Patents Assigned to Kasco Corporation
  • Iron club head
    Patent number: 6569031
    Abstract: A sole of a head is inclined upwardly toward a side of a hosel section. A proximal section of the hosel section, which is continuous to a top, is set to be low. Accordingly, the weight of the head on the side of the hosel section is reduced, while the weight is distributed to circumferential portions of the head. Thus, the moment of inertia is set to be increased, and the sweet area is substantially enlarged.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: May 27, 2003
    Assignee: Kasco Corporation
    Inventor: Masayuki Toyota
  • Golf club head
    Patent number: 6494790
    Abstract: A golf club head includes a face having a height ranging from 24 to 32 mm. The ratio W/H of the width W of a sole to the height H of the face is in the range from 1.5 to 2.2. The distance Y from a straight line along the central axis of a hosel to the end of a heel is in the range from 11 to 15 mm. The golf club head thus constructed is capable of hitting the ball over a sufficient distance in a good direction.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: December 17, 2002
    Assignee: Kasco Corporation
    Inventors: Masayuki Toyota, Kenichi Sato
  • Iron club head
    Publication number: 20020006834
    Abstract: A sole of a head is inclined upwardly toward a side of a hosel section. A proximal section of the hosel section, which is continuous to a top, is set to be low. Accordingly, the weight of the head on the side of the hosel section is reduced, while the weight is distributed to circumferential portions of the head. Thus, the moment of inertia is set to be increased, and the sweet area is substantially enlarged.
    Type: Application
    Filed: January 4, 2001
    Publication date: January 17, 2002
    Applicant: KASCO CORPORATION
    Inventor: Masayuki Toyota
  • Golf ball
    Patent number: 5929170
    Abstract: Disclosed is a golf ball comprising a core covered with a cover, wherein the cover is formed of a resin composition containing, as a major component, a mixture composed of (A) an ionomer resin of lithium salt of ethylene-(meta)acrylic acid copolymer, (B) an ionomer resin of bivalent metal salt of ethylene-(meta)acrylic acid ester-(meta)acrylic acid terpolymer, and (C) a partially saponified resin of ethylene-(meta)acrylic acid ester copolymer.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: July 27, 1999
    Assignee: Kasco Corporation
    Inventors: Hiroshi Kawabata, Yasuhiro Fukui, Taro Izawa
  • Golf club shaft
    Patent number: 5904627
    Abstract: A golf club shaft comprises three interconnected tubular members whose diameters, flexional rigidities, lengths, materials, etc. are selected to make the golf club shaft more flexible near a club head or a club grip or at a middle portion.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: May 18, 1999
    Assignee: Kasco Corporation
    Inventors: Toshihiro Miyaji, Atsushi Takeda, Masahiko Fujiwara
  • Solid golf ball
    Patent number: 5772531
    Abstract: Disclosed is a solid golf ball comprising a solid core having a three-layered structure composed of an inner layer, an intermediate layer, and an outer layer, and a cover for coating the solid core. The intermediate layer is designed to have a JIS-C hardness of 50 to 80, and the outer layer is designed to have a hardness which is higher than the hardness of the intermediate layer.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: June 30, 1998
    Assignee: Kasco Corporation
    Inventors: Shunji Ohsumi, Hiroshi Kawabata, Kenji Baba, Yasuhiro Fukui, Hiroyuki Naito, Taro Izawa
  • Solid golf ball
    Patent number: 5743816
    Abstract: A solid golf ball basically comprises a solid core composed of a three-layered structure, and a cover for coating the solid core therewith. The solid core comprises an inner layer, an intermediate layer having a Shore D hardness of 45 to 65, and an outer layer having a hardness lower than that of the intermediate layer. The inner layer has a hardness which is set to be lower than the hardness of the intermediate layer.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: April 28, 1998
    Assignee: Kasco Corporation
    Inventors: Shunji Ohsumi, Yasuhiro Fukui, Kenji Baba, Hiroyuki Naito
  • Golf-club head
    Patent number: 5630888
    Abstract: A golf club head is formed of an alloy steel which comprises at most 0.2 wt. % of C, 0.05-1.0 wt. % of Si, at most 0.5 wt. % of Mn, 3.0-8.0 wt. % of Ni, 10.0-20.0 wt. % of Cr, 3.0-8.0 wt. % of Mo and 10.0-20.0 wt. % of Co, the remainder being substantially Fe, and has a metallic texture composed principally of martensite.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: May 20, 1997
    Assignees: Shintomi Golf Co., Ltd., Kasco Corporation
    Inventors: Daisaku Yoshida, Katsumi Yamano
  • Golf-club head
    Patent number: 5569337
    Abstract: A golf club head is formed of an alloy steel which comprises at most 0.2 wt. % of C, 0.05-1.0 wt. % of Si, at most 0.5 wt. % of Mn, 3.0-8.0 wt. % of Ni, 10.0-20.0 wt. % of Cr, 3.0-8.0 wt. % of Mo and 10.0-20.0 wt. % of Co, the remainder being substantially Fe, and has a metallic texture composed principally of martensite.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: October 29, 1996
    Assignees: Shintomi Golf Co., Ltd., Kasco Corporation
    Inventors: Daisaku Yoshida, Katsumi Yamano
  • Golf club head
    Patent number: D437016
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: January 30, 2001
    Assignee: Kasco Corporation
    Inventors: Masayuki Toyota, Kenichi Sato
  • Golf club
    Patent number: D448438
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: September 25, 2001
    Assignee: Kasco Corporation
    Inventor: Masayuki Toyota