Patents Assigned to Kamatari Co., Ltd.
  • Golf ball
    Patent number: 5050886
    Abstract: A golf ball is disclosed, which comprises a core and a shell surrounding said core, said core composed of (a) a matrix formed of a first, relatively hard rubber and (b) a multiplicity of particles dispersed in said matrix and accounting for 10-65% of the volume of said core, said particles being formed of a second, relatively soft rubber and having a particle size of greater than 0.8 mm but not greater than 7.0 mm. This golf ball provides long carry and distance and gives hands a soft strike shock.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: September 24, 1991
    Assignee: Kamatari Co., Ltd.
    Inventors: Katsunobu Yamagishi, Yasuhiro Fukui
  • Solid three-piece golf ball
    Patent number: 4781383
    Abstract: A solid three piece golf ball made by covering a core, which consists of inner and outer layers, with a shell, the inner layer having a diameter of 24-29 mm and a hardness (Shore hardness D) of 15-30, the outer layer having a diameter of 36-41 mm and a hardness (Shore hardness D) of 55-65, the golf ball having a percentage of the area of the portion of the surface thereof which contacts a club face when the ball is struck by the club within a range of 27-35%.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: November 1, 1988
    Assignee: Kamatari Co., Ltd.
    Inventors: Toshihiko Kamada, Shunji Izumi, Shinichi Watanabe
  • Golf ball
    Patent number: 4611810
    Abstract: A golf ball having compression strength greater than 7000 kg-f and rebound height greater than 90/120, said golf ball comprising a rubber composition filled with 10 to 40 parts by weight of calcium carbonate based on 100 parts by weight of the rubber, the calcium carbonate having a BET specific surface area of 60 to 300 m.sup.2 /g and a particle diameter of 0.035 to 0.010 micrometers.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: September 16, 1986
    Assignees: Toyo Denka Kogyo Co., Ltd., Kamatari Co., Ltd.
    Inventors: Toshihiko Kamata, Shunji Izumi, Kazuo Irimajiri, Setsuji Edagawa
  • Golf gloves
    Patent number: 4514861
    Abstract: A golf glove is provided wherein the lateral sides of outer and inner wall members of finger compartments thereof are respectively sewn together as twisted in a direction opposite to the direction of and in an amount substantially equal to the amount of twist of said finger compartments that occurs with respect to fingers when a golf club is gripped with the glove.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: May 7, 1985
    Assignee: Kamatari Co., Ltd.
    Inventor: Toshihiko Kamada