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公开(公告)号：US20200071863A1
公开(公告)日：2020-03-05
申请号：US16537501
申请日：2019-08-09
Applicant: MAZDA MOTOR CORPORATION , MIZUNO TECHNICS CORPORATION
Inventor： Kohya NAKAGAWA , Kiyoshi FUJIWARA , Kazuhisa TO , Chikara TANAKA , Takahiro ATSUMI , Hiroki ASHIDA
Abstract: Provided is a fiber reinforced plastic member made by a braiding technique to obtain high rigidity and superior vibration damping performance under a bending load. A reinforcing member made of carbon fiber reinforced plastic resin extends in a specific direction along an axis of the reinforcing member and includes a carbon fiber braided structure. The carbon fiber braided structure has a structure in which a plurality of axial yarns, a plurality of first braid yarns, and a plurality of second braid yarns are braided. A plurality of first braid yarns are wound to intersect the axis at a first braid angle. A plurality of second braid yarns are wound to intersect the axis at a second braid angle. The first braid yarns and the second braid yarns intersect each other. The reinforcing member has a region approximately in the longitudinal middle where the first braid angle and the second braid angle of the first braid yarns and the second braid yarns take values larger than in other region regarding the longitudinal direction.
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公开(公告)号：US12275611B2
公开(公告)日：2025-04-15
申请号：US17368964
申请日：2021-07-07
Inventor： Yoshinori Yamamoto , Daisuke Tanaka , Akiyoshi Utsumi
Abstract: A fiber bundle winding device includes: a traverse guide configured to guide a fiber bundle to a bobbin; and a controller configured to control the traverse guide according to a rotation of the bobbin. The traverse guide is movable parallel to a center axis of the bobbin. The controller can perform: first movement control that moves the traverse guide to wind the fiber bundle onto the bobbin in a predetermined first area extending in a direction of the center axis of the bobbin; and second movement control that moves the traverse guide to wind the fiber bundle onto the bobbin in a second area being smaller than the first area and having ends that are located within the first area and at different positions from respective ends of the first area. The first movement control and second movement control are performed at a ratio of N:1 (N is an integer more than 1).
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公开(公告)号：US10933441B2
公开(公告)日：2021-03-02
申请号：US16518784
申请日：2019-07-22
Applicant: Mizuno Corporation , Mizuno Technics Corporation
Inventor： Mototaka Iwata , Akiyoshi Utsumi
Abstract: A tow prepreg manufacturing apparatus applies resin to an original tow of reinforcing fibers. The tow prepreg manufacturing apparatus includes an oiling roller, a scraper, a resin reservoir, a tube pump, and a controller. The oiling roller is supplied with resin while rotating at a predetermined rotation speed. The scraper adjusts the shape of the resin supplied onto the oiling roller. The resin reservoir supplies resin to the oiling roller. The tube pump discharges resin to the resin reservoir. The controller controls the tube pump so that the amount of resin held in the resin reservoir remains constant and controls the rotation speed of the oiling roller so that a resin content of a wound tow prepreg becomes equal to a target resin content.
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公开(公告)号：US10399114B2
公开(公告)日：2019-09-03
申请号：US15291889
申请日：2016-10-12
Applicant: Mizuno Corporation , Mizuno Technics Corporation
Inventor： Mototaka Iwata , Akiyoshi Utsumi
Abstract: A tow prepreg manufacturing apparatus applies resin to an original tow of reinforcing fibers. The tow prepreg manufacturing apparatus includes an oiling roller, a scraper, a resin reservoir, a tube pump, and a controller. The oiling roller is supplied with resin while rotating at a predetermined rotation speed. The scraper adjusts the shape of the resin supplied onto the oiling roller. The resin reservoir supplies resin to the oiling roller. The tube pump discharges resin to the resin reservoir. The controller controls the tube pump so that the amount of resin held in the resin reservoir remains constant and controls the rotation speed of the oiling roller so that a resin content of a wound tow prepreg becomes equal to a target resin content.
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公开(公告)号：US20240199852A1
公开(公告)日：2024-06-20
申请号：US18287212
申请日：2022-06-01
Applicant: MIZUNO CORPORATION , MIZUNO TECHNICS CORPORATION , THE UNIVERSITY OF TOKYO
Inventor： Yoshihiro FUJIKAWA , Yuri NAKA , Yasushi MATSUI , Ichiro SAKATA , Bunshi FUGETSU , Takayuki UEKI
CPC classification number: C08K9/04 , C08J3/12 , C08J5/045 , C08K3/36 , C08J2301/02
Abstract: A method includes: preparing a dispersion liquid by mixing a silicon-based porous material into an aqueous solvent in which cellulose nanofibers are dispersed; producing a dried material by drying the dispersion liquid; and producing a composite powder by grinding the dried material. A content ratio of the cellulose nanofibers and the silicon-based porous material in the dispersion liquid is 1:5 to 1:20 on a mass basis. A relationship of the following expression (1) is satisfied,
[
Math
.
1
]
Y
≤
-
0
.
0
4
8
X
+
1
.96
(
1
)
where X (in parts by mass) is a content of the silicon-based porous material relative to 1 part by mass of the cellulose nanofibers contained in the dispersion liquid and Y (in % by mass) is a concentration of the cellulose nanofibers.-
Patent Agency Ranking
公开(公告)号：US10730246B2
公开(公告)日：2020-08-04
申请号：US15469263
申请日：2017-03-24
Applicant: MIZUNO CORPORATION , MIZUNO TECHNICS CORPORATION
Inventor： Mototaka Iwata , Katsuyuki Aizawa
IPC: B29C70/20 , F16L9/12 , B32B5/12 , B32B37/20 , B32B1/02 , B29C70/30 , B32B15/14 , B32B5/26 , B32B27/12 , F16L9/128 , B29C53/58 , B29C70/32 , B32B1/08 , B32B7/03 , F16L9/16 , B29K63/00 , B29K307/04 , B29L23/00 , B29L31/00
Abstract: A fiber-reinforced member includes: a base member having a tubular region with an outer circumferential surface extending along and substantially in parallel with an axial direction; and a fiber-reinforced resin layer constituted of a tow prepreg wound in an overlapping manner to cover the outer circumferential surface of the base member along a predetermined direction crossing the axial direction when viewed in a radial direction of the base member, the tow prepreg serving as a widened tape-like member. The tape-like member constituting the fiber-reinforced resin layer has a portion having a fiber line extending along a direction crossing the predetermined direction. A size of a width of the tape-like member constituting the fiber-reinforced resin layer is not less than 100 times and not more than 400 times as large as a size of a thickness of the tape-like member constituting the fiber-reinforced resin layer in the radial direction.
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公开(公告)号：US10434385B2
公开(公告)日：2019-10-08
申请号：US16037043
申请日：2018-07-17
Applicant: Mizuno Technics Corporation , Mizuno Corporation
Inventor： Takayuki Mine , Tetsuya Oono , Tatsuya Wakako , Kei Tsuji
Abstract: A golf club head includes a face, a sole, and a weight member. The sole includes a guide groove having a plurality of positioning grooves. The weight member includes a plurality of protrusions, and is positioned in the guide groove with the plurality of protrusions engaging with the plurality of positioning grooves. The plurality of positioning grooves each include a pair of sidewalls formed in an arc shape and a bottom connecting the sidewalls to each other. The plurality of protrusions each include a pair of side surfaces formed in an arc shape and a ridge connecting the side surfaces to each other.
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公开(公告)号：US20170274603A1
公开(公告)日：2017-09-28
申请号：US15469263
申请日：2017-03-24
Applicant: MIZUNO CORPORATION , MIZUNO TECHNICS CORPORATION
Inventor： Mototaka Iwata , Katsuyuki Aizawa
Abstract: A fiber-reinforced member includes: a base member having a tubular region with an outer circumferential surface extending along and substantially in parallel with an axial direction; and a fiber-reinforced resin layer constituted of a tow prepreg wound in an overlapping manner to cover the outer circumferential surface of the base member along a predetermined direction crossing the axial direction when viewed in a radial direction of the base member, the tow prepreg serving as a widened tape-like member. The tape-like member constituting the fiber-reinforced resin layer has a portion having a fiber line extending along a direction crossing the predetermined direction. A size of a width of the tape-like member constituting the fiber-reinforced resin layer is not less than 100 times and not more than 400 times as large as a size of a thickness of the tape-like member constituting the fiber-reinforced resin layer in the radial direction.
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公开(公告)号：US20240165891A1
公开(公告)日：2024-05-23
申请号：US18551501
申请日：2022-02-14
Applicant: MIZUNO TECHNICS CORPORATION , MAZDA MOTOR CORPORATION
Inventor： Takeshi SAITO , Makoto HIROSE , Takumi KASHIMA , Hiroki YANO , Chikara TANAKA , Tomohito OKUYAMA , Taei SHIBAHARA , Masaki MOTOKI
CPC classification number: B29C66/71 , B29C35/0288 , B29C35/049 , B32B5/12
Abstract: A tubular body (1) made of a fiber-reinforced plastic and used as a structural material of a vehicle includes corners (4) extending along an axis of the tubular body (1) on an outer circumferential surface thereof. The tubular body (1) is a tubular laminate that is formed by laminating a fabric layer (12) formed by laminating fabric materials and unidirectional material layers (11, 13). Each fabric material includes a fabric in which reinforcing fibers are woven and a plastic with which the fabric is impregnated. Each unidirectional material layer (11, 13) includes reinforcing fibers oriented in one direction and a plastic with which the reinforcing fibers are impregnated. The reinforcing fibers of each unidirectional material layer (11, 13) are oriented along the axis of the tubular laminate. The unidirectional material layers (11, 13) include an outer unidirectional material layer (13) laminated on an outer circumferential surface of the fabric layer (12), and an inner unidirectional material layer (11) laminated on an inner circumferential surface of the fabric layer.
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公开(公告)号：US20190022481A1
公开(公告)日：2019-01-24
申请号：US16037043
申请日：2018-07-17
Applicant: Mizuno Technics Corporation , Mizuno Corporation
Inventor： Takayuki Mine , Tetsuya Oono , Tatsuya Wakako , Kei Tsuji
Abstract: A golf club head includes a face, a sole, and a weight member. The sole includes a guide groove having a plurality of positioning grooves. The weight member includes a plurality of protrusions, and is positioned in the guide groove with the plurality of protrusions engaging with the plurality of positioning grooves. The plurality of positioning grooves each include a pair of sidewalls formed in an arc shape and a bottom connecting the sidewalls to each other. The plurality of protrusions each include a pair of side surfaces formed in an arc shape and a ridge connecting the side surfaces to each other.
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