Structure of golf club head

Details Structure of golf club head Structure of golf club head

1999-12-07

2001-10-09

Passaniti, Sebastiano (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S345000

Reexamination Certificate

active

06299549

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a golf club head, and more particularly to such a golf club head, which is inexpensive to manufacture and, which has a high-performance face panel.
The game of golf has become more and more popular. The design of the club head determines the performance of the golf club. Various structures of golf club head have been disclosed.
FIGS. 1 and 2
show a golf club head according to the prior art. This structure of golf club head is comprised of a hollow club head body
100
, a face panel
200
, and a top cover
300
. The club head body
100
comprises a front opening
101
, a top opening
103
, and an inside flange
102
raised from the inside wall thereof within the front opening
101
. The top cover
300
is closed on the top opening
103
and welded to the club head body
100
. The face panel
200
is supported on the inside flange
102
and peripherally welded to the club head body
100
by hard soldering. The height A of the club head body
100
is about 50 mm. The wall thickness B of the club head body
100
is about 2.5 mm. The width C of the inside flange
102
is about 1.5 mm. After installation of the face panel
200
in the club head body
100
, the ineffective hitting distance at the top side as well as the bottom side is B+C is about 4 mm (2.5 mm+1.5 mm=4 mm) respectively, and the effective hitting height D of the face panel
200
is A−2(B+C), i.e., about 42 mm [50−(4×2)=42]. The hitting height is greatly reduced by 16% (8÷50=0.16). Because the hitting area is greatly reduced, the player may miss the ball when hitting. Further, the welding area between the face panel
200
and the club head body
100
wear quickly with use.
FIGS. 3 and 4
show another structure of golf club head. This structure of golf club head is comprised of a hollow club head body
100
, a face panel
200
, and a top cover
300
. The club head body
100
comprises a front opening
101
, a top opening
103
, and an inside flange
102
raised from the inside wall thereof within the front opening
101
. The top cover
300
is closed on the top opening
103
and welded to the club head body
100
. The face panel
200
has a beveled peripheral edge. During the assembly process, the face panel
200
is supported on the inside flange
102
, and a solder P is filled in the gap between the peripheral wall of the front opening
101
of the club head body
100
and the beveled peripheral edge of the face panel
200
, enabling the face panel
200
to be welded to the club head body
100
. The height A of the club head body
100
is about 50 mm. The wall thickness B of the club head body
100
is about 2.5 mm. The width C of the inside flange
102
is about 3 mm. After installation of the face panel
200
in the club head body
100
, the ineffective hitting distance at the top side as well as the bottom side is B+C is about 4 mm (2.5 mm+5 mm=5.5 mm) respectively, and the effective hitting height D of the face panel
200
is A−2(B+C), i.e., about 39 mm (50−(5.5×2)=39). The hitting height is greatly reduced by 22% [(5.5×2)÷50=0.22]. Because of reduced hitting area, the player may miss the ball when hitting. Further, because the solder P is directly welded to the club head body
100
and the face panel
200
from the front side, the welding area wears quickly with the use of the golf club.
SUMMARY OF THE INVENTION
The present invention has been accomplished to provide a golf club head, which eliminates the aforesaid drawbacks. According to one aspect of the present invention, the club head body has a rim smoothly curved inwards toward the center of the front opening thereof, defining with the face panel, which is covered on the rim, a filler groove around the periphery of the club head body, and a solder is welded to the club head body and the face panel to fill up the filler groove. According to another aspect of the present invention, the club head body comprises two projecting locating rods respectively inwardly raised from the rim at two opposite sides; and the face panel comprises two positioning side notches respectively engaged with the projecting locating rods. The invention eliminates the arrangement of a top cover, and hence the manufacturing cost is greatly reduced. When welded to the club head body, the face panel has only about 4%~6% of its total area ineffective for hitting the ball. Furthermore, because the solder does not directly bear the impact when the face panel hitting the ball, the welding area does not wear quickly with the use of the golf club.


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patent: 5294037 (1994-03-01), Schmidt
patent: 5303922 (1994-04-01), Lo
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patent: 5704850 (1998-01-01), Shieh
patent: 5713800 (1998-02-01), Su
patent: 5816936 (1998-10-01), Aizawa
patent: 5871408 (1999-02-01), Chen
patent: 5993329 (1999-11-01), Shieh
patent: 6001032 (1999-12-01), Onuki

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