Two-piece solid golf ball

Details Two-piece solid golf ball Two-piece solid golf ball

1997-02-10

1998-05-19

Marlo, George J.

Games using tangible projectile

Golf

Ball

473383, 473378, 473372, 273DIG22, 273DIG20, A63B 3706, A63B 3712

Patent

active

057528896

ABSTRACT:
A two-piece solid golf ball comprises a solid core and a cover enclosing the core and having a number of dimples in its surface. The solid core is formed of a rubber base and has a specific gravity of at least 1.00. The cover has a greater specific gravity than the core. 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. V.sub.0 is the ratio of the volume of the dimple space below a plane circumscribed by the dimple edge to the volume of a cylinder whose bottom is the plane and whose height is the maximum depth of the dimple measured from the bottom. The ball is improved in flight distance, controllability, roll and straight travel upon putting.

REFERENCES:
patent: 4863167 (1989-09-01), Matsuki et al.
patent: 5497996 (1996-03-01), Cadorniga

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