Patents by Inventor Kazunari Yamamoto
Kazunari Yamamoto 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: 11942685Abstract: A first antenna, a second antenna, and a waveguide structure are housed in a single cabinet. An operating frequency of the second antenna is higher than an operating frequency of the first antenna. The second antenna is an array antenna including a plurality of radiating elements. The waveguide structure is present outside a range of a half-value angle of a main beam as viewed from the first antenna, includes a unit waveguide disposed in a route of a radio wave received by the second antenna, and further attenuates a radio wave with the operating frequency of the first antenna.Type: GrantFiled: February 17, 2022Date of Patent: March 26, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Hideki Ueda, Yasuhisa Yamamoto, Masashi Omuro, Kazunari Kawahata, Satoshi Tanaka, Ryuken Mizunuma
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Publication number: 20240093629Abstract: A cooling mechanism 10 includes: a cooling circuit 11; and a compressor cooling path 30 branched from the cooling circuit 11 and joined to the cooling circuit 11 after passing through an inside of a compressor 22. The cooling mechanism 10 includes a flow rate adjustment valve 32 configured to control a flow rate of cooling water flowing inside the compressor 22. The flow rate adjustment valve 32 is configured to make the flow rate of the cooling water flowing inside the compressor 22 when a temperature of intake air at an outlet of the compressor 22 is lower than a temperature of the cooling water lower than the flow rate of the cooling water flowing inside the compressor 22 when the temperature of the intake air at the outlet of the compressor 22 becomes equal to or higher than the temperature of the cooling water.Type: ApplicationFiled: March 8, 2022Publication date: March 21, 2024Inventor: Kazunari YAMAMOTO
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Publication number: 20240053933Abstract: An object is to provide a technique to make it difficult to restore data remaining in a memory by a simple method. The printing apparatus includes: a reception unit configured to receive a file transmitted from an external device; a volatile memory storing data included in the file in a case where the external device is a predetermined server; and an overwriting unit configured to rewrite the data with dummy data, which is stored in a sector to a limit of the capacity in the volatile memory, in a case where the sector of the volatile memory storing the data is invalid.Type: ApplicationFiled: July 14, 2023Publication date: February 15, 2024Inventor: Kazunari Yamamoto
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Publication number: 20230332559Abstract: An internal combustion engine includes: a cylinder in which a piston reciprocates; a cylinder head positioned above the cylinder; a gasket disposed between the cylinder and the cylinder head; a stepped portion formed at an upper end portion of an inner peripheral surface of the cylinder; a ring member having a cylindrical shape provided to the stepped portion; and a seal member that is provided on an upper surface of the ring member and is sandwiched between the ring member and the cylinder head.Type: ApplicationFiled: March 31, 2023Publication date: October 19, 2023Inventors: Kazunari YAMAMOTO, Misao GOTO, Takumi KOMIYAMA
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Publication number: 20230332558Abstract: An internal combustion engine includes: a cylinder in which a piston reciprocates; a cylinder head positioned above the cylinder; a gasket disposed between the cylinder and the cylinder head; a stepped portion that is formed at an upper end portion of an inner peripheral surface of the cylinder and positioned below the gasket; a ring member having a cylindrical shape provided to the stepped portion; and a protrusion portion that is formed in a manner to protrude from the ring member and bites into a lower surface of the gasket.Type: ApplicationFiled: March 30, 2023Publication date: October 19, 2023Inventors: Kazunari YAMAMOTO, Misao GOTO, Takumi KOMIYAMA
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Publication number: 20230323833Abstract: An internal combustion engine includes: a cylinder in which a piston reciprocates; a stepped portion that is formed on an upper end portion of an inner peripheral surface of the cylinder; and a ring member having a cylindrical shape provided to the stepped portion. The thickness of the ring member decreases toward the bottom dear center of the piston, and an outer peripheral surface of the ring member is an inclined surface, where a lower end of the outer peripheral surface is positioned closer to the center in the radial direction of the ring member than an upper end of the outer peripheral surface.Type: ApplicationFiled: March 7, 2023Publication date: October 12, 2023Inventors: Takumi KOMIYAMA, Kazunari YAMAMOTO, Misao GOTO
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Publication number: 20230297218Abstract: A terminal includes processors and memory storing one or more sets of instructions including instructions for: at initial activation of an application program after a user installs the application program on the terminal, in response to a predetermined input made by the user, causing a transition between introducing screens corresponding to functions of the application program, each introducing screen introducing a corresponding function; displaying an object on each of the introducing screens; and upon detection of that the user designates an object, displaying on a display first a function screen that enables the user to use a function corresponding to an introducing screen including the object designated by the user, from among function screens corresponding to the functions of the application program, each function screen enabling the user to use a corresponding function.Type: ApplicationFiled: November 22, 2022Publication date: September 21, 2023Inventors: Masanari KOSHINO, Kazunari YAMAMOTO
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Publication number: 20230208289Abstract: A power supply system includes a power converter and a controller. The power converter includes a positive electrode line, a negative electrode line, first and second switching elements, and a magnetic coupling reactor. The magnetic coupling reactor includes a reactor core, and first and second coils. The second coil is wound around a second outer leg of the reactor core and is magnetically differentially connected to the first coil. The controller is configured to execute a first discharge process and a second discharge process, which is executed after the first discharge process, to discharge electric charge remaining in the fuel cell. The controller is configured to, in the first discharge process, turn on the first switching element in a state where the second switching element is off, and, in the second discharge process, turn on the second switching element in a state where the first switching element is on.Type: ApplicationFiled: October 7, 2022Publication date: June 29, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kazunari YAMAMOTO
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Publication number: 20230003256Abstract: A wheel bearing device (1) including: an outer member (2) on the inner periphery of which an outer-side rolling surface (2c/2d) is formed; an inner member (3) on the outer periphery of which an inner-side rolling surface (3c/3d) is formed; and a plurality of rolling bodies (41) interposed between the rolling surfaces (2c/2d/3c/3d) of the outer member (2) and the inner member (3). The wheel bearing device having a spline hole (3b) formed in a through hole (3h) of the inner member (3). The spline hole includes a guide groove (3G) formed on an inner circumferential surface thereof. A guide plate (8G) of a finishing broach (8) passes through the guide groove in the inner periphery of the spline hole (3b).Type: ApplicationFiled: July 25, 2022Publication date: January 5, 2023Inventors: Kazunari YAMAMOTO, Hayato TANIGUCHI
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Patent number: 11506241Abstract: A wheel bearing device (1) including: an outer member (2) on the inner periphery of which an outer-side rolling surface (2c/2d) is formed; an inner member (3) on the outer periphery of which an inner-side rolling surface (3c/3d) is formed; and a plurality of rolling bodies (41) interposed between the rolling surfaces (2c/2d/3c/3d) of the outer member (2) and the inner member (3). The wheel bearing device having a spline hole (3b) formed in a through hole (3h) of the inner member (3). The spline hole includes a guide groove (3G) formed on an inner circumferential surface thereof. A guide plate (8G) of a finishing broach (8) passes through the guide groove in the inner periphery of the spline hole (3b).Type: GrantFiled: October 24, 2018Date of Patent: November 22, 2022Assignee: NTN CORPORATIONInventors: Kazunari Yamamoto, Hayato Taniguchi
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Patent number: 11021012Abstract: A bearing device (1) for a vehicle wheel provided with: an outer member (2); and an inner member comprising a hub wheel (3), and at least one inner wheel (4) press-fitted into the small-diameter ridge (3A) of the hub wheel (3); wherein a belt-shaped part (2F) that radially protrudes by a protrusion amount (P1) is formed over a prescribed width (W1) in the outer peripheral surface of the outer member (2) so that at least part of the belt-shaped part (2F) radially overlaps the outside rolling surface (2D) which is on the vehicle-wheel-attachment-flange-facing side of the outer member (2). The present invention addresses the problem of providing a bearing device for a vehicle wheel in which the amount of deformation in an opening of an outer member can be reduced and decreases in rolling fatigue service life can be prevented while keeping overall weight increase to a minimum.Type: GrantFiled: September 23, 2016Date of Patent: June 1, 2021Assignee: NTN CORPORATIONInventors: Kazunari Yamamoto, Syougo Suzuki, Shunsuke Morita, Chinami Kitanaka
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Publication number: 20210107864Abstract: The present invention can provide a method for producing an aromatic nitrile in which a fixed-bed reactor including a plurality of reaction tubes is used to subject a gaseous mixture comprising an aromatic hydrocarbon, ammonia, and oxygen by contact catalytic reaction on a catalyst to thereby produce the corresponding aromatic nitrile, wherein the catalyst is composed of an oxide containing vanadium, chromium, and boron and one or more supports selected from among alumina, silica-alumina, zirconia, and titania. One of the reaction tubes is filled with the catalyst of one kind and examined as to where a hot spot lies therein. An inert substance is filled into that portion of each of the plurality of reaction tubes which corresponds at least to the hot spot, and the catalyst is filled into the remaining portions.Type: ApplicationFiled: March 18, 2019Publication date: April 15, 2021Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yutaka KANBARA, Yuta OOMORI, Yoichi KYUUKO, Tomoo TSUJIMOTO, Kazunari YAMAMOTO, Tsuyoshi HATAKEYAMA
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Publication number: 20200318681Abstract: A wheel bearing device (1) including: an outer member (2) on the inner periphery of which an outer-side rolling surface (2c/2d) is formed; an inner member (3) on the outer periphery of which an inner-side rolling surface (3c/3d) is formed; and a plurality of rolling bodies (41) interposed between the rolling surfaces (2c/2d/3c/3d) of the outer member (2) and the inner member (3). The wheel bearing device having a spline hole (3b) formed in a through hole (3h) of the inner member (3). The spline hole includes a guide groove (3G) formed on an inner circumferential surface thereof. A guide plate (8G) of a finishing broach (8) passes through the guide groove in the inner periphery of the spline hole (3b).Type: ApplicationFiled: October 24, 2018Publication date: October 8, 2020Inventors: Kazunari YAMAMOTO, Hayato TANIGUCHI
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Patent number: 10302126Abstract: A bearing device for wheels is configured so as to reduce an amount of deformation of an opening of an outer member while minimizing an increase in overall weight, thus preventing a deterioration in rolling fatigue life. The bearing device for wheels is provided with an outer member having double-row outer rolling surfaces, a hub ring having a wheel mounting flange and having a small-diameter stepped section, and an inner member constituted by at least one inner ring press-fitted over the small-diameter stepped section, the inner member having double-row inner rolling surfaces facing the double-row outer rolling surfaces. A band-shaped section having a predetermined band width and protruding radially by a protrusion amount is formed on at least a part of the wheel mounting flange-side outer peripheral portion of the opening of the outer member.Type: GrantFiled: August 1, 2016Date of Patent: May 28, 2019Assignee: NTN CORPORATIONInventors: Kazunari Yamamoto, Tomoko Baba
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Publication number: 20190136731Abstract: The control device 80 for an internal combustion engine comprises a control unit 81 configured to perform control processing comprising, during warming-up of the internal combustion engine 10, advancing valve opening timing and valve closing timing of an exhaust valve 18 of the internal combustion engine 10 with respect to respective preset reference values thereof, and retarding fuel injection timing of the internal combustion engine 10 with respect to a preset reference value thereof. According to this control device 80 for the internal combustion engine, warming-up of the internal combustion engine 10 can be effectively facilitated, and the warming-up time of the internal combustion engine 10 can thus be shortened.Type: ApplicationFiled: April 20, 2017Publication date: May 9, 2019Applicant: ISUZU MOTORS LIMITEDInventor: Kazunari YAMAMOTO
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Patent number: 10224808Abstract: If the capacitance of a snubber capacitor, the inductance of a coil and the magnitude of a resistor are specified such that the resonance frequency of the snubber circuit coincides with the ringing frequency of the transistor, and the impedance of the first loop at the resonance frequency becomes smaller than the impedance of the second loop at the resonance frequency, a current component due to ringing flows in the snubber circuit, and energy is consumed by the resistor. Therefore, it is possible to quickly converge ringing.Type: GrantFiled: June 27, 2017Date of Patent: March 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kaoru Torii, Kazunari Yamamoto, Kosuke Kaji, Taiki Kato, Takashi Kojima, Katsuya Nomura, Yoshiyuki Hattori
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Patent number: 10174786Abstract: A wheel bearing apparatus has an outer member with a body mounting flange and double row outer raceway surfaces, an inner member with double row inner raceway surfaces opposing the double row outer raceway surfaces, and double row rolling elements contained between the inner raceway surfaces and the outer raceway surfaces, respectively, of the inner member and the outer member. A plurality of bolt insertion holes formed in the outer member body mounting flange. An abutment surface, to abut against the body-side member, is formed around each bolt insertion hole as a surface projecting from the inner-side surface of the body mounting flange with a step height. A relative difference between the step heights of the abutment surfaces is limited to a minimum.Type: GrantFiled: June 12, 2017Date of Patent: January 8, 2019Assignee: NTN CorporationInventors: Hisao Ishiguro, Yasuhiro Aritake, Kazunari Yamamoto
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Publication number: 20180257430Abstract: A bearing device (1) for a vehicle wheel provided with: an outer member (2); and an inner member comprising a hub wheel (3), and at least one inner wheel (4) press-fitted into the small-diameter ridge (3A) of the hub wheel (3); wherein a belt-shaped part (2F) that radially protrudes by a protrusion amount (P1) is formed over a prescribed width (W1) in the outer peripheral surface of the outer member (2) so that at least part of the belt-shaped part (2F) radially overlaps the outside rolling surface (2D) which is on the vehicle-wheel-attachment-flange-facing side of the outer member (2). The present invention addresses the problem of providing a bearing device for a vehicle wheel in which the amount of deformation in an opening of an outer member can be reduced and decreases in rolling fatigue service life can be prevented while keeping overall weight increase to a minimum.Type: ApplicationFiled: September 23, 2016Publication date: September 13, 2018Inventors: Kazunari YAMAMOTO, Syougo SUZUKI, Shunsuke MORITA, Chinami KITANAKA
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Publication number: 20180231054Abstract: The present invention addresses the problem of providing a bearing device for wheels, the bearing device for wheels being configured so as to reduce an amount of deformation of an opening of an outer member while minimizing an increase of an overall the weight, thus preventing a deterioration in rolling fatigue life. A bearing device for wheels is provided with: an outer member having double-row outer rolling surfaces; a hub ring having a wheel mounting flange and having a small-diameter stepped section; and an inner member constituted by at least one inner ring press-fitted over the small-diameter stepped section, the inner member having double-row inner rolling surfaces facing the double-row outer rolling surfaces. A band-shaped section having a predetermined band width and protruding radially by a protrusion amount is formed on at least a part of the wheel mounting flange-side outer peripheral portion of the opening of the outer member.Type: ApplicationFiled: August 1, 2016Publication date: August 16, 2018Inventors: Kazunari YAMAMOTO, Tomoko BABA
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Patent number: D817821Type: GrantFiled: August 5, 2016Date of Patent: May 15, 2018Assignee: NTN CORPORATIONInventors: Tomoko Baba, Kazunari Yamamoto