Patents by Inventor Ryuta Kamiya
Ryuta Kamiya 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: 20190323574Abstract: A fiber-reinforced resin load energy-absorber has: a multi-layer woven fabric or laminated woven fabric as a reinforcement base material; a resin as a matrix; slits; binding threads; and reinforcing members. The reinforcement base material has corners formed by bending said reinforcement base material. Slits are provided at least in the portions of the reinforcement base material that form the corners. The binding threads bind each of the woven fabric layers in the multi-layer woven fabric or laminated woven fabric. The binding threads are configured so as to bind each of the woven fabric layers when the multi-layer woven fabric or laminated woven fabric is divided in the thickness direction into at least two woven fabric layers. The reinforcing members are held inside the slits.Type: ApplicationFiled: June 13, 2017Publication date: October 24, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Hiroyuki SUZUKI, Ryuta KAMIYA, Ryohei TSUJI
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Publication number: 20190300668Abstract: This fiber wound body has a plurality of reinforcing fiber yarns wound around a winding axis, each of the reinforcing fiber yarns having a thickness gradient portion in which the fiber content is uniform along the longitudinal direction of the yarn and the thickness gradually changes.Type: ApplicationFiled: June 21, 2017Publication date: October 3, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryohei TSUJI, Genki YOSHIKAWA, Shun KUNO, Ryuta KAMIYA
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Patent number: 10357937Abstract: A fiber laminate W is configured by laminating first to fourth fiber layers. The fiber laminate is provided with a taper section, in which the thickness changes depending on the position in the longitudinal direction. The first to fourth fiber layers are formed by discontinuous fibers and are configured with the orientation angles of the discontinuous fibers aligned in one direction. The orientation angles of the discontinuous fibers in the first to fourth fiber layers are different. In addition, the first to fourth fiber layers are provided with thickness changing sections, in which the thickness changes continuously while the density of fibers is kept constant irrespective of the position in the longitudinal direction. The taper section is configured by stacking the thickness changing sections. The change amount of the thickness of each thickness changing section is the same irrespective of the position in the longitudinal direction.Type: GrantFiled: June 20, 2016Date of Patent: July 23, 2019Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Genki Yoshikawa, Ryuta Kamiya
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Patent number: 10208826Abstract: An impact absorber absorbs impact energy when receiving an impact load. The impact absorber includes a fibrous structure. The fibrous structure includes a tube of which a center axis extends in a direction in which the impact load is applied and a rib that connects opposing inner surfaces of the tube. The fibrous structure is impregnated with a matrix resin. The direction in which the impact load is applied is referred to as an X direction, and a direction in which the rib connects the opposing inner surfaces of the tube is referred to as a Y direction. The tube includes a fiber layer including load direction yarns extending in the X direction and intersecting direction yarns intersecting the load direction yarns. The rib includes yarns extending only in a direction orthogonal to the X direction.Type: GrantFiled: November 20, 2015Date of Patent: February 19, 2019Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta Kamiya
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Publication number: 20180371651Abstract: A fabric laminate used as a reinforcing base material of a fiber-reinforced composite is constituted by laminating fabrics having warp yarns and weft yarns. Each warp yarn has a diameter-changing portion, in which the diameter of the yarn gradually changes in the yarn longitudinal direction in the vicinity of one end in the yarn longitudinal direction of the warp yarn.Type: ApplicationFiled: December 8, 2016Publication date: December 27, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Genki YOSHIKAWA, Ryuta KAMIYA, Shun KUNO
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Publication number: 20180355128Abstract: A fiber structure for a fiber-reinforced composite material includes a section in which a width varies continuously along a central axis in a plan view. In a section in which the width increases continuously along the central axis, discontinuous fibers are aligned radially along the central axis, and both a thickness of the fiber structure and a density of the discontinuous fibers are uniform.Type: ApplicationFiled: September 14, 2016Publication date: December 13, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Genki YOSHIKAWA, Ryuta KAMIYA
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Publication number: 20180320296Abstract: A multilayer fabric includes a binding portion in which weft fiber layers stacked in a thickness-wise direction are all bound by warps and a non-binding portion including a slit where a fifth fiber layer and a seventh fiber layer, which are the weft fiber layers, are not bound by warps. The multilayer fabric includes an intersection formed at a boundary of the binding portion and the non-binding portion. The intersection is formed by intersecting the warps that are adjacent in a second direction.Type: ApplicationFiled: September 30, 2016Publication date: November 8, 2018Applicant: Kabushiki Kaisha Toyota JidoshokkiInventors: Hiroyuki TAKEI, Ryuta KAMIYA
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Publication number: 20180313005Abstract: A fiber structure includes a first laminate and a second laminate, which are arranged such that the yarn main axes of first reinforcement fiber yarns and second reinforcement fiber yarns are caused to be orthogonal to each other and that the main yarn axes of first auxiliary yarns and second auxiliary yarns are caused to be orthogonal to each other. The engagement of first intermediate structure yarns of the first laminate and second intermediate structure yarns of the second laminate joins the first laminate and the second laminate together in the lamination direction.Type: ApplicationFiled: October 27, 2016Publication date: November 1, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Mari KAWAHARA, Ryuta KAMIYA
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Publication number: 20180251918Abstract: A fiber structure includes a first fiber layer including first reinforcement fiber bundles extending in a first yarn main axis direction, a second fiber layer including second reinforcement fiber bundles extending in a second yarn main axis direction that is orthogonal to the first yarn main axis direction, and auxiliary yarns that join the first fiber layer with the second fiber layer in a stacking direction of the first fiber layer and the second fiber layer. At least either one of the first reinforcement fiber bundles and the second reinforcement fiber bundles each include a core yarn and a covering yarn spirally wound around the core yarn. A covering angle, which is an orientation angle of the covering yarn, corresponds to a direction that differs from the first yarn main axis direction and the second yarn main axis direction.Type: ApplicationFiled: August 16, 2016Publication date: September 6, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta KAMIYA
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Publication number: 20180194098Abstract: A fiber laminate W is configured by laminating first to fourth fiber layers. The fiber laminate is provided with a taper section, in which the thickness changes depending on the position in the longitudinal direction. The first to fourth fiber layers are formed by discontinuous fibers and are configured with the orientation angles of the discontinuous fibers aligned in one direction. The orientation angles of the discontinuous fibers in the first to fourth fiber layers are different. In addition, the first to fourth fiber layers are provided with thickness changing sections, in which the thickness changes continuously while the density of fibers is kept constant irrespective of the position in the longitudinal direction. The taper section is configured by stacking the thickness changing sections. The change amount of the thickness of each thickness changing section is the same irrespective of the position in the longitudinal direction.Type: ApplicationFiled: June 20, 2016Publication date: July 12, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Genki YOSHIKAWA, Ryuta KAMIYA
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Patent number: 9840062Abstract: A fiber-reinforced composite material has a fabric base material including laminated obliquely-crossed fabric layers, each of which is configured by weaving first and second reinforced fiber bundles, which obliquely cross each other. In adjacent two of the fabric layers, one of an orientation of the first reinforced fiber bundles and an orientation of the second reinforced fiber bundles in one fabric layer is the same as one of an orientation of the first reinforced fiber bundles and an orientation of the second reinforced fiber bundles of the other fabric layer. A single-orientation layer is placed between the adjacent fabric layers such that an orientation of fiber bundles of the single-orientation layer is the same as an orientation of reinforced fiber bundles having the same orientation as each other in the adjacent fabric layers.Type: GrantFiled: October 29, 2014Date of Patent: December 12, 2017Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta Kamiya
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Publication number: 20170328435Abstract: An impact absorber absorbs impact energy when receiving an impact load. The impact absorber includes a fibrous structure. The fibrous structure includes a tube of which a center axis extends in a direction in which the impact load is applied and a rib that connects opposing inner surfaces of the tube. The fibrous structure is impregnated with a matrix resin. The direction in which the impact load is applied is referred to as an X direction, and a direction in which the rib connects the opposing inner surfaces of the tube is referred to as a Y direction. The tube includes a fiber layer including load direction yarns extending in the X direction and intersecting direction yarns intersecting the load direction yarns. The rib includes yarns extending only in a direction orthogonal to the X direction.Type: ApplicationFiled: November 20, 2015Publication date: November 16, 2017Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta KAMIYA
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Publication number: 20170268137Abstract: A fibrous structure includes a main plate and a sub-plate. The main plate, which is formed by a multi-layer textile, includes a plurality of stacked fiber layers. Each fiber layer includes main plate warps and main plate wefts. The sub-plate, which is formed by a multi-layer textile, includes a plurality of stacked fiber layers. Each fiber layer includes sub-plate warps and sub-plate wefts. The main plate and the sub-plate are integrally woven with each other in a state intersecting each other. The main plate wefts and the sub-plate wefts have a smaller volume density at an intersecting portion where the main plate and the sub-plate intersect than a portion separate from the intersecting portion.Type: ApplicationFiled: November 5, 2015Publication date: September 21, 2017Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta KAMIYA
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Patent number: 9539789Abstract: A three-dimensional fiber-reinforced composite includes a laminate having a plurality of fiber bundle layers that are layered in a lamination direction and include first and second outermost layers, a matrix resin; and a binding yarn. The binding yarn has first and second traverse yarn sections, and a surface-layer yarn section. The surface layer yarn section has bifurcated sections extending in opposite directions from the first and second traverse yarn sections on the surface of the second outermost layer. An additive and the matrix resin are arranged in a space enclosed by the bifurcated sections and the fiber bundles of the second outermost layer adjacent to the bifurcated sections, and also in a space between each of the first and second traverse yarn sections and fiber bundles adjacent thereto, and in a space between the first and second traverse yarn sections.Type: GrantFiled: August 8, 2013Date of Patent: January 10, 2017Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiko Yasue, Ryohei Tsuji, Ryuta Kamiya, Makoto Tsuzuki
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Publication number: 20160288454Abstract: A fiber-reinforced composite material has a fabric base material including laminated obliquely-crossed fabric layers, each of which is configured by weaving first and second reinforced fiber bundles, which obliquely cross each other. In adjacent two of the fabric layers, one of an orientation of the first reinforced fiber bundles and an orientation of the second reinforced fiber bundles in one fabric layer is the same as one of an orientation of the first reinforced fiber bundles and an orientation of the second reinforced fiber bundles of the other fabric layer. A single-orientation layer is placed between the adjacent fabric layers such that an orientation of fiber bundles of the single-orientation layer is the same as an orientation of reinforced fiber bundles having the same orientation as each other in the adjacent fabric layers.Type: ApplicationFiled: October 29, 2014Publication date: October 6, 2016Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta KAMIYA
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Patent number: 9415566Abstract: A three-dimensional fiber-reinforced composite includes a laminate having fiber bundle layers that are laminated in the laminating direction and include first and second outermost layers, primary and secondary retention yarns, and a binding yarn. The binding yarn includes a fold-back section, primary and secondary traverse yarn sections, a surface yarn section that extends along the surface of the second outermost layer in the direction substantially perpendicular to the secondary retention yarn, and a bifurcated section that is formed on the surface of the second outermost layer and connected to the primary and secondary traverse yarn sections. The bifurcated section is formed by crossing the surface yarn section that extends in opposite directions in the outside in the laminating direction of the secondary retention yarn.Type: GrantFiled: August 20, 2013Date of Patent: August 16, 2016Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta Kamiya
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Patent number: 9302445Abstract: A fiber-reinforced composite material (11) is constructed by laminating a plurality of fiber bundle layers formed of a reinforced fiber to form a laminated fiber bundle layer and further impregnating the laminated fiber bundle layer with a matrix. At either side of a neutral surface (16), the number of +? layers which are fiber bundle layers having a fiber orientation angle of +? and the number of ?? layers which are fiber bundle layers having a fiber orientation angle of ?? are the same, the order of laminating the fiber bundle layers is inversely symmetrical with respect to the standard surface, and the number of other fiber bundle layers disposed between the +? and ?? layers at either side of the standard surface is the same.Type: GrantFiled: May 10, 2012Date of Patent: April 5, 2016Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryuta Kamiya, Ryohei Tsuji, Shun Kuno
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Publication number: 20150299913Abstract: A tubular fiber structure, which includes a tubular section and a flange section that is on at least one end of the tubular section and which is formed by shaping a wound fabric base material.Type: ApplicationFiled: October 24, 2013Publication date: October 22, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fujio HORI, Ryuta KAMIYA
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Publication number: 20150246505Abstract: A three-dimensional fiber-reinforced composite includes a laminate having a plurality of fiber bundle layers that are layered in a lamination direction and include first and second outermost layers, a matrix resin; and a binding yarn. The binding yarn has first and second traverse yarn sections, and a surface-layer yarn section. The surface layer yarn section has bifurcated sections extending in opposite directions from the first and second traverse yarn sections on the surface of the second outermost layer. An additive and the matrix resin are arranged in a space enclosed by the bifurcated sections and the fiber bundles of the second outermost layer adjacent to the bifurcated sections, and also in a space between each of the first and second traverse yarn sections and fiber bundles adjacent thereto, and in a space between the first and second traverse yarn sections.Type: ApplicationFiled: August 20, 2013Publication date: September 3, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiko Yasue, Ryohei Tsuji, Ryuta Kamiya, Makoto Tsuzuki
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Publication number: 20150224737Abstract: A three-dimensional fiber-reinforced composite includes a laminate having fiber bundle layers that are laminated in the laminating direction and include first and second outermost layers, primary and secondary retention yarns, and a binding yarn. The binding yarn includes a fold-back section, primary and secondary traverse yarn sections, a surface yarn section that extends along the surface of the second outermost layer in the direction substantially perpendicular to the secondary retention yarn, and a bifurcated section that is formed on the surface of the second outermost layer and connected to the primary and secondary traverse yarn sections. The bifurcated section is formed by crossing the surface yarn section that extends in opposite directions in the outside in the laminating direction of the secondary retention yarn.Type: ApplicationFiled: August 20, 2013Publication date: August 13, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Ryuta Kamiya