Patents by Inventor Atsuki Kasashima

Atsuki Kasashima 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).

  • Golf ball
    Publication number: 20060068940
    Abstract: Disclosed herein is a golf ball having on its surface a number of dimples and a number of edges separating dimples from each other, wherein the edges are formed from a plurality of edge elements joined together such that some of the joining parts of the edge elements assume a smoothly curved shape as viewed from above. The golf ball has improved aerodynamic performance due to dimples and achieves a long flying distance.
    Type: Application
    Filed: July 15, 2005
    Publication date: March 30, 2006
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball
    Publication number: 20060068939
    Abstract: Disclosed herein is a golf ball having on its surface a number of dimples and a number of edges separating dimples from each other, wherein the edges are formed from a plurality of edge elements joined together such that some of the joining parts of the edge elements assume a smoothly curved shape as viewed from above. The golf ball has improved aerodynamic performance due to dimples and achieves a long flying distance.
    Type: Application
    Filed: September 28, 2004
    Publication date: March 30, 2006
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball
    Patent number: 7018308
    Abstract: A golf ball includes a multiplicity of dimples on its outer surface. At least one or more of the multiplicity of dimples are each configured to have a convex bottom portion formed by a circular-arc defined by a center positioned inside the ball and a curvature radius “r” mm smaller than a radius “R” mm of the ball but larger than a value (R?0.5) mm. The golf ball specified such that the shapes of the dimples are optimized as described above exhibits high flight characteristics.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: March 28, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Atsuki Kasashima
  • Golf ball
    Patent number: 7018309
    Abstract: A golf ball has a surface on which numerous dimples are arranged with any dimple being surrounded by a plurality of adjoining dimples. Mutually adjoining dimples, each defined by a peripheral edge, have disposed therebetween an edge element which forms part of the peripheral edge. When the golf ball is manufactured with a two-part mold having two halves, the edge elements on or near a ball equator coincident with a parting line between the mold halves are continuously interconnected along the equator and some of the edge elements intersect the equator. The golf ball has dimple effects which enhance its aerodynamic performance and thus increase its carry.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: March 28, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Atsuki Kasashima, Katsunori Sato
  • Golf ball
    Patent number: 7018310
    Abstract: In a golf ball possessing a spherical surface having a first radius from a ball center, the spherical surface includes a plurality of small spherical regions having a second radius from the center which is smaller than the first radius. The golf ball is improved in flight performance owing to the reduced air resistance.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: March 28, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball
    Publication number: 20060035726
    Abstract: A golf ball composed of an elastic solid core and a resin cover enclosing said core and having a number of dimples in the surface thereof, which is characterized in that said elastic solid core has resilience such that the deformation is 3.0 to 5.0 mm when the load is increased from 98 N (10 kgf) to 1275 N (130 kgf), said cover has a gage of 1.2 to 2.1 mm and a Shore D hardness of 60 to 75, and said dimples are formed in two or more different patterns, with their number amounting to 250 to 370. This golf ball is superior in flight performance.
    Type: Application
    Filed: August 11, 2004
    Publication date: February 16, 2006
    Inventors: Atsuki Kasashima, Katsunori Sato, Hideo Watanabe
  • Golf ball
    Patent number: 6991565
    Abstract: Disclosed herein is a golf ball having a plurality of round dimples on the surface thereof, which is characterized in that said dimples include those of two kinds or more differing in diameter such that the ratio of the maximum diameter to the minimum diameter is at least 1.5, said dimples add up to 240 to 290, with large dimples 4.7 mm or above in diameter accounting for more than 50%, and said dimples are formed such that the volume under a flat surface surrounded by the edge of each dimple divided by the volume of a hypothetical cylinder having said flat surface as the bottom and the maximum depth from the bottom as the height is 0.49 to 0.85 on average for all the dimples. The golf ball having adequately formed and arranged dimples achieves a long flying distance.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: January 31, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Atsuki Kasashima
  • Golf ball
    Patent number: 6971962
    Abstract: The present invention is a golf ball which has a spherical surface which is integrally provided with a plurality of annular ridges. The annular ridges are effective for reducing the air resistance of the ball in flight and thus drastically improving the flight performance. Further, at least some of the annular ridges may intersect with each other, including those which have an equal size.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: December 6, 2005
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Atsuki Kasashima, Katsunori Sato
  • Golf ball
    Publication number: 20050250604
    Abstract: A golf ball has a surface on which numerous dimples are arranged with any dimple being surrounded by a plurality of adjoining dimples. Mutually adjoining dimples, each defined by a peripheral edge, have disposed therebetween an edge element which forms part of the peripheral edge. When the golf ball is manufactured with a two-part mold having two halves, the edge elements on or near a ball equator coincident with a parting line between the mold halves are continuously interconnected along the equator and some of the edge elements intersect the equator. The golf ball has dimple effects which enhance its aerodynamic performance and thus increase its carry.
    Type: Application
    Filed: May 4, 2004
    Publication date: November 10, 2005
    Inventors: Atsuki Kasashima, Katsunori Sato
  • Golf ball and dimple formation
    Patent number: 6962540
    Abstract: In a golf ball having a multiplicity of generally circular dimples on its outer surface, the number of those dimples having a neighbor relationship that satisfies |???|?15° wherein ? is an angle included between two line segments extending from the center of a reference dimple tangent to the rim of an adjacent dimple and ? is an angle included between two line segments extending from the center of the adjacent dimple tangent to the rim of the reference dimple is at least 60% of the total number of dimples. This enhances the dimple effects, so the ball exhibits improved aerodynamic performance and offers a consistent carry and direction independent of the point of impact.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: November 8, 2005
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball
    Publication number: 20050239579
    Abstract: A golf ball having a surface on which are formed numerous dimples and numerous edges which define the dimples is characterized in that the edges are composed of a plurality of edge elements, and the dimples include dimples which are defined by a plurality of edge elements and are non-circular as viewed from above. Dimple effects on the golf ball enhance the aerodynamic performance, enabling the ball to achieve an increased carry.
    Type: Application
    Filed: April 22, 2004
    Publication date: October 27, 2005
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball
    Publication number: 20050143194
    Abstract: A golf ball of the type having a large number of convex parts projecting from the spherical surface, the convex parts assuming a round or non-round shape as viewed from above, wherein the improvement includes a large number of convex parts which are arranged such that the upper surface of the convex part has a certain radius of curvature and coincides with a hypothetical spherical surface covering the spherical surface, at least part of a large number of convex parts form a string of convex parts connected to each other through a part thereof, and the strings of convex parts form at least one great circle which is substantially F continuous on the spherical surface. This golf ball is novel in appearance and excellent in flight performance.
    Type: Application
    Filed: December 22, 2004
    Publication date: June 30, 2005
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball dimple arrangement method
    Publication number: 20050032590
    Abstract: A method for arranging dimples on a golf ball involves the steps of previously drawing a plurality of imaginary lines connecting one pole and the equator on one hemisphere to equally divide the hemispherical surface into a plurality of spherical isosceles triangle regions; arranging a number of dimples within a pair of spherical isosceles triangle regions such that the dimples in the triangle regions are in axial symmetry with respect to the imaginary line; rotationally moving the arranged dimples about the ball axis; and arranging dimples on the other hemisphere such that they are in point symmetry with the dimples as moved on the one hemisphere with respect to the ball center.
    Type: Application
    Filed: August 9, 2004
    Publication date: February 10, 2005
    Inventors: Atsuki Kasashima, Katsunori Sato
  • Golf ball
    Patent number: 6843736
    Abstract: In a golf ball, triangular dimples each defined by combining three ridge-like lands having a side length of 2-9 mm are arranged on the spherical surface. The percent occupation of the total dimple area over the entire spherical surface area is significantly increased, even to substantially 100%, and the ball is drastically improved in flight performance.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: January 18, 2005
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Atsuki Kasashima
  • Golf ball
    Publication number: 20050009643
    Abstract: In a golf ball possessing a spherical surface having a first radius from a ball center, the spherical surface includes a plurality of small spherical regions having a second radius from the center which is smaller than the first radius. The golf ball is improved in flight performance owing to the reduced air resistance.
    Type: Application
    Filed: July 7, 2004
    Publication date: January 13, 2005
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball and dimple formation
    Publication number: 20040209709
    Abstract: In a golf ball having a multiplicity of generally circular dimples on its outer surface, the number of those dimples having a neighbor relationship that satisfies |&agr;−&bgr;|≧15° wherein &bgr; is an angle included between two line segments extending from the center of a reference dimple tangent to the rim of an adjacent dimple and &agr; is an angle included between two line segments extending from the center of the adjacent dimple tangent to the rim of the reference dimple is at least 60% of the total number of dimples. This enhances the dimple effects, so the ball exhibits improved aerodynamic performance and offers a consistent carry and direction independent of the point of impact.
    Type: Application
    Filed: April 8, 2004
    Publication date: October 21, 2004
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball
    Publication number: 20040192473
    Abstract: In a golf ball comprising an elastic core, an intermediate layer of at least one layer, and a cover which is provided on its surface with a plurality of dimples, wherein the cover has a gage of 1.0-1.5 mm, the intermediate layer has a gage of 1.0-2.0 mm per layer, the golf ball in its entirety has a specific gravity of 1.128-1.145 g/cm3. On account of an optimum specific gravity in a relatively high range, the ball is improved in flight performance.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 30, 2004
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Atsuki Kasashima, Yasushi Ichikawa
  • Golf ball
    Patent number: 6761647
    Abstract: In a golf ball having a plurality of dimples on its surface, twelve pentagonal groups each consisting of five dimples arranged about one central dimple are dispersively distributed over the ball surface excluding the polar areas, and hexagonal groups each consisting of six dimples arranged about one central dimple are distributed over the remaining area of the ball surface. The dimples are arranged uniformly and densely so as to reduce the air resistance in flight of the ball, resulting in increased flight distance.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: July 13, 2004
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Atsuki Kasashima
  • Golf ball
    Publication number: 20040127306
    Abstract: In a golf ball, ridges each extending to define a non-circular shape, typically a polygonal or star shape, delimiting a predetermined area are arranged on its spherical surface in good balance for reducing the air resistance of the ball in flight and thus drastically improving the flight performance.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 1, 2004
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Katsunori Sato, Atsuki Kasashima
  • Golf ball
    Publication number: 20040121858
    Abstract: A golf ball has a plurality of linearly or curvilinearly extending ridge-like lands on its spherical surface. The percent occupation of the total of land areas relative to the overall area of a phantom spherical surface assumed at the level of the top of lands can be reduced to substantially zero.
    Type: Application
    Filed: July 22, 2003
    Publication date: June 24, 2004
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventor: Atsuki Kasashima