Patents by Inventor Kei Okumura

Kei Okumura 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).

  • Publication number: 20230185295
    Abstract: The present disclosure discloses an electronic control device. The electronic control device includes a memory unit, a control executing unit, and a test executing unit. The memory unit includes a rewritable region, which stores a control program, and a non-rewritable region, which stores test data and an anticipated test result. The control executing unit acquires input data and calculates a control value by executing the control program using the input data. The test data corresponds to the input data. The test executing unit: executes the test by running the control program using the test data in response to rewriting of the control program; determines whether the control program after rewriting works normally by comparing a test result calculated based on the test data and the anticipated test result; and permits start of the control program according to the determining result.
    Type: Application
    Filed: November 9, 2022
    Publication date: June 15, 2023
    Inventor: KEI OKUMURA
  • Patent number: 10472475
    Abstract: Provided are a method of producing a glass-fiber-reinforced thermoplastic resin molded object by which a special glass-fiber-reinforced thermoplastic resin molded object excellent in mechanical strength and aesthetic appearance can be easily produced, and a glass-fiber-reinforced thermoplastic resin molded object obtained by the method. Glass fiber chopped strands subjected to a surface treatment with at least one of a urethane-based sizing agent and an acrylic urethane-based sizing agent, the glass fiber chopped strands each having a fiber length of from 1.2 mm to 1.8 mm, and a thermoplastic resin are each directly loaded into an injection molding machine, and are subjected to injection molding to produce the following special glass-fiber-reinforced thermoplastic resin molded object. The resin molded object shows a specific fiber length distribution and shows a specific tensile strength, and unopened glass fibers are absent on the surface of the resin molded object.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: November 12, 2019
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Masayoshi Nakano, Junichiro Suzuki, Kanako Munenobu, Kei Okumura
  • Patent number: 10393213
    Abstract: A vibration-damping device comprising: first and second attachment members connected elastically by a main rubber elastic body; an inner bracket fixed to the first attachment member with its basal end superposed on an outside end face of the first attachment member while extending laterally relative to the first attachment member; a bag-shaped stopper rubber mounted covering the basal end of the inner bracket in a non-adhesive way; a through hole formed in the stopper rubber so that the first attachment member inserted through it and the inner bracket are mutually fixed; and an elastic contact part provided at a rim of the through hole and pressed against an outer peripheral face of the first attachment member from a distal end side of the inner bracket so that the stopper rubber is positioned relative to the inner bracket in extension direction of the inner bracket.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: August 27, 2019
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Junji Abe, Kei Okumura
  • Patent number: 10351693
    Abstract: A glass-fiber-reinforced thermoplastic resin molding product is provided, which has a ring-shaped structure, and includes a thermoplastic resin, and a fibrous filler dispersed in the thermoplastic resin. The fibrous filler includes: (A) 40 to 80% of glass fibers each having a length of at least 0.05 mm and less than 0.5 mm; (B) 15 to 40% of glass fibers each having a length of at least 0.5 mm and less than 1.0 mm; (C) 5 to 30% of glass fibers each having a length of at least 1.0 mm and less than 3.0 mm; and (D) at most 1% of glass fibers each having a length of at least 3.0 mm, based on the total number of fibers of the fibrous filler present in the molding product.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: July 16, 2019
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Masayoshi Nakano, Junichiro Suzuki, Motoshige Hibino, Kei Okumura, Wakako Michiyama, Yasuhiro Komiya
  • Patent number: 10151370
    Abstract: An electromagnetic actuator including: an inner axial member; an outer housing member; a stator and a mover configured to have electromagnetic oscillation force exerted between them, each being securely assembled to different one of the members; and plate springs elastically connecting the members at opposite axial sides thereof, wherein the outer housing member includes an outer tubular member and first and second lid members attached to opposite axial openings thereof, and a first axial side of the outer tubular member has a small-diameter constricted section, and the constricted section has axially inner and outer stepped walls, and the axially inner stepped wall positions a first axial side of the stator or the mover assembled to the outer housing member, while the axially outer stepped wall and the first lid member support a periphery of the corresponding plate spring.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: December 11, 2018
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Tomohiro Kanaya, Kei Okumura
  • Publication number: 20180282496
    Abstract: Provided are a method of producing a glass-fiber-reinforced thermoplastic resin molded object by which a special glass-fiber-reinforced thermoplastic resin molded object excellent in mechanical strength and aesthetic appearance can be easily produced, and a glass-fiber-reinforced thermoplastic resin molded object obtained by the method. Glass fiber chopped strands subjected to a surface treatment with at least one of a urethane-based sizing agent and an acrylic urethane-based sizing agent, the glass fiber chopped strands each having a fiber length of from 1.2 mm to 1.8 mm, and a thermoplastic resin are each directly loaded into an injection molding machine, and are subjected to injection molding to produce the following special glass-fiber-reinforced thermoplastic resin molded object. The resin molded object shows a specific fiber length distribution and shows a specific tensile strength, and unopened glass fibers are absent on the surface of the resin molded object.
    Type: Application
    Filed: December 29, 2017
    Publication date: October 4, 2018
    Applicant: Sumitomo Riko Company Limited
    Inventors: Masayoshi Nakano, Junichiro Suzuki, Kanako Munenobu, Kei Okumura
  • Publication number: 20180266513
    Abstract: A vibration-damping device comprising: first and second attachment members connected elastically by a main rubber elastic body; an inner bracket fixed to the first attachment member with its basal end superposed on an outside end face of the first attachment member while extending laterally relative to the first attachment member; a bag-shaped stopper rubber mounted covering the basal end of the inner bracket in a non-adhesive way; a through hole formed in the stopper rubber so that the first attachment member inserted through it and the inner bracket are mutually fixed; and an elastic contact part provided at a rim of the through hole and pressed against an outer peripheral face of the first attachment member from a distal end side of the inner bracket so that the stopper rubber is positioned relative to the inner bracket in extension direction of the inner bracket.
    Type: Application
    Filed: February 6, 2018
    Publication date: September 20, 2018
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Junji ABE, Kei OKUMURA
  • Patent number: 9931923
    Abstract: A bracket-equipped vibration-damping device including: a vibration-damping device main body including vertically-separated, elastically-connected first and second mounting members; a bracket receiving the device main body inserted laterally thereinto; a connection-insert section provided for the second mounting member; a connection groove provided for the bracket extending in an insertion direction of the device main body; at least one up-down urging rubber fixed on an outer surface of the connection-insert section on an upper-lower first side; and a lock protrusion formed on an inner surface of the connection groove on an upper-lower second side, with a smaller protrusion dimension than an up-down thickness of the up-down urging rubber such that the connection-insert section is laterally inserted into the connection groove beyond the lock protrusion before being urged to the second side by the up-down urging rubber to be positioned to the connection groove.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: April 3, 2018
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Kenji Oki, Kei Okumura, Tomohiro Kanaya
  • Publication number: 20170341500
    Abstract: A bracket-equipped vibration-damping device including: a vibration-damping device main body including vertically-separated, elastically-connected first and second mounting members; a bracket receiving the device main body inserted laterally thereinto; a connection-insert section provided for the second mounting member; a connection groove provided for the bracket extending in an insertion direction of the device main body; at least one up-down urging rubber fixed on an outer surface of the connection-insert section on an upper-lower first side; and a lock protrusion formed on an inner surface of the connection groove on an upper-lower second side, with a smaller protrusion dimension than an up-down thickness of the up-down urging rubber such that the connection-insert section is laterally inserted into the connection groove beyond the lock protrusion before being urged to the second side by the up-down urging rubber to be positioned to the connection groove.
    Type: Application
    Filed: February 6, 2017
    Publication date: November 30, 2017
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Kenji OKI, Kei OKUMURA, Tomohiro KANAYA
  • Publication number: 20170328441
    Abstract: An electromagnetic actuator including: an inner axial member; an outer housing member; a stator and a mover configured to have electromagnetic oscillation force exerted between them, each being securely assembled to different one of the members; and plate springs elastically connecting the members at opposite axial sides thereof, wherein the outer housing member includes an outer tubular member and first and second lid members attached to opposite axial openings thereof, and a first axial side of the outer tubular member has a small-diameter constricted section, and the constricted section has axially inner and outer stepped walls, and the axially inner stepped wall positions a first axial side of the stator or the mover assembled to the outer housing member, while the axially outer stepped wall and the first lid member support a periphery of the corresponding plate spring.
    Type: Application
    Filed: April 26, 2017
    Publication date: November 16, 2017
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Tomohiro KANAYA, Kei OKUMURA
  • Patent number: 9651111
    Abstract: A fluid-filled vibration damping device including a vibration damping device main unit which has a main rubber elastic body elastically connecting first and second mounting members, and a fluid chamber whose wall is partially constituted by the main rubber elastic body. The vibration damping device main unit further includes a temporary joint member locked on the second mounting member and temporarily coupled thereto in an axial direction, and an annular sealing part provided to the temporary joint member and overlapped on the second mounting member in the axial direction with a sealing rubber sandwiched therebetween for achieving a temporary seal. A sealing coupling member is mounted on the second mounting member while exerting a pressing force in a direction of overlapping on the second mounting member and the temporary joint member for increasing a compression ratio of the sealing rubber and achieving a full seal.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: May 16, 2017
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Mutsumi Muraoka, Tomomi Suzuki, Kei Okumura, Wakako Michiyama
  • Patent number: 9541155
    Abstract: A mounting member for use in a vibration damping device equipped with a main rubber elastic body and a bracket, including: a fixing member configured to be fixed to the bracket; an anchoring member made of resin and configured to be anchored to the main rubber elastic body. The anchoring member is anchored to the fixing member and protrudes from the fixing member.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: January 10, 2017
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Kei Okumura, Wakako Michiyama, Yasuhiro Komiya
  • Patent number: 9506522
    Abstract: A fluid-filled vibration device including a pressure receiving chamber and an equilibrium chamber communicated by an orifice passage and a connecting hole provided on a partition member partitioning the two chambers. The connecting hole is closed by a closing rubber elastic plate to which pressures of the two chambers are applied from the respective sides. The closing rubber elastic plate includes at its outer circumference edge part abutting retaining parts held by the partition member, an elastic deformation area which is provided circumferentially between the abutting retaining parts and elastically deformed to open the connecting hole, and a mass part provided at a circumference direction intermediate part of the elastic deformation area to constitute a mass-spring system together. The resonance frequency of the system is tuned to 50 Hz or greater and set higher than a tuning frequency of the orifice passage.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: November 29, 2016
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Yasuhiro Komiya, Akihito Tanahashi, Kei Okumura
  • Publication number: 20160195154
    Abstract: A fluid-filled vibration device including a pressure receiving chamber and an equilibrium chamber communicated by an orifice passage and a connecting hole provided on a partition member partitioning the two chambers. The connecting hole is closed by a closing rubber elastic plate to which pressures of the two chambers are applied from the respective sides. The closing rubber elastic plate includes at its outer circumference edge part abutting retaining parts held by the partition member, an elastic deformation area which is provided circumferentially between the abutting retaining parts and elastically deformed to open the connecting hole, and a mass part provided at a circumference direction intermediate part of the elastic deformation area to constitute a mass-spring system together. The resonance frequency of the system is tuned to 50 Hz or greater and set higher than a tuning frequency of the orifice passage.
    Type: Application
    Filed: August 20, 2015
    Publication date: July 7, 2016
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Yasuhiro KOMIYA, Akihito TANAHASHI, Kei OKUMURA
  • Patent number: 9365101
    Abstract: A fluid-filled vibration damping device including a main rubber elastic body composed of a first rubber elastic body and a second rubber elastic body which are overlapped in an axial direction, and a pair of axis-perpendicular liquid chambers formed between the first and second rubber elastic bodies. A pair of dividing walls which divide the axis-perpendicular liquid chambers are constituted by a first division piece protruding from the first rubber elastic body and a second division piece protruding from the second rubber elastic body being overlapped in a circumferential direction. The first rubber elastic body has a thickness, diameter and spring constant all set larger than those of the second rubber elastic body, while having a tapered shape. With the device mounted on a vibration transmission system, a static support load is input so as to compress the first rubber elastic body.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: June 14, 2016
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventor: Kei Okumura
  • Patent number: 9334922
    Abstract: A fluid-filled vibration damping device including: a pressure-receiving chamber; an equilibrium chamber; a partition member having a communication aperture through which the two chambers communicate; and an elastic rubber plate superposed to cover the communication aperture from a pressure-receiving chamber side. The elastic rubber plate includes one or more contact retaining portions that are provided on an outer peripheral edge thereof and retained in contact against the partition member, and a deformation-allowing region that is provided between circumferentially opposite ends of one or two of the contact retaining portions of the elastic rubber plate and that is elastically deformable based on pressure differential between the two chambers. A gap is formed between the deformation-allowing region and the partition member so that a communication passage is constituted by including the gap through which the two chambers communicate with each other.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: May 10, 2016
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventor: Kei Okumura
  • Publication number: 20150259511
    Abstract: A glass-fiber-reinforced thermoplastic resin molding product is provided, which has a ring-shaped structure, and includes a thermoplastic resin, and a fibrous filler dispersed in the thermoplastic resin. The fibrous filler includes: (A) 40 to 80% of glass fibers each having a length of at least 0.05 mm and less than 0.5 mm; (B) 15 to 40% of glass fibers each having a length of at least 0.5 mm and less than 1.0 mm; (C) 5 to 30% of glass fibers each having a length of at least 1.0 mm and less than 3.0 mm; and (D) at most 1% of glass fibers each having a length of at least 3.0 mm, based on the total number of fibers of the fibrous filler present in the molding product.
    Type: Application
    Filed: June 3, 2015
    Publication date: September 17, 2015
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Masayoshi Nakano, Junichiro Suzuki, Motoshige Hibino, Kei Okumura, Wakako Michiyama, Yasuhiro Komiya
  • Publication number: 20150252866
    Abstract: A fluid-filled vibration damping device including a vibration damping device main unit which has a main rubber elastic body elastically connecting first and second mounting members, and a fluid chamber whose wall is partially constituted by the main rubber elastic body. The vibration damping device main unit further includes a temporary joint member locked on the second mounting member and temporarily coupled thereto in an axial direction, and an annular sealing part provided to the temporary joint member and overlapped on the second mounting member in the axial direction with a sealing rubber sandwiched therebetween for achieving a temporary seal. A sealing coupling member is mounted on the second mounting member while exerting a pressing force in a direction of overlapping on the second mounting member and the temporary joint member for increasing a compression ratio of the sealing rubber and achieving a full seal.
    Type: Application
    Filed: May 21, 2015
    Publication date: September 10, 2015
    Inventors: Mutsumi MURAOKA, Tomomi SUZUKI, Kei OKUMURA, Wakako MICHIYAMA
  • Publication number: 20150219178
    Abstract: A fluid-filled vibration damping device including a main rubber elastic body composed of a first rubber elastic body and a second rubber elastic body which are overlapped in an axial direction, and a pair of axis-perpendicular liquid chambers formed between the first and second rubber elastic bodies. A pair of dividing walls which divide the axis-perpendicular liquid chambers are constituted by a first division piece protruding from the first rubber elastic body and a second division piece protruding from the second rubber elastic body being overlapped in a circumferential direction. The first rubber elastic body has a thickness, diameter and spring constant all set larger than those of the second rubber elastic body, while having a tapered shape. With the device mounted on a vibration transmission system, a static support load is input so as to compress the first rubber elastic body.
    Type: Application
    Filed: January 20, 2015
    Publication date: August 6, 2015
    Inventor: Kei OKUMURA
  • Publication number: 20150069686
    Abstract: A fluid-filled vibration damping device including: a pressure-receiving chamber; an equilibrium chamber; a partition member having a communication aperture through which the two chambers communicate; and an elastic rubber plate superposed to cover the communication aperture from a pressure-receiving chamber side. The elastic rubber plate includes one or more contact retaining portions that are provided on an outer peripheral edge thereof and retained in contact against the partition member, and a deformation-allowing region that is provided between circumferentially opposite ends of one or two of the contact retaining portions of the elastic rubber plate and that is elastically deformable based on pressure differential between the two chambers. A gap is formed between the deformation-allowing region and the partition member so that a communication passage is constituted by including the gap through which the two chambers communicate with each other.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventor: Kei OKUMURA