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).
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Publication number: 20230185295Abstract: 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: ApplicationFiled: November 9, 2022Publication date: June 15, 2023Inventor: KEI OKUMURA
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Patent number: 10472475Abstract: 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: GrantFiled: December 29, 2017Date of Patent: November 12, 2019Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Masayoshi Nakano, Junichiro Suzuki, Kanako Munenobu, Kei Okumura
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Patent number: 10393213Abstract: 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: GrantFiled: February 6, 2018Date of Patent: August 27, 2019Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Junji Abe, Kei Okumura
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Patent number: 10351693Abstract: 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: GrantFiled: June 3, 2015Date of Patent: July 16, 2019Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Masayoshi Nakano, Junichiro Suzuki, Motoshige Hibino, Kei Okumura, Wakako Michiyama, Yasuhiro Komiya
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Patent number: 10151370Abstract: 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: GrantFiled: April 26, 2017Date of Patent: December 11, 2018Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Tomohiro Kanaya, Kei Okumura
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Publication number: 20180282496Abstract: 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: ApplicationFiled: December 29, 2017Publication date: October 4, 2018Applicant: Sumitomo Riko Company LimitedInventors: Masayoshi Nakano, Junichiro Suzuki, Kanako Munenobu, Kei Okumura
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Publication number: 20180266513Abstract: 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: ApplicationFiled: February 6, 2018Publication date: September 20, 2018Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Junji ABE, Kei OKUMURA
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Patent number: 9931923Abstract: 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: GrantFiled: February 6, 2017Date of Patent: April 3, 2018Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Kenji Oki, Kei Okumura, Tomohiro Kanaya
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Publication number: 20170341500Abstract: 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: ApplicationFiled: February 6, 2017Publication date: November 30, 2017Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Kenji OKI, Kei OKUMURA, Tomohiro KANAYA
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Publication number: 20170328441Abstract: 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: ApplicationFiled: April 26, 2017Publication date: November 16, 2017Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Tomohiro KANAYA, Kei OKUMURA
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Patent number: 9651111Abstract: 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: GrantFiled: May 21, 2015Date of Patent: May 16, 2017Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Mutsumi Muraoka, Tomomi Suzuki, Kei Okumura, Wakako Michiyama
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Patent number: 9541155Abstract: 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: GrantFiled: July 10, 2014Date of Patent: January 10, 2017Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Kei Okumura, Wakako Michiyama, Yasuhiro Komiya
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Patent number: 9506522Abstract: 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: GrantFiled: August 20, 2015Date of Patent: November 29, 2016Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Yasuhiro Komiya, Akihito Tanahashi, Kei Okumura
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Publication number: 20160195154Abstract: 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: ApplicationFiled: August 20, 2015Publication date: July 7, 2016Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Yasuhiro KOMIYA, Akihito TANAHASHI, Kei OKUMURA
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Patent number: 9365101Abstract: 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: GrantFiled: January 20, 2015Date of Patent: June 14, 2016Assignee: SUMITOMO RIKO COMPANY LIMITEDInventor: Kei Okumura
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Patent number: 9334922Abstract: 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: GrantFiled: November 14, 2014Date of Patent: May 10, 2016Assignee: SUMITOMO RIKO COMPANY LIMITEDInventor: Kei Okumura
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Publication number: 20150259511Abstract: 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: ApplicationFiled: June 3, 2015Publication date: September 17, 2015Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Masayoshi Nakano, Junichiro Suzuki, Motoshige Hibino, Kei Okumura, Wakako Michiyama, Yasuhiro Komiya
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Publication number: 20150252866Abstract: 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: ApplicationFiled: May 21, 2015Publication date: September 10, 2015Inventors: Mutsumi MURAOKA, Tomomi SUZUKI, Kei OKUMURA, Wakako MICHIYAMA
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Publication number: 20150219178Abstract: 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: ApplicationFiled: January 20, 2015Publication date: August 6, 2015Inventor: Kei OKUMURA
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Publication number: 20150069686Abstract: 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: ApplicationFiled: November 14, 2014Publication date: March 12, 2015Inventor: Kei OKUMURA