Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2001-01-25
2003-09-09
Passaniti, Sebastiano (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S332000, C473S342000, C473S350000
Reexamination Certificate
active
06616546
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a golf club generally consisting of a grip, shaft, and head, and more particularly to a golf club head having an improved ball striking plate and a weight to stabilize its swing.
2. Description of the Related Art
There are used various kinds of golf clubs such as a wood, iron, putter, etc. according to the targeted distance to send the ball. When playing a golf game, one of the most important things critically serving to win the game is to make a first shot to send the ball as near to the intended target as possible. Accordingly, there have been many attempts to achieve a golf club head to improve both shot and ball-flight distance by proposing various materials and structures for the head. For example, a metal is used for the wood club, or the rear surface of the head is depressed.
However, such conventional attempts are mostly devoted to simply improve the ball-flight distance or increase the ball striking face of the head, but can hardly contribute to the training of an inexpert golfer. Namely, the conventional golf clubs depend only on the golfer's feel to control the slice or hook, so that it is very difficult for the inexpert golfer to control the ball or striking feel.
Korean Patent No. 99-0215992 granted to the present applicant discloses a golf club head consisting of a front ball striking surface and rear surface integrally formed with the club head body in order to improve the ball-flight distance and striking feel. This head is characterized in that the rear surface is undercut forming a plurality of concentric circular steps, which absorb the impact of the ball-striking surface struck by the ball so that their resilient force may increase the ball-flight distance. Namely, when striking the ball, the club head is resiliently bent rearwards with the help of the concentric circular steps cut in the rear surface, so that the vibrations and impact imparted to the head are absorbed, and then its resilient force may improve the ball-flight distance. Accordingly, this also enhances the striking feel of the golfer.
However, this structure also has the weight center towards the heel, causing the inexpert golfer to make the open swing, as in the conventional golf club, so that it is hardly possible to make a correct shot, and an unexpected slice may occur. Additionally, it is not easy to correctly undercut the rear surface of the club head to form the concentric circular steps. Moreover, the weight center located backward of the head makes the inexpert golfer hardly control his position especially when making a long-distance shot. This requires him to be hard trained to control the golf club.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved golf club head with means for improving both ball-flight distance and striking feel.
It is another object of the present invention to provide an improved golf club head with means for enabling the inexpert to easily obtain the striking feel.
It is still another object of the present invention to provide an improved golf club with means for shifting the weight center of the club head body from the heel to toe to increase the moment of inertia of the head, so that the ball-flight distance may be considerably increased, and the inexpert may make a correct shot without falling into the open swing.
According to an aspect of the present invention, a golf club head comprises a hosel for receiving a golf club shaft, a club head body having a heel and toe, the club head body being hollowed rearwards to form an attachment opening, a weight protuberance jutting out from the part of the attachment opening near the toe to optimize the weight center of the club head body, a separate ball striking plate tightly fitted into the attachment opening, a shock absorption part consisting of a plurality of concentric circular steps cut in the rear surface of the ball striking plate, and a connection opening formed in the ball striking plate so as to grasp the weight protuberance when fitting the ball striking plate into the attachment opening, whereby the ball striking plate resiliently absorbs the impact of striking a golf ball, and the weight protuberance shifts the weight center from the heel to the toe.
According to another aspect of the present invention, the shock absorption part consists of a plurality of concentric elliptical grooves formed in the rear surface of said ball striking plate. Or otherwise, the shape of the steps or grooves constituting the shock absorption part may be rectangular or square.
The present invention will now be described more specifically with reference to the drawings attached only by way of example.
REFERENCES:
patent: 4398965 (1983-08-01), Campau
patent: 5509660 (1996-04-01), Elmer
patent: 5649872 (1997-07-01), Antonious
patent: 5697855 (1997-12-01), Aizawa
patent: 5993331 (1999-11-01), Shieh
patent: 6045456 (2000-04-01), Best
Myron Amer P.C.
Passaniti Sebastiano
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