 2001Publication date: August 1, 2002Inventors: Akira Nishimizu, Hideki Masuhara, Youichi Amako, Masanao Kuwabara