Patents by Inventor Junichiro Kawaguchi
Junichiro Kawaguchi 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: 11807401Abstract: An emergency deorbit device provided in a satellite flying on an orbit around the earth includes a propulsion module generating thrust for separating the satellite from the orbit, a reception unit receiving a repeat signal repeatedly sent at an interval from an sending unit of a satellite bus in the satellite, a detection unit outputting a detection signal when the reception unit does not receive the repeat signal in a set time period or when the reception unit receives a deorbit command from the sending unit or from an outside of the satellite, an activation device performing, in response to the detection signal, processing for activating the propulsion module, and a power supply device provided separately from a power supply device of the satellite bus and supplying electric power to the reception unit, the detection unit, and the activation device.Type: GrantFiled: July 27, 2018Date of Patent: November 7, 2023Assignees: IHI AEROSPACE CO., LTD., PATCHEDCONICS, LLCInventors: Kengo Yamamoto, Junichiro Kawaguchi
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Patent number: 11679901Abstract: To provide a sheet-like optical device capable of selectively emitting light whose optical path has a changed orientation. An optical device includes a first sheet and a second sheet. The first sheet is configured to be electrically switchable between a first state in which the first sheet extends along an in-plane direction orthogonal to a thickness direction and has transparency in the thickness direction, and a second state in which the first sheet has lower transparency in the thickness direction than the transparency in the first state. The second sheet has a prism surface on which an inclined surface inclined with respect to the in-plane direction is arranged along the in-plane direction, the second sheet facing the first sheet in the thickness direction.Type: GrantFiled: March 30, 2018Date of Patent: June 20, 2023Assignee: Japan Aerospace Exploration AgencyInventors: Junichiro Kawaguchi, Osamu Mori, Toshihiro Chujo, Hirokazu Ishida
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Publication number: 20230049965Abstract: [Problem] When configuring a device for storing and supplying fluid, each components such as vessels, valves/pipes and the like, are placed independently outside a vessel that stores the fluid, and even if these components are small, the volume of the area between the components cannot be effectively used because each of them occupies the surrounding area, and when the total size of the device is limited, it is difficult to ensure a sufficient volume of the vessel that stores the fluid. The present invention provides a design for a configuration of a mechanism consisting of components such as valves/pipes and the like, that functions for storing and exhausting the fluid inside the storage vessel to innovatively improve the volume usage efficiency of the device.Type: ApplicationFiled: June 10, 2019Publication date: February 16, 2023Inventor: Junichiro Kawaguchi
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Publication number: 20210253278Abstract: An emergency deorbit device provided in a satellite flying on an orbit around the earth includes a propulsion module generating thrust for separating the satellite from the orbit, a reception unit receiving a repeat signal repeatedly sent at an interval from an sending unit of a satellite bus in the satellite, a detection unit outputting a detection signal when the reception unit does not receive the repeat signal in a set time period or when the reception unit receives a deorbit command from the sending unit or from an outside of the satellite, an activation device performing, in response to the detection signal, processing for activating the propulsion module, and a power supply device provided separately from a power supply device of the satellite bus and supplying electric power to the reception unit, the detection unit, and the activation device.Type: ApplicationFiled: July 27, 2018Publication date: August 19, 2021Applicants: IHI Aerospace Co., Ltd., Patchedconics, LLCInventors: Kengo YAMAMOTO, Junichiro KAWAGUCHI
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Patent number: 10883449Abstract: Provided is a jet system capable of regulating a pressure of a jet substance without using any high-pressure gas supply subsystem. In a storage section for storing therein a jet substance such as fuel or oxidizer, a pressurizing substance such as liquefied gas is stored in addition to the jet substance, to enable the jet substance to be supplied from the storage section according to pressurization from the pressurizing substance. A jet operation is performed while an internal pressure of the storage section lowered along with discharge of the jet substance therefrom is at least partially recovered by at least a part of the pressurizing substance vaporized in the storage section.Type: GrantFiled: March 22, 2017Date of Patent: January 5, 2021Assignee: Japan Aerospace Exploration AgencyInventors: Osamu Mori, Junichiro Kawaguchi, Toshihiro Chujo
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Patent number: 10870502Abstract: A vapor jet system to continuously jet vapors while suppressing cavitation. One vapor jet system includes a liquid storage part for separately storing two or more kinds of mutually insoluble liquids; a jet orifice; and a jet control part. Jetting the vapors is from a state where pressure in the space storing the vapors in the liquid storage part is higher than the saturated vapor pressure in any of the two or more kinds of liquids. Alternatively, a vapor jet system can include a fluid storage part storing one kind of liquid and at least one kind of inactive gas having a composition different from the liquid; a similar jet orifice; and a similar jet control part. Jetting the vapors and inactive gas(es) is (are) from a state where pressure in a vapor storing space in the fluid storage part is higher than the saturated vapor pressure in the liquid.Type: GrantFiled: May 11, 2015Date of Patent: December 22, 2020Assignee: Japan Aerospace Exploration AgencyInventors: Junichiro Kawaguchi, Osamu Mori, Takayuki Yamamoto, Norizumi Motooka, Toshihiro Chujo
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Publication number: 20200115069Abstract: [Object] To provide a sheet-like optical device capable of selectively emitting light whose optical path has a changed orientation. [Solving Means] An optical device includes a first sheet and a second sheet. The first sheet is configured to be electrically switchable between a first state in which the first sheet extends along an in-plane direction orthogonal to a thickness direction and has transparency in the thickness direction, and a second state in which the first sheet has lower transparency in the thickness direction than the transparency in the first state. The second sheet has a prism surface on which an inclined surface inclined with respect to the in-plane direction is arranged along the in-plane direction, the second sheet facing the first sheet in the thickness direction.Type: ApplicationFiled: March 30, 2018Publication date: April 16, 2020Inventors: Junichiro KAWAGUCHI, Osamu MORI, Toshihiro CHUJO, Hirokazu ISHIDA
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Patent number: 10605203Abstract: A heat exchanger generally employs a method for supplying liquid having critical pressure or higher or high pressure in order to suppress boiling. However, gas obtained by a evaporator behind the heat exchanger has relatively low pressure, and therefore supplying the liquid to the heat exchanger requires a system for converting an energy form of the obtained gas into kinetic energy or electrical energy, and increasing the pressure by a mechanical pump. Thus, the complicated system involving an efficiency loss is only solution, and it is difficult to achieve simplification of a system or reduction in the weight of a propellant supply device in a moving body, specifically, a flying object.Type: GrantFiled: September 25, 2014Date of Patent: March 31, 2020Assignee: PATCHED CONICS, LLC.Inventor: Junichiro Kawaguchi
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Patent number: 10577132Abstract: A torque generation system includes: a plurality of solar array panels and/or solar array panel divisions; and a torque controller configured to control an electricity generation ratio of each of the plurality of solar array panels and/or solar array panel divisions to generate torque.Type: GrantFiled: May 30, 2018Date of Patent: March 3, 2020Assignee: Japan Aerospace Exploration AgencyInventors: Osamu Mori, Junichiro Kawaguchi, Yoji Shirasawa, Toshihiro Chujo, Kosuke Akatsuka
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Publication number: 20180290769Abstract: A torque generation system includes: a plurality of solar array panels and/or solar array panel divisions; and a torque controller configured to control an electricity generation ratio of each of the plurality of solar array panels and/or solar array panel divisions to generate torque.Type: ApplicationFiled: May 30, 2018Publication date: October 11, 2018Applicant: Japan Aerospace Exploration AgencyInventors: Osamu MORI, Junichiro KAWAGUCHI, Yoji SHIRASAWA, Toshihiro CHUJO, Kosuke AKATSUKA
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Patent number: 10050799Abstract: It is a problem to be solved to provide Electric power control systems and methods which do not require one-to-one communications in both directions, in which the communications traffic does not rapidly increase even if the number of electric power consumption elements increases and which have good expandability. In addition, it is also a problem to be solved to provide information transfer capability control systems and methods which can be worked by the similar principles. In over to solve the problems, information representing an indication value for adjusting total consumed electric power which is a function of the difference between a current value and a reference value of the total consumed electric power in the group is transmitted by broadcast.Type: GrantFiled: January 27, 2015Date of Patent: August 14, 2018Assignee: PATCHED CONICS, LLC.Inventor: Junichiro Kawaguchi
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Publication number: 20170276093Abstract: Provided is a jet system capable of regulating a pressure of a jet substance without using any high-pressure gas supply subsystem. In a storage section for storing therein a jet substance such as fuel or oxidizer, a pressurizing substance such as liquefied gas is stored in addition to the jet substance, to enable the jet substance to be supplied from the storage section according to pressurization from the pressurizing substance. A jet operation is performed while an internal pressure of the storage section lowered along with discharge of the jet substance therefrom is at least partially recovered by at least a part of the pressurizing substance vaporized in the storage section.Type: ApplicationFiled: March 22, 2017Publication date: September 28, 2017Applicant: Japan Aerospace Exploration AgencyInventors: Osamu MORI, Junichiro KAWAGUCHI, Toshihiro CHUJO
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Publication number: 20170167442Abstract: A heat exchanger generally employs a method for supplying liquid having critical pressure or higher or high pressure in order to suppress boiling. However, gas obtained by a evaporator behind the heat exchanger has relatively low pressure, and therefore supplying the liquid to the heat exchanger requires a system for converting an energy form of the obtained gas into kinetic energy or electrical energy, and increasing the pressure by a mechanical pump. Thus, the complicated system involving an efficiency loss is only solution, and it is difficult to achieve simplification of a system or reduction in the weight of a propellant supply device in a moving body, specifically, a flying object.Type: ApplicationFiled: September 25, 2014Publication date: June 15, 2017Applicant: Patched Conics, LLC.Inventor: Junichiro KAWAGUCHI
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Publication number: 20170073089Abstract: A vapor jet system to continuously jet vapors while suppressing cavitation. One vapor jet system includes a liquid storage part for separately storing two or more kinds of mutually insoluble liquids; a jet orifice; and a jet control part. Jetting the vapors is from a state where pressure in the space storing the vapors in the liquid storage part is higher than the saturated vapor pressure in any of the two or more kinds of liquids. Alternatively, a vapor jet system can include a fluid storage part storing one kind of liquid and at least one kind of inactive gas having a composition different from the liquid; a similar jet orifice; and a similar jet control part. Jetting the vapors and inactive gas(es) is (are) from a state where pressure in a vapor storing space in the fluid storage part is higher than the saturated vapor pressure in the liquid.Type: ApplicationFiled: May 11, 2015Publication date: March 16, 2017Applicant: Japan Aerospace Exploration AgencyInventors: Junichiro KAWAGUCHI, Osamu MORI, Takayuki YAMAMOTO, Norizumi MOTOOKA, Toshihiro CHUJO
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Patent number: 9567875Abstract: A power generation apparatus, a power generation method, a decomposition-gas boiler, and a decomposition-gas turbine with which nitrous oxide may be used as an environmentally friendly energy source. A fuel gas including nitrous oxide (N2O) is supplied to a decomposition reactor (22) in which a catalyst (21) for decomposing nitrous oxide is disposed. Steam is generated by a decomposition-gas boiler by heat recovery from decomposition gas (N2, O2) generated by decomposing the nitrous oxide, the steam generated by the decomposition-gas boiler is used to drive the rotation of a steam turbine to obtain motive power, and the motive power is subsequently used to drive a generator to obtain electrical power. Alternatively, the decomposition gas (N2, O2) generated by decomposing the nitrous oxide is used to drive the rotation of a decomposition-gas turbine to obtain motive power.Type: GrantFiled: February 23, 2012Date of Patent: February 14, 2017Assignee: SHOWA DENKO K.K.Inventors: Shigehiro Chaen, Junichiro Kawaguchi, Hiroto Habu, Yoshitsugu Sone
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Publication number: 20170036784Abstract: A vapor jet system includes a container for storing a sublimable solid, the container having a vapor discharge port for discharging vapor generated by sublimation of the sublimable solid; a member having an opening for jetting out the vapor to the outside of the vapor jet system; a vapor flow path between the vapor discharge port and the opening; and a filter for preventing passage of the sublimable solid and allowing the vapor to pass through, the filter being provided to the vapor flow path.Type: ApplicationFiled: April 16, 2015Publication date: February 9, 2017Applicant: Japan Aerospace Exploration AgencyInventors: Junichiro KAWAGUCHI, Osamu MORI, Takayuki YAMAMOTO, Toshihiro CHUJO, Norizumi MOTOOKA
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Publication number: 20170010595Abstract: It is a problem to be solved to provide Electric power control systems and methods which do not require one-to-one communications in both directions, in which the communications traffic does not rapidly increase even if the number of electric power consumption elements increases and which have good expandability. In addition, it is also a problem to be solved to provide information transfer capability control systems and methods which can be worked by the similar principles. In over to solve the problems, information representing an indication value for adjusting total consumed electric power which is a function of the difference between a current value and a reference value of the total consumed electric power in the group is transmitted by broadcast.Type: ApplicationFiled: January 27, 2015Publication date: January 12, 2017Applicant: PATCHED CONICS, LLC.Inventor: Junichiro Kawaguchi
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Publication number: 20160376032Abstract: A torque generation system includes: a plurality of solar array panels and/or solar array panel divisions; and a torque controller configured to control an electricity generation ratio of each of the plurality of solar array panels and/or solar array panel divisions to generate torque.Type: ApplicationFiled: May 10, 2016Publication date: December 29, 2016Applicant: Japan Aerospace Exploration AgencyInventors: Osamu MORI, Junichiro KAWAGUCHI, Yoji SHIRASAWA, Toshihiro CHUJO, Kosuke AKATSUKA
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Publication number: 20150007568Abstract: A power generation apparatus, a power generation method, a decomposition-gas boiler, and a decomposition-gas turbine with which nitrous oxide may be used as an environmentally friendly energy source. A fuel gas including nitrous oxide (N2O) is supplied to a decomposition reactor (22) in which a catalyst (21) for decomposing nitrous oxide is disposed. Steam is generated by a decomposition-gas boiler by heat recovery from decomposition gas (N2, O2) generated by decomposing the nitrous oxide, the steam generated by the decomposition-gas boiler is used to drive the rotation of a steam turbine to obtain motive power, and the motive power is subsequently used to drive a generator to obtain electrical power. Alternatively, the decomposition gas (N2, O2) generated by decomposing the nitrous oxide is used to drive the rotation of a decomposition-gas turbine to obtain motive power.Type: ApplicationFiled: February 23, 2012Publication date: January 8, 2015Applicant: SHOWA DENKO K.K.Inventors: Shigehiro Chaen, Junichiro Kawaguchi, Hiroto Habu, Yoshitsugu Sone
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Patent number: 8769923Abstract: Disclosed is a liquid-fuel storage vessel for use in a vapor jet system to store liquid fuel, wherein the vapor jet system is adapted to jet the fuel in a state after being vaporized inside the liquid-fuel storage vessel, outside the liquid-fuel storage vessel, to obtain a thrust. The liquid-fuel storage vessel comprises: a hollow tank for storing the liquid fuel, wherein the tank has an ejection port for ejecting the vaporized fuel, outside the liquid-fuel storage vessel therethrough; a heating device for heating the tank; and a porous metal formed to have a plurality of interconnected cells and provided inside the tank, wherein at least a part of the liquid fuel is held in the cells of the porous metal, and heat energy given from the heating device to the tank is transferred to the liquid fuel through the porous metal to cause vaporization of at least a part of the liquid fuel. The liquid-fuel storage vessel of the present invention can obtain a stable thrust level and ensure spacecraft attitude control.Type: GrantFiled: March 10, 2009Date of Patent: July 8, 2014Assignee: Japan Aerospace Exploration AgencyInventors: Takayuki Yamamoto, Osamu Mori, Junichiro Kawaguchi