Patents Assigned to Mikasa Corporation
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Patent number: 11071891Abstract: Provided is a method for manufacturing an exercise ball which is made by using a pasted ball such as a soft leather ball and which has a lower impact value compared to a conventional yarn-wound ball. The exercise ball comprises a spherical hollow rubber bladder (2) in which compressed air is sealed, and a yarn-wound reinforcement layer (3) formed by evenly winding a filament yarn around the surface of the rubber bladder, wherein the exercise ball is characterized in that nylon filament yarn, obtained by hard twisting two 30-50 denier nylon filaments 1-a, 1-b in a single-direction twist is used as a winding yarn (1).Type: GrantFiled: October 12, 2018Date of Patent: July 27, 2021Assignee: MIKASA CORPORATIONInventors: Takashi Fujikura, Yukio Sunamori, Akinori Hamamoto
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Publication number: 20200330831Abstract: Provided is a method for manufacturing an exercise ball which is made by using a pasted ball such as a soft leather ball and which has a lower impact value compared to a conventional yarn-wound ball. The exercise ball comprises a spherical hollow rubber bladder (2) in which compressed air is sealed, and a yarn-wound reinforcement layer (3) formed by evenly winding a filament yarn around the surface of the rubber bladder, wherein the exercise ball is characterized in that nylon filament yarn, obtained by hard twisting two 30-50 denier nylon filaments 1-a, 1-b in a single-direction twist is used as a winding yarn (1).Type: ApplicationFiled: October 12, 2018Publication date: October 22, 2020Applicant: MIKASA CORPORATIONInventors: Takashi FUJIKURA, Yukio SUNAMORI, Akinori HAMAMOTO
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Patent number: 8801553Abstract: There is provided a sports ball capable of relieving the pain of the hands suffered from impact on the ball and having a soft feel and high flexibility. The sports ball comprises a spherical hollow rubber bladder (2) inflated with air injected into it, a fabric tape reinforcement layer (3) formed by winding a narrow adhesive-impregnated fabric tape (7) around a central spherical portion (6) of the rubber bladder about each of three axes of the rubber bladder with the exception of opposite spherical end portions (5) of the rubber bladder, whereby the fabric tape reinforcement layer is formed as orthogonal lap windings of the fabric tape over substantially all of the spherical surface of the rubber bladder, to provide a fabric tape wound ball core, and surface panels (4) adhered with adhesive to the fabric tape reinforcement layer on the rubber bladder, after vulcanization and forming of the fabric tape wound ball core.Type: GrantFiled: June 15, 2011Date of Patent: August 12, 2014Assignee: Mikasa CorporationInventors: Takashi Fujikura, Osamu Kobayashi, Shuzo Matsuno
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Patent number: 8672783Abstract: Surface panels of a sports ball are arranged to facilitate bending of their outer peripheral edge portions into an arc, without reducing strength of an elastic member, to define a groove at a seam between adjacent panels. Panels are adhered through the elastic members to a body defining a ball core with high adhesion strength. The panels have sheet material backed by an elastic member, each panel having an arched portion formed by bending inwardly an outer peripheral edge portion of each panel with a radius of curvature more than the thickness of the panel, after formation of many apertures in an inner peripheral edge portion of the elastic member. Lower edges of the arched portions of adjacent panels abut each other. A groove is defined at seams between adjacent panels, and the panels are adhered to a ball core body by adhering the elastic members to the body.Type: GrantFiled: February 29, 2012Date of Patent: March 18, 2014Assignee: Mikasa CorporationInventors: Takashi Fujikura, Masanobu Morishige, Shuzo Matsuno
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Publication number: 20120231908Abstract: Surface panels of a sports ball are arranged to facilitate bending of their outer peripheral edge portions into an arc, without reducing strength of an elastic member, to define a groove at a seam between adjacent panels. Panels are adhered through the elastic members to a body defining a ball core with high adhesion strength. The panels have sheet material backed by an elastic member, each panel having an arched portion formed by bending inwardly an outer peripheral edge portion of each panel with a radius of curvature more than the thickness of the panel, after formation of many apertures in an inner peripheral edge portion of the elastic member. Lower edges of the arched portions of adjacent panels abut each other. A groove is defined at seams between adjacent panels, and the panels are adhered to a ball core body by adhering the elastic members to the body.Type: ApplicationFiled: February 29, 2012Publication date: September 13, 2012Applicant: MIKASA CORPORATIONInventors: TAKASHI FUJIKURA, MASANOBU MORISHIGE, SHUZO MATSUNO
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Patent number: 8092324Abstract: Provided are: a sheet-like ball material including a fibrous base material, and an elastic polymer cover layer that is laminated on a surface of the fibrous base material, in which continuous pebbles and discontinuous valleys are formed on a surface of the cover layer, the valleys discontinuously formed are formed at average intervals of 0.5 to 3 mm, the valley has a depth of 50 to 500 ?m, a vertical projected area of each valley is 1 to 5 mm2, and a total area of the vertical projected area of each valley accounts for 3 to 30% relative to a surface area of the elastic polymer cover layer; a ball used for volleyball or beach volleyball including the sheet-like ball material, which is excellent in the controllability for all types of ball plays such as tossing and serving in the smoothness of the attenuation degree in the ball speed of the ball during flight of the ball, and in the design, e.g.Type: GrantFiled: July 24, 2007Date of Patent: January 10, 2012Assignees: Kuraray Co., Ltd., Mikasa CorporationInventors: Tetsuya Ashida, Koki Ogata, Yoshiaki Yasuda, Taketoshi Saeki
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Publication number: 20120004058Abstract: There is provided a sports ball capable of relieving the pain of the hands suffered from impact on the ball and having a soft feel and high flexibility. The sports ball comprises a spherical hollow rubber bladder (2) inflated with air injected into it, a fabric tape reinforcement layer (3) formed by winding a narrow adhesive-impregnated fabric tape (7) around a central spherical portion (6) of the rubber bladder about each of three axes of the rubber bladder with the exception of opposite spherical end portions (5) of the rubber bladder, whereby the fabric tape reinforcement layer is formed as orthogonal lap windings of the fabric tape over substantially all of the spherical surface of the rubber bladder, to provide a fabric tape wound ball core, and surface panels (4) adhered with adhesive to the fabric tape reinforcement layer on the rubber bladder, after vulcanization and forming of the fabric tape wound ball core.Type: ApplicationFiled: June 15, 2011Publication date: January 5, 2012Applicant: Mikasa CorporationInventors: Takashi Fujikura, Osamu Kobayashi, Shuzo Matsuno
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Patent number: 7758458Abstract: The present invention provides a gas filling-type ball for sports which has excellent non-slip property and sufficient mechanical strength such as surface abrasion resistance, and which can be particularly suitably used in a field of a material for a ball such as a basketball, American football, or rugby ball. The present invention relates to a ball used for any one of basketball, handball, rugby ball, and American football, comprising a sheet having formed thereon a cover layer including substantially continuous pebbles and hemispherical valleys adjoining the pebbles formed on a surface of a base fabric, in which: a height difference between the pebbles and the valleys is 50 to 1,000 ?m, a vertical projected area of each of the adjoining valleys is 3 to 30 mm2, and an average distance between the valleys is 0.5 to 3 mm.Type: GrantFiled: April 1, 2005Date of Patent: July 20, 2010Assignees: Kuraray Co., Ltd., Mikasa CorporationInventors: Michinori Fujisawa, Sadahiro Ishii, Taketoshi Saeki
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Publication number: 20100009792Abstract: Provided are: a sheet-like ball material including a fibrous base material, and an elastic polymer cover layer that is laminated on a surface of the fibrous base material, in which continuous pebbles and discontinuous valleys are formed on a surface of the cover layer, the valleys discontinuously formed are formed at average intervals of 0.5 to 3 mm, the valley has a depth of 50 to 500 ?m, a vertical projected area of each valley is 1 to 5 mm2, and a total area of the vertical projected area of each valley accounts for 3 to 30% relative to a surface area of the elastic polymer cover layer; a ball used for volleyball or beach volleyball including the sheet-like ball material, which is excellent in the controllability for all types of ball plays such as tossing and serving in the smoothness of the attenuation degree in the ball speed of the ball during flight of the ball, and in the design, e.g.Type: ApplicationFiled: July 24, 2007Publication date: January 14, 2010Applicants: Kuraray Co., Ltd., Mikasa CorporationInventors: Tetsuya Ashida, Koki Ogata, Yoshiaki Yasuda, Taketoshi Saeki
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Publication number: 20070219028Abstract: The present invention provides a gas filling-type ball for sports which has excellent non-slip property and sufficient mechanical strength such as surface abrasion resistance, and which can be particularly suitably used in a field of a material for a ball such as a basketball, American football, or rugby ball. The present invention relates to a ball used for any one of basketball, handball, rugby ball, and American football, comprising a sheet having formed thereon a cover layer including substantially continuous pebbles and hemispherical valleys adjoining the pebbles formed on a surface of a base fabric, in which: a height difference between the pebbles and the valleys is 50 to 1,000 ?m, a vertical projected area of each of the adjoining valleys is 3 to 30 mm2, and an average distance between the valleys is 0.5 to 3 mm.Type: ApplicationFiled: April 1, 2005Publication date: September 20, 2007Applicant: MIKASA CORPORATIONInventors: Michinori Fujisawa, Sadahiro Ishii, Taketoshi Saeki
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Patent number: 6962120Abstract: A method of forming a strong seam by using a sewing machine, without backstitching. In the sewing machine, a first shuttle hook which rotates in the counterclockwise direction, a first needle, a second needle, and a second shuttle hook which rotates in the counterclockwise direction are arranged in turn in the feed direction. A material to be sewn is fed every time when the needles simultaneously and independently form stitches, so as to form two independent seams which overlap each other in a manner such that the knots of the seams overlap each other on each knotted point, where one of the seams consists of perfect stitches, and the other seam consists of hitch stitches.Type: GrantFiled: September 13, 2004Date of Patent: November 8, 2005Assignee: Mikasa CorporationInventors: Takashi Fujikura, Hiroshi Muratani, Takahito Yanamoto
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Patent number: D520580Type: GrantFiled: August 26, 2005Date of Patent: May 9, 2006Assignee: Mikasa CorporationInventor: Atsushi Takata
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Patent number: D568425Type: GrantFiled: August 17, 2007Date of Patent: May 6, 2008Assignee: Mikasa CorporationInventor: Tomoo Oono
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Patent number: D568426Type: GrantFiled: August 17, 2007Date of Patent: May 6, 2008Assignee: Mikasa CorporationInventor: Hiroo Takubo
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Patent number: D811500Type: GrantFiled: February 1, 2017Date of Patent: February 27, 2018Assignee: MIKASA CORPORATIONInventors: Shuzo Matsuno, Ryutaro Ogawa
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Patent number: D961704Type: GrantFiled: September 9, 2020Date of Patent: August 23, 2022Assignee: MIKASA CORPORATIONInventor: Kazunari Tashiro
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Patent number: D983913Type: GrantFiled: June 11, 2022Date of Patent: April 18, 2023Assignee: MIKASA CORPORATIONInventor: Laszlo Ordog