Patents by Inventor Makoto Seto
Makoto Seto 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: 10529306Abstract: Pivot shaft support members, formed as component parts separate from support posts of a frame of a pedal apparatus, are mounted on respective upper ends of the support posts, and the pivot shaft support members pivotably support the opposite ends of a pivot shaft for a beater rod. A heel section is provided on a rear end portion of an under plate of the pedal apparatus, and a pair of left and right hinge support members, formed as component parts separate from the heel section, are mounted to the heel section. The hinge support members pivotably support the opposite ends of a pivot shaft of a hinge section of a foot board. Because the pivot shaft support members and the hinge support members are separate component parts from the frame, mounted positions of these support members can be adjusted finely during mounting, to the frame, of the support members.Type: GrantFiled: March 7, 2017Date of Patent: January 7, 2020Assignee: YAMAHA CORPORATIONInventors: Fumihiro Shigenaga, Hirochika Watanabe, Tomohiro Fujita, Makoto Seto
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Publication number: 20170278490Abstract: Pivot shaft support members, formed as component parts separate from support posts of a frame of a pedal apparatus, are mounted on respective upper ends of the support posts, and the pivot shaft support members pivotably support the opposite ends of a pivot shaft for a beater rod. A heel section is provided on a rear end portion of an under plate of the pedal apparatus, and a pair of left and right hinge support members, formed as component parts separate from the heel section, are mounted to the heel section. The hinge support members pivotably support the opposite ends of a pivot shaft of a hinge section of a foot board. Because the pivot shaft support members and the hinge support members are separate component parts from the frame, mounted positions of these support members can be adjusted finely during mounting, to the frame, of the support members.Type: ApplicationFiled: March 7, 2017Publication date: September 28, 2017Inventors: Fumihiro SHIGENAGA, Hirochika WATANABE, Tomohiro FUJITA, Makoto SETO
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Patent number: 8559202Abstract: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.Type: GrantFiled: March 2, 2010Date of Patent: October 15, 2013Assignee: Mitsubishi Electric CorporationInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada, Noriyuki Matsubara, Takashi Kumagai
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Publication number: 20100177540Abstract: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.Type: ApplicationFiled: March 2, 2010Publication date: July 15, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada, Noriyuki Matsubara, Takashi Kumagai
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Patent number: 7719865Abstract: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.Type: GrantFiled: February 21, 2006Date of Patent: May 18, 2010Assignee: Mitsubishi Electric CorporationInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada, Noriyuki Matsubara, Takashi Kumagai
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Patent number: 7616429Abstract: Provided is an electric double layer capacitor including a large capacity single cell having a large electrostatic capacity and a small capacity single cell are connected to the same exterior case in parallel, and a thickness of a separator of the large capacity single cell is made thicker than a thickness of a separator of the small capacity single cell. With this structure, a supply amount of an electrolyte solution to the large capacity single cell is markedly increased compared with the small capacity single cell, thereby being capable of preventing degradation of the large capacity single cells and the small capacity single cells and providing the electric double layer capacitor having an excellent cycle life and having a large power storage amount while keeping characteristics capable of instantaneously allowing large current to flow.Type: GrantFiled: February 28, 2007Date of Patent: November 10, 2009Assignee: Mitsubishi Electric CorporationInventors: Kenro Mitsuda, Ikuro Suga, Sadayuki Matsumoto, Makoto Seto, Naoki Ochi, Yoshiyuki Takuma
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Patent number: 7602626Abstract: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, a second inverter is connected in series to one of two terminals on the AC side of a first inverter that uses, as its DC source, a DC voltage boosted from a solar light voltage by a chopper circuit. A third inverter is connected in series to the other terminal. Then, output voltages of the second and third inverters are controlled to be equal, and an output voltage is provided by using the sum of the generated voltages of the first, second, and third inverters. Thus, a mid-point potential of the DC power source is made equivalent to an intermediate potential of the output voltage of the power conversion apparatus, that is, the mid-point potential (ground potential) of a system.Type: GrantFiled: February 21, 2006Date of Patent: October 13, 2009Assignee: Mitsubishi Electric CorporationInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada
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Patent number: 7596008Abstract: A power conversion apparatus includes a first single-phase inverter that uses as a DC power source a first DC voltage that is boosted from a solar light voltage by a boosting chopper circuit. The first single-phase inverter is arranged between two single-phase inverters that use second DC power sources that are supplied from the first DC power source. AC sides of the respective single-phase inverters are connected in series. A power conditioner thus configured provides an output voltage using the sum of the generated voltages of the respective single-phase inverters. Chopper circuits are connected between the first DC power source and the second DC power sources, and power is supplied to the second DC power sources from the first DC power source via switching devices in the single-phase inverters.Type: GrantFiled: February 21, 2006Date of Patent: September 29, 2009Assignee: Mitsubishi Electric CorporationInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada, Hiroshi Ito, Tomoyuki Kawakami
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Publication number: 20090015071Abstract: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, a second inverter is connected in series to one of two terminals on the AC side of a first inverter that uses, as its DC source, a DC voltage boosted from a solar light voltage by a chopper circuit. A third inverter is connected in series to the other terminal. Then, output voltages of the second and third inverters are controlled to be equal, and an output voltage is provided by using the sum of the generated voltages of the first, second, and third inverters. Thus, a mid-point potential of the DC power source is made equivalent to an intermediate potential of the output voltage of the power conversion apparatus, that is, the mid-point potential (ground potential) of a system.Type: ApplicationFiled: February 21, 2006Publication date: January 15, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada
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Publication number: 20080192519Abstract: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.Type: ApplicationFiled: February 21, 2006Publication date: August 14, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada, Noriyuki Matsubara, Takashi Kumagai
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Publication number: 20080101101Abstract: A power conversion apparatus includes a first single-phase inverter that uses ask a DC power source a first DC voltage that is boosted from a solar light voltage by a boosting chopper circuit. The first single-phase inverter is arranged between two single-phase inverters that use second DC power sources that are supplied from the first DC power source. AC sides of the respective single-phase inverters are connected in series. A power conditioner thus configured provides an output voltage using the sum of the generated voltages of the respective single-phase inverters. Chopper circuits are connected between the first DC power source and the second DC power sources, and power is supplied to the second DC power sources from the first DC power source via switching devices in the single-phase inverters.Type: ApplicationFiled: February 21, 2006Publication date: May 1, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada, Hiroshi Ito, Tomoyuki Kawakami
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Publication number: 20070215926Abstract: Provided is an electric double layer capacitor including a large capacity single cell having a large electrostatic capacity and a small capacity single cell are connected to the same exterior case in parallel, and a thickness of a separator of the large capacity single cell is made thicker than a thickness of a separator of the small capacity single cell. With this structure, a supply amount of an electrolyte solution to the large capacity single cell is markedly increased compared with the small capacity single cell, thereby being capable of preventing degradation of the large capacity single cells and the small capacity single cells and providing the electric double layer capacitor having an excellent cycle life and having a large power storage amount while keeping characteristics capable of instantaneously allowing large current to flow.Type: ApplicationFiled: February 28, 2007Publication date: September 20, 2007Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenro Mitsuda, Ikuro Suga, Sadayuki Matsumoto, Makoto Seto, Naoki Ochi, Yoshiyuki Takuma
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Patent number: 4651078Abstract: The present invention relates to a device for driving an induction motor comprising:a variable converter which converts an alternating current into a direct current;an inverter device which converts a D-C output of said variable converter into an alternating current;an induction motor driven by said inverter device;a speed detector which detects the speed of said induction motor; anda speed controller which amplifies a reference speed signal input to the inverter device and which provides as an output signal therefrom the difference between the reference speed signal and the speed of the induction motor;wherein the output of said speed controller is changed depending upon the running speed of the induction motor.Type: GrantFiled: October 25, 1984Date of Patent: March 17, 1987Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yukio Todoroki, Makoto Seto, Kimihiro Yanagihara, Sadanari Yano