Abstract: The present invention provides a multi-piece solid golf ball, of which durability is excellent and flight distance is improved by accomplishing high launch angle and low spin amount, when hit by golfers, who swing a golf club at low head speed, using a middle iron club to a driver. The present invention relates to a multi-piece solid golf ball comprising a center, an intermediate layer formed on the center and a cover covering the intermediate layer, wherein the intermediate layer is formed from a material having an elongation of 9 to 20 mm when applying the maximum load in penetration and impact fatigue tests and a flexural stiffness of 300 to 2,000 MPa.

Abstract: A golf ball is disclosed that includes a core assembly comprising a center core component and at least one core layer and a cover comprising at least one layer. The center core component preferably is formed from a sulfur-cured polybutadiene. The core layer component preferably is formed from a peroxide-cured polybutadiene and a metal salt of an unsaturated fatty acid such as zinc diacrylate or zinc dimethacrylate. The resulting golf ball of the present invention provides enhanced playability characteristics (i.e., spin and feel) without sacrificing distance or durability properties. The sulfur-cured center core component exhibits a remarkable combination of properties—a high resiliency coupled with being very soft.

Abstract: A golf ball (1) comprises a spherical core (2) and a cover (3). The cover (3) has a nominal thickness of 0.1 mm to 1.2 mm. A dimple (4) is formed on the surface of the cover (3). A concave portion (6) is formed on the surface of the core (2). The position of the concave portion (6) corresponds to that of the dimple (4). The golf ball (1) is obtained by forming the core (2) by means of a mold having a large number of projections provided on a cavity surface thereof. By the projections, the concave portion (6) is formed. When the cover (3) is to be formed, the position of the core (2) is determined in such a manner that the projections for forming the dimple (4) correspond to the concave portions (6).

Abstract: A golf ball (20) in accordance with the principles of the present invention has a core (22) with a low compression, but has at least two additional layers (24, 26) that provide for increased durability and control. The core (22) is formed of a polybutadiene compound that produces a zero (or less) compression. The mantle (24) is molded around the core (22) using terpolymers, which are comprised of ethylene, acrylic acid and n-butyl acrylate, with 100% of the acrylic acid groups neutralized with metal ions. The mantle (24), when molded, yields a deflection of greater than 0.170 inches under an applied static load of 200 lb. This correlates to a PGA compression of between about −20 and 15. The cover (26) is molded using conventional ionomers and “very low modulus” ionomers (V.L.M.I.), and has a hardness of between about 50 and 75 on a Shore D scale.

Abstract: A golf ball achieving both excellent hit feeling and good restitution performance by using a rubber composition having moderate hardness and sufficient restitution performance is provided. The golf ball includes a rubber composition obtained by blending 10 to 50 parts by mass of a co-crosslinking agent and 0.1 to 6 parts by mass of a crosslinking initiator with 100 parts by mass of a rubber component. The rubber component contains at least 80 mass percent of hydrogenated polybutadiene having a double bond residual rate of 80 to 99% or preferably 85 to 99%, and cis-1,4-structure content rate of not smaller than 90% or preferably not smaller than 95%. Polybutadiene is obtained by hydrogenating a part of its double bonds.

Abstract: A golf ball with at least one moisture vapor barrier layer is disclosed. In accordance to one aspect of the invention, the moisture vapor barrier layer may comprise a polysulfide rubber Polysulfide rubber may be applied to the golf ball in a liquid form curable at an elevated temperature or at room temperature. The liquid form may be mixed from two or more components prior to being applied to the ball. The liquid form may have water mixed therein before being applied to the ball. Alternatively, the liquid form may be applied to the ball without any additional mixing.

Abstract: A golf ball comprising a core, a cover, and optionally an intermediate layer between the core and the cover, wherein a stable free radical is incorporated into at least one portion of the core, the cover, and the optional intermediate layer.

Abstract: A multi-piece solid golf ball comprising a core, an intermediate layer enclosing the core, and an outer layer enclosing the intermediate layer is characterized in that the intermediate layer is made of a thermoplastic resin composition, the intermediate layer on its surface has a Shore D hardness of at least 57, the intermediate layer has a specific gravity of 1.00-1.30 g/cm3, the outer layer has a specific gravity of at least 1.00 g/cm3, the core has a specific gravity of 1.05-1.20 g/cm3, the intermediate layer and the outer layer have a total gauge of up to 3.3 mm, [(core surface JIS-C hardness)−(core center JIS-C hardness)]≧16, [(intermediate layer surface JIS-C hardness)−(core surface JIS-C hardness)]≧0, and −18≦[(outer layer surface Shore D hardness)−(intermediate layer surface Shore D hardness)]<0.

Abstract: The present invention provides a multi-piece solid golf ball having excellent flight performance and good shot feel. The present invention relates to a multi-piece solid golf ball comprising a core consisting of an inner core, an intermediate layer and an outer layer, and a cover, wherein the inner core has a flexural rigidity (RI) of 20 to 80 MPa, a ratio (RM/RI) of a flexural rigidity of the intermediate layer (RM) to the (RI) is from 0.6 to 1.

Abstract: There is provided a golf call that allows a driver shot or other similar shots prioritizing flight distance to have a reduced spin rate so that it is neither sliced or hooked and thus provides a long flight distance and that also allows an approach shot or other similar shots prioritizing controllability to have an increased spin rate to provide enhanced controllability. When the ball is hit with a number one wood it provides a back spin rate Sw#1 of no more than 2900 rpm and when it is hit with a sand wedge it provides a back spin rate SSW of no less than 6500 rpm, and SSW/SW#1 is no less than 2.35. The golf ball's primary natural frequency (fc) in a vibration mode in a direction of torsion is 1800 Hz to 2800 Hz, and its cover has a thickness of 0.2 mm to 1.3 mm and a Shore D hardness of 20 to 60.

Abstract: A golf ball with at least one moisture vapor barrier layer is disclosed. In accordance to one aspect of the invention, the moisture vapor barrier layer may comprise butyl rubber. The butyl rubber may also be a halogenated butyl rubber such as bromobutyl rubber or chlorobutyl rubber. The butyl rubber may also be a sulfonated butyl rubber. The butyl rubber may be blended with other polymers. In accordance to another aspect of the invention, the moisture vapor barrier layer is placed on to a core subassembly and cured by infrared radiation (IR). IR-curable moisture vapor barrier materials include, but not limited to, butyl rubber, polysulfide rubber and single-pack castable polymers, among others. In accordance to another aspect of the invention, an outer layer of the golf ball may comprise a polymer that has a cured temperature greater than the softening temperature or melting temperature of the encased subassembly. Such outer layer may be cured by IR.

Abstract: A prepolymer blend for a thermosetting polyurethane material that allows for control of the reaction time is disclosed herein. The prepolymer blend is preferably composed of a polyurethane prepolymer and dimethyl methylphosphonate. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.

Abstract: Golf ball covers incorporate base material compositions including a sound-altering material for selectively enhancing or dampening the acoustic output of a golf ball when it is struck. A ratio in the composition by weight of base material to sound-altering material ranges between 99.9:0.1 and 92:8. The invention allows for the altering of the sound of the golf ball while retaining the mechanical properties of the golf ball cover.

Abstract: A curative blend for a thermosetting polyurethane material that allows for a polyurethane material with greater durability is disclosed herein. The curative blend is preferably composed of N,N″-dialkylamino-diphenyl-methane in an amount of 25 to 75 parts per one hundred parts of the curative blend and 4,4″-methylenebis-(2,6-diethyl)-aniline in an amount of 25 to 75 parts per one hundred parts of the curative blend. A preferred polyurethane prepolymer is polytetramethylene ether glycol terminated toluene diisocyanate prepolymer. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.

Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 55 or less, and more preferably 50 or less. In a particularly preferred form of the invention, the outer cover comprises one or more polyurethane materials. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.

Abstract: A touch pad scoring apparatus for a dart game includes a touch pad mounted on a housing. The touch pad is has a plurality of segments. Each touch pad segment has a pressure-sensitive sensor operatively connected to a controller. A user applies pressure, for example with a stylus or a finger, to at least one segment corresponding to the dart board segment impacted by a thrown dart. The scoring apparatus has a memory and displays which allow the apparatus to track and display the scores of multiple players though the course of the dart game.

Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 55 or less, and more preferably 50 or less. In a particularly preferred form of the invention, the outer cover comprises at least 75% of a soft copolymer formed from a polyolefin, an unsaturated carboxylic acid, and a monomer of the acrylate ester class. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.

Abstract: The present invention provides a multi-piece solid golf ball, of which flight distance is improved by accomplishing high launch angle and low spin amount, when hit by golfers, who swing a golf club at low head speed, using a middle iron club to a driver. The present invention relates to multi-piece solid golf ball comprising a center, an intermediate layer formed on the center and a cover covering the intermediate layer, wherein the intermediate layer is formed from only one material having a flexural stiffness of 400 to 5,000 MPa.

Abstract: A golf ball and a method of manufacturing thereof are provided, the golf ball having a core containing a Mg vulcanized rubber powder crosslinked by a magnesium salt of an unsaturated carboxylic acid and another vulcanized rubber powder crosslinked by a co-crosslinking agent other than the magnesium salt of the unsaturated carboxylic acid. Preferably, the ratio &agr;/&bgr; between the content &agr; of the Mg vulcanized rubber powder and the content &bgr; of another vulcanized rubber powder is 1/4 to 4, and the total content &agr;+&bgr; of the vulcanized rubber powders based on 100 parts by mass of a base rubber of the core is 5 to 30 parts by mass.

Abstract: A multi-piece golf ball with improved carry without sacrificing properties like spin performance, durability, coefficient of restitution, and the feel when the ball is hit, the golf ball including a core, an intermediate layer surrounding the core, and the cover surrounding the intermediate layer, where a plurality of voids are distributed in at least one of the core, the intermediate layer or the cover along the spherical surface of the core or intermediate layer, or the cover. 20-600 voids are formed on at least one of the interfaces between the core and the intermediate layer, between a plurality of intermediate layers, or between the intermediate layer and the cover.

Abstract: In a multi-piece solid golf ball comprising a solid core and a cover of two inner and outer layers enclosing the solid core, the solid core has a deflection of at least 1.

Abstract: Disclosed herein is a two-piece golf ball formed of a solid core and a cover, the solid core being formed from a rubber composition composed of a rubber base material of polybutadiene synthesized by using a catalyst of rare earth element, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound, and an inorganic filler, and the cover being formed mainly from a thermoplastic polyurethane material. The two-piece golf ball is by far superior to conventional ones in flying performance, cover durability, coating durability, and shot feeling.

Abstract: A multi-layer golf ball and methods for preparing a portion thereof including a core having at least one core layer, a mantle having at least one layer including an amount of reinforcing polymer component and a resilient polymer component disposed concentrically adjacent the core, and at least one cover layer disposed concentrically adjacent the mantle, wherein the layer of the mantle is sufficiently rigid to inhibit the resilient polymer component from substantially altering shape prior to crosslinking. The invention also includes an elastomeric composition including a polybutadiene having a high molecular weight average and a predominantly 1,4-cis content, a free-radical initiator, and a reinforcing polymer component having a sufficiently low viscosity at a mixing temperature to permit substantially uniform dispersion of the polymer component with the polybutadiene and having a crystalline melting point sufficiently low to permit mixing while avoiding substantial crosslinking.

Abstract: In a multi-piece solid golf ball comprising a solid core, a mantle and a cover, the solid core is made of a rubber composition that includes (A) a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, (B) a small amount of organic peroxide, (C) an unsaturated carboxylic acid and/or a metal salt thereof, (D) an organic sulfur compound and (E) an inorganic filler. The mantle is made of a thermoplastic resin composition. The cover is made of a material composed of a heated mixture of (F) an olefin/unsaturated carboxylic acid copolymer, an olefin/unsaturated carboxylic acid/unsaturated carboxylic acid ester copolymer, or a metal ion neutralization product thereof, (G) a polyurethane elastomer, and (H) an organic or inorganic basic compound. This construction provides the golf ball with an outstanding flight performance, excellent scuff resistance and a soft feel on impact, and minimizes the decline in rebound by the ball at low temperature.

Abstract: In a multi-piece solid golf ball comprising a solid core, a mantle and a cover, the solid core is made of a rubber composition that includes a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound and an inorganic filler. The mantle is made of a thermoplastic resin composition. The cover is made primarily of a mixture containing an amino-terminated block polymer and an ionomer resin. This construction provides the golf ball with a combination of outstanding flight performance, excellent scuff resistance and soft feel that is unprecedented.

Abstract: A dimple pattern for a golf ball with multiple sets of dimples is disclosed herein. Each of the multiple sets of dimples has a different diameter. A preferred set of dimples is twelve different dimples. The dimples may cover as much as eighty-seven percent of the surface of the golf ball. The unique dimple pattern allows a golf ball to have shallow dimples with steeper entry angles. In a preferred embodiment, the golf ball has 382 dimples covering ninety percent of the surface.

Abstract: Disclosed herein is a two-piece solid golf ball consisting of a solid core and a cover, said solid core being formed from a rubber composition composed of a rubber base material of polybutadiene synthesized by using a catalyst of rare earth element, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound, and an inorganic filler, and said cover being formed mainly from a mixture of a block copolymer having amino groups at terminals and an ionomer resin. The two-piece solid golf ball is by far superior to conventional ones in flying performance, cover durability, scuff resistance, and soft shot feeling.

Abstract: Disclosed herein is a one-piece golf ball formed by vulcanization from a rubber composition composed of 100 parts by weight of rubber base material, 10 to 40 parts by weight of unsaturated carboxylic acid, 10 to 60 parts by weight of metal oxide, and 0.9 to 5 parts by weight of organic peroxide, said rubber base material containing 60 to 100% by weight based on the weight of a polybutadiene which is synthesized with a catalyst of rare earth element, contains no less than 60% of cis-1,4-linkage, and has a Mooney viscosity (ML1+4(100° C.)) no less than 40. This golf ball has good shot feeling and high rebound resilience and is easy to produce by extrusion.

Abstract: In a multi-piece solid golf ball comprising a solid core, a mantle and a cover, the solid core is made of a rubber composition that includes a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, a small amount of organic peroxide, an unsaturated carboxylic acid and/or a metal salt thereof, an organic sulfur compound and an inorganic filler. The mantle is made of a thermoplastic resin composition. The cover is made primarily of a thermoplastic polyurethane material. This construction provides the golf ball with a combination of outstanding flight performance and soft feel with cover's scuff resistance and coating's abrasion resistance, that is unprecedented.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A progressive performance golf ball is disclosed. The progressive performance golf ball includes a low spin, high moment of inertia core assembly, which may comprise a low specific gravity core and/or non-continuous high specific gravity intermediate layer. This sub-assembly is encased within a soft cover with Shore D hardness less than 65. The low specific gravity core is preferably made from a foamed polymer, and the non-continuous high specific gravity core is preferably a geodesic or polyhedron screen or a perforated shell. The ball may comprise a non-continuous intermediate layer and a second intermediate layer, wherein one or both of the intermediate layers comprise high specific gravity materials. The cover is preferably made from thermoset polyurethane. Advantageously, the non-continuous screen or shell have a spring-like property, which allows the ball to readily regain its spherical shape after impact with a golf club.

Abstract: The present invention provides a multi-piece solid golf ball, which is superior in flight distance, spin performance, shot feel and scuff resistance. The present invention relates to a multi-piece solid golf ball comprising a core consisting of a center and an intermediate layer, and a cover covering the core, wherein the center has a diameter of 37 to 41 mm, the intermediate layer has a thickness of 0.5 to 2.0 mm and a hardness in Shore D hardness of 55 to 70, the hardness of the intermediate layer is higher than a surface hardness in Shore D hardness of the center and a hardness in Shore D hardness of the cover, and a specific gravity of the intermediate layer is lower than that of the center and cover, the cover comprises polyurethane-based thermoplastic elastomer as a main component, and has a thickness of 0.3 to 1.0 mm.

Abstract: There is provided a golf ball with a low spin rate, a high launch angle and an increased flight distance, characterized in a ratio of a primary natural frequency of the golf ball in a direction in which the ball deforms (in a longitudinal direction) (fn) and a primary natural frequency of the ball in a vibration mode in a direction of torsion, i.e., a ratio fc/fn provided in a range: 2.22≦(fc/fn)≦2.45. This relationship is satisfied by a golf ball for example having a core formed of a plurality of layers and having a center smaller in complex modulus than the core's outermost layer or having a cover with a complex modulus adjusted to have a large value.

Abstract: Golf balls in accordance with the principles of the present invention are economical to produce with the known equipment, and provide spin control, durability, and feel while conforming to regulations. The core 10 provides spin control and a solid resilient structure for a mantle 11 to be molded. The mantle 11 provides high resilience. The cover is comprised of an inner cover 13 and an outer cover 14 to provide adequate resilience and performance while still being able to accept dimples.

Abstract: Disclosed is a process to increase adhesion between two adjacent layers. The process comprises roughening the surface of one layer followed by chlorination of the roughened surface and joining of the layers, or treating the surface of one layer with a silicone-based adhesion promoter and joining the layers. In one preferred embodiment the process comprises roughening the surface of one layer, followed by chlorination of the roughened surface, joining of the layers and post-treatment of the molded layers at an elevated temperature for a predetermined time.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A method of manufacturing a golf ball is disclosed. A cover is molded through use of either a thermoplastic resin having a group capable of reacting with an isocyanate group or a thermoplastic resin containing a compound having two or more groups capable of reacting with an isocyanate group. Subsequently, a polyisocyanate compound is caused to permeate into the surface layer of the cover to thereby cause the reaction between the polyisocyanate compound and the group(s) capable of reacting with the isocyanate group. As a result, a modified layer having excellent properties is formed at the surface of the cover formed from thermoplastic resin. In this case, a non-yellowing polyurethane resin is preferably used as the thermoplastic resin having a group capable of reacting with an isocyanate group, and 4,4-diphenylmethane diisocyanate (MDI) is preferably used as the polyisocyanate compound.

Abstract: The present invention is a two-piece golf ball which includes a core and a cover having a thickness of 1.0 to 3.0 mm. The core is made from a rubber composition containing a main rubber component which mainly contains polybutadiene. The cover is made from a material mainly containing an ionomer resin in which at least one kind of silicone powder selected from a silicone rubber powder, a silicon resin powder, and a composite powder thereof is dispersedly blended. The core has a hardness corresponding to a deflection in a range of 3.3 to 6.0 mm under an applied load of 100 kg. The cover has a Durometer D hardness in a range of 55 to 70.

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: 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: A two-piece golf ball includes a core and a cover having a thickness of 0.5 to 2.5 mm. The core has a hardness corresponding to a deflection in a range of 3.0 to 5.5 mm under a load of 100 kg. The cover has a Durometer D hardness 45 to 55. Dimples numbering 300 to 550 pieces are formed in the surface of the golf ball so that a dimple total volume ratio VR, which is a ratio of the total of volumes of dimple spaces under the planes surrounded by edges of the dimples in the surface of the golf ball to the total volume of a virtual ball as a result of assumption that no dimple is formed in the surface of the golf ball, is 0.85% or less. The two-piece golf ball is excellent in resilience, flight distance characteristic, controllability, and feel of hitting.

Abstract: A golf ball component, such as a golf ball cover layer, formed from a high or increased melt index thermoplastic polyurethane, polyurea or polyurethane/polyurea is disclosed. The cover layer may be relatively thin (i.e., 0.075 or less, preferably 0.050 inches or less, more preferably less than 0.040 inches, even more preferably less than 0.030 inches). In addition, an operation in which the outer cover is exposed to an isocyanate solution is described to improve certain physical properties of the resulting golf ball.

Abstract: The present invention provides a three-piece solid golf ball having long flight distance when hit by using from a middle iron club to a driver, and excellent controllability by accomplishing high spin amount when hit by a short iron club and the like, while maintaining good shot feel. The present invention relates to a three-piece solid golf ball comprising a core composed of a center and an intermediate layer formed on the center, and a cover formed on the core, wherein the center has a diameter of 10 to 20 mm and a central point hardness in JIS-A hardness of 30 to 90, the intermediate layer has a surface hardness in Shore D hardness of 50 to 70, and the cover has a Shore D hardness of 45 to 65.

Abstract: In a multi-piece solid golf ball comprising a solid core and a cover consisting of inner and outer layers, the cover inner layer is composed mainly of an ionomer resin, and the cover outer layer is composed mainly of another thermoplastic elastomer. A thermoplastic resin-base adhesive layer is interposed between the cover inner and outer layers, or a thermoplastic resin-base adhesive is blended in the inner and/or outer layer cover stock.

Abstract: A golf ball is described that includes a spherical core, an inner cover or mantle layer, and an outer cover layer. A wide array of ionomeric materials are noted for use in the various cover layers. The mantle and the outer cover layers exhibit different Shore D hardness values and at least one of the layers includes a heavy weight filler material to enhance the interior perimeter weight of the ball. In several particular versions of the golf balls, the filler material is present in an amount of at least 10% by weight based upon the weight of the layer or layers within which the filler material is incorporated.

Abstract: The present invention provides a golf ball having enhanced durability of the clear coating film and the mark. The golf ball of the invention comprises: a ball body having an ionomer resin cover; an epoxy coating film formed on the ball body, a polyurethane clear coating film formed on the epoxy coating film, wherein the epoxy coating film is made by curing an epoxy resin with a polyamide curing agent; and the polyurethane clear coating film is made by curing a polyol with an isocyanate curing agent, wherein the polyol is a mixture of a polyester polyol and a polyether polyol.

Abstract: It has been unexpectedly discovered that cis-1,4-polybutadiene that is synthesized utilizing Zeigler-Natta catalyst systems has superior characteristics for utilization in solid golf ball cores if the polymerization is terminated utilizing a carboxylic acid of the structural formula RCOOH, wherein R represents an alkyl group containing from 1 to about 30 carbon atoms.

Abstract: The present invention provides a multi-piece solid golf ball, which is superior in rebound characteristics and flight performance, while maintaining good productivity.

Abstract: Golf balls having a portion or layer formed from a polymeric composite that preferably includes at least two polymers with distinct microstructures. In particular, the balls can include a polybutadiene having at least about 80 percent cis-isomer polybutadiene blended with a polybutadiene having at least about 50 percent trans-isomer polybutadiene. Methods of preparing such golf balls are also recited.

Abstract: A golf ball is disclosed that provides a softer feel, resilient core for decreased spin rate. The golf ball has a dual-layered core surrounded by a dual-layered cover. The volume of the inner layer of the dual layer core is at least about 70% of the total volume of the inner core layer and the outer core layer. The inner core has a diameter from about 1.25 inches up to about 1.55 inches. The outer core has a diameter from about 1.55 inches up to about 1.62 inches. The compression of the dual core is from about 60 to about 100. The outer core layer is constructed from materials that provide for a Shore C hardness of at least about 80. The dual-layer cover includes an inner layer having a Shore D hardness of at least about 60 and a thickness of about 0.015 inches to about 0.055 inches. The outer core layer has a Shore D hardness of about 62 or less and a thickness less than about 0.035 inches.