Multi-piece solid golf ball

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

1997-02-10

1998-07-14

Marlo, George J.

Games using tangible projectile

Golf

Ball

473373, 473384, A63B 3706, A63B 3712

Patent

active

057795630

ABSTRACT:
A multi-piece solid golf ball comprises a solid core and a cover of at least two layers enclosing the core and having a number of dimples in cover outer layer surface. The solid core is formed of a rubber base and has a specific gravity of at least 1.00. The cover is formed of a thermoplastic resin and the cover outer layer has a greater specific gravity than the core or a cover inner layer. The golf ball has an inertia moment (M) within the range given by the following expression: M.sub.DL .ltoreq.M.ltoreq.M.sub.UL wherein M.sub.UL =0.08D+84.8 and M.sub.DL =0.08D+77.8 wherein D is a Shore D hardness of the cover, the dimples occupy at least 60% of the ball surface, and V.sub.0 is in the range of 0.4 to 0.65. The ball is improved in flight distance, controllability, roll and straight travel upon putting.

REFERENCES:
patent: 4714253 (1987-12-01), Nakahara et al.
patent: 5002281 (1991-03-01), Nakahara et al.
patent: 5497996 (1996-03-01), Cadorniga
patent: 5553852 (1996-09-01), Higuchi et al.
patent: 5601503 (1997-02-01), Yamagishi et al.

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