Four piece solid golf ball

Details Four piece solid golf ball Four piece solid golf ball

1999-04-01

2001-03-27

Chapman, Jeanette (Department: 3711)

Games using tangible projectile

Golf

Ball

C473S374000

Reexamination Certificate

active

06206791

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a four piece solid golf ball having good flight performance and good shot feel at the time of hitting. More particularly, it relates to a four piece solid golf ball having high launch angle when hitting.
BACKGROUND OF THE INVENTION
Golf balls are generally classified into two, one of which is a thread wound golf ball and the other is a solid golf ball. A representative example of the solid golf balls is a two piece solid golf ball which is composed of a solid center formed from vulcanized rubber and a cover formed on the center and made from thermoplastic resin.
Although the two piece solid golf ball has such a simple structure as mentioned above, it has very good performance in flight distance and durability and therefore has been approved by lots of amateur golfers. However, the two piece solid golf ball has high hardness and exhibits poor shot feel at the time of hitting and poor controllability at approach shot.
For improving the defects of the two piece solid golf ball, much effort has been paid and it has been proposed as the result of the study either that the core is made two layers or that the cover is made two layers. These methods improve the shot feel to some degree, but do not improve the other defects and the shot feel is also desired to be improved more.
OBJECTS OF THE INVENTION
The present invention is to provide a solid golf ball which solves the above mentioned defects and shows good shot feel at the time of hitting and long flight distance.
This object as well as other objects and advantages of the present invention will become apparent to those skilled in the art from the following description with reference to the accompanying drawing.


REFERENCES:
patent: 5702311 (1997-12-01), Higuchi et al.
patent: 5733205 (1998-03-01), Higuchi et al.
patent: 5980396 (1999-11-01), Moriyama et al.
patent: 2300574 (1996-11-01), None
patent: 2302036 (1997-01-01), None
patent: 2311731 (1997-10-01), None

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