Patents by Inventor Masaki Nagaoka
Masaki Nagaoka 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: 20210148317Abstract: Disclosed is a fuel injection valve in which a movable core and a fixed core are enclosed in a cylindrical body. The cylindrical body has an annular groove formed therein, on an outer circumferential side of a region in which the movable core and the fixed core are opposed to each other, to define a thin portion of small wall thickness. In a cross section taken along a center axis of the fuel injection valve, the thin portion has curved line sections on both end sides thereof in a direction along the center axis such that the curved line sections respectively connect a bottom of the annular groove to side edges of the annular groove by curved lines. The curved line sections are provided over a range of larger dimension, from the respective side edges in the direction along the center axis, than a depth dimension of the annular groove.Type: ApplicationFiled: March 26, 2018Publication date: May 20, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Shigeo KUBA, Akihiro YAMAZAKI, Takahiro SAITO, Masaki NAGAOKA
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Publication number: 20210148316Abstract: This fuel injection valve is provided with: a valve seat (15b) and a valve body (27c), which cooperate to open and close a fuel passage; a valve seat member (15) having formed thereon the valve seat (15b) and a guide surface (15c) which guides the valve body (27c); and a cylindrical body (5) having the valve seat member (15) press-fitted in the front end-side end thereof. The valve seat member (15) is configured so that the press-fit section (15f) thereof which is press-fitted in the cylindrical body (5) is provided at a position offset toward the base end of the cylindrical body (5) relative to both the valve seat (15b) and the guide surface (15c) in the direction of the center axis (1x) of the fuel injection valve.Type: ApplicationFiled: March 26, 2018Publication date: May 20, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Atsushi NAKAI, Masaki NAGAOKA, Shigeo KUBA
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Publication number: 20200400112Abstract: An object of the present invention is to provide a fuel injection valve that realizes atomization while suppressing spread of a spray. A fuel injection valve includes: a valve body and a valve seat that cooperate to open and close a fuel passage; a swirl imparting chamber that is arranged on a downstream side of an opening and closing portion of the fuel passage by the valve body and the valve seat, and imparts a swirling velocity to fuel; a communication passage arranged on an upstream side of the swirl imparting chamber and connected to the swirl imparting chamber; and fuel injection holes and that are open at a bottom surface of the swirl imparting chamber and injects fuel imparted with the swirling velocity in a swirl passage to an outside, the fuel injection holes and configured such that cross-sectional areas of the fuel injection holes and increase from the inlet to the outlet.Type: ApplicationFiled: September 25, 2018Publication date: December 24, 2020Inventors: Hiroshi MUKAI, Mitsuhiro MATSUZAWA, Akihiro YAMAZAKI, Masaki NAGAOKA, Takahiro SAITO, Eiji ISHII, Taisuke SUGII, Kazuki YOSHIMURA
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Patent number: 10662914Abstract: Disclosed is a fuel injection valve comprising: a fuel injection orifice provided in a downstream side of a valve seat which a valve body moves toward and away from; a swirl chamber having a swirl passage formed around the entry opening of the fuel injection orifice; and a transverse passage whose end is opened in an inner circumferential wall of the swirl chamber in order to provide a fuel into the swirl chamber, wherein a center of the entry opening is shifted from a first position where the velocity component in the swirl direction of the fuel can be maximized to a second position where the velocity component in the swirl direction is reduced, and where a velocity component in a center axis direction of the fuel injection orifice is enhanced. Thereby, it is possible to easily adjust a fuel injection amount and a spray angle.Type: GrantFiled: February 5, 2016Date of Patent: May 26, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masaki Nagaoka, Nobuaki Kobayashi, Ryuta Kinoshita
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Publication number: 20200109688Abstract: A fuel-injection valve provided with a fuel filter (13) in a fuel supply unit into which fuel flows, wherein: the fuel filter (13) is provided with a filtering part (X1) that is disposed along the circumferential direction of the fuel filter (13) and along the central axis line (13x) thereof and that is provided with a net-like member (13c) which captures foreign objects mixed in with fuel flowing from the radially inner side to the radially outer side of the fuel filter (13); and the fuel filter (13) has, on the upstream side from the filtering part (X1), first fuel swirl generation units (13d-1, 13d-2, 13d-4) which generate swirl in the fuel that flows down along the inner circumferential surface of the filtering part (X1).Type: ApplicationFiled: March 26, 2018Publication date: April 9, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Eiji TAMURA, Akihiro YAMAZAKI, Takahiro SAITO, Masaki NAGAOKA
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Publication number: 20180066620Abstract: Disclosed is a fuel injection valve comprising: a fuel injection orifice provided in a downstream side of a valve seat which a valve body moves toward and away from; a swirl chamber having a swirl passage formed around the entry opening of the fuel injection orifice; and a transverse passage whose end is opened in an inner circumferential wall of the swirl chamber in order to provide a fuel into the swirl chamber, wherein a center of the entry opening is shifted from a first position where the velocity component in the swirl direction of the fuel can be maximized to a second position where the velocity component in the swirl direction is reduced, and where a velocity component in a center axis direction of the fuel injection orifice is enhanced. Thereby, it is possible to easily adjust a fuel injection amount and a spray angle.Type: ApplicationFiled: February 5, 2016Publication date: March 8, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masaki NAGAOKA, Nobuaki KOBAYASHI, Ryuta KINOSHITA
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Patent number: 9599146Abstract: Provided is a vehicle including a vehicle body. The vehicle includes an operating member to be pressed so that the operating member performs an operation, and a wire having a first end and a second end. The first end is closer than the second end to the operating member. The vehicle includes a wire cover slidably covering the wire and slidable relative to the wire. The vehicle includes an actuating section that supports a first portion of the wire cover and that moves the wire cover in a direction away from the first end of the wire in accordance with the operation. The vehicle includes a non-actuating section supporting the first end so that an operation amount of the first end with respect to the vehicle body is smaller than an operation amount of the actuating section with respect to the vehicle body when the operating member performs the operation.Type: GrantFiled: April 23, 2015Date of Patent: March 21, 2017Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Masaki Nagaoka, Yasushi Aoki
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Publication number: 20150377281Abstract: Provided is a vehicle including a vehicle body. The vehicle includes an operating member to be pressed so that the operating member performs an operation, and a wire having a first end and a second end. The first end is closer than the second end to the operating member. The vehicle includes a wire cover slidably covering the wire and slidable relative to the wire. The vehicle includes an actuating section that supports a first portion of the wire cover and that moves the wire cover in a direction away from the first end of the wire in accordance with the operation. The vehicle includes a non-actuating section supporting the first end so that an operation amount of the first end with respect to the vehicle body is smaller than an operation amount of the actuating section with respect to the vehicle body when the operating member performs the operation.Type: ApplicationFiled: April 23, 2015Publication date: December 31, 2015Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Masaki NAGAOKA, Yasushi AOKI
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Patent number: 9048667Abstract: A suppressed noise cell controller includes, corresponding to a number of cell packs, a plurality of ICs each having a voltage detecting circuit detecting voltages of respective cells of a cell pack in which four cells are connected in series, a switch control circuit controlling conduction and a blocking operation of a plurality of switch elements connected in parallel to the respective cells via capacity adjusting resistors, terminal LIN1 for inputting control information, terminal LIN2 for outputting control information, terminal Vcc and GND terminal, and terminal LIN2 of a higher-order IC and terminal LIN1 of a lower-order IC are daisy chain connected. The Vcc terminal of each IC is connected to a positive electrode of a higher-order cell among cells constituting a corresponding cell pack via a noise eliminating inductor, and the GND terminal is coupled directly to Vcc of the lower-order IC. Noise isn't superposed on LIN1 or LIN2.Type: GrantFiled: January 10, 2012Date of Patent: June 2, 2015Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masaki Nagaoka, Akihiko Kudo, Mutsumi Kikuchi, Kenichiro Tsuru, Tatsumi Yamauchi, Akihiko Emori
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Patent number: 8760168Abstract: An assembled battery total voltage detection circuit includes a main control circuit, a divider resistor connected between a plus terminal and a minus terminal of an assembled battery insulated from the main control circuit, and a differential amplifier circuit that amplifies voltage divided by the divider resistor. A constant electric potential relative to a ground of the main control circuit is applied to a midpoint of the divider resistor. The main control circuit measures the voltage divided by the divider resistor via the differential amplifier circuit.Type: GrantFiled: February 19, 2009Date of Patent: June 24, 2014Assignees: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.Inventors: Akihiko Kudo, Mutsumi Kikuchi, Masaki Nagaoka
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Patent number: 8487590Abstract: A cell controller capable of ensuring high safety even when a short occurs among voltage detecting lines without causing increased costs is provided. The cell controller 10 includes a unit cell voltage detecting section 7 to detect a voltage of each unit cell 1 constituting a battery group through each voltage detecting line and a SOC adjusting circuit for adjusting a SOC of each unit cell 1 having resistors 2 for SOC adjustment, switching elements 6, and a bypass control section 8 to exercise on/off control on the switching elements 6. Each resistor 2 is connected in series to each voltage detecting line and the unit cell voltage detecting section 7 to detect a voltage of each unit cell 1 through each of the resistors 2.Type: GrantFiled: March 25, 2008Date of Patent: July 16, 2013Assignee: Hitachi Vehicle Energy, LtdInventors: Akihiko Kudo, Masaki Nagaoka, Kenichiro Tsuru, Mutsumi Kikuchi, Tatsumi Yamauchi, Akihiko Emori
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Patent number: 8264204Abstract: A cell controller with excellent reliability in which noise and soon are suppressed is provided. The cell controller includes, corresponding to the number of cell packs, a plurality of ICs each having a voltage detecting circuit detecting voltages of respective cells of a cell pack in which four cells are connected in series, a switch control circuit controlling conduction and a blocking operation of a plurality of switch elements connected in parallel to the respective cells via capacity adjusting resistors, a LIN1 terminal for inputting control information, a LIN2 terminal for outputting control information, a Vcc terminal and a GND terminal, and a LIN2 terminal of a higher-order IC and a LIN1 terminal of a lower-order IC are connected in a daisy chain.Type: GrantFiled: January 9, 2008Date of Patent: September 11, 2012Assignee: Hitachi Vehicle Energy, Ltd.Inventors: Masaki Nagaoka, Akihiko Kudo, Mutsumi Kikuchi, Kenichiro Tsuru, Tatsumi Yamauchi, Akihiko Emori
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Publication number: 20120141848Abstract: A suppressed noise cell controller includes, corresponding to a number of cell packs, a plurality of ICs each having a voltage detecting circuit detecting voltages of respective cells of a cell pack in which four cells are connected in series, a switch control circuit controlling conduction and a blocking operation of a plurality of switch elements connected in parallel to the respective cells via capacity adjusting resistors, terminal LIN1 for inputting control information, terminal LIN2 for outputting control information, terminal Vcc and GND terminal, and terminal LIN2 of a higher-order IC and terminal LIN1 of a lower-order IC are daisy chain connected. The Vcc terminal of each IC is connected to a positive electrode of a higher-order cell among cells constituting a corresponding cell pack via a noise eliminating inductor, and the GND terminal is coupled directly to Vcc of the lower-order IC. Noise isn't superposed on LIN1 or LIN2.Type: ApplicationFiled: January 10, 2012Publication date: June 7, 2012Applicant: HITACHI VEHICLE ENERGY, LTD.Inventors: Masaki Nagaoka, Akihiko Kudo, Mutsumi Kikuchi, Kenichiro Tsuru, Tatsumi Yamauchi, Akihiko Emori
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Patent number: 7952327Abstract: The present invention provides an assembled battery total voltage detection and leak detection apparatus which is reduced in size and is reduced in manufacturing costs. Detection of a total voltage is performed at a measurement time of a total voltage of an assembled battery 1 by connecting an output of a positive electrode resistance voltage dividing circuit composed of resistors 9 and 10 to + input of a differential amplifier 20 and connecting an output of a negative electrode resistance voltage dividing circuit composed of resistors 12 and 11 to ? input of the amplifier 20, and it performs leak detection at a leak detection time by connecting an output of a positive electrode resistance voltage dividing circuit to + input of the amplifier 20 and connecting + input of the amplifier 20 to the minus input of the differential amplifier 20 to measure an output voltage of the amplifier 20.Type: GrantFiled: April 17, 2007Date of Patent: May 31, 2011Assignee: Hitachi Vehicle Energy, Ltd.Inventors: Akihiko Kudo, Masaki Nagaoka, Akihiko Emori, Takahiro Kawata
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Publication number: 20090243621Abstract: An assembled battery total voltage detection circuit includes a main control circuit, a divider resistor connected between a plus terminal and a minus terminal of an assembled battery insulated from the main control circuit, and a differential amplifier circuit that amplifies voltage divided by the divider resistor. A constant electric potential relative to a ground of the main control circuit is applied to a midpoint of the divider resistor. The main control circuit measures the voltage divided by the divider resistor via the differential amplifier circuit.Type: ApplicationFiled: February 19, 2009Publication date: October 1, 2009Applicants: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.Inventors: Akihiko KUDO, Mutsumi KIKUCHI, Masaki NAGAOKA
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Publication number: 20090021222Abstract: A cell controller capable of ensuring high safety even when a short occurs among voltage detecting lines without causing increased costs is provided. The cell controller 10 includes a unit cell voltage detecting section 7 to detect a voltage of each unit cell 1 constituting a battery group through each voltage detecting line and a SOC adjusting circuit for adjusting a SOC of each unit cell 1 having resistors 2 for SOC adjustment, switching elements 6, and a bypass control section 8 to exercise on/off control on the switching elements 6. Each resistor 2 is connected in series to each voltage detecting line and the unit cell voltage detecting section 7 to detect a voltage of each unit cell 1 through each of the resistors 2.Type: ApplicationFiled: March 25, 2008Publication date: January 22, 2009Applicant: HITACHI VEHICLE ENERGY, LTD.Inventors: Akihiko KUDO, Masaki NAGAOKA, Kenichiro TSURU, Mutsumi KIKUCHI, Tatsumi YAMAUCHI, Akihiko EMORI
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Publication number: 20080284375Abstract: A cell controller with excellent reliability in which noise and soon are suppressed is provided. The cell controller includes, corresponding to the number of cell packs, a plurality of ICs each having a voltage detecting circuit detecting voltages of respective cells of a cell pack in which four cells are connected in series, a switch control circuit controlling conduction and a blocking operation of a plurality of switch elements connected in parallel to the respective cells via capacity adjusting resistors, a LIN1 terminal for inputting control information, a LIN2 terminal for outputting control information, a Vcc terminal and a GND terminal, and a LIN2 terminal of a higher-order IC and a LIN1 terminal of a lower-order IC are connected in a daisy chain.Type: ApplicationFiled: January 9, 2008Publication date: November 20, 2008Applicant: HITACHI VEHICLE ENERGY, LTD.Inventors: Masaki Nagaoka, Akihiko Kudo, Mutsumi Kikuchi, Kenichiro Tsuru, Tatsumi Yamauchi, Akihiko Emori
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Publication number: 20080054907Abstract: The present invention provides an assembled battery total voltage detection and leak detection apparatus which is reduced in size and is reduced in manufacturing costs. Detection of a total voltage is performed at a measurement time of a total voltage of an assembled battery 1 by connecting an output of a positive electrode resistance voltage dividing circuit composed of resistors 9 and 10 to + input of a differential amplifier 20 and connecting an output of a negative electrode resistance voltage dividing circuit composed of resistors 12 and 11 to ? input of the amplifier 20, and it performs leak detection at a leak detection time by connecting an output of a positive electrode resistance voltage dividing circuit to + input of the amplifier 20 and connecting + input of the amplifier 20 to the minus input of the differential amplifier 20 to measure an output voltage of the amplifier 20.Type: ApplicationFiled: April 17, 2007Publication date: March 6, 2008Applicant: HITACHI VEHICLE ENERGY, LTD.Inventors: Akihiko Kudo, Masaki Nagaoka, Akihiko Emori, Takahiro Kawata
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Publication number: 20010045459Abstract: A POS system issues a receipt and prints messages, etc. including variable information for each transaction or for each customer on a receipt. The POS system is provided with an output information defining file to define output information such as promotion information, etc. In the output information defining file, a message information having an area to set, for example, a price reduction value (variable information) is defined. The output information is then read as required at the time of printing the receipt and a message is printed on the receipt by adding variable information.Type: ApplicationFiled: March 17, 1999Publication date: November 29, 2001Inventors: TAKAMASA KONDO, MASAKI NAGAOKA
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Patent number: 5582950Abstract: A process for producing a wherein an aminium salt infrared light absorber and a positive charge control agent are used in combination while preventing a mutual reaction therebetween. In this toner, the physical contact of the aminium salt compound with the positive charge control agent is avoided (e.g., by separately adding them to respective two separated phases of a binder resin), or alternatively use is made of such a combination of confounds as will not cause a mutual reaction (e.g., a common anion is used).Type: GrantFiled: April 17, 1995Date of Patent: December 10, 1996Assignee: Fujitsu LimitedInventors: Yoshimichi Katagiri, Kazuyuki Kishimoto, Kazuhiko Kido, Yasufumi Nakamura, Hidenori Fujioka, Masahiro Nishihata, Kazuya Hamada, Masakazu Kinoshita, Hitoshi Kusaba, Ikuya Yamabata, Tetsuro Baba, Haruo Kuroda, Yuzo Horikoshi, Masaki Nagaoka, Yumi Fujisaki, Yuko Ohyama, Eiji Sakurai