Abstract: Methods of forming dual core golf ball constructions achieving consistent and repeatable concentricity by incorporating a pair of novel partially cured hemispherical shells produced using an inventive center plate button. The pair of resulting novel hemispherical shells may be collectively compression molded about and reliably center a spherical inner core there within due to the novel resulting centering features/structure provided on the inner surface of each partially cured hemispherical shell by the novel center plate button used to form same. Securing features/structure are thereby provided within/on inner surfaces of resulting partially cured hemispherical shells in order to prevent undesirable movement of the spherical inner core there within until the final compression molding step occurs.

Abstract: Methods of forming dual core golf ball constructions achieving consistent and repeatable concentricity by incorporating a pair of novel hemispherical shells produced using an inventive center plate button. The pair of resulting novel hemispherical shells may be collectively compression molded about and reliably center a spherical inner core there within due to the novel resulting centering features and structure provided on the inner surface of each hemispherical shell by the novel center plate button used to form same. Securing features and structure are thereby provided within/on inner surfaces of resulting hemispherical shells in order to prevent undesirable movement of the spherical inner core there within until the final compression molding step occurs.

Abstract: Methods of forming dual core golf ball constructions achieving consistent and repeatable concentricity by incorporating a pair of novel partially cured hemispherical shells produced using an inventive center plate button. The pair of resulting novel hemispherical shells may be collectively compression molded about and reliably center a spherical inner core there within due to the novel resulting centering features/structure provided on the inner surface of each partially cured hemispherical shell by the novel center plate button used to form same. Securing features/structure are thereby provided within/on inner surfaces of resulting partially cured hemispherical shells in order to prevent undesirable movement of the spherical inner core there within until the final compression molding step occurs.

Abstract: Methods of forming dual core golf ball constructions achieving consistent and repeatable concentricity by incorporating a pair of novel hemispherical shells produced using an inventive center plate button. The pair of resulting novel hemispherical shells may be collectively compression molded about and reliably center a spherical inner core there within due to the novel resulting centering features and structure provided on the inner surface of each hemispherical shell by the novel center plate button used to form same. Securing features and structure are thereby provided within/on inner surfaces of resulting hemispherical shells in order to prevent undesirable movement of the spherical inner core there within until the final compression molding step occurs.

Abstract: Method of making an inventive golf ball incorporating a novel compression molded outer layer comprised of inventive first and second half-shells that are molded from preforms of extrudate, each preform created using a novel flying knife such that a cross-sectioned face of the preform has a curved depth which may be up to 20% greater than the depth of a preform created using a conventional straight edge and/or straight-faced flying knife. In one embodiment, the subassembly of the golf ball is a rubber spherical inner core, and the inventive compression molded outer layer is a rubber outer core layer. In a specific such embodiment, the rubber of the inner core and the rubber of the outer core layer differ.

Abstract: Method of making an inventive golf ball incorporating a novel compression molded outer layer comprised of inventive first and second half-shells that are molded from preforms of extrudate, each preform created using a novel flying knife such that a cross-sectioned face of the preform has a curved depth which may be up to 20% greater than the depth of a preform created using a conventional straight edge and/or straight-faced flying knife. In one embodiment, the subassembly of the golf ball is a rubber spherical inner core, and the inventive compression molded outer layer is a rubber outer core layer. In a specific such embodiment, the rubber of the inner core and the rubber of the outer core layer differ.