Patents by Inventor Mototaka Iwata
Mototaka Iwata 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: 10933441Abstract: 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.Type: GrantFiled: July 22, 2019Date of Patent: March 2, 2021Assignees: MIZUNO CORPORATION, MIZUNO TECHNICS CORPORATIONInventors: Mototaka Iwata, Akiyoshi Utsumi
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Patent number: 10730246Abstract: 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.Type: GrantFiled: March 24, 2017Date of Patent: August 4, 2020Assignees: Mizuno Corporatioon, Mizuno Technics CorporationInventors: Mototaka Iwata, Katsuyuki Aizawa
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Publication number: 20190337011Abstract: 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.Type: ApplicationFiled: July 22, 2019Publication date: November 7, 2019Inventors: Mototaka Iwata, Akiyoshi Utsumi
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Patent number: 10399114Abstract: 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.Type: GrantFiled: October 12, 2016Date of Patent: September 3, 2019Assignees: Mizuno Corporation, Mizuon Technics CorporationInventors: Mototaka Iwata, Akiyoshi Utsumi
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Publication number: 20170274603Abstract: 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.Type: ApplicationFiled: March 24, 2017Publication date: September 28, 2017Inventors: Mototaka Iwata, Katsuyuki Aizawa
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Publication number: 20170106405Abstract: 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.Type: ApplicationFiled: October 12, 2016Publication date: April 20, 2017Applicants: Mizuno Corporation, Mizuno Technics CorporationInventors: Mototaka Iwata, Akiyoshi Utsumi
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Publication number: 20150224380Abstract: A measurement system capable of easily notifying a subject of characteristics of motion during swing is provided. A measurement system for measuring motion of a subject includes a detection unit attached to a lower back portion of the subject, which is capable of obtaining motion information on motion of the lower back portion during swing by the subject, a processing unit finding an evaluation parameter for a swing by the subject based on the motion information obtained by the detection unit, and an output unit outputting the evaluation parameter found by the processing unit.Type: ApplicationFiled: February 9, 2015Publication date: August 13, 2015Inventors: Mototaka Iwata, Takeshi Naruo, Yuichi Shimizu, Shohei Shibata, Makoto Uchishima
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Publication number: 20090011877Abstract: A bat for baseball or softball includes a core member having a depression at a portion to be a ball-hitting portion, and an elastic body attached to the depression and forming the ball-hitting portion. The elastic body is formed of urethane elastomeric foam having specific gravity of at least 0.45 and at most 0.60, JIS C hardness of at least 54 and at most 82, and modulus of elasticity in 300% elongation of at least 3.85 MPa and at most 5.6 MPa.Type: ApplicationFiled: June 12, 2008Publication date: January 8, 2009Applicant: Mizuno CorporationInventors: Mototaka Iwata, Takashi Ono, Toshiaki Kida
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Patent number: 7131913Abstract: A groove is provided a surface on a cavity portion side of a sole portion in a head portion of an iron golf club, and a thickness of a ball hitting portion in a face portion is made larger than a thickness of a top edge side portion of the face portion and at least as large as a thickness of a sole side portion of the face portion. In a golf club set according to the present invention, the groove has the greatest depth in a long iron golf club, while the groove has the smallest depth in a short iron golf club or no groove is provided in the short iron golf club.Type: GrantFiled: January 14, 2004Date of Patent: November 7, 2006Assignee: Mizuno CorporationInventors: Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen
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Patent number: 6899638Abstract: The inventive golf club comprises a head of a metal having a face and a flexural range, defined in the face, where the quantity of flexure in a direction perpendicular to the face is at least 45% of the maximum quantity of vertical flexure of the face. The flexural range is arranged in coincidence with a hitting spot distribution range of a player in the face. Alternatively, a flexural range having a spring constant of at least 2 kN/mm and not more than 4 kN/mm is present in the face of the inventive golf club.Type: GrantFiled: April 30, 2001Date of Patent: May 31, 2005Assignee: Mizuno CorporationInventors: Mototaka Iwata, Kenji Onoda, Koji Sakai, Yukihiro Teranishi, Takeshi Naruo, Kazuhiro Ohmori, Yoshihiro Fujikawa
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Publication number: 20040147335Abstract: A groove is provided a surface on a cavity portion side of a sole portion in a head portion of an iron golf club, and a thickness of a ball hitting portion in a face portion is made larger than a thickness of a top edge side portion of the face portion and at least as large as a thickness of a sole side portion of the face portion. In a golf club set according to the present invention, the groove has the greatest depth in a long iron golf club, while the groove has the smallest depth in a short iron golf club or no groove is provided in the short iron golf club.Type: ApplicationFiled: January 14, 2004Publication date: July 29, 2004Inventors: Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen
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Patent number: 6709345Abstract: A groove is provided a surface on a cavity portion side of a sole portion in a head portion of an iron golf club, and a thickness of a ball hitting portion in a face portion is made larger than a thickness of a top edge side portion of the face portion and at least as large as a thickness of a sole side portion of the face portion. In a golf club set according to the present invention, the groove has the greatest depth in a long iron golf club, while the groove has the smallest depth in a short iron golf club or no groove is provided in the short iron golf club.Type: GrantFiled: October 12, 2001Date of Patent: March 23, 2004Assignee: Mizuno CorporationInventors: Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie
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Patent number: 6695712Abstract: A golf club head (11) has an ellipsoid of inertia (12) with its center at a center of gravity G. When the ellipsoid of inertia (12) is virtually cut with a plane passing through the center of gravity of the golf club head (11) and being parallel to a face surface (11f), a major axis of a plane ellipse (13) appearing on its cut surface forms an angle of &thgr; with an intersecting line (15) of the cut surface and a ground surface (16). The major axis extends upward and away from the ground surface (16) as it approaches a toe part (11t). The angle &thgr; is not smaller than 0.5° and not larger than 9.5°. An aspect ratio a/b defined by a ratio of the length a of the major axis (13d) to the length b of a minor axis (13e) of the plane ellipse (13) is not smaller than 1 and not larger than 4.Type: GrantFiled: December 1, 2000Date of Patent: February 24, 2004Assignee: Mizuno CorporationInventors: Mototaka Iwata, Hiroshi Nagao, Kanta Shimotaka, Kei Tsuji, Koji Sakai, Takashi Kimura
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Patent number: 6666779Abstract: A golf club according to the present invention comprises a face portion (1) and a neck portion (2), and metal flow lines (3) continue from the face portion (1) to the neck portion (2). These metal flow lines (3) extend in a single direction on the face portion (1). A method of manufacturing a golf club according to the present invention comprises steps of bending a rod member subjected to drawing plastic working on an end and forging the rod member after the bending for integrally molding a face portion (1) and a neck portion (2).Type: GrantFiled: August 2, 2001Date of Patent: December 23, 2003Assignees: Mizuno Corporation, Chuo Industries, Ltd.Inventors: Mototaka Iwata, Kiyotaka Chaen, Isamu Toshinari, Kenji Kanegawa
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Publication number: 20030050134Abstract: A golf club includes a head formed of metal and having a face with a center having an average crystal grain size smaller at a rear side than at a front side. The face as seen in cross section has a first region having a relatively large average crystal grain size and a second region having a relatively small average crystal grain size. The second region extends from the center at the rear side to a periphery at the front side.Type: ApplicationFiled: August 26, 2002Publication date: March 13, 2003Inventor: Mototaka Iwata
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Patent number: 6431355Abstract: A core (3) for a caddie bag includes three arc portions (31 to 33) each with a PCCP structure. These arc portions are connected by a hinge portion (34) without the PCCP structure, and the hinge portion is bent to form a cylindrical core. The cylindrical core has one end with a collar (5) attached thereto, and the other end with a bottom member (6) attached thereto. The collar and the bottom member are connected by a frame member (12), whereby a caddie bag (1) is constructed.Type: GrantFiled: September 13, 1999Date of Patent: August 13, 2002Assignee: Mizuno CorporationInventors: Koryo Miura, Satoshi Yoshida, Mototaka Iwata
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Publication number: 20020082118Abstract: At least a part of a head portion of a golf club consists of stainless steel containing throughout 0.1% or more to 0.3% or less by weight of nitrogen. Further, at least a part of the head portion consists of a corrosion-resistant metal having a yield strength of 0.2% of 350 MPa or more to 600 MPa or less, a tensile strength of 500 MPa or more to 800 MPa or less and an elongation after fracture of 40% or more to 60% or less.Type: ApplicationFiled: October 4, 2001Publication date: June 27, 2002Inventors: Mototaka Iwata, Kiyotaka Chaen
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Patent number: D504167Type: GrantFiled: October 7, 2003Date of Patent: April 19, 2005Assignee: Mizuno CorporationInventors: Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen
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Patent number: D508722Type: GrantFiled: September 9, 2003Date of Patent: August 23, 2005Assignee: Mizuno CorporationInventors: Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen
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Patent number: D547817Type: GrantFiled: October 11, 2006Date of Patent: July 31, 2007Assignee: Mizuno CorporationInventors: Mototaka Iwata, Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen