Loading patent…
AssigneePrinceton Chemical Research, Inc.
InventorsRichard Miller, Murray H. Reich, Emma Kuntz
Estimating the term…
A golf ball comprising a substantially spherical homogeneous molded mass of elastomer highly cross-linked into a three dimensional network with long, flexible cross-links formed from a metal-containing cross-linkable monomer, said comonomer simultaneously functioning at least in part as a filler, said mass exhibiting substantially isometric compression across any diameter. Advantageously the elastomer comprises polybutadiene and said metal-containing cross-linkable monomer comprises zinc dimethacrylate present in about 15 to 60 parts per 100 parts by weight of the polybutadiene. The composition may additionally contain a small amount of zinc oxide. By proper selection of the shape and make up of the slugs from which the balls are molded or by particular techniques, e.g. laboratory sheeting mills, balls can be produced which have a maximum difference in compression across different diameters of about 5 units.
In the production of a molded golf ball wherein a cross-linkable elastomer is continuously extruded through a die to form an extrudate, said extrudate is cut into slugs of the appropriate predetermined mass, and said slugs are molded in golf ball molds to form golf balls, the improvement which comprises forming said extrudate and cutting it so as to produce approximately cylindrical slugs about 2.5 to 3.3 inches long and having substantially flat or convex top and bottom surfaces, whereby the resulting golf balls are isometric.
In the production of a molded golf ball wherein a cross-linkable elastomer is continuously extruded through a die to form an extrudate, said extrudate is cut into slugs of the appropriate predetermined mass, and said slugs are molded in golf ball molds to form golf balls or golf ball centers, the improvement which comprises subdividing each slug into sub-slugs and assembling a plurality of sub-slugs into a new slug wherein the initially parallel longitudinal directions of said sub-slugs are at angles to one another in said new slug, whereby the resulting golf balls are isometric.
Dependencies are inferred from the claim text.