Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2001-01-04
2003-05-27
Sewell, Paul T. (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S473000, C473S338000, C473S349000, C473S291000, C473S309000
Reexamination Certificate
active
06569031
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an iron club head which makes it possible to improve the performance to control the ball hit by a player.
2. Description of the Related Art
In general, the iron club is classified into long irons, middle irons, and short irons which are designed such that the flying distance of the hit ball is shortened as the number is increased from those of the long iron to those of the middle iron and the short iron. That is, those having large numbers are designed such that the length of the shaft is short, and the loft angle and the lie angle of the head are large.
Of course, it is required for the golf club that the ball is allowed to successfully fly to a target point as closely as possible, and this feature is easily realized. In such a case, if the ball can be hit within a sweet area of the head, the performance to control the hit ball is improved.
However, it is difficult for many amateur players to hit the ball without fail within the sweet area of the head. Especially, the following adopted design makes hitting the ball more difficult. That is, the smaller the number of the iron club is, the longer the length of the shaft is, and the smaller the loft angle of the head is.
Accordingly, it has been tried to widen the sweet area so that the ball hit point is not deviated from the sweet area even when the ball hit point is dispersed to some extent with the iron club head. For example, when the iron club head is designed so that the moment of inertia of the head is increased, the head tends not to be rotated when the ball is hit. As a result, it is possible to widen the sweet area. In view of the fact as described above, an iron club head has been developed, in which the weight is dominantly distributed to circumferential portions of the head to increase the moment of inertia. Specifically, those called “cavity back” and those having hollow structures are known.
However, the enlargement of the sweet area is not necessarily realized sufficiently in the case of the iron club head as described above. It is demanded to develop an iron club head which makes it possible to further enlarge the sweet area.
SUMMARY OF THE INVENTION
A general object of the present invention is to provide an iron club head which makes it possible to widen the sweet area and improve the performance to control the hit ball.
A principal object of the present invention is to provide an iron club head which makes it possible to easily allow the ball to fly to a position near to a target point.
The above and other objects, features, and advantages of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawings in which a preferred embodiment of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 3655188 (1972-04-01), Solheim
patent: 4632400 (1986-12-01), Boone
patent: 4854581 (1989-08-01), Long
patent: 5044637 (1991-09-01), Wilson
patent: 5312105 (1994-05-01), Cleveland
patent: 5320347 (1994-06-01), Parente et al.
patent: D350800 (1994-09-01), Ota
patent: 5401021 (1995-03-01), Allen
patent: 5429355 (1995-07-01), Schmidt et al.
patent: D419628 (2000-01-01), Williams, Jr.
Duong Thanh
Frishauf Holtz Goodman & Chick P.C.
Kasco Corporation
Sewell Paul T.
LandOfFree
Iron club head does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Iron club head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Iron club head will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3012441