Patents by Inventor Miho Nakazono
Miho Nakazono 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: 9212714Abstract: A fiber reinforced plastic spring is provided, in which broken pieces can be prevented from being scattered when breaking without using any additional member and variation in load when breaking can be reduced. FRP spring has a layered structure having basic unit consisting of a positive direction orientating layer and a negative direction orientating layer 22. By appropriately setting an absolute value of orientating angles of each layer, fibers in the positive direction orientating layer and the negative direction orientating layer can be entangled mutually, and thus, the spring as a whole exhibits pseudo-ductility in a breakage condition. Elastic modulus and strength available for use as a spring can be obtained and breaking at a resin portion between fibers can be prevented in each layer.Type: GrantFiled: February 27, 2012Date of Patent: December 15, 2015Assignee: NHK SPRING CO., LTD.Inventors: Ryohei Shigematsu, Miho Nakazono
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Patent number: 9174558Abstract: A seat operating device comprising: an operation member; a first clutch member that is connected to an adjusting mechanism, and in which is formed a first cut-out portion that opens outwardly in a rotation radial direction of the first clutch member; a second clutch member that is connected to another adjusting mechanism, and in which is formed a second cut-out portion that opens outwardly in a rotation radial direction of the second clutch member; and a switching member having a first engaging portion and a second engaging portion that are positioned at mutually opposite sides across a rotational center. When the switching member is positioned at one end of a range of movement of the switching member, the first engaging portion engages with the first cut-out portion, and, when the switching member is positioned at another end of the range of movement, the second engaging portion engages with the second cut-out portion.Type: GrantFiled: April 1, 2014Date of Patent: November 3, 2015Assignee: NHK SPRING CO., LTD.Inventors: Ryohei Shigematsu, Takafumi Hirata, Miho Nakazono, Takeshi Nakamura, Hiroshi Yagame, Hironobu Okamura
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Patent number: 8864117Abstract: A fiber reinforced plastic spring which enables prevention of breakage caused by compressive stress is provided, including a FRP spring that has a laminated structure having plural fibers which are different from each other in tensile modulus of elasticity and are laminated. An upper surface of the FRP spring is a surface to which a pulsating bending load is applied. An upper side region of each laminated structure is a compressive stress region at which compressive stress is generated. A lower side region of each laminated structure is a tensile stress region at which tensile stress is generated. Distribution of tensile modulus of elasticity of each laminated structure is asymmetric with respect to the neutral axis.Type: GrantFiled: May 9, 2011Date of Patent: October 21, 2014Assignee: NHK Spring Co., Ltd.Inventors: Ryohei Shigematsu, Miho Nakazono
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Publication number: 20140300160Abstract: A seat operating device comprising: an operation member; a first clutch member that is connected to an adjusting mechanism, and in which is formed a first cut-out portion that opens outwardly in a rotation radial direction of the first clutch member; a second clutch member that is connected to another adjusting mechanism, and in which is formed a second cut-out portion that opens outwardly in a rotation radial direction of the second clutch member; and a switching member having a first engaging portion and a second engaging portion that are positioned at mutually opposite sides across a rotational center. When the switching member is positioned at one end of a range of movement of the switching member, the first engaging portion engages with the first cut-out portion, and, when the switching member is positioned at another end of the range of movement, the second engaging portion engages with the second cut-out portion.Type: ApplicationFiled: April 1, 2014Publication date: October 9, 2014Applicant: NHK SPRING CO., LTD.Inventors: Ryohei Shigematsu, Takafumi Hirata, Miho Nakazono, Takeshi Nakamura, Hiroshi Yagame, Hironobu Okamura
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Publication number: 20140001688Abstract: A fiber reinforced plastic spring is provided, in which broken pieces can be prevented from being scattered when breaking without using any additional member and variation in load when breaking can be reduced. FRP spring has a layered structure having basic unit consisting of a positive direction orientating layer and a negative direction orientating layer 22. By appropriately setting an absolute value of orientating angles of each layer, fibers in the positive direction orientating layer and the negative direction orientating layer can be entangled mutually, and thus, the spring as a whole exhibits pseudo-ductility in a breakage condition. Elastic modulus and strength available for use as a spring can be obtained and breaking at a resin portion between fibers can be prevented in each layer.Type: ApplicationFiled: February 27, 2012Publication date: January 2, 2014Applicant: NHK SPRING CO., LTD.Inventors: Ryohei Shigematsu, Miho Nakazono
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Publication number: 20130049273Abstract: A fiber reinforced plastic spring which enables prevention of breakage caused by compressive stress is provided. The FRP spring 1 has a laminated structure (reference numeral 20 in case of three-layer structure, reference numeral 30 in case of five-layer structure) having plural fibers which are different from each other in tensile modulus of elasticity and are laminated. An upper surface of the FRP spring 1 is a surface to which pulsating bending load is applied. An upper side region of each laminated structure 20 and 30, which is upper with respect to the neutral axis S, is a compressive stress region at which compressive stress is generated. A lower side region of each laminated structure 20 and 30, which is lower with respect to the neutral axis S, is a tensile stress region at which tensile stress is generated. Distribution of tensile modulus of elasticity of each laminated structure 20 and 30 is asymmetric with respect to the neutral axis S.Type: ApplicationFiled: May 9, 2011Publication date: February 28, 2013Applicant: NHK SPRING CO., LTD.Inventors: Ryohei Shigematsu, Miho Nakazono