Patents by Inventor Yasuyuki Takahata
Yasuyuki Takahata 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: 10670686Abstract: A position specifying device communicable with a transmitter supporting Bluetooth Low Energy (BLE) is provided. The position specifying device includes: a signal receiving unit configured, by using multiple antennas each having different directivity, to receive BLE radio signals transmitted from the transmitter and to measure respective receiving strengths of the BLE radio signals; and a specifying unit configured to specify a position of the transmitter by comparing the respective receiving strengths measured via each of the multiple antennas.Type: GrantFiled: October 19, 2018Date of Patent: June 2, 2020Assignee: NTT TechnoCross CorporationInventors: Nobuyuki Akanoma, Yasuyuki Takahata, Kazuo Fukaya
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Patent number: 10605144Abstract: An exhaust gas purification device for a ship including: a main path communicated with outside and a bypass path branching off from a midway portion of the main path, each of the paths serving as an exhaust gas path of an engine to be mounted in the ship. A partition plate, by which the main and bypass paths are partitioned from the upstream side to the downstream side in an exhaust gas traveling direction, extends along the exhaust gas traveling direction. The partition plate has a downstream end extended through between an exhaust gas outflow port of the purification casing and an exhaust gas outlet of the main path, and the downstream end is formed with an opening to serve as a reverse-flow prevention plate.Type: GrantFiled: May 27, 2016Date of Patent: March 31, 2020Assignee: YANMAR CO., LTD.Inventors: Ryota Kobayashi, Tsuyoshi Inoue, Tetsuya Yokoyama, Yasuyuki Takahata, Shunji Hamaoka
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Patent number: 10443469Abstract: An exhaust gas purification system includes, as an exhaust gas path of an engine to be mounted in a ship, a main path which is in communication with outside, a bypass path which branches off from a halfway portion of the main path, and a combined casing with which both the main path and the bypass path are in communication. A selective catalyst reduction device is accommodated in the combined casing at a location close to the main path. A path-switching member which switches exhaust gas moving direction is placed in a branched portion between the main path and the bypass path. A reducing agent injection body is placed in the main path between the path-switching member and the combined casing.Type: GrantFiled: October 22, 2014Date of Patent: October 15, 2019Assignee: YANMAR CO., LTD.Inventors: Tetsuya Yokoyama, Tsuyoshi Inoue, Yasuyuki Takahata, Shunji Hamaoka
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Publication number: 20190049546Abstract: A position specifying device communicable with a transmitter supporting Bluetooth Low Energy (BLE) is provided. The position specifying device includes: a signal receiving unit configured, by using multiple antennas each having different directivity, to receive BLE radio signals transmitted from the transmitter and to measure respective receiving strengths of the BLE radio signals; and a specifying unit configured to specify a position of the transmitter by comparing the respective receiving strengths measured via each of the multiple antennas.Type: ApplicationFiled: October 19, 2018Publication date: February 14, 2019Inventors: Nobuyuki AKANOMA, Yasuyuki TAKAHATA, Kazuo FUKAYA
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Publication number: 20180340458Abstract: An exhaust gas purification device for a ship 1 including: a main path 31 communicated with outside and a bypass path 32 branching off from a midway portion of the main path 31, each of the paths serving as an exhaust gas path 30 of an engine 25 to be mounted in the ship 1. A partition plate 40, by which the main and bypass paths 31, 32 are partitioned from the upstream side to the downstream side in an exhaust gas traveling direction, extends along the exhaust gas traveling direction. The partition plate 40 has a downstream end extended through between an exhaust gas outflow port 49 of the purification casing 33 and an exhaust gas outlet of the main path 31, and the downstream end is formed with an opening 401 to serve as a reverse-flow prevention plate 400.Type: ApplicationFiled: May 27, 2016Publication date: November 29, 2018Applicant: Yanmar Co., Ltd.Inventors: Ryota KOBAYASHI, Tsuyoshi INOUE, Tetsuya YOKOYAMA, Yasuyuki TAKAHATA, Shunji HAMAOKA
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Patent number: 10132223Abstract: The purpose of the present invention is to provide an exhaust purifier (1) which is capable of restoring a pressure difference (?P) and a purification rate (NOx removal efficiency) of a NOx catalyst (14) to the initial states thereof. An exhaust purifier (1) for removing particulate matter adhered to a NOx catalyst (14) by injecting pressurized air using an air injection nozzle (16) into a housing (13) of a catalyst reactor (12) in which the NOx catalyst (14) serving as a catalyst is positioned, wherein the particulate matter is removed by increasing the pressure inside the catalyst reactor (12) to a prescribed pressure (?IP) within a prescribed interval of time (t) by operating an injection valve (17) for supplying pressurized air.Type: GrantFiled: June 26, 2015Date of Patent: November 20, 2018Assignee: Yanmar Co., Ltd.Inventors: Yoshinori Fukui, Yasuyuki Takahata, Yoshihiro Yamaguchi
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Patent number: 10125651Abstract: An exhaust purification system for a ship includes a main path in communication with the outside and a bypass path branched from an intermediate portion of the main path, each serving as a discharge path for an engine installed in the ship. The main path and the bypass path are provided with and opened and closed by respective fluid operated switching valves of a normally open type.Type: GrantFiled: September 20, 2016Date of Patent: November 13, 2018Assignee: Yanmar Co., Ltd.Inventors: Yasuyuki Takahata, Tetsuya Yokoyama, Tsuyoshi Inoue
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Patent number: 9976465Abstract: The purpose of the present invention is to provide an exhaust purifier which suppresses unnecessary consumption of pressurization air so as to improve a removal rate of dust. An exhaust purifier for removing particulate matter adhered to a NOx catalyst by injecting pressurized air using an air injection nozzle into a housing of a catalyst reactor in which the NOx catalyst serving as a catalyst is positioned, wherein an injection valve of a soot blower supplying pressurized air into the housing of the catalyst reactor is opened and closed based on an exhaust gas flow rate so as to inject the pressurized air.Type: GrantFiled: June 26, 2015Date of Patent: May 22, 2018Assignee: Yanmar Co., Ltd.Inventors: Yoshinori Fukui, Toshihisa Kanda, Yasuyuki Takahata, Shunji Hamaoka
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Patent number: 9732652Abstract: An exhaust-gas purification device includes an injection nozzle provided inside an exhaust pipe and a catalyst reactor provided on a downstream side of the injection nozzle, and is configured to inject urea water from the urea water injection nozzle into exhaust gas and to reduce nitrogen oxide in the exhaust gas by a NOx catalyst contained in the catalyst reactor, where the injection nozzle is disposed to inject the urea water toward the downstream side of the flow direction of the exhaust gas, and a mixer is connected to an upstream end of the catalyst reactor, the mixer having a plurality of plate members radially disposed around the axial center of the exhaust pipe, the plate members each being formed in such a way that angles of plate surfaces of the plate member to the flow direction are different values on the upstream side and the downstream side.Type: GrantFiled: October 7, 2014Date of Patent: August 15, 2017Assignee: Yanmar Co., Ltd.Inventors: Yoshinori Fukui, Fumihiro Nishiura, Miwa Uchida, Tetsuya Yokoyama, Yasuyuki Takahata
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Publication number: 20170152783Abstract: The purpose of the present invention is to provide an exhaust purifier (1) which is capable of restoring a pressure difference (?P) and a purification rate (NOx removal efficiency) of a NOx catalyst (14) to the initial states thereof.Type: ApplicationFiled: June 26, 2015Publication date: June 1, 2017Inventors: Yoshinori Fukui, Yasuyuki Takahata, Yoshihiro Yamaguchi
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Publication number: 20170145889Abstract: The purpose of the present invention is to provide an exhaust purifier which suppresses unnecessary consumption of pressurization air so as to improve a removal rate of dust. An exhaust purifier for removing particulate matter adhered to a NOx catalyst by injecting pressurized air using an air injection nozzle into a housing of a catalyst reactor in which the NOx catalyst serving as a catalyst is positioned, wherein an injection valve of a soot blower supplying pressurized air into the housing of the catalyst reactor is opened and closed based on an exhaust gas flow rate so as to inject the pressurized air.Type: ApplicationFiled: June 26, 2015Publication date: May 25, 2017Inventors: Yoshinori Fukui, Toshihisa Kanda, Yasuyuki Takahata, Shunji Hamaoka
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Publication number: 20170009630Abstract: An exhaust purification system for a ship includes a main path in communication with the outside and a bypass path branched from an intermediate portion of the main path, each serving as a discharge path for an engine installed in the ship. The main path and the bypass path are provided with and opened and closed by respective fluid operated switching valves of a normally open type.Type: ApplicationFiled: September 20, 2016Publication date: January 12, 2017Inventors: Yasuyuki TAKAHATA, Tetsuya YOKOYAMA, Tsuyoshi INOUE
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Publication number: 20160265407Abstract: An exhaust-gas purification device includes an injection nozzle provided inside an exhaust pipe and a catalyst reactor provided on a downstream side of the injection nozzle, and is configured to inject urea water from the urea water injection nozzle into exhaust gas and to reduce nitrogen oxide in the exhaust gas by a NOx catalyst contained in the catalyst reactor, where the injection nozzle is disposed to inject the urea water toward the downstream side of the flow direction of the exhaust gas, and a mixer is connected to an upstream end of the catalyst reactor, the mixer having a plurality of plate members radially disposed around the axial center of the exhaust pipe, the plate members each being formed in such a way that angles of plate surfaces of the plate member to the flow direction are different values on the upstream side and the downstream side.Type: ApplicationFiled: October 7, 2014Publication date: September 15, 2016Inventors: Yoshinori FUKUI, Fumihiro NISHIURA, Miwa UCHIDA, Tetsuya YOKOYAMA, Yasuyuki TAKAHATA
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Publication number: 20160237870Abstract: An exhaust gas purification system includes, as an exhaust gas path of an engine to be mounted in a ship, a main path which is in communication with outside, a bypass path which branches off from a halfway portion of the main path, and a combined casing with which both the main path and the bypass path are in communication. A selective catalyst reduction device is accommodated in the combined casing at a location close to the main path. A path-switching member which switches exhaust gas moving direction is placed in a branched portion between the main path and the bypass path. A reducing agent injection body is placed in the main path between the path-switching member and the combined casing.Type: ApplicationFiled: October 22, 2014Publication date: August 18, 2016Inventors: Tetsuya Yokoyama, Tsuyoshi Inoue, Yasuyuki Takahata, Shunji Hamaoka
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Patent number: 4296621Abstract: A wire coil spring forming machine adapted for use with thick wire prevents breakage of a thin wall in a longitudinal groove in a wire guide member or quill when forming a sharp angle bent between a coil body portion and a leading end loop portion, and permits the start of the next spring leading end loop during formation of last spring trailing end loop. A pair of radially movable members move to advanced positions where they grasp the wire portion of an already formed leading end loop just in front of the longitudinal groove. Another radially movable member abuts the loop to bend it at that point without applying the bending force to the longitudinal groove. A body holder means grasps the body after the main tool forms the trailing end loop to permit severing the semifinished spring from the material wire and bending the trailing end loop.Type: GrantFiled: December 4, 1979Date of Patent: October 27, 1981Assignee: Asahi-Seiki Manufacturing Co., Ltd.Inventors: Yozo Ohdai, Yasuyuki Takahata