Abstract: The present invention provides a method for arranging dimples on a golf ball surface in which the dimples are arranged in a pattern derived from at least one irregular domain generated from a regular or non-regular polyhedron. The method includes choosing control points of a polyhedron, generating an irregular domain based on those control points, packing the irregular domain with dimples, and tessellating the irregular domain to cover the surface of the golf ball. The control points include the center of a polyhedral face, a vertex of the polyhedron, a midpoint or other point on an edge of the polyhedron and others. The method ensures that the symmetry of the underlying polyhedron is preserved while minimizing or eliminating great circles due to parting lines.

Abstract: The present invention is directed to an improved golf ball displaying the desired spin profile and having a generally rigid, thermoset polybutadiene outer core surrounding a relatively soft, low compression inner core. In general, this golf ball has an inner core and at least one outer core layer surrounding the inner core. The inner core has a hardness less than a hardness of the outer core and a specific gravity less than or equal to the outer core specific gravity. Overall the inner core compression and outer core are formulated to provide a combined overall core compression of greater than about 50, preferably greater than about 70. A cover layer is provided to surround and to cover the outer core layer.

Abstract: A golf ball includes a single solid core having a surface hardness and a geometric center hardness. The core has an outer diameter of about 1.5 to 1.62 inches. An outer cover layer formed from a polyurea or polyurethane has a first hardness, and an inner cover layer, disposed between the core and the outer cover, has a second hardness greater than the first hardness and within 5 Shore C of the core surface hardness. The geometric center hardness is about 64 to 85 Shore C, and the core surface hardness is greater than 85 Shore C and harder than the geometric center hardness by about 5 to 22 Shore C to define a positive hardness gradient.

Abstract: The present invention is directed to a golf ball with a core and a cover layer surrounding the core. The golf ball preferably has a weight between about 1.45 ounces and about 1.57 ounces and the core preferably has a diameter of greater than about 1.58 inches. Thus, forming a lightweight golf ball with an oversize core. In a ball with a thermoplastic cover, the core preferably has a diameter of greater than 1.61 inches. In a ball with a thermoset cover, the core preferably has a diameter of greater than 1.58 inches. This golf ball is specifically designed to optimize its play characteristics for low swing speed players. The golf ball may further include an intermediate layer disposed between the core and the cover.

Abstract: Disclosed is a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance. The cover is formed from a composition (D) containing, as predominant components, the following components (A), (B) and (C): (A) a thermoplastic polyurethane material, (B) a thermoplastic polyamide, and (C) an isocyanate mixture in which an isocyanate compound (c-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (c-2) which is substantially non-reactive with the isocyanate groups.

Abstract: The golf ball comprises all known cores provided with a cover produced by a polymer blend that combines the durability of a conventional cover with excellent feel and playability. The cover formulation is a blend of various ethylene/methacrylic acid copolymers wherein at least one copolymer has a high modulus and at least one copolymer has a moderate modulus forming a miscible blend having a blend that maximizes durability while still maintaining feel and playability.

Abstract: Golf ball 1 has a cover 3 having Shore D hardness of less than 58. Dimples 6 are formed on the surface of the cover 3. A proportion R1 of number of dimples 6 having a ratio (B/T), which is a ratio of a height B of a bottom of the dimple 6 to a nominal thickness T of the cover 3, of equal to or less than 0.70 occupied in total number of the dimples is equal to or greater than 10%. A proportion R2 of number of dimples 6 having the ratio (B/T) of less than 0.30 occupied in total number of the dimples is equal to or less than 10%. A mean value of the ratio (B/T) for all the dimples 6 is equal to or less than 0.86. The golf ball 1 comprises a mid layer 5 having Shore D hardness of equal to or greater than 50. Difference (Hm?Hc) between Shore D hardness Hm of the mid layer 5 and Shore D hardness Hc of the cover 3 is equal to or greater than 3.

Abstract: A golf ball comprising a core and a cover disposed about the core, wherein the core comprises a center and an outer core layer, and the cover comprises an inner cover layer and an outer cover layer; and wherein the center has an outer diameter from about 0.375 inches to about 1.4 inches and deflection of greater than about 4.5 mm under a load of 100 Kg; the outer core layer has an outer diameter of from about 1.4 in to about 1.62 in; the inner cover layer has an outer diameter of greater than about 1.58 in and a material hardness of less than about 72 Shore D; and the outer cover layer has a hardness of greater than about 50 Shore D and a material hardness of less than about 50 Shore D.

Abstract: A unique set of preferred embodiment golf balls is disclosed as follows. In one aspect, a multi-layer golf ball utilizes a particular blend of ionomers in either or both of the cover layers. Preferably, the blend includes a minor percentage of high acid ionomers with a major percentage of low acid ionomers. In another embodiment, golf balls having relatively thin multi-layer cover assemblies are provided. The thicknesses of these cover layer assemblies range from about 0.015 inches to about 0.045 inches. Also, cover assemblies utilizing one or more thermoplastic polyurethanes are disclosed. The multi-layer core assembly used in the golf balls preferably exhibits a PGA compression of less than 85.

Abstract: The present invention is directed to a golf ball with a core and a polymeric layer reinforced with relatively long fibers. Such layer can be the cover, a portion of the cover, an intermediate layer, a portion of the intermediate layer, or any layer in the golf ball. Preferably, this layer comprises relatively long fibers embedded in a thermoplastic matrix to increase the flexural modulus and the impact resistance of the thermoplastic. The fibers may be arranged in random or non-random pattern in the layer.

Abstract: Disclosed herein is a multi-layer golf ball having a core, an inner cover layer comprising an ionomer and having Shore D hardness of about 65 or less, and an outer cover layer comprising an ionomer and having a Shore D hardness of at least 60. The outer cover layer is harder than the inner cover layer. The core preferably comprises a high molecular weight polybutadiene that exhibits an ultra high Mooney viscosity. The sum of the thickness of the inner cover layer and the thickness of the outer cover layer is greater than 0.090 inches. A method of making the golf ball also is disclosed.

Abstract: A golf ball comprising an innermost core, an outer core, and a cover is disclosed. At least a layer of the golf ball is made from a low compression, high coefficient of restitution material, and is being supported by a low deformation, high compression layer. The resulting golf ball has high coefficient of restitution at high and low impact speeds and low compression for controlled greenside play.

Abstract: The present invention relates to processes and apparatuses for forming multi-layer golf balls, and more particularly to processes and equipment for forming multi-layer golf balls having one or more deep dimples that extend through the outer cover layer and into one or more matching depressions in the layers or components thereunder.

Abstract: Disclosed is a process for producing a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance. The production process includes preparing a cover-forming material (C) by incorporating the following component (B) into the following component (A); and subjecting the cover-forming material (C) to injection molding, to thereby form a cover around the core: (A) a thermoplastic polyurethane material, and (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (b-2) which is substantially non-reactive with the isocyanate groups.

Abstract: A multi-piece golf ball includes a core having a diameter of 30 to 40 mm, at least one intermediate layer including the outermost layer having a thickness of 0.5 to 2.0 mm, and a cover having a thickness of 0.5 to 2.0 mm. The core is made from a rubber composition mainly containing polybutadiene. The outermost layer is made from a resin material containing an ionomer resin in an amount of 30% by weight or more. The cover is made from a material obtained by dispersedly blending at least one kind of silicone powder selected from a silicone rubber powder, a silicon resin powder, and a composite powder thereof, in a main resin component containing an ionomer resin in an amount of 50% by weight or more. The hardness of said cover is smaller than the hardness of said outermost layer of said at least one intermediate layer and is larger than the hardness of a center portion of said core. The multi-piece golf ball is excellent in resilience, durability, feel of hitting, and controllability.

Abstract: A golf ball is provided having a controlled variable moment of inertia. The golf ball includes a core defining at least one hollow channel. At least one movable weight is located within each hollow channel. The end of the hollow channel at the outer edge of the core is enclosed with a plug. The movable weight and plug may each further include a magnet or the hollow channel may include a placement member such as a spring to control the movement of the weight. When the present golf ball is struck, the spin rate forces the weights to move from the interior of the core outwardly towards the outer edge of the core, thereby varying the moment of inertia of the golf ball. A method of manufacturing the present golf ball is also provided. The golf ball also significantly reduces hooks and slices due to the gyroscopic effect of the moving weight(s) to the outer edge of the core.

Abstract: In a solid golf ball comprising an elastic solid core and a resin cover, the cover has a JIS-C hardness of 50-85, and provided that the ball receives a spin rate S1 (rpm) in the dry state and a spin rate S2 (rpm) in the wet state when hit with a short iron having a loft of an 8-iron or greater, the percent spin retention: (S2/S1)×100 is at least 47%. The ball's spin susceptibility when hit with the short iron is not reduced in the dry state or fine weather, nor is noticeably reduced even in the wet state or rain weather. The ball has so high performance that the ball travels a distance as intended, immediately stops on the green, is easy to control and thus, suited for professional and amateur low-handicap golfers.

Abstract: The present invention provides a golf ball having soft and good shot feel, high rebound characteristics and excellent abrasion resistance when hit by an iron club. The present invention related to a golf ball comprising a core and at least one layer of cover covering the core, wherein the outmost layer of the cover is formed from a base resin mainly containing the mixture of (i) ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with magnesium ion, (ii) ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with sodium ion and/or ethylene-(meth)acrylic acid-acrylic ester terpolymer ionomer resin obtained by neutralizing with zinc ion, and (iii) ethylene-(meth)acrylic acid copolymer ionomer resin obtained by neutralizing with magnesium ion, and the outmost layer of the cover has a Shore D hardness of 45 to 60.

Abstract: In a multi-piece solid golf ball comprising a rubbery elastic solid core and a resin cover including at least an inner layer, an intermediate layer and an outer layer, the solid core undergoes a deflection of 1.6-6.0 mm under an applied load of 294 N (30 kgf), the cover inner layer has a Shore D hardness of 55-70, the cover intermediate layer has a Shore D hardness of 8-50 and a gage of 0.1-1.2 mm, and the cover outer layer has a Shore D hardness of 40-55. The ball prevents any undesired increase of spin upon driver shots without detracting from rebound, has good flight performance, and receives enough spin to facilitate control on short iron shots.

Abstract: A urethane-covered three-piece golf ball with a liquid-filled center, having a combination of center weight, thread windings, dimple configuration and compression that allows it to travel great distances, and to match the classic feel of ‘Balata’ balls, said combination at the same time complying with USGA regulations.