Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
1999-01-29
2001-05-01
Chapman, Jeanette (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S290000
Reexamination Certificate
active
06224495
ABSTRACT:
TECHNICAL FIELD
The present invention relates to golf clubs and golf club sets, and more particularly to golf club sets in which the weight balance of shafts is optimized for each individual club.
BACKGROUND ART
In recent years, golf clubs have been improved remarkably. In many cases, club heads have been designed in order to broaden their sweet spots or to lower their centers of gravity. For the shafts of golf clubs, new materials are being used to control flexibility or strength against twist.
DISCLOSURE OF THE INVENTION
According to other features, characteristics, embodiments and alternatives of the present invention which will become apparent as the description thereof proceeds below, the present invention provides golf club sets in which weight balance of the club shafts is optimized for each individual club.
According to another embodiment of the present invention, golf clubs are designed so as to produce optimized or improved perform characteristics for each individual club for golfers of all levels of experience, from beginners or novice to professional golfers.
The present invention is applicable to both woods and irons.
According to a first aspect of the invention, in golf club sets, the weight balance at the grip-end of the shaft of each of the individual golf clubs increases as the corresponding loft angle of each of the individual golf clubs increases.
According to a second aspect of the invention, golf clubs are characterized by controlling the weight balance of the shafts so that the weight at the grip-end increases as the loft angles increase.
Additional objects, advantages and novel features of the invention will be set forth in the description that follows, and will otherwise become apparent to those skilled in the art upon examination of the following or may be learned by practice of the invention. The objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.
REFERENCES:
patent: 5192073 (1993-03-01), Iwanaga et al.
patent: 5228688 (1993-07-01), Davis
patent: 5924936 (1999-07-01), Penley
patent: 2227418 (1990-01-01), None
Aneeging Sports Co., Ltd.
Baker & Daniels
Blau Stephen L.
Chapman Jeanette
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