Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
1999-09-01
2001-02-06
Passaniti, Sebastiano (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S331000, C473S330000
Reexamination Certificate
active
06183379
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a golf putter, and more particularly to a golf putter with which a golfer can putt a golf ball effectively to a desired direction under any topographical condition, such as in a relatively flat green, in a state of lawn inclined to one direction and in a inclined green.
DESCRIPTION OF THE RELATED ART
Golf clubs are generally divided into wood clubs, iron clubs and putters, each have various types according to the flying distance and hitting angle.
Among these golf clubs, the putter is mainly used on a green for rolling a golf ball rather than hitting the ball strongly, and is generally classified into a T-type, an L-type, a Pin-type and an egg-type.
FIG. 1
is a front view showing the L-type putter, including a head
1
, a shaft
2
and a grip
3
. Since such a golf putter is one of the golf clubs used in the last step for inserting the ball into a hole, it is required to be delicate in a putting step, different from that of the iron club or the wood club.
Therefore, if the flowing angle of the ball is shifted a little due to various factor, such as the contact angle and friction the force between the ball and the face (a hit surface) of head
1
, the final position of ball deviates far away from the hole.
FIGS. 2 and 3
are partial perspective views showing the problem that occurs when putting with the conventional golf putter.
FIG. 2
shows the putting state in a lawn lain down to one side and
FIG. 3
shows the putting state in a ground inclined to one side at a particular angle.
In
FIG. 2
, even though the golfer hits the ball
4
in a straight line, it curves toward the inclined direction of the lawn as the velocity of the ball
4
decreases. Therefore, the ball
4
deviates far away from the desired final position.
In
FIG. 3
, even though the golfer hits the ball
4
in a straight line the inclined direction of the green according to the decrease of velocity of the ball
4
decreases. Therefore, the ball
4
deviates far away from the desired final position.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a golf putter with which a golfer can hit a golf ball effectively to a desired direction under any topographical condition, such as in a relatively flat green, in a state of lawn lain down to one direction and in a inclined green.
To achieve these and other advantages and in accordance with the purpose of the present invention as embodied and broadly described, a golf putter comprises a head having a face, a shaft and a grip. The face comprises a first face formed on the center thereof, a second face formed on one side of the first face and inclined inwardly, and a third face formed on the other side of the first face and inclined inwardly.
According to one aspect of the present invention, a plurality of friction protrusions are further formed on the surface of the first face for improving contact resistance between the first face and a golf ball to be collided with.
According to another aspect of the present invention, a plurality of spin protrusions are formed on the surface of the second and the third face respectively in the shape of steps, so that a golf ball when collided with might be rotates inwardly.
Preferably, the second and the third face is inclined inwardly at an approximately 10° angle and a plurality of spin protrusions formed on the second and the third face in the shape of steps are preferably formed symmetrically centered about said first face, and most preferably may be circular arc centering around the first face so that the golf ball being collided with might be rotated inwardly.
Therefore, on a relatively flat green of the in which the flow of golf ball is almost not affected by the inclination of the lawn or the ground, the golf ball travels straight an the desired hitting direction without shaken or being pushed by means of the friction protrusions formed on the first face of the head, to thereby improve the accuracy of the putting operation. In addition, on a inclined green of the lain down lawn in which the flow of golf ball is affected by the inclination of the lawn or the green, the spin protrusions formed on the surface of the second or the third faces compensate in the above condition, so that the golfer can hit the ball directly for the hole without having to take into consideration the curvature of the golf ball to right or left side, to thereby further improve the accuracy of the putting operation.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
REFERENCES:
patent: 1094599 (1914-04-01), Samson
patent: 3392977 (1968-07-01), Delacey
patent: 3632112 (1972-01-01), Jacobs
patent: 3819180 (1974-06-01), Murphy
patent: 3881733 (1975-05-01), Csernits
patent: 4290606 (1981-09-01), Maxwell
patent: 4529203 (1985-07-01), Ribaudo
patent: 4846477 (1989-07-01), Phelan
patent: 5505450 (1996-04-01), Stuff
patent: 5961392 (1999-10-01), Hillock
patent: 6045452 (2000-04-01), Ahn
Kim Jong-Sung
Kim Sung-Chul
Darby & Darby
Passaniti Sebastiano
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