Games using tangible projectile – Golf – Club or club support
Patent
1998-03-05
2000-01-11
Passaniti, Sebastiano
Games using tangible projectile
Golf
Club or club support
473349, A63B 5304
Patent
active
060129905
ABSTRACT:
Disclosed is a golf club head comprising a hollow head main body comprising a metallic sole portion and a metallic outer mold which have been molded solidly together, wherein at least one part of the sole portion is formed of a heavy metal having a specific gravity which is 3.5 to 11 times the specific gravity of the metal constituting the outer mold. Also disclosed is a golf club head comprising a hollow head main body wherein a metallic sole portion and a metallic outer mold which have been molded solidly together; and wherein assuming a coordinate system wherein when the head main body is placed in a stationary position on a horizontal plane surface, a position of the center of gravity of the head main body is deemed as an origin O, a line perpendicular to the plane surface, which passes through the origin O is deemed as a Y axis, and a line parallel to the plane surface and perpendicular to a leading edge of the head main body, which passes through the origin O is deemed as an X axis, a weight is positioned in a lower left quadrant partitioned below the X axis and to the back of the Y axis, the foregoing weight being formed of a heavy metal having a specific gravity which is 3.5 to 11 times the specific gravity of the metal constituting the head main body.
REFERENCES:
patent: 4432549 (1984-02-01), Zebelean
patent: 4803023 (1989-02-01), Enomoto
patent: 5193811 (1993-03-01), Okumoto
patent: 5207428 (1993-05-01), Aizawa
patent: 5421577 (1995-06-01), Kobayashi
patent: 5501459 (1996-03-01), Endo
patent: 5658207 (1997-08-01), Aizawa
patent: 5755624 (1998-05-01), Helmstetter
Passaniti Sebastiano
The Yokohama Rubber Co. Ltd.
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