Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2011-01-04
2011-01-04
Passaniti, Sebastiano (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S331000
Reexamination Certificate
active
07862450
ABSTRACT:
The present invention is directed to a golf club head with an improved striking surface. The grooves are machined into the strike surface with tight tolerances. The grooves have sharp edges, radiused ends, and a draft angle between about 2° and 12°. The striking face is machined such that it has a uniform texture with a roughness of more than 40 Ra. The grooves may contain a plurality of portions, including a radiused or angled portion, a portion having substantially parallel walls, a portion having a v-shape, and a curved portion. The grooves may also be characterized by various dimensions, including draft angle, inclusive side wall angle, width, depth, cross-sectional area, spacing, and pitch ratio. Preferred values for these dimension are provided.
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Clausen Karl A.
Gilbert Peter J.
Acushnet Company
Hanify & King P.C.
Passaniti Sebastiano
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