Appeal No. 2003-1610 Page 4
Application No. 09/715,128
arrive at the claimed invention. See In re Fine, 837 F.2d 1071, 1074, 5 USPQ2d 1596,
1598 (Fed. Cir. 1988) and In re Lintner, 458 F.2d 1013, 1016, 173 USPQ 560, 562
(CCPA 1972).
Claims 3 and 5, the only independent claims on appeal, read as follows:
3. A wood club head comprising:
a head main body defining a hollow portion, the head main body including
a front face forming a hitting face and a rear face disposed behind the front face
so as to form a gap of a predetermined width between the front face and the rear
face, the rear face having a thickness in a range of 1.5 mm to 2.3 mm,
wherein, when a golf ball is made to collide on the front face at an
entrance speed V (m/s), a restitution coefficient of the front face is in a range of
from 0.84 to 0.88 in a case where the entrance speed V is in a range of from
35 to 40 (m/s).
5. A wood club head comprising:
a head main body defining a hollow portion, the head main body including
a front face forming a hitting face and a rear face disposed behind the front face
so as to form a gap of a predetermined width, the rear face having a thickness in
a range of 1.5 mm to 2.3 mm,
wherein, when a golf ball is made to collide on the front face at an
entrance speed V (m/s), a restitution coefficient of the front face is not lower than
0.80 but lower than 0.83 in a case where the entrance speed V is in a range of
from 48 to 53 (m/s).
Chou's invention relates, in general, to a golf club and, more specifically, to a golf
club head for controlling launch velocity of a golf ball. Chou's invention provides a golf
club head having a stopper plate disposed at a front end. A trampoline plate is
disposed a predetermined distance forwardly of the stopper plate for forming a gap in
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