Patents by Inventor Ken Maeda
Ken Maeda 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: 11973533Abstract: An inter-transmission device connection registration device 30A includes a storage unit 31 that registers connection information of a case where transponders 12a to 13n and photo couplers 14a to 14n as divided various transmission devices are connected through a port o and a port i, a light emission instruction unit 33 that provides a light emission instruction to the subordinately connected transponders, a transmission/reception detection unit 34 configured to detect a light transmission and a light reception at opposing ports o and i1 between transmission devices, e.g., the transponder 12a and the photo coupler 14 in accordance with the light emission instruction, and a registration control unit 35 that performs a control of registering, in the storage unit 31, connection information W2a of the port o on a light transmission side and the port i1 on a light reception side that are detected.Type: GrantFiled: February 25, 2020Date of Patent: April 30, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Kentaro Honda, Ken Ito, Hideki Maeda
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Publication number: 20240068470Abstract: An electric compressor includes: a compression part; an electric motor; an inverter; a housing including a plurality of housing forming members made of metal; a seal member that has an insulation property and is provided between the housing forming members adjacent to each other; and a potential equalization member that is made of metal and is in contact with both the adjacent housing forming members to equalize potentials of the adjacent housing forming members. The adjacent housing forming members include mating surfaces, respectively. An insertion hole is formed in one of the mating surfaces of the adjacent housing forming members, at a position in which the seal member is not provided. The potential equalization member includes an insertion portion inserted into the insertion hole, and a contact portion that is a plate portion extending in a gap between the mating surfaces and is in contact with both the mating surfaces.Type: ApplicationFiled: July 25, 2023Publication date: February 29, 2024Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ken NAMIKI, Takuro Yamashita, Takumi Maeda, Akinori Tanabe, Takafumi Konishi, Takahiro Suzuki, Yoshitaka Saito
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Patent number: 11351559Abstract: A rotary atomization head is provided, which prevents discharged threads of a coating material from making contact with each other and from being unified. A rotary head 1 includes: a diffusion surface 122 to diffuse the coating material toward an outer edge part 123 by centrifugal force; and a plurality of grooves 124 formed on the outer edge part 123. The plurality of grooves 124 extends in a radial direction. The adjacent grooves 124 have different depths. The grooves 124 have the same width.Type: GrantFiled: June 14, 2019Date of Patent: June 7, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TRINITY INDUSTRIAL CORPORATIONInventors: Shinji Tani, Akira Numasato, Takahito Kondo, Yuki Murai, Takao Ueno, Takatoshi Okuta, Ken Maeda, Kota Harada
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Publication number: 20200160551Abstract: Simplify, downsize and reduce power of devices which comprise the satellite navigation system used in approach and docking in space. The navigation system 1 which estimates an attitude of a target object T in space comprises: an optical marker 10 that is attached to the target T and reflects light; a lighting device 20 that irradiates the target object T with light of a predetermined wavelength band; an image acquisition device 30 that acquires an image of the optical marker 10 which has reflected the light of the predetermined wavelength band; and an image processing device 40 that processes the image acquired by the image acquisition device 30 and thereby estimates the attitude of the target object T. The lighting device 20 and the image processing device 30 are loaded on a spacecraft 2.Type: ApplicationFiled: May 16, 2018Publication date: May 21, 2020Inventor: Ken MAEDA
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Publication number: 20190388915Abstract: A rotary atomization head is provided, which prevents discharged threads of a coating material from making contact with each other and from being unified. A rotary head 1 includes: a diffusion surface 122 to diffuse the coating material toward an outer edge part 123 by centrifugal force; and a plurality of grooves 124 formed on the outer edge part 123. The plurality of grooves 124 extends in a radial direction. The adjacent grooves 124 have different depths. The grooves 124 have the same width.Type: ApplicationFiled: June 14, 2019Publication date: December 26, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TRINITY INDUSTRIAL CORPORATIONInventors: Shinji Tani, Akira Numasato, Takahito Kondo, Yuki Murai, Takao Ueno, Takatoshi Okuta, Ken Maeda, Kota Harada
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Publication number: 20190367192Abstract: An object is to increase the success rate of missions at a low cost in a capturing system that captures a target object in the space. A capturing system 1 that captures a target object T in the space has: a plate-like body 10 that is attached to the target object T and attracted with magnetic force; and an aerospace vehicle 20 that has a magnetic force generating portion 23 which generates the magnetic force attracting the plate-like body 10. The aerospace vehicle 20 has a magnetic force generating portion 23 generating magnetic force and enables capturing of the target object T by attracting the plate-like body 10, which is attached to the target object T in the space and attracted with magnetic force, with magnetic force generated in the magnetic force generating portion 23.Type: ApplicationFiled: February 1, 2018Publication date: December 5, 2019Inventors: Ken Maeda, Yuki Seto
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Patent number: 10309798Abstract: Simplify, downsize and reduce power of devices which comprise the satellite navigation system used in approach and docking in space. The navigation system 1 which estimates an attitude of a target object T in space comprises: an optical marker 10 that is attached to the target T and reflects light; a lighting device 20 that irradiates the target object T with light of a predetermined wavelength band; an image acquisition device 30 that acquires an image of the optical marker 10 which has reflected the light of the predetermined wavelength band; and an image processing device 40 that processes the image acquired by the image acquisition device 30 and thereby estimates the attitude of the target object T. The lighting device 20 and the image processing device 30 are loaded on an aerospace vehicle 2.Type: GrantFiled: June 19, 2017Date of Patent: June 4, 2019Assignee: ASTROSCALE JAPAN INC.Inventor: Ken Maeda
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Publication number: 20180335314Abstract: Simplify, downsize and reduce power of devices which comprise the satellite navigation system used in approach and docking in space. The navigation system 1 which estimates an attitude of a target object T in space comprises: an optical marker 10 that is attached to the target T and reflects light; a lighting device 20 that irradiates the target object T with light of a predetermined wavelength band; an image acquisition device 30 that acquires an image of the optical marker 10 which has reflected the light of the predetermined wavelength band; and an image processing device 40 that processes the image acquired by the image acquisition device 30 and thereby estimates the attitude of the target object T. The lighting device 20 and the image processing device 30 are loaded on an aerospace vehicle 2.Type: ApplicationFiled: June 19, 2017Publication date: November 22, 2018Inventor: Ken MAEDA
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Publication number: 20180229865Abstract: The objective is to increase the success rate of missions at a low cost for a capturing system which captures a target object in space. A capturing system that captures a target object in space has: a plate-like body that is attached to the target object and attracted with magnetic force; and an aerospace vehicle that has a magnetic force generating portion which generates the magnetic force attracting the plate-like body. The aerospace vehicle has a magnetic force generating portion that generates a magnetic force and enables capture of the target object by attracting the plate-like body, which is attached to the target object in space and is attracted with a magnetic force, with the magnetic force generated by the magnetic force generating portion.Type: ApplicationFiled: April 7, 2017Publication date: August 16, 2018Inventors: Ken MAEDA, Yuki SETO
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Patent number: 9999150Abstract: An object of the invention is to improve the cooling performance for a bus bar and a smoothing capacitor in an electric power converter. The electric power converter of the present invention includes a power semiconductor module including a power semiconductor element that converts a DC current to an AC current, a capacitor cell that smooths a DC voltage, a bus bar that electrically connects the power semiconductor module and the capacitor cell, a base plate that is disposed between the bus bar and the capacitor cell, and a sealing material that seals the capacitor cell, the bus bar, and the base plate. The base plate forms an opening through which a capacitor terminal extending from the capacitor cell passes.Type: GrantFiled: November 6, 2013Date of Patent: June 12, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Ken Maeda, Toshiya Satoh
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Patent number: 9950963Abstract: A thermal insulator with both excellent heat insulation and strength and a method of manufacturing the thermal insulator are provided. A thermal insulator according to the present invention includes metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber, wherein the thermal insulator has a bridge structure between the metal oxide fine particles which is formed by elution of part of the metal oxide fine particles. A method of manufacturing a thermal insulator according to the present invention includes a curing step of curing a dry pressed compact including metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber under a pressurized vapor saturated atmosphere at a temperature equal to or higher than 100° C. for four hours and a drying step of drying the cured dry pressed compact.Type: GrantFiled: April 29, 2016Date of Patent: April 24, 2018Assignee: NICHIAS CORPORATIONInventors: Akifumi Sakamoto, Yoshihiko Goto, Yasuo Ito, Ken Maeda
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Publication number: 20160244371Abstract: A thermal insulator with both excellent heat insulation and strength and a method of manufacturing the thermal insulator are provided. A thermal insulator according to the present invention includes metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber, wherein the thermal insulator has a bridge structure between the metal oxide fine particles which is formed by elution of part of the metal oxide fine particles. A method of manufacturing a thermal insulator according to the present invention includes a curing step of curing a dry pressed compact including metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber under a pressurized vapor saturated atmosphere at a temperature equal to or higher than 100° C. for four hours and a drying step of drying the cured dry pressed compact.Type: ApplicationFiled: April 29, 2016Publication date: August 25, 2016Applicant: NICHIAS CORPORATIONInventors: Akifumi SAKAMOTO, Yoshihiko GOTO, Yasuo ITO, Ken MAEDA
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Patent number: 9419535Abstract: An electric power converter is provided with: a power semiconductor module, which has a power semiconductor element that converts a direct current into an alternating current; a capacitor module, which has a capacitor element that smooths the direct current; and a cooling body, which cools the power semiconductor module and the capacitor module. The capacitor module has: a case, which has an approximately rectangular shape, has an opening formed in one surface, and has a space for housing the capacitor element; and a DC conductor for electrically connecting the power semiconductor element and the capacitor element to each other. The cooling body is formed to face the bottom surface on the inner wall of the case, and both the side surfaces of the case, the side surfaces facing each other. Between the capacitor element and the inner wall surfaces of the case, the direct current conductor is formed along the bottom surface and both the side surfaces of the case.Type: GrantFiled: May 25, 2012Date of Patent: August 16, 2016Assignee: Hitachi Automotive Systems, Ltd.Inventors: Atsuo Nishihara, Ken Maeda, Kinya Nakatsu, Yukio Hattori
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Patent number: 9246408Abstract: The power conversion apparatus includes an inverter circuit which converts a DC current into an AC current and have a U-phase, V-phase, and w-phase power semiconductor modules, and a capacitor module for smoothing the DC current. Each of the power semiconductor modules is configured separately and connected to a first bus bar. The first bus bar is configured with a first positive side bus bar, a first negative side bus bar, and a first insulation member arranged between the first positive side bus bar and the first negative side bus bar. The first bus bar includes a first to third terminals to which the U-phase, V-phase, and W-phase power semiconductor modules are connected, respectively, and a fourth terminal connected to a terminal of the second bus bar protruding from a surface of sealing material of a second bus bar.Type: GrantFiled: May 22, 2012Date of Patent: January 26, 2016Assignee: Hitachi Automotive Systems, Ltd.Inventors: Ken Maeda, Toshiya Satoh, Hiroyuki Yamai
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Publication number: 20150305188Abstract: An object of the invention is to improve the cooling performance for a bus bar and a smoothing capacitor in an electric power converter. The electric power converter of the present invention includes a power semiconductor module including a power semiconductor element that converts a DC current to an AC current, a capacitor cell that smooths a DC voltage, a bus bar that electrically connects the power semiconductor module and the capacitor cell, a base plate that is disposed between the bus bar and the capacitor cell, and a sealing material that seals the capacitor cell, the bus bar, and the base plate. The base plate forms an opening through which a capacitor terminal extending from the capacitor cell passes.Type: ApplicationFiled: November 6, 2013Publication date: October 22, 2015Inventors: Ken MAEDA, Toshiya SATOH
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Patent number: 9159506Abstract: A power conversion device for a vehicle includes: a power module that includes a switching device and, upon operation of the switching device, converts DC power into AC power to be supplied to an electric machine for driving a vehicle; a capacitor module that includes a smoothing capacitor element, an input-side power source terminal for receiving DC power, and an output-side power source terminal for supplying DC power to the power module; and a noise removal capacitor for removing noise, wherein: the noise removal capacitor is built in the capacitor module, and the noise removal capacitor is electrically connected to the input-side power source terminal in a position where a distance between a connection position of the noise removal capacitor and the input-side power source terminal is less than a distance between a connection position of the noise removal capacitor and the output-side power source terminal of the capacitor module.Type: GrantFiled: January 22, 2014Date of Patent: October 13, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takeshi Matsuo, Kinya Nakatsu, Toshiya Satoh, Ken Maeda
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Publication number: 20140133199Abstract: A power conversion device for a vehicle includes: a power module that includes a switching device and, upon operation of the switching device, converts DC power into AC power to be supplied to an electric machine for driving a vehicle; a capacitor module that includes a smoothing capacitor element, an input-side power source terminal for receiving DC power, and an output-side power source terminal for supplying DC power to the power module; and a noise removal capacitor for removing noise, wherein: the noise removal capacitor is built in the capacitor module, and the noise removal capacitor is electrically connected to the input-side power source terminal in a position where a distance between a connection position of the noise removal capacitor and the input-side power source terminal is less than a distance between a connection position of the noise removal capacitor and the output-side power source terminal of the capacitor module.Type: ApplicationFiled: January 22, 2014Publication date: May 15, 2014Applicant: Hitachi Automotive Systems, Ltd.Inventors: Takeshi MATSUO, Kinya NAKATSU, Toshiya SATOH, Ken MAEDA
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Publication number: 20140085955Abstract: The power conversion apparatus includes an inverter circuit which converts a DC current into an AC current and have a U-phase, V-phase, and w-phase power semiconductor modules, and a capacitor module for smoothing the DC current. Each of the power semiconductor modules is configured separately and connected to a first bus bar. The first bus bar is configured with a first positive side bus bar, a first negative side bus bar, and a first insulation member arranged between the first positive side bus bar and the first negative side bus bar. The first bus bar includes a first to third terminals to which the U-phase, V-phase, and W-phase power semiconductor modules are connected, respectively, and a fourth terminal connected to a terminal of the second bus bar protruding from a surface of sealing material of a second bus bar.Type: ApplicationFiled: May 22, 2012Publication date: March 27, 2014Applicant: Hitachi Automotive Systems, Ltd.Inventors: Ken Maeda, Toshiya Satoh, Hiroyuki Yamai
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Publication number: 20140078803Abstract: An electric power converter is provided with: a power semiconductor module, which has a power semiconductor element that converts a direct current into an alternating current; a capacitor module, which has a capacitor element that smooths the direct current; and a cooling body, which cools the power semiconductor module and the capacitor module. The capacitor module has a case, which has an approximately rectangular shape, has an opening formed in one surface, and has a space for housing the capacitor element; and a DC conductor for electrically connecting the power semiconductor element and the capacitor element to each other. The cooling body is formed to face the bottom surface on the inner wall of the case, and both the side surfaces of the case, the side surfaces facing each other. Between the capacitor element and the inner wall surfaces of the case, the direct current conductor is formed along the bottom surface and both the side surfaces of the case.Type: ApplicationFiled: May 25, 2012Publication date: March 20, 2014Applicant: Hitachi Automotive Systems, Ltd.Inventors: Atsuo Nishihara, Ken Maeda, Kinya Nakatsu, Yukio Hattori
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Patent number: 8674636Abstract: A power conversion device for a vehicle includes: a power module that includes a switching device and, upon operation of the switching device, converts DC power into AC power to be supplied to an electric machine for driving a vehicle; a capacitor module that includes a smoothing capacitor element, an input-side power source terminal for receiving DC power, and an output-side power source terminal for supplying DC power to the power module; and a noise removal capacitor for removing noise, wherein: the noise removal capacitor is built in the capacitor module, and the noise removal capacitor is electrically connected to the input-side power source terminal in a position where a distance between a connection position of the noise removal capacitor and the input-side power source terminal is less than a distance between a connection position of the noise removal capacitor and the output-side power source terminal of the capacitor module.Type: GrantFiled: October 26, 2009Date of Patent: March 18, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takeshi Matsuo, Kinya Nakatsu, Toshiya Satoh, Ken Maeda