US2016361607A1PendingUtilityA1
Striking plate for a golf club head
Assignee: ADVANCED INT MULTITECH CO LTDPriority: Jun 12, 2015Filed: Dec 17, 2015Published: Dec 15, 2016
Est. expiryJun 12, 2035(~8.9 yrs left)· nominal 20-yr term from priority
A63B 2053/0445A63B 53/04A63B 2053/0408A63B 2053/0416A63B 53/0416A63B 53/0408A63B 53/0445
39
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Claims
Abstract
A striking plate for a golf club head includes a striking surface, a plurality of parallel linear grooves, and a plurality of protrusions. The parallel linear grooves are formed in the striking surface and are spaced apart from one another by a predetermined distance. The protrusions are formed on the striking surface, extend between two adjacent ones of the linear grooves, and are spaced apart from each other.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A striking plate for a golf club head having a toe-to-heel direction, comprising:
a striking surface, a plurality of parallel linear grooves formed in said striking surface in a first direction extending in the toe-to-heel direction and spaced apart from one another by a predetermined distance in a second direction perpendicular to the first direction, each of said linear grooves including two rounded edges spaced apart from each other in the second direction, each of said rounded edges adjoining a corresponding portion of said striking surface and having a tangent point for a tangent line passing therethrough to cooperate with said corresponding portion of said striking surface to define an angle of 30°, and a plurality of protrusions formed on said striking surface, extending in the first direction between two adjacent ones of said linear grooves, and spaced apart from each other in the second direction, wherein letting N be a number of said protrusions between said two adjacent ones of said linear grooves, S be a minimum distance between said tangent point of one of said rounded edges of one of said two adjacent ones of said linear grooves and said tangent point of one of said rounded edges of the other of said two adjacent ones of said linear grooves, H be a height of each of said protrusions relative to said striking surface, D 1 , D 2 . . . D N be respective widths of said protrusions between said two adjacent ones of said linear grooves, D max be a maximum of D 1 , D 2 . . . D N , each of V 1 , V 2 . . . V N-1 be a gap between two adjacent ones of said protrusions between said two adjacent ones of said linear grooves, V min be a minimum of V 1 , V 2 . . . V N-1 , Ra be a centerline average roughness of a portion of said striking surface between said two adjacent ones of said linear grooves, T1 be a minimum distance between said tangent point of one of said rounded edges of one of said two adjacent ones of said linear grooves and one of said protrusions which is proximate to said tangent point of said one of said rounded edges of said one of said two adjacent ones of said linear grooves, and T2 be a minimum distance between said tangent point of one of said rounded edges of the other of said two adjacent ones of said linear grooves and one of said protrusions which is proximate to said tangent point of said one of said rounded edges of the other of said two adjacent ones of said linear grooves,
1.905 mm≦ S≦ 3 mm,
0.004 mm≦ H≦ 0.044 mm,
D max ≦V min ,
Ra
=
(
D
1
+
D
2
+
D
3
+
…
+
D
N
)
×
(
H
-
h
)
+
(
V
1
+
V
2
+
V
3
+
…
+
V
N
-
1
+
T
1
+
T
2
)
×
h
S
=
A
S
,
wherein
h
=
(
D
1
+
D
2
+
D
3
+
…
+
D
N
)
×
H
S
,
and
A≦ 0.004572 mm× S.
2 . The striking plate according to claim 1 , wherein N is at least 3.
3 . The striking plate according to claim 1 , wherein T1 is equal to T2.
4 . The striking plate according to claim 1 , wherein T1 is not equal to T2.
5 . The striking plate according to claim 1 , wherein letting a be an average cross-sectional area of said protrusions along the second direction between said two adjacent ones of said linear grooves,
a
=
(
D
1
+
D
2
+
D
3
+
…
+
D
N
)
×
H
N
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