Appeal No. 2005-0806 Page 6
Application No. 10/179,812
an outer cover layer molded over said spherical intermediate ball to form a
multi-layer golf ball, the outer layer comprising an ionomeric material, said outer
cover layer having a modulus in a range of about 1,000 to about 30,000 psi.
Nesbitt's invention relates to a golf ball having a multilayer or two-ply cover
construction for a solid resilient center or core wherein the multilayer cover construction
involves two stage molded cover compositions over a solid center or core of resilient
polymeric material wherein an increased coefficient of restitution is attained and wherein
the "feel" or playing characteristics are attained similar to those derived from a balata
covered golf ball. The golf ball has a solid center or core 12 of resilient polymeric or
similar material covered by a first layer or ply 14 of molded hard, highly flexural modulus
resinous material or of cellular or foam composition which has a high coefficient of
restitution. The first layer or ply is provided with a second or cover layer 16 of a
comparatively soft, low flexural modulus resinous material or of cellular or foam
composition molded over the first layer and core or center assembly. Nesbitt teaches
(column 1, lines 57-60) that "[t]hrough the use of the first ply or layer of hard, high
flexural modulus resinous material on the core or center, a maximum coefficient of
restitution may be attained." The resinous material for the first ply or layer 14 is a
resinous material such as type 1605 Surlyn® which is a hard, high flexural modulus resin
which produces a substantial gain of coefficient of restitution over the coefficient of
restitution of the core or center. The outer layer, ply, lamination or cover 16 is a
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