Patents by Inventor Masaki Koyama
Masaki Koyama 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: 12230754Abstract: An all-solid-state battery includes an electrode assembly including a solid electrolyte layer, a first battery unit having a first negative electrode and a first positive electrode, and a second battery unit having a second negative electrode and a second positive electrode, in which the first negative and positive electrodes and the second negative and positive electrodes are respectively stacked with the solid electrolyte layer interposed therebetween. The all-solid-state battery further includes a first external electrode; a second external electrode; a third external electrode; and a fourth external electrode, in which the second battery unit is disposed to be adjacent to at least one the fifth surface or the sixth surface of the electrode assembly, and the first battery unit is located further inside than the second battery unit in the third direction.Type: GrantFiled: September 21, 2021Date of Patent: February 18, 2025Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventor: Masaki Koyama
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Publication number: 20240418233Abstract: A seal device for a hydraulic apparatus according to the present invention includes an annular main piston split body (outer member), a sub piston split body (inner member) inserted into inside the main piston split body (outer member), and a seal ring accommodated in an annular groove provided in the outer circumference of the sub piston split body (inner member) and abutting on the other of the main piston split body (outer member) to prevent a liquid from passing through a gap between the main piston split body (outer member) and the sub piston split body (inner member), in which the seal ring has a self-lubricating property and has a cylindrical surface centered on an axis on an inner peripheral surface (bottom facing surface) facing a bottom of the annular groove.Type: ApplicationFiled: November 1, 2022Publication date: December 19, 2024Applicant: KYB CorporationInventors: Masaki KOYAMA, Kiyoshi KANI, Takeshi YASUI
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Patent number: 12140200Abstract: A shock absorber is provided. The shock absorber of the present invention includes a shock absorber main body, a damping passage, a primary damping force generation component, and a secondary damping force generation component. The shock absorber main body has an outer tube and a rod and is stretchable. The damping passage communicates operating chambers with each other provided in the shock absorber main body. The primary and secondary damping force generation components are provided in series with the damping passage. The secondary damping force generation component includes a secondary valve, an annular facing portion, and a valve stopper. The annular facing portion faces the secondary valve with an annular gap between the annular facing portion and the secondary valve. The valve stopper has elasticity to allow bending, and when the secondary valve bends and comes in contact with the valve stopper, restricts the secondary valve from bending.Type: GrantFiled: March 9, 2022Date of Patent: November 12, 2024Assignee: KYB CorporationInventors: Takeshi Yasui, Masaki Koyama, Naoki Yamamoto
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Patent number: 12138834Abstract: A molding mold for a composite body 1 for forming a composite body A that integrally molds a resin member R on one main surface of a metal panel P1, including at least a fixed mold 2 and a movable mold 3, and including, in a mold on the resin member side among the fixed mold 2 and the movable mold 3, a panel fixing mechanism 4 that fixes an edge portion of the metal panel P1 in a state in which the fixed mold 2 and the movable mold are open. The molding mold for a composite body 1 eliminates a movable body with respect to a molding space of the resin member R and overcomes the generation of burr in the resin member R, and forms an exposed metal portion B on the edge portion of the metal panel P1 on the resin member R side by the panel fixing mechanism 4.Type: GrantFiled: May 24, 2019Date of Patent: November 12, 2024Assignee: NISSAN MOTOR CO., LTD.Inventors: Masaki Koyama, Takashi Oda
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Publication number: 20240317015Abstract: The purpose of the present invention is to provide a low-cost heat cycle system that can reduce power consumption; an in-wheel motor that is driven by using this heat cycle system; and a vehicle in which this heat cycle system is installed. This heat cycle system is provided with: a compressor; an accumulator; an electric drive unit comprising an electric motor; a refrigerant compressed by the compressor; and an indoor heat exchanger and an outdoor heat exchanger responsible for heat exchange of the refrigerant. The heat cycle system comprises a four-way valve that comprises a single circulation path for circulating the refrigerant and that can switch the connection destination of a refrigerant discharge section of the compressor to the indoor heat exchanger or the outdoor heat exchanger. A cooling unit of the electric drive unit is arranged upstream of the accumulator in the flow of the refrigerant.Type: ApplicationFiled: June 28, 2022Publication date: September 26, 2024Inventors: Akeshi TAKAHASHI, Hiroyuki TOYODA, Masaki KOYAMA, Yuji ENOMOTO, Kinya NAKATSU
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Patent number: 12083844Abstract: A highly reliable and highly efficient air suspension system for a vehicle is provided by improving the trackability of stroke control with respect to pressure fluctuations applied to a linear compressor, suppressing stroke increase due to pressure drop, preventing piston collision, and increasing a flow rate by reducing dead volume. To realize this, the air suspension system includes an air suspension that supplies and discharges compressed air to adjust a length, a compressor body in which a piston reciprocates in a cylinder to compress air, a linear motor that reciprocates the piston, a tank that is connected to the air suspension or the compressor body and stores compressed air, a solenoid valve that opens and closes the air suspension or the tank, and an inverter that changes power supplied to the linear motor according to an open and closed state of the solenoid valve to perform position control of the piston.Type: GrantFiled: October 10, 2018Date of Patent: September 10, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Masaki Koyama, Kaito Hotta, Wataru Hatsuse, Tsutomu Ito, Yoshinori Kawai, Takahiro Suzuki
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Publication number: 20240287974Abstract: A linear motor for a compressor having asymmetric load characteristics in both directions of a stroke, improves the service life of a bearing, and reduces a total length of a system. The linear motor includes a movable element having a magnetic pole frame and a plurality of field element poles, and a plurality of magnetic pole teeth around which windings are wound and that are provided so as to sandwich the movable element, and the movable element and the magnetic pole teeth are relatively displaced. The plurality of field element poles include primary magnets arranged between the plurality of magnetic pole teeth and secondary magnets arranged externally relative to spaces between the plurality of magnetic pole teeth in either direction of the relative displacement. A neck part of the magnetic pole frame connected to a bearing is arranged externally in the other direction of the relative displacement direction.Type: ApplicationFiled: May 18, 2022Publication date: August 29, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Junnosuke NAKATSUGAWA, Masaki KOYAMA, Hiroshi SAKAI, Kan KOBAYASHI, Yoshinori KAWAI
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Publication number: 20230392666Abstract: A sealing device for hydraulic equipment according to the invention includes an outer member having an annular shape, an inner member inserted into the outer member, and a seal ring housed in an annular groove disposed in the outer circumference of the inner member and abutting on the outer member to prevent a liquid from passing through a gap between the outer member and the inner member. The annular groove of the inner member has a bottom portion including a recess for restraining axial displacement of the seal ring relative to the annular groove.Type: ApplicationFiled: November 30, 2021Publication date: December 7, 2023Applicant: KYB CorporationInventors: Masaki KOYAMA, Norihiro ASANO, Takeshi YASUI
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Patent number: 11753084Abstract: A vehicle body structure includes a body side section (1) configured of a first composite component (10) and a body lower section (2) configured of a second composite component (20). Each of the first and second composite components (10, 20) comprises a metal plate (11, 21) and a fiber reinforced thermoplastic portion (12, 22) that contains discontinuous fibers. The fiber reinforced thermoplastic portion (12) of the first composite component (10) includes a lining layer formed on the metal plate (11) and reinforcing ribs raised from the lining layer. The fiber reinforced thermoplastic portion (22) of the second composite component (20) includes a planar portion (24) infilled in an opening (23) opened on the metal plate 21. The discontinuous fibers in the fiber reinforced thermoplastic portion (22) of the second composite component (20) are longer than the discontinuous fibers in the fiber reinforced thermoplastic portion (12) of the first composite component (10).Type: GrantFiled: January 18, 2019Date of Patent: September 12, 2023Assignee: NISSAN MOTOR CO., LTD.Inventors: Takashi Oda, Shinichiro Takemoto, Toshikazu Torigaki, Naoya Matsuoka, Zhe Jiang, Masaki Koyama
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Patent number: 11749675Abstract: Between a source electrode (25) of a main device (24) and a current sensing electrode (22) of a current detection device (21), a resistor for detecting current is connected. Dielectric withstand voltage of gate insulator (36) is larger than a product of the resistor and maximal current flowing through the current detection device (21) with reverse bias. A diffusion length of a p-body region (32) of the main device (24) is shorter than that of a p-body (31) of the current detection device (21). A curvature radius at an end portion of the p-body region (32) of the main device (24) is smaller than that of the p-body (31) of the current detection device (21). As a result, at the inverse bias, electric field at the end portion of the p-body region (32) of the main device (24) becomes stronger than that of the p-body region (31) of the current detection device (21). Consequently, avalanche breakdown tends to occur earlier in the main device 24 than the current detection device (21).Type: GrantFiled: January 7, 2021Date of Patent: September 5, 2023Assignees: FUJI ELECTRIC CO., LTD., DENSO CORPORATIONInventors: Seiji Momota, Hitoshi Abe, Takashi Shiigi, Takeshi Fujii, Koh Yoshikawa, Tetsutaro Imagawa, Masaki Koyama, Makoto Asai
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Patent number: 11745682Abstract: A vehicle bumper is provided integrally to include metal beam-extension portions on both right-and-left end sides of a metal bumper-beam portion. In this vehicle bumper, the bumper-beam portion and the beam-extension portion include a vertical wall portion, an upper wall portion and a lower wall portion, and a resin reinforcing rib is joined to inner surfaces of a void formed of each of the wall portions. In addition, in this vehicle bumper, an extension dimension of the upper wall portion and the lower wall portion of the beam-extension portion is larger than an extension dimension of the upper wall portion and the lower wall portion in the bumper-beam portion, the resin reinforcing rib in the beam-extension portion is joined to the vertical wall portion, the upper wall portion, and the lower wall portion of the beam-extension portion; and the stiffness of the bumper-beam portion is higher than the stiffness of the beam-extension portion.Type: GrantFiled: February 17, 2020Date of Patent: September 5, 2023Assignee: NISSAN MOTOR CO., LTD.Inventors: Shinichirou Takemoto, Shinya Mihara, Masaki Koyama
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Patent number: 11697233Abstract: Provided is a composite (A) including a metal plate (B) and a reinforcing member (C) that is made of a resin. The metal plate (B) includes a joint portion (2) that is continuous with one end of a body portion (1), a hole that is formed through the body portion (1) in a thickness direction of the body portion (1) in the proximity of the joint portion (2), and a guide portion provided around the hole. The reinforcing member (C) continuously includes a main portion (5), a coupling portion (6) formed in the hole (3), and a locking portion (7) that is held in close contact with a surface on another side of the body portion (1). The guide portion (4) is at least one of a protruding portion provided on at least one of a rear side and a lateral side relative to the hole (3) in a direction from the body portion (1) to the joint portion (2), and a recessed portion extended from a front side relative to the hole (3) to the hole (3) in the direction from the body portion to the joint portion.Type: GrantFiled: June 26, 2018Date of Patent: July 11, 2023Assignee: NISSAN MOTOR CO., LTD.Inventors: Masaki Koyama, Takashi Oda, Katsumi Morohoshi
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Publication number: 20230142321Abstract: A vehicle bumper is provided integrally to include metal beam-extension portions on both right-and-left end sides of a metal bumper-beam portion. In this vehicle bumper, the bumper-beam portion and the beam-extension portion include a vertical wall portion, an upper wall portion and a lower wall portion, and a resin reinforcing rib is joined to inner surfaces of a void formed of each of the wall portions. In addition, in this vehicle bumper, an extension dimension of the upper wall portion and the lower wall portion of the beam-extension portion is larger than an extension dimension of the upper wall portion and the lower wall portion in the bumper-beam portion, the resin reinforcing rib in the beam-extension portion is joined to the vertical wall portion, the upper wall portion, and the lower wall portion of the beam-extension portion; and the stiffness of the bumper-beam portion is higher than the stiffness of the beam-extension portion.Type: ApplicationFiled: February 17, 2020Publication date: May 11, 2023Applicant: NISSAN MOTOR CO., LTD.Inventors: Shinichirou TAKEMOTO, Shinya MIHARA, Masaki KOYAMA
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Publication number: 20220316549Abstract: A shock absorber is provided. The shock absorber of the present invention includes a shock absorber main body, a damping passage, a primary damping force generation component, and a secondary damping force generation component. The shock absorber main body has an outer tube and a rod and is stretchable. The damping passage communicates operating chambers with each other provided in the shock absorber main body. The primary and secondary damping force generation components are provided in series with the damping passage. The secondary damping force generation component includes a secondary valve, an annular facing portion, and a valve stopper. The annular facing portion faces the secondary valve with an annular gap between the annular facing portion and the secondary valve. The valve stopper has elasticity to allow bending, and when the secondary valve bends and comes in contact with the valve stopper, restricts the secondary valve from bending.Type: ApplicationFiled: March 9, 2022Publication date: October 6, 2022Applicant: KYB CORPORATIONInventors: Takeshi YASUI, Masaki KOYAMA, Naoki YAMAMOTO
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Publication number: 20220258391Abstract: The present invention provides a method for manufacturing a metal-resin composite including a metal plate and a thermoplastic resin that directly covers at least a part of one surface of the metal plate. As the method includes a support member placing step of fixing a resin support member for supporting the metal plate, in a mold, a metal plate placing step of placing the metal plate on the support member, and an integrating step of integrating the thermoplastic resin that is applied to a support member side of the metal plate, the support member, and the metal plate, into one body in the mold, the metal-resin composite that is unlikely to have a peeling start point of the thermoplastic resin is manufactured.Type: ApplicationFiled: July 5, 2019Publication date: August 18, 2022Applicant: NISSAN MOTOR CO., LTD.Inventors: Takashi ODA, Masaki KOYAMA
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Patent number: 11411522Abstract: Controllability of a linear motor or a compressor is improved in a linear motor system that includes: an armature having magnetic poles and winding wires; a mover having a permanent magnet; and a power conversion unit that outputs AC power to the winding wires, in which the mover and the armature are relatively movable, and the mover or the armature is connected to an elastic body. The linear motor system further includes: a position detection unit that detects and outputs the position of the mover with respect to the armature, a position estimation, or a current detection unit that outputs the value of current flowing through the winding wires; and a control unit that controls the output of the power conversion unit on the basis of the output of the position detection unit, the output of the position estimation unit, or the output of the current detection unit.Type: GrantFiled: August 13, 2020Date of Patent: August 9, 2022Assignee: Hitachi, Ltd.Inventors: Takahiro Suzuki, Shuhei Nagata, Wataru Hatsuse, Masaki Koyama
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Patent number: 11401924Abstract: Provided are a linear compressor and a linear compressor control system that do not require a sensor for detecting a position of a mover, and can compute a mover position with high accuracy, in consideration of position dependency of an induced voltage constant. A linear compressor 20 includes a field element 11 having a first end connected to elastic bodies (201a and 201b) and including a permanent magnet 111, an armature 12 having a winding 122 wound around a magnetic pole 121, and a linear motor 10 that causes the field element 11 and the armature 12 to reciprocate relatively in an axial direction.Type: GrantFiled: February 19, 2019Date of Patent: August 2, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Kaito Hotta, Wataru Hatsuse, Masaki Koyama, Tsutomu Ito, Yoshinori Kawai
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Publication number: 20220234265Abstract: A molding mold for a composite body 1 for forming a composite body A that integrally molds a resin member R on one main surface of a metal panel P1, including at least a fixed mold 2 and a movable mold 3, and including, in a mold on the resin member side among the fixed mold 2 and the movable mold 3, a panel fixing mechanism 4 that fixes an edge portion of the metal panel P1 in a state in which the fixed mold 2 and the movable mold are open. The molding mold for a composite body 1 eliminates a movable body with respect to a molding space of the resin member R and overcomes the generation of burr in the resin member R, and forms an exposed metal portion B on the edge portion of the metal panel P1 on the resin member R side by the panel fixing mechanism 4.Type: ApplicationFiled: May 24, 2019Publication date: July 28, 2022Applicant: NISSAN MOTOR CO., LTD.Inventors: Masaki KOYAMA, Takashi ODA
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Publication number: 20220209378Abstract: An all-solid-state battery includes an electrode assembly in which a solid electrolyte layer, a positive electrode layer, and a negative electrode layer are alternately stacked; a negative electrode terminal connected to the negative electrode layer; a positive electrode terminal connected to the positive electrode layer; and an insulator disposed to contact an end portion of the negative electrode layer in the first direction, and at least one of a negative electrode ion concentration portion and a negative electrode electric field concentration portion is disposed to be spaced apart from a negative electrode longitudinal end portion disposed on the same negative electrode reference surface.Type: ApplicationFiled: September 27, 2021Publication date: June 30, 2022Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventor: Masaki KOYAMA
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Publication number: 20220194485Abstract: A vehicle body structure includes a body side section (1) configured of a first composite component (10) and a body lower section (2) configured of a second composite component (20). Each of the first and second composite components (10, 20) comprises a metal plate (11, 21) and a fiber reinforced thermoplastic portion (12, 22) that contains discontinuous fibers. The fiber reinforced thermoplastic portion (12) of the first composite component (10) includes a lining layer formed on the metal plate (11) and reinforcing ribs raised from the lining layer. The fiber reinforced thermoplastic portion (22) of the second composite component (20) includes a planar portion (24) infilled in an opening (23) opened on the metal plate 21. The discontinuous fibers in the fiber reinforced thermoplastic portion (22) of the second composite component (20) are longer than the discontinuous fibers in the fiber reinforced thermoplastic portion (12) of the first composite component (10).Type: ApplicationFiled: January 18, 2019Publication date: June 23, 2022Applicant: NISSAN MOTOR CO., LTD.Inventors: Takashi ODA, Shinichiro TAKEMOTO, Toshikazu TORIGAKI, Naoya MATSUOKA, Zhe JIANG, Masaki KOYAMA