Patents Assigned to Mitsuko Uchiyama
  • Patent number: 5954594
    Abstract: A golf wood club having a loft angle of 16 degrees or less, a face height of 40 mm or more, a head volume V of 270 to 450 ml, a head weight G of 160 to 190 g, and a shaft length S of 120 cm or more, the shaft length S being in the range expressed by the following inequality:298-1.023G.ltoreq.S<315.8-1.023GA driver club for golfers having small power of swing as an embodiment of the above golf wood club is prepared in accordance with a specific philosophy of design and does not show decrease in the reproducibility of good shot, such as a decrease caused by push out, although the driver club has a length of 120 cm (about 47 inches) or more, preferably 125 cm (49 inches) or more, more preferably 129 cm (51 inches) or more. A fairway wood club as another embodiment of the above golf wood club is prepared in accordance with the same specific philosophy of design and has a length of 120 cm (about 47 inches) or more, preferably 125 cm or more.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: September 21, 1999
    Assignee: Mitsuko Uchiyama
    Inventors: Mitsuru Uchiyama, Mitsuo Ohtani, Mica Nukina, Atsushi Uchiyama
  • Patent number: 5916038
    Abstract: (1) A golf wood club having a loft angle of 16 degrees or less, a head volume V of 270 to 450 ml, a head weight G of 160 to 195 g, and a shaft length S of 120 cm or more, the shaft length S being in the range expressed by the following inequality:315.8-1.023G.ltoreq.S.ltoreq.327.8-1.023G;and (2) a golf wood club having a loft angle in the range of 15 to 20 degrees, a face height of 30 to 40 mm, a head volume V of 180 to 300 ml, a head weight G of 170 to 200 g, and a shaft length S of 120 cm or more, the shaft length S being in the range expressed by the following inequality:315.8-1.023G.ltoreq.S.ltoreq.327.8-1.023G.The golf wood clubs do not show decrease in the reproducibility of good shot although the club has a length of 120 cm or more, preferably 125 cm or more.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: June 29, 1999
    Assignee: Mitsuko Uchiyama
    Inventors: Mitsuru Uchiyama, Mitsuo Ohtani, Mica Nukina, Atsushi Uchiyama