Golf club head

Games using tangible projectile – Golf – Club or club support

Reexamination Certificate

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Details

C473S349000

Reexamination Certificate

active

06299548

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention relates to an improved strike face of a golf club head, wherein an arched back of the strike face may be used for adjusting the center of gravity of the club head according to weight decrement of the arched grooves.
As a plurality of scoring lines formed in the strike face of the club head is fluctuated, each flute bottom is the thinnest portion liable to be ruptured when striking (as shown in FIGS.
1
and
2
).
For enhancing strength of the weakness, a reinforcement piece is usually provided with its protruded portions corresponding to the flute bottoms in a prior skill (
FIG. 3
) that moves substantially the center of gravity of the club head approaching the strike face, which requires to make other portions of the club, such as the strike face, the head, or the shaft coupling, thinner to keep the total weight of the club conforming to golfing regulations that will weaken its strength meanwhile.
In view of the above-described imperfection, the inventor has consequently developed and proposed this improved structure pertaining to the subject matter.
SUMMARY OF THE INVENTION
The right-angle grooves of the reinforcement piece on the back of the strike face in the prior art are substituted with arched grooves with better elasticity and strength, and moreover, the weight decrement of the arched grooves may be taken as a measure for changing the center of gravity of the club head for diversified designs.
Further scope of the applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.


REFERENCES:
patent: 5090702 (1992-02-01), Viste
patent: 5437088 (1995-08-01), Igarashi
patent: 5601501 (1997-02-01), Kobayashi
patent: 5611742 (1997-03-01), Kobayashi
patent: 5665013 (1997-09-01), Kobayashi
patent: 5676605 (1997-10-01), Kobayashi
patent: 5735755 (1998-04-01), Kobayashi

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