Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2007-02-20
2007-02-20
Kim, Eugene (Department: 3711)
Games using tangible projectile
Golf
Club or club support
Reexamination Certificate
active
11446667
ABSTRACT:
A golf club head is characterized by stepped grooves in the striking face thereof. The grooves may have a V-shape or a U-shape. The V-shaped grooves have side walls that intersect at the bottom of the grooves, while the U-shaped grooves have side walls that terminate at opposite ends of a bottom wall, which preferably is parallel to the striking face. At least one side wall of the grooves contains at least one step portion, so that the grooves have a stepped configuration. The stepped grooves impart more consistent spin to a golf ball when struck by the club head.
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Callaway Golf Company
Catania Michael A.
Hunter, Jr. Alvin A.
Kim Eugene
Lo Elaine H.
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