Patents by Inventor Tatsuya Yashiki

Tatsuya Yashiki 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).

  • Publication number: 20180339539
    Abstract: A method of creating a plot diagram having plotted thereon a plurality of points, the plurality of points respectively corresponding to a plurality of shafts for a golf club, includes defining a plot region having a first axis of a first index; deriving values of the first index for the shafts; and plotting points, in the plot region, corresponding to the shafts at positions corresponding to the values of the first index. The first index represents a characteristic value of a shaft and is a value that is derived using stiffness values in a plurality of positions of the shaft along a longitudinal direction of the shaft. The method further includes printing a plurality of sub-regions on the plot region in such a mode that the plurality of sub-regions are distinguishable from each other by a user, the plurality of sub-regions respectively corresponding to different types of golfer.
    Type: Application
    Filed: August 1, 2018
    Publication date: November 29, 2018
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Tatsuya YASHIKI
  • Patent number: 9993705
    Abstract: To provide a golf club shaft that can provide a moderate rigidity and enhance an impact strength. A shaft 6 includes full length layers s3, s4, s7, s8 and s9 provided wholly in a longitudinal direction of the shaft, and tip end partial layers s1, s2, s10, s11 and s12 provided on a tip end part of the shaft. The full length layers include bias layers s3 and s4 and straight layers s8 and s9. The tip end partial layer includes an inner glass fiber reinforced layer s1, and an outer low elastic carbon fiber reinforced layer s10 or an outer glass fiber reinforced layer s10 which is disposed outside the inner glass fiber reinforced layer s1. The low elastic carbon fiber has a tensile elastic modulus of 22 ton/mm2 or less. In the shaft 6, a shaft weight in terms of 46 inches is 55 g or less.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: June 12, 2018
    Assignee: DUNLOP SPORTS CO., LTD.
    Inventor: Tatsuya Yashiki
  • Patent number: 9795847
    Abstract: A golf club 2 includes a head 4, a shaft 6 and a grip 8. The shaft 6 includes a plurality of layers, a tip end Tp and a butt end Bt. If a distance between a center of gravity of the shaft and the butt end Bt is defined as Lg (mm), a shaft full length is defined as Ls (mm), and a ratio of the distance Lg to the shaft full length Ls is defined as a ratio of the center of gravity of the shaft, the ratio of the center of gravity of the shaft is 44.5% or less. If a torsional rigidity at a point of 90 mm distant from the tip end Tp is defined as GJt (kgf·m2), and a torsional rigidity at a point of 210 mm distant from the butt end Bt is defined as GJb (kgf·m2), GJb/GJt is 5.5 or less.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 24, 2017
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventors: Hirotaka Nakamura, Tatsuya Yashiki
  • Publication number: 20170080305
    Abstract: To provide a golf club shaft that can provide a moderate rigidity and enhance an impact strength. A shaft 6 includes full length layers s3, s4, s7, s8 and s9 provided wholly in a longitudinal direction of the shaft, and tip end partial layers s1, s2, s10, s11 and s12 provided on a tip end part of the shaft. The full length layers include bias layers s3 and s4 and straight layers s8 and s9. The tip end partial layer includes an inner glass fiber reinforced layer s1, and an outer low elastic carbon fiber reinforced layer s10 or an outer glass fiber reinforced layer s10 which is disposed outside the inner glass fiber reinforced layer s1. The low elastic carbon fiber has a tensile elastic modulus of 22 ton/mm2 or less. In the shaft 6, a shaft weight in terms of 46 inches is 55 g or less.
    Type: Application
    Filed: December 1, 2016
    Publication date: March 23, 2017
    Applicant: DUNLOP SPORTS CO. LTD.
    Inventor: Tatsuya YASHIKI
  • Patent number: 9586106
    Abstract: A shaft 6 includes a first butt partial sheet s4 and a second butt partial sheet s5. The first butt partial sheet s4 includes a first tapered part TP1. The second butt partial sheet includes a second tapered part TP2. The first butt partial sheet s4 and the second butt partial sheet s5 satisfy the following (1) to (4). L11, L12, L21, Lt1 and Lt2 are shown in FIG. 3.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: March 7, 2017
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventor: Tatsuya Yashiki
  • Patent number: 9539479
    Abstract: [Object] To provide a golf club shaft that can provide a moderate rigidity and enhance an impact strength. [Solution] A shaft 6 includes full length layers s3, s4, s7, s8 and s9 provided wholly in a longitudinal direction of the shaft, and tip end partial layers s1, s2, s10, s11 and s12 provided on a tip end part of the shaft. The full length layers include bias layers s3 and s4 and straight layers s8 and s9. The tip end partial layer includes an inner glass fiber reinforced layer s1, and an outer low elastic carbon fiber reinforced layer s10 or an outer glass fiber reinforced layer s10 which is disposed outside the inner glass fiber reinforced layer s1. The low elastic carbon fiber has a tensile elastic modulus of 22 ton/mm2 or less. In the shaft 6, a shaft weight in terms of 46 inches is 55 g or less.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: January 10, 2017
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventor: Tatsuya Yashiki
  • Publication number: 20160346651
    Abstract: A golf club 2 includes a head 4, a shaft 6 and a grip 8. The shaft 6 includes a plurality of layers, a tip end Tp and a butt end Bt. If a distance between a center of gravity of the shaft and the butt end Bt is defined as Lg (mm), a shaft full length is defined as Ls (mm), and a ratio of the distance Lg to the shaft full length Ls is defined as a ratio of the center of gravity of the shaft, the ratio of the center of gravity of the shaft is 44.5% or less. If a torsional rigidity at a point of 90 mm distant from the tip end Tp is defined as GJt (kgf·m2), and a torsional rigidity at a point of 210 mm distant from the butt end Bt is defined as GJb (kgf·m2), GJb/GJt is 5.5 or less.
    Type: Application
    Filed: April 1, 2016
    Publication date: December 1, 2016
    Applicant: DUNLOP SPORTS CO. LTD.
    Inventors: Hirotaka Nakamura, Tatsuya Yashiki
  • Publication number: 20160257158
    Abstract: A user is able to intuitively understand differences in shaft characteristics relating to the distribution of shaft stiffness values between a plurality of types of shafts. A printed material on which is printed a plot diagram is provided. This plot diagram has plotted thereon a plurality of points respectively representing characteristic values of a plurality of shafts for a golf club, and includes a plot region having an axis that represents a first index. The first index is determined based on the distribution of stiffness values of the shaft in a direction along the shaft.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 8, 2016
    Applicant: DUNLOP SPORTS CO. LTD.
    Inventor: Tatsuya YASHIKI
  • Publication number: 20160225920
    Abstract: A surface electrode (5) is installed on the light receiving surface of a solar cell element, the surface electrode (5) comprises three bus bar electrodes (5a) for extracting light-produced at the solar cell element to the outside and collecting finger electrodes (5b) connected to these bus bar electrodes (5a), and the bus bar electrodes (5a) are not less than 0.5 mm and not more than 2 mm in width and the finger electrodes (5b) are not less than 0.05 mm and not more than 0.1 mm in width. A high-efficient solar cell module can be obtained with substantially lowered resistance by increasing the number of bus bar electrode (5a) and thereby decreasing the lengths of the finger electrodes (5b).
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: Shuichi FUJII, Yosuke INOMATA, Tomonari SAKAMOTO, Koichiro NIIRA, Yuko FUKAWA, Hiroshi MORITA, Koji NISHI, Tatsuya YASHIKI, Mitsuo YAMASHITA, Kenji FUKUI
  • Publication number: 20160016056
    Abstract: A shaft 6 includes a first butt partial sheet s4 and a second butt partial sheet s5. The first butt partial sheet s4 includes a first tapered part TP1. The second butt partial sheet includes a second tapered part TP2. The first butt partial sheet s4 and the second butt partial sheet s5 satisfy the following (1) to (4). L11, L12, L21, Lt1 and Lt2 are shown in FIG. 3.
    Type: Application
    Filed: July 6, 2015
    Publication date: January 21, 2016
    Applicant: DUNLOP SPORTS CO. LTD.
    Inventor: Tatsuya YASHIKI
  • Publication number: 20150224375
    Abstract: [Object] To provide a golf club shaft that can provide a moderate rigidity and enhance an impact strength. [Solution] A shaft 6 includes full length layers s3, s4, s7, s8 and s9 provided wholly in a longitudinal direction of the shaft, and tip end partial layers s1, s2, s10, s11 and s12 provided on a tip end part of the shaft. The full length layers include bias layers s3 and s4 and straight layers s8 and s9. The tip end partial layer includes an inner glass fiber reinforced layer s1, and an outer low elastic carbon fiber reinforced layer s10 or an outer glass fiber reinforced layer s10 which is disposed outside the inner glass fiber reinforced layer s1. The low elastic carbon fiber has a tensile elastic modulus of 22 ton/mm2 or less. In the shaft 6, a shaft weight in terms of 46 inches is 55 g or less.
    Type: Application
    Filed: October 10, 2013
    Publication date: August 13, 2015
    Applicant: DUNLOP SPORTS CO. LTD.
    Inventor: Tatsuya Yashiki
  • Patent number: 8975506
    Abstract: A surface electrode (5) is installed on the light receiving surface of a solar cell element, the surface electrode (5) comprises three bus bar electrodes (5a) for extracting light-produced at the solar cell element to the outside and collecting finger electrodes (5b) connected to these bus bar electrodes (5a), and the bus bar electrodes (5a) are not less than 0.5 mm and not more than 2 mm in width and the finger electrodes (5b) are not less than 0.05 mm and not more than 0.1 mm in width. A high-efficient solar cell module can be obtained with substantially lowered resistance by increasing the number of bus bar electrode (5a) and thereby decreasing the lengths of the finger electrodes (5b).
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: March 10, 2015
    Assignee: KYOCERA Corporation
    Inventors: Shuichi Fujii, Yosuke Inomata, Tomonari Sakamoto, Koichiro Niira, Yuko Fukawa, Hiroshi Morita, Koji Nishi, Tatsuya Yashiki, Mitsuo Yamashita, Kenji Fukui
  • Patent number: 8936516
    Abstract: A section where the tip side partial bias layer exists in an axis direction of the shaft is defined as a section T; a section where the back end side partial bias layer exists in the axis direction of the shaft is defined as a section B; and a shaft section inserted into a hosel of a head in the axis direction of the shaft is defined as a section H. A part of the section T overlaps with the section H. An overlapping section TB in which the section T overlaps with the section B exists. The whole overlapping section TB is located on a back end Bt side of the shaft from the section H. A center position Px of the overlapping section TB is located on a tip side of the shaft from a center position Pc of the shaft.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: January 20, 2015
    Assignee: Dunlop Sports Co., Ltd.
    Inventor: Tatsuya Yashiki
  • Patent number: 8936515
    Abstract: A golf club shaft is manufactured using a plurality of prepreg sheets a1 to a8. The plurality of prepreg sheets a1 to a8 includes full length sheets a2 to a7 disposed all over in a shaft axis direction and partial sheets a1 and a8 partially disposed in the shaft axis direction. The number of plies is substantially an integer in all the full length sheets a2 to a7. The full length sheets a2 to a7 include four or more bias sheets a2 to a5. Circumferential winding start positions of the bias sheets a2 to a5 are dispersed in four or more positions. Preferably, the circumferential winding start positions of the full length sheets a2 to a7 are dispersed in five or more positions.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: January 20, 2015
    Assignee: SRI Sports Limited
    Inventor: Tatsuya Yashiki
  • Patent number: 8915796
    Abstract: A golf club shaft has a tip end to which a golf club head is attached and a butt end to which a grip is attached, wherein the shaft is composed of a fiber reinforced resin having a fiber layer, the fiber layer contains a bias layer having bias fibers oriented at an angle with respect to an axial direction of the shaft, the bias layer includes a tip-side bias layer extending from the tip end toward the butt end and having a butt-side end terminating without reaching the butt end and a butt-side bias layer extending from the butt end toward the tip end and having a tip-side end terminating without reaching the tip end, and bias fibers in the tip-side bias layer has a tensile elastic modulus smaller than that of bias fibers of the butt-side bias layer.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 23, 2014
    Assignee: Dunlop Sports Co. Ltd
    Inventor: Tatsuya Yashiki
  • Patent number: 8814717
    Abstract: A golf club 2 is provided with a head 4, a shaft 6, a grip 8, a head cavity body 10 mounted to the head, a grip cavity body 40 mounted to the grip 8, a head weight 12 attachable to/detachable from the head cavity body 10, and a grip weight 12 attachable to/detachable from the grip cavity body 40. A material of the grip cavity body is a polymer. A material of the head cavity body is a polymer. Preferably, the head weight 12 is attachable to/detachable from the grip cavity body 40. Preferably, the grip weight 12 is attachable to/detachable from the head cavity body 40. Preferably, in the golf club 2, a club mass can be adjusted without substantially changing a club balance.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: August 26, 2014
    Assignee: SRI Sports Limited
    Inventor: Tatsuya Yashiki
  • Publication number: 20140209152
    Abstract: A surface electrode (5) is installed on the light receiving surface of a solar cell element, the surface electrode (5) comprises three bus bar electrodes (5a) for extracting light-produced at the solar cell element to the outside and collecting finger electrodes (5b) connected to these bus bar electrodes (5a), and the bus bar electrodes (5a) are not less than 0.5 mm and not more than 2 mm in width and the finger electrodes (5b) are not less than 0.05 mm and not more than 0.1 mm in width. A high-efficient solar cell module can be obtained with substantially lowered resistance by increasing the number of bus bar electrode (5a) and thereby decreasing the lengths of the finger electrodes (5b).
    Type: Application
    Filed: March 28, 2014
    Publication date: July 31, 2014
    Applicant: KYOCERA CORPORATION
    Inventors: Shuichi FUJII, Yosuke INOMATA, Tomonari SAKAMOTO, Koichiro NIIRA, Yuko FUKAWA, Hiroshi MORITA, Koji NISHI, Tatsuya YASHIKI, Mitsuo YAMASHITA, Kenji FUKUI
  • Patent number: 8777770
    Abstract: A golf club 2 is provided with a head 4, a shaft 6, a grip 8, a head cavity body 10 mounted to the head, a grip cavity body 40 mounted to the grip 8, a head weight 12 attachable to/detachable from the head cavity body 10, and a grip weight 12 attachable to/detachable from the grip cavity body 40. A material of the grip cavity body is a polymer. A material of the head cavity body is a polymer. Preferably, the head weight 12 is attachable to/detachable from the grip cavity body 40. Preferably, the grip weight 12 is attachable to/detachable from the head cavity body 40. Preferably, in the golf club 2, a club mass can be adjusted without substantially changing a club balance.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: July 15, 2014
    Assignee: SRI Sports Limited
    Inventor: Tatsuya Yashiki
  • Patent number: 8389850
    Abstract: A solar cell module includes a base body, a plurality of solar cell elements arranged at intervals over the base body, a resin layer disposed on the solar cell elements and comprising a plurality of recesses on its surface facing opposite to the solar cell elements, and a protective sheet disposed on the resin layer. The protective sheet comprises a plurality of protrusions which correspond to the recesses of the resin layer and which are in contact with the recesses. The height of first protrusion at a location corresponding to the interval between the solar cell elements among the plurality of protrusions is higher than the height of second protrusion at a location corresponding to the solar cell element among the plurality of protrusions. The interval between adjacent ones of the second protrusions in a portion corresponding to an end portion of the base body in longer than the interval between adjacent ones of the second protrusions in a portion corresponding to a central portion of the base body.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: March 5, 2013
    Assignee: Kyocera Corporation
    Inventors: Kouji Nishi, Hiroshi Morita, Tatsuya Yashiki, Motofumi Mihara, Toshikazu Kajiwara, Michikazu Matsushima, Toshiyuki Yuasa
  • Publication number: 20120260964
    Abstract: A surface electrode (5) is installed on the light receiving surface of a solar cell element, the surface electrode (5) comprises three bus bar electrodes (5a) for extracting light-produced at the solar cell element to the outside and collecting finger electrodes (5b) connected to these bus bar electrodes (5a), and the bus bar electrodes (5a) are not less than 0.5 mm and not more than 2 mm in width and the finger electrodes (5b) are not less than 0.05 mm and not more than 0.1 mm in width. A high-efficient solar cell module can be obtained with substantially lowered resistance by increasing the number of bus bar electrode (5a) and thereby decreasing the lengths of the finger electrodes (5b).
    Type: Application
    Filed: October 13, 2011
    Publication date: October 18, 2012
    Applicant: KYOCERA CORPORATION
    Inventors: Shuichi FUJII, Yosuke INOMATA, Tomonari SAKAMOTO, Koichiro NIIRA, Yuko FUKAWA, Hiroshi MORITA, Koji NISHI, Tatsuya YASHIKI, Mitsuo YAMASHITA, Kenji FUKUI