Patents by Inventor Senri MORIYAMA
Senri MORIYAMA 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: 20240066936Abstract: A coil spring includes a wire rod including a round section portion and a flat section portion. The round section portion includes a first cross section whose cross section is round. The flat section portion includes a second cross section that is flat. The second cross section has a width greater than or equal to the diameter of the first cross section and a thickness less than the width. A polar moment of inertia of area of the second cross section is smaller than that of the first cross section. A variable section portion is formed between the round section portion and the flat section portion. The variable section portion changes its cross section from circular to flat from the round section portion towards the flat section portion.Type: ApplicationFiled: October 25, 2023Publication date: February 29, 2024Applicant: NHK SPRING CO., LTD.Inventors: Shinichi NISHIZAWA, Takeshi FURUSE, Senri MORIYAMA, Yusuke TANAKA
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Publication number: 20230392662Abstract: According to one embodiment, a coil spring includes a wire rod with a first end and a second end. The wire rod includes a round section portion including a round first cross section perpendicular to a longitudinal direction of the wire rod, a quadrangle section portion including a quadrangle a second section perpendicular to the longitudinal direction, and a variable section portion formed between the round section portion and the quadrangle section portion of the wire rod. The cross section of the variable section portion varies from circular to quadrangle from the round section portion to the quadrangle section portion. The end turn part of the coil spring includes the quadrangle section portion. The width and thickness of the second cross-section are smaller than the diameter of the first cross-section. The area of the second cross section is smaller than the area of the square inscribed in the circle of diameter of the first cross section.Type: ApplicationFiled: June 1, 2022Publication date: December 7, 2023Applicant: NHK SPRING CO., LTD.Inventors: Shinichi NISHIZAWA, Takeshi FURUSE, Senri MORIYAMA
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Patent number: 11821485Abstract: According to one embodiment, a coil spring includes a wire rod with a first end and a second end. The wire rod includes a round section portion including a round first cross section perpendicular to a longitudinal direction of the wire rod, a quadrangle section portion including a quadrangle a second section perpendicular to the longitudinal direction, and a variable section portion formed between the round section portion and the quadrangle section portion of the wire rod. The cross section of the variable section portion varies from circular to quadrangle from the round section portion to the quadrangle section portion. The end turn part of the coil spring includes the quadrangle section portion. The width and thickness of the second cross-section are smaller than the diameter of the first cross-section. The area of the second cross section is smaller than the area of the square inscribed in the circle of diameter of the first cross section.Type: GrantFiled: June 1, 2022Date of Patent: November 21, 2023Assignee: NHK SPRING CO., LTD.Inventors: Shinichi Nishizawa, Takeshi Furuse, Senri Moriyama
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Patent number: 11371575Abstract: According to an embodiment, a coil spring includes a wire rod having an end and the other end. The wire rod of the coil spring includes, with regard to a section of the wire rod, a round section portion of an effective spring part, a square section portion in which the section is substantially square, and a taper portion. The square section portion includes an end turn part. A length of each side of the section of the square section portion is less than or equal to a square root of ½ multiplied by a diameter of the wire rod of the round section portion. In the taper portion, from the round section portion to the square section portion, the section changes from a round shape to substantially a square shape, and a sectional area is decreased.Type: GrantFiled: December 7, 2020Date of Patent: June 28, 2022Assignee: NHK SPRING CO., LTD.Inventors: Shinichi Nishizawa, Senri Moriyama, Fang Dai, Takeshi Furuse
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Publication number: 20220178415Abstract: According to an embodiment, a coil spring includes a wire rod having an end and the other end. The wire rod of the coil spring includes, with regard to a section of the wire rod, a round section potion of an effective spring part, a square section portion in which the section is substantially square, and a taper portion. The square section portion includes an end turn part. A length of each side of the section of the square section portion is less than or equal to a square root of ½ multiplied by a diameter of the wire rod of the round section portion. In the taper portion, from the round section portion to the square section portion, the section changes from a round shape to substantially a square shape, and a sectional area is decreased.Type: ApplicationFiled: December 7, 2020Publication date: June 9, 2022Applicant: NHK SPRING CO., LTD.Inventors: Shinichi NISHIZAWA, Senri MORIYAMA, Fang DAI, Takeshi FURUSE
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Patent number: 10836013Abstract: A coil spring includes a helically formed wire having end turn portions at ends thereof, a plurality of first rough surfaces, each including first shot peening indentations formed on a part of a surface of the end turn portions, and a second rough surface including second shot peening indentations formed on the entire surface of the wire except for the first rough surface. The second rough surface has a surface roughness different from that of the first rough surface.Type: GrantFiled: April 12, 2019Date of Patent: November 17, 2020Assignee: NHK SPRING CO., LTD.Inventors: Senri Moriyama, Satoshi Akiyama, Masaya Komazaki, Go Nagayasu, Hideki Okada, Daisuke Yokota
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Patent number: 10807215Abstract: A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.Type: GrantFiled: August 21, 2018Date of Patent: October 20, 2020Assignee: NHK SPRING CO., LTD.Inventors: Hideki Okada, Daisuke Yokota, Senri Moriyama, Satoshi Akiyama, Masaya Komazaki, Go Nagayasu
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Publication number: 20190232462Abstract: A coil spring includes a helically formed wire having end turn portions at ends thereof, a plurality of first rough surfaces, each including first shot peening indentations formed on a part of a surface of the end turn portions, and a second rough surface including second shot peening indentations formed on the entire surface of the wire except for the first rough surface. The second rough surface has a surface roughness different from that of the first rough surface.Type: ApplicationFiled: April 12, 2019Publication date: August 1, 2019Applicant: NHK SPRING CO., LTD.Inventors: Senri MORIYAMA, Satoshi AKIYAMA, Masaya KOMAZAKI, Go NAGAYASU, Hideki OKADA, Daisuke YOKOTA
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Patent number: 10315287Abstract: A vertical motion impeller-type shot peening device performs a second shot peening to a coil spring including first shot peening indentations. The vertical motion impeller-type shot peening device includes a workpiece holding mechanism including a lower end turn support and an upper end turn support, a stress applying mechanism which compresses the coil spring, a rotation mechanism, and a projection mechanism which includes a pair of vertically movable impeller units. A first rough surface including first shot peening indentations is formed on a part of end turn portions of the coil spring. A second rough surface including second shot peening indentations is formed on the entire surface of wire except for the first rough surface.Type: GrantFiled: February 16, 2017Date of Patent: June 11, 2019Assignee: NHK SPRING CO., LTD.Inventors: Senri Moriyama, Satoshi Akiyama, Masaya Komazaki, Go Nagayasu, Hideki Okada, Daisuke Yokota
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Publication number: 20180354097Abstract: A shot peening device includes a turntable which rotates about a revolution axis, holding mechanism which moves with the turntable, pressure mechanism which compresses a coil spring, rotation mechanism which rotates the coil spring, projection mechanism which projects shots to the compressed coil spring, load cell which detects a load applied to the coil spring, and controller. A signal output from the load cell is input to the controller, and the controller detects a chronological change of the load applied to the coil spring during the shot peening.Type: ApplicationFiled: August 21, 2018Publication date: December 13, 2018Applicant: NHK SPRING CO., LTD.Inventors: Hideki OKADA, Daisuke YOKOTA, Senri MORIYAMA, Satoshi AKIYAMA, Masaya KOMAZAKI, Go NAGAYASU
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Publication number: 20180354098Abstract: A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.Type: ApplicationFiled: August 21, 2018Publication date: December 13, 2018Applicant: NHK SPRING CO., LTD.Inventors: Hideki OKADA, Daisuke YOKOTA, Senri MORIYAMA, Satoshi AKIYAMA, Masaya KOMAZAKI, Go NAGAYASU
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Patent number: 9835217Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement.Type: GrantFiled: February 12, 2015Date of Patent: December 5, 2017Assignees: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATIONInventors: Takahiro Nakamura, Kazuo Furukawa, Senri Moriyama, Ryuichi Sato, Shinichi Nishizawa
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Patent number: 9811067Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism, and a controller. The spring height detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. These gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. A hydraulic pressure supply device is controlled by the controller and supplies fluid pressure according to the displacement detected by the gauges to the respective hydraulic cylinders.Type: GrantFiled: February 12, 2015Date of Patent: November 7, 2017Assignees: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATIONInventors: Takahiro Nakamura, Kazuo Furukawa, Senri Moriyama, Ryuichi Sato, Shinichi Nishizawa
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Publication number: 20170157744Abstract: A vertical motion impeller-type shot peening device performs a second shot peening to a coil spring including first shot peening indentations. The vertical motion impeller-type shot peening device includes a workpiece holding mechanism including a lower end turn support and an upper end turn support, a stress applying mechanism which compresses the coil spring, a rotation mechanism, and a projection mechanism which includes a pair of vertically movable impeller units. A first rough surface including first shot peening indentations is formed on a part of end turn portions of the coil spring. A second rough surface including second shot peening indentations is formed on the entire surface of wire except for the first rough surface.Type: ApplicationFiled: February 16, 2017Publication date: June 8, 2017Applicant: NHK SPRING CO., LTD.Inventors: Senri MORIYAMA, Satoshi AKIYAMA, Masaya KOMAZAKI, Go NAGAYASU, Hideki OKADA, Daisuke YOKOTA
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Patent number: 9470590Abstract: A coil spring modeling apparatus includes an actuator unit formed of a Stewart-platform-type parallel mechanism, a first inner load cell accommodated in a first attachment member, a second inner load cell accommodated in a second attachment member, and a rotation support mechanism. The actuator unit is rotatably supported by the rotation support mechanism about an axis. The first inner load cell is arranged on the first seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the lower spring seat and a moment. The second inner load cell is arranged under the second seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the upper spring seat and a moment.Type: GrantFiled: February 12, 2015Date of Patent: October 18, 2016Assignees: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATIONInventors: Takahiro Nakamura, Kazuo Furukawa, Senri Moriyama, Ryuichi Sato, Shinichi Nishizawa
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Publication number: 20160238098Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement.Type: ApplicationFiled: February 12, 2015Publication date: August 18, 2016Applicants: NHK INTERNATIONAL CORPORATION, NHK SPRING CO., LTD.Inventors: Takahiro NAKAMURA, Kazuo FURUKAWA, Senri MORIYAMA, Ryuichi SATO, Shinichi NISHIZAWA
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Publication number: 20160238473Abstract: A coil spring modeling apparatus includes an actuator unit formed of a Stewart-platform-type parallel mechanism, a first inner load cell accommodated in a first attachment member, a second inner load cell accommodated in a second attachment member, and a rotation support mechanism. The actuator unit is rotatably supported by the rotation support mechanism about an axis. The first inner load cell is arranged on the first seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the lower spring seat and a moment. The second inner load cell is arranged under the second seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the upper spring seat and a moment.Type: ApplicationFiled: February 12, 2015Publication date: August 18, 2016Applicants: NHK INTERNATIONAL CORPORATION, NHK SPRING CO., LTD.Inventors: Takahiro NAKAMURA, Kazuo FURUKAWA, Senri MORIYAMA, Ryuichi SATO, Shinichi NISHIZAWA
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Publication number: 20160239004Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism, and a controller. The spring height detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. These gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. A hydraulic pressure supply device is controlled by the controller and supplies fluid pressure according to the displacement detected by the gauges to the respective hydraulic cylinders.Type: ApplicationFiled: February 12, 2015Publication date: August 18, 2016Applicants: NHK SPRING CO., LTD., NHK INTERNATIONAL CORPORATIONInventors: Takahiro NAKAMURA, Kazuo FURUKAWA, Senri MORIYAMA, Ryuichi SATO, Shinichi NISHIZAWA