Multi-piece solid golf ball

Details Multi-piece solid golf ball Multi-piece solid golf ball

2005-07-05

2005-07-05

Gorden, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

06913548

ABSTRACT:
The present invention provides a multi-piece solid golf ball having excellent flight performance and good shot feel. The present invention relates to a multi-piece solid golf ball comprising a core consisting of an inner core, an intermediate layer and an outer layer, and a cover, wherein the inner core has a flexural rigidity (RI) of 20 to 80 MPa, a ratio (RM/RI) of a flexural rigidity of the intermediate layer (RM) to the (RI) is from 0.6 to 1.4, a flexural rigidity of the outer layer is higher than the (RI) by 70 to 500 MPa, and the intermediate layer is placed such that the a radius of the golf ball (rG), a radius of the inner core (rI) and a radius of a two-layer structured core obtained by forming the intermediate layer on the inner core (rT) satisfy the following two formulae:in-line-formulae description="In-line Formulae" end="lead"?rI/rG≧0.70in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?rT/rG≦0.83.in-line-formulae description="In-line Formulae" end="tail"?

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