Air flow guiding slot structure of wooden golf club head

Details Air flow guiding slot structure of wooden golf club head Air flow guiding slot structure of wooden golf club head

2001-07-02

2002-10-01

Passaniti, Sebastiano (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S328000

Reexamination Certificate

active

06458042

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to a wooden golf club head, and more particularly to a slot structure which is designed for a smooth flow of air on the wooden golf club head to balance the air pressures exerting respectively on the crown and the sole of the wooden golf club hand, thereby enabling a golfer to hit the ball with precision.
BACKGROUND OF THE INVENTION
Referring to in
FIG. 1
, the conventional golf club
10
comprises a shaft
11
and a head
20
which is fastened with one end of the shaft
11
. The head
20
is provided in the top with a curved surface
21
, and in the bottom with an inclined surface
22
which is different in curvature length from the curved surface
21
. According to the Bernoulli's theorem, when the golf club
10
is swung. The air flow path on the curved surface
21
is relatively longer. In the meantime, the air flow velocity of the air flow path is greater. However, the curved surface
21
is exerted on by a pressure P
1
which is smaller than a pressure P
2
exerting on the inclined surface
22
, as illustrated in FIG.
2
. As the head
20
travels along a parabolic path, both the curved surface
21
and the inclined surface
22
bring about air flow pressures of different magnitudes. In other words, the air flows move along the parabolic path without stability. In light of the difference in the air flow pressure of the curved surface
21
and the inclined surface
22
of the head
20
, the head
20
is apt to float in the air, so as to deviate from the intended path. As a result, the head
20
fails to hit the ball with precision.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a wooden golf club head which is free of the deficiency of the conventional wooden golf club head described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by the wooden golf club head which is provided with an air flow guiding slot in communication with a curved surface of the top and an inclined surface of the bottom of the head. The air flow guiding slot structure comprises an upper guiding port and a lower guiding port. The upper guiding port is located in a curved surface of the arcuate side of the head and is provided with a notch. The lower guiding port is located in an inclined surface of the arcuate side of the head and is provided with a notch. The upper guiding port and the lower guiding port are connected by a continuous wall which is provided with an opening. The opening, the continuous wall, the upper guiding port, and the lower guiding port form together an air flow channel of the wooden golf club head of the present invention.


REFERENCES:
patent: 3997170 (1976-12-01), Goldberg
patent: 4065133 (1977-12-01), Gordos
patent: 4930783 (1990-06-01), Antonious
patent: 5092599 (1992-03-01), Okumoto
patent: 5203565 (1993-04-01), Murray
patent: 5221086 (1993-06-01), Antonious
patent: 5435558 (1995-07-01), Iriarte
patent: 5467989 (1995-11-01), Good

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