Patents by Inventor Akihiro Yamazaki
Akihiro Yamazaki 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: 20200182212Abstract: Provided is a fuel injection valve which can be easily processed and can realize sufficient atomization while suppressing spreading of spray.Type: ApplicationFiled: September 1, 2017Publication date: June 11, 2020Inventors: Mitsuhiro MATSUZAWA, Kazuki YOSHIMURA, Eiji ISHII, Akihiro YAMAZAKI, Takahiro SAITO, Nobuaki KOBAYASHI
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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: 20190376478Abstract: This fuel injection valve is provided with a needle having a valve body (27c) and a rod part (27b) of which one end is bonded by welding to the valve body (27c). A contact portion (81) between the rod part (27b) and the valve body (27c) is disposed nearer to a valve shaft center (27x) than is a weld-penetration portion (80) created by the weld-bonding of the rod part (27b) and the valve body (27c), and a non-welded portion (82) is provided between the contact portion (81) and the weld-penetration portion (80).Type: ApplicationFiled: August 9, 2017Publication date: December 12, 2019Inventors: Akihiro YAMAZAKI, Takahiro SAITO, Nobuaki KOBAYASHI
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Patent number: 10344726Abstract: The purpose of the present invention is to provide a fuel injection valve that can achieve sufficient atomization even if the spray angle is narrow.Type: GrantFiled: September 14, 2015Date of Patent: July 9, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Kazuki Yoshimura, Mitsuhiro Matsuzawa, Eiji Ishii, Akihiro Yamazaki, Takahiro Saito, Nobuaki Kobayashi
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Publication number: 20190170102Abstract: An object of the invention is to achieve sufficient atomization, while preventing a spray from spreading. A fuel injection valve includes a plurality of swirl fuel injection passages. Each of the swirl fuel injection passages includes a swirl chamber, a swirl chamber introduction passage, and an orifice and imparts a swirling force to fuel to thereby inject the fuel outside. A rectangular coordinate system is imagined on an imaginary plane. The rectangular coordinate system has a center of an inlet opening surface of the orifice as an origin and has an X-axis extending in parallel with a centerline of the swirl chamber introduction passage and being positive in a direction from an upstream side toward a downstream side of the swirl chamber introduction passage and a Y-axis extending perpendicularly to the X-axis and being positive in a direction away from the centerline.Type: ApplicationFiled: January 20, 2017Publication date: June 6, 2019Inventors: Mitsuhiro MATSUZAWA, Kazuki YOSHIMURA, Eiji ISHll, Akihiro YAMAZAKI, Takahiro SAITO, Nobuaki KOBAYASHI
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Publication number: 20190101087Abstract: In the present invention, two side-section side surfaces and each horizontal passage run along a fuel flow direction and have a linear section, and an end-section side surface formed between the two side-section side surfaces and forming an upstream-side end portion has a curved section connected to the side-section side surfaces and. When a fuel inlet and the horizontal passages are projected onto a plane perpendicular to a valve axial center, a projected line of the linear section of each of the horizontal passages extends to a place intersecting a projected line of the opening edge of the fuel inlet, and the upstream-side end portion of each of the horizontal passages extends toward the inside of the opening edge.Type: ApplicationFiled: February 16, 2017Publication date: April 4, 2019Inventors: Takahiro SAITO, Nobuaki KOBAYASHI, Akihiro YAMAZAKI, Eiji TAMURA
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Patent number: 10233884Abstract: The present invention includes a bobbin having a winding part around which a coil winding is wound, a terminal extending from the bobbin in the axial direction of the bobbin, and a wrapping part which is provided to the terminal and in which a terminal lead wire pulled out from a coil part that is wound around the winding part is wrapped and fused. The terminal lead wire wired between the bobbin and the wrapping part in a state of being in contact with the surface of the terminal. The peripheries of the bobbin, the wiring part of the terminal lead wire and the wrapping part are covered with resin.Type: GrantFiled: August 3, 2016Date of Patent: March 19, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Eiji Tamura, Nobuaki Kobayashi, Takahiro Saito, Akihiro Yamazaki
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Publication number: 20190078543Abstract: Electromagnetic solenoid has movable core having end surface that is formed between inner circumferential surface and outer circumferential surface of movable core; and fixed core having end surface that is formed between inner circumferential surface and outer circumferential surface of fixed core and faces the end surface of movable core. Ring-shaped protruding portion is formed at least either one of the end surface of the movable core or the end surface of the fixed core. Protruding portion is provided at a position that is shifted to a radially inner circumferential side of the end surface. A length between apex and inner circumferential edge of protruding portion is shorter than a length between the apex and an outer circumferential edge of protruding portion.Type: ApplicationFiled: February 16, 2017Publication date: March 14, 2019Inventors: Akihiro YAMAZAKI, Takahiro SAITO, Nobuaki KOBAYASHI, Akiyasu MIYAMOTO, Yoshihito YASUKAWA
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Publication number: 20180363612Abstract: There is provided a solenoid pipe including a pipe formed of a ferromagnetic material containing 15 mass % or more to 18 mass % or less of Cr, an electromagnetic coil, and a valve body. A part of the pipe includes a reform portion, and the reform portion has a composition in which a component of the ferromagnetic material is mixed with a component of a Ni-containing material. e/d which is a ratio of a maximum deformation amount e of an outer circumferential surface side of the reform portion of the pipe with respect to a thickness d of the pipe near the reform portion is 0.5 or less, and c/d which is a ratio of a maximum deformation amount c of an inner circumferential surface side of the reform portion of the pipe with respect to the thickness d of the pipe is 0.5 or less. Accordingly, it is possible to obtain a locally feeble magnetized pipe with high dimensional accuracy and the solenoid valve using the pipe.Type: ApplicationFiled: December 24, 2015Publication date: December 20, 2018Applicant: Hitachi Automotive Systems, Ltd.Inventors: Shinya OKAMOTO, Xudong ZHANG, Nobuaki KOBAYASHI, Takahiro SAITO, Akihiro YAMAZAKI
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Publication number: 20180306155Abstract: It is an object of the present invention to provide a fuel injection valve that can increase the collision force of the fuel with respect to the injection hole inner wall surface and which can realize a sufficient atomization. In an imaginary plane orthogonal to a center axis line direction of a valve body, a plurality of injection holes through and through constituting a first injection hole set are formed such that an injection hole center axis extending from an injection hole inlet surface toward an injection hole outlet surface is formed to extend in a direction different from that of a straight line connecting the origin of an imaginary orthogonal coordinate system formed by an imaginary X-axis and an imaginary Y-axis and the center of an injection hole inlet surface and that the center of an injection hole outlet surface is situated close to the imaginary X-axis with respect to the center of the injection hole inlet surface.Type: ApplicationFiled: September 21, 2016Publication date: October 25, 2018Inventors: Mitsuhiro MATSUZAWA, Kazuki YOSHIMURA, Eiji ISHII, Akihiro YAMAZAKI, Takahiro SAITO, Nobuaki KOBAYASHI
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Publication number: 20180258894Abstract: The present invention includes a valve seat and a valve body that cooperatively open/close a fuel passage, a movable element having the valve body provided at one end part thereof and a movable iron core 27a provided at the other end part thereof, a fixed iron core 25 which faces the movable iron core 27a and which attracts the movable iron core 27a by applying a magnetic attraction force thereto, and a cylindrical member that includes thereinside the fixed iron core 25 and the movable iron core 27a. The fixed iron core 25 includes a reduced-diameter part 25m on an outer circumferential surface at the side facing the movable iron core 27a, and the movable iron core 27a includes a reduced-diameter part 27am on an outer circumferential surface at the side facing the fixed iron core 25.Type: ApplicationFiled: August 2, 2016Publication date: September 13, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Akihiro YAMAZAKI, Takahiro SAITO, Nobuaki KOBAYASHI, Akiyasu MIYAMOTO
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Patent number: 10074398Abstract: According to one embodiment, there is provided a storage device including a controller circuit and a storage medium. The controller circuit includes a first conversion circuit and a second conversion circuit. The first conversion circuit converts data into M-ary symbols where M is an integer of 3 or more. The second conversion circuit converts respective ones of the converted n samples of M-ary symbols into signals with L-patterned pulse width where n is an integer of 2 or more. The storage medium stores the converted n samples of signals with L-patterned pulse width. The controller circuit further includes an equalization circuit that equalizes signals read from the storage medium into the n samples of M-ary symbols.Type: GrantFiled: September 12, 2017Date of Patent: September 11, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Kohsuke Harada, Akihiro Yamazaki, Nobuhiro Maeto
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Publication number: 20180230953Abstract: The present invention includes a bobbin having a winding part around which a coil winding is wound, a terminal extending from the bobbin in the axial direction of the bobbin, and a wrapping part which is provided to the terminal and in which a terminal lead wire pulled out from a coil part that is wound around the winding part is wrapped and fused. The terminal lead wire wired between the bobbin and the wrapping part in a state of being in contact with the surface of the terminal. The peripheries of the bobbin, the wiring part of the terminal lead wire and the wrapping part are covered with resin.Type: ApplicationFiled: August 3, 2016Publication date: August 16, 2018Inventors: Eiji TAMURA, Nobuaki KOBAYASHI, Takahiro SAITO, Akihiro YAMAZAKI
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Publication number: 20180197573Abstract: According to one embodiment, there is provided a storage device including a controller circuit and a storage medium. The controller circuit includes a first conversion circuit and a second conversion circuit. The first conversion circuit converts data into M-ary symbols where M is an integer of 3 or more. The second conversion circuit converts respective ones of the converted n samples of M-ary symbols into signals with L-patterned pulse width where n is an integer of 2 or more. The storage medium stores the converted n samples of signals with L-patterned pulse width. The controller circuit further includes an equalization circuit that equalizes signals read from the storage medium into the n samples of M-ary symbols.Type: ApplicationFiled: September 12, 2017Publication date: July 12, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Kohsuke HARADA, Akihiro YAMAZAKI, Nobuhiro MAETO
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Publication number: 20180187640Abstract: There is provided a manufacturing method of a hollow composite magnetic member having weakened magnetism in a portion of a ferromagnetic hollow member, the method includes: a step of forming a weak-magnetic area having weakened magnetism by melting and mixing a Ni-containing material and the hollow member by continuously supplying the Ni-containing material to a portion of the hollow member and heating the irradiation area having a line segment shape with the laser beam. Accordingly, since it is possible to prevent drop of a local portion of a hollow ferromagnetic pipe from being easily generated by a weak-magnetization treatment, to greatly reduce deformation generated by laser irradiation, and it becomes unnecessary to adjust the shielding gas pressure inside the pipe, the weak-magnetization treatment can be performed with higher efficiency and higher quality.Type: ApplicationFiled: June 9, 2016Publication date: July 5, 2018Inventors: Xudong ZHANG, Shinya OKAMOTO, Nobuaki KOBAYASHI, Takahiro SAITO, Akihiro YAMAZAKI
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Publication number: 20180187636Abstract: There is provided a hollow composite magnetic member obtained by partially reforming a hollow member which is formed of a ferromagnetic material containing Cr of 15 mass % or more and 18 mass % or less, in which the reformed portion includes an alloy containing Cr of 8 mass % or more and 18 mass % and Ni of 6.5 mass % or more and 50 mass % or less. Accordingly, a hollow composite magnetic member having a small width of the nonmagnetic portion and a fuel injection valve having the same can be provided.Type: ApplicationFiled: June 9, 2016Publication date: July 5, 2018Applicant: Hitachi Automotive Systems, Ltd.Inventors: Shinya OKAMOTO, Xudong ZHANG, Nobuaki KOBAYASHI, Takahiro SAITO, Akihiro YAMAZAKI
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Patent number: 9957421Abstract: Provided are a sealing tape that can prevent tape width misalignment, air bubble inclusion, and creasing even when the sealing tape is affixed in a folded state, a phosphor sheet using the same, a lighting device, a liquid-crystal display, a method for manufacturing a phosphor sheet, and a sealing method. The sealing tape (10) includes an adhesive layer (11), a gas barrier layer (12), a bonding layer (13), and a support film layer (14) laminated in stated order, and has an incision (15) into the support film layer (14) in a thickness direction. The incision (15) is located substantially centrally in a width direction and extends in a longitudinal direction. Accordingly, tape width misalignment, air bubble inclusion, and creasing can be prevented even when the sealing tape is affixed in a folded state.Type: GrantFiled: February 5, 2015Date of Patent: May 1, 2018Assignee: Dexerials CorporationInventors: Yasushi Ito, Tomomitsu Hori, Teruo Hiyama, Akihiro Yamazaki, Yoshifumi Ueno
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Publication number: 20170335814Abstract: The purpose of the present invention is to provide a fuel injection valve that can achieve sufficient atomization even if the spray angle is narrow.Type: ApplicationFiled: September 14, 2015Publication date: November 23, 2017Inventors: Kazuki YOSHIMURA, Mitsuhiro MATSUZAWA, Eiji ISHII, Akihiro YAMAZAKI, Takahiro SAITO, Nobuaki KOBAYASHI
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Publication number: 20170009109Abstract: Provided are a sealing tape that can prevent tape width misalignment, air bubble inclusion, and creasing even when the sealing tape is affixed in a folded state, a phosphor sheet using the same, a lighting device, a liquid-crystal display, a method for manufacturing a phosphor sheet, and a sealing method. The sealing tape (10) includes an adhesive layer (11), a gas barrier layer (12), a bonding layer (13), and a support film layer (14) laminated in stated order, and has an incision (15) into the support film layer (14) in a thickness direction. The incision (15) is located substantially centrally in a width direction and extends in a longitudinal direction. Accordingly, tape width misalignment, air bubble inclusion, and creasing can be prevented even when the sealing tape is affixed in a folded state.Type: ApplicationFiled: February 5, 2015Publication date: January 12, 2017Applicant: Dexerials CorporationInventors: Yasushi ITO, Tomomitsu HORI, Teruo HIYAMA, Akihiro YAMAZAKI, Yoshifumi UENO
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Patent number: 9489977Abstract: According to one embodiment, there is provided a storage device including a data converter, a recording medium, and an equalizer. The data converter converts data into sets of n number of four-ary symbols according to mapping rules in which 22n-1 or fewer types of bit labels are mapped onto the n number of four-ary symbols, where n is an integer of two or greater. Onto the recording medium, the converted n number of four-ary symbols are recorded in the form of a signal of one level among four levels. The equalizer equalizes a signal read from the recording medium into sets of the n number of four-ary symbols.Type: GrantFiled: December 4, 2015Date of Patent: November 8, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Kohsuke Harada, Akihiro Yamazaki, Tomokazu Okubo