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Thick-covered, soft core golf ballRelated Patent Categories: Games Using Tangible Projectile, Golf, Ball, Particular Unitary Or Layered ConstructionThick-covered, soft core golf ball description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060293123, Thick-covered, soft core golf ball. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The application is a divisional of co-pending U.S. patent application Ser. No. 10/845,721, filed May 14, 2004, the disclosure of which is incorporated herein by express reference thereto. FIELD OF THE INVENTION [0002] This invention generally relates to golf balls with high coefficient of restitution and low deformation, and more particularly to a high coefficient of restitution golf ball at high club speeds. BACKGROUND OF THE INVENTION [0003] Golf balls have been designed to provide particular playing characteristics. These characteristics generally include initial ball velocity, coefficient of restitution (COR), compression, weight distribution and spin of the golf ball, which can be optimized for various types of players. [0004] Golf balls can generally be divided into two classes: solid and wound. Solid golf balls include single-layer, dual-layer (i.e., solid core and a cover), and multi-layer (i.e., solid core of one or more layers and/or a cover of one or more layers) golf balls. Wound golf balls typically include a solid, hollow, or fluid-filled center, surrounded by tensioned elastomeric thread, and a cover. [0005] Generally, the hardness of a golf ball or a golf ball core is one among other factors used in designing golf balls. Typically, when a ball is hard, e.g., possessing high compression values and low deformation when struck by a club, it typically has high COR and high initial velocity after impact with a golf club. However, hard ball has a "hard" feel and is difficult to control around the greens. A softer ball, e.g., lower compression value and high deformation, has a "soft" feel and is easier to control with short iron clubs for greenside play. Recently developed solid balls have a core, at least one intermediate layer, and a cover. The intermediate layer improves other playing characteristics of solid balls, and can be made from thermoset or thermoplastic materials. [0006] Recent advancements in golf ball design can produce golf balls with low compression for soft "feel" and high COR for long flight distance. The COR for low compression balls, however, decreases at higher impact speed with golf clubs. [0007] Therefore, there remains a need in the art for low compression golf balls that have high coefficient of restitution at low impact speeds and at high impact speeds. SUMMARY OF THE INVENTION [0008] The present invention is directed to a golf ball including a core including a halogenated thiophenol and having a diameter of from about 1.30 inches to about 1.40 inches, a compression of about 45 or less; and a coefficient of restitution of about 0.780 or greater at about 125 ft/s; and a cover having a thickness of from about 0.14 inches to about 0.16 inches and being formed from a composition including a Na-ionomer and a Li-ionomer blend having a Shore D hardness of about 60 to about 70; wherein a combination of the core and the cover results in the golf ball having a compression of from about 85 to about 95, and a coefficient of restitution of from about 0.815 to about 0.825 at about 125 ft/s. [0009] In a preferred embodiment, the core diameter is from about 1.35 inches to about 1.40 inches. The combination of the core and the cover should result in the golf ball having a coefficient of restitution of about 0.750 of greater when measured at an incoming velocity of 160 ft/s. Preferably, the coefficient of restitution of the core is about 0.795 or greater at about 125 ft/s. The halogenated thiophenol in the core composition is typically present in an amount of from about 0.01 pph to about 5 pph. Additionally, the Na-ionomer and Li-ionomer blend preferably has a ratio of about 10:90 to about 90:10. [0010] The present invention is further directed to a golf ball including a core including a halogenated thiophenol, and having a diameter of about 1.40 inches or less, a compression of about 60 or less; and a coefficient of restitution of about 0.780 or greater when measured at an incoming velocity of 125 ft/s; and a cover having a thickness of about 0.101 inches to about 0.25 inches and being formed from a composition including at least a first and second ionomer, the first ionomer being partially- or fully-neutralized by a first metal cation and the second ionomer being neutralized by a second metal cation different from the first; wherein the combination of the core and the cover results in the golf ball having a coefficient of restitution of about 0.760 of greater when measured at an incoming velocity of 160 ft/s. [0011] The cover typically includes partially- or fully-neutralized ionomers, metallocene-catalyzed polymers, single-site catalyzed polymers, polyesters, polyethers, balata, crosslinked diene rubbers, styrene block copolymers, polyurethanes, polyureas, polyurethane-ureas, polyurea-urethanes, or non-ionic fluoropolymers. The halogenated thiophenol in the core should be present in an amount of from about 0.01 pph to about 5 pph. [0012] The combination of the core and the cover results in the golf ball having a coefficient of restitution of from about 0.810 to about 0.825 when measured at an incoming velocity of about 125 ft/s. The first and second ionomers are blended in a ratio of about 10:90 to about 90:10. [0013] Preferred construction includes a core diameter of about 1.30 inches to about 1.40 inches. More preferably from about 1.35 inches to about 1.40 inches. The first and second metal cations are selected from the group consisting of Na; Zn; Mg; Li; Ca; Ba; Pb; Al; and K metal cations. The cover thickness is about 0.125 inches to about 0.2 inches. [0014] The present invention is also directed to a golf ball including a core including a diene rubber composition, and having a diameter of about 1.40 inches or less, a compression of about 70 or less; and a coefficient of restitution of about 0.770 or greater; and a cover having a thickness of about 0.1 inches or greater and being formed from a composition including partially- or fully-neutralized ionomers, metallocene-catalyzed polymers, single-site catalyzed polymers, polyesters, polyethers, balata, crosslinked diene rubbers, styrene block copolymers, polyurethanes, polyureas, polyurethane-ureas, polyurea-urethanes, or non-ionic fluoropolymers; wherein a combination of the core and the cover results in a compression of from about 75 to about 100, and the golf ball has a coefficient of restitution of about 0.810 or greater when measured at an incoming velocity of 125 feet per second. [0015] The core has a diameter of from about 0.5 inches to about 1.4 inches and a compression of about 60 or less. Preferably, the core compression is about 50 or less. The cover includes a thermoset polymer having a hardness of about 70 Shore D or less and/or the core has a diameter of from about 1.3 inches to about 1.4 inches. In one embodiment, the core includes a center and at least one outer core layer. Additionally, the core can include a halogenated thiophenol, preferably present in an amount of from about 0.01 pph to about 5 pph. The cover thickness is typically about 0.101 inches to about 0.3 inches, more preferably about 0.115 inches to about 0.25 inches. [0016] The present invention is further directed to a golf ball including a core including a partially- or fully-neutralized ionomer, and having a diameter of about 1.40 inches or less, a compression of about 80 or less; and a coefficient of restitution of about 0.770 or greater; and a cover having a thickness of about 0.1 inches or greater and being formed from a composition including partially- or fully-neutralized ionomers, metallocene-catalyzed polymers, single-site catalyzed polymers, polyesters, polyethers, balata, crosslinked diene rubbers, styrene block copolymers, polyurethanes, polyureas, polyurethane-ureas, polyurea-urethanes, or non-ionic fluoropolymers; wherein a combination of the core and the cover results in a compression of from about 75 to about 100, and the golf ball has a coefficient of restitution of about 0.810 or greater when measured at an incoming velocity of 125 feet per second. [0017] The core has a diameter of from about 0.5 inches to about 1.4 inches and a compression of about 70 or less, more preferably about 60 or less. The cover should include a thermoset polymer having a hardness of about 70 Shore D or less. The core has a diameter of from about 1.3 inches to about 1.4 inches. In one embodiment, the core includes a center and at least one outer core layer. The core may also include at least a first and second ionomer, the first and second ionomers being partially- or fully-neutralized by a metal cation selected from the group consisting of Na; Zn; Mg; Li; Ca; Ba; Pb; Al; and K metal cations. Preferably, the cover thickness is about 0.101 inches to about 0.3 inches, more preferably about 0.115 inches to about 0.25 inches. Definitions [0018] The following terms that are used in this application are defined in terms of the enumerated ASTM tests: Specific Gravity ASTM D-792, Flexural Modulus ASTM D-790, Shore D Hardness ASTM D-2240, and Shore C Hardness ASTM D-2240. The ASTM D-792 test was carried out in lab conditions where the temperature was controlled to 20-23.degree. C. [0019] As used herein, the terms "points" and "compression points" refer to the compression scale or the compression scale based on the ATTI Engineering Compression Tester. This scale, which is well known to those working in this field, is used in determining the relative compression of a core or ball. Compression is measured by applying a spring-loaded force to the golf ball center, golf ball core or the golf ball to be examined, with a manual instrument (an "Atti gauge") manufactured by the Atti Engineering Company of Union City, N.J. This machine, equipped with a Federal Dial Gauge, Model D81-C, employs a calibrated spring under a known load. The sphere to be tested is forced a distance of 0.2 inches (5 mm) against this spring. If the spring, in turn, compresses 0.2 inches, the compression is rated at 100; if the spring compresses 0.1 inches, the compression value is rated as 0. Thus more compressible, softer materials will have lower Atti gauge values than harder, less compressible materials. Compression measured with this instrument is also referred to as PGA compression. Continue reading about Thick-covered, soft core golf ball... Full patent description for Thick-covered, soft core golf ball Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Thick-covered, soft core golf ball patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Thick-covered, soft core golf ball or other areas of interest. ### Previous Patent Application: Thick inner cover multi-layer golf ball Next Patent Application: Batting cage Industry Class: Games using tangible projectile ### FreshPatents.com Support Thank you for viewing the Thick-covered, soft core golf ball patent info. IP-related news and info Results in 0.14094 seconds Other interesting Feshpatents.com categories: Novartis , Pfizer , Philips , Polaroid , Procter & Gamble , 174 |
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