| US 7,591,742 B2 | ||
| Multilayer golf ball | ||
| Michael J. Sullivan, Barrington, R.I. (US); Derek A. Ladd, Acushnet, Mass. (US); Edmund A. Hebert, Fairhaven, Mass. (US); and Herbert C. Boehm, Norwell, Mass. (US) | ||
| Assigned to Acushnet Company, Fairhaven, Mass. (US) | ||
| Filed on Nov. 21, 2008, as Appl. No. 12/275,615. | ||
| Application 09/482336 is a division of application No. 09/312480, filed on May 17, 1999, granted, now 6,575,846. | ||
| Application 12/275615 is a continuation of application No. 11/353563, filed on Feb. 14, 2006, granted, now 7,458,904. | ||
| Application 11/353563 is a continuation in part of application No. 10/670514, filed on Sep. 26, 2003, granted, now 7,041,007. | ||
| Application 10/670514 is a continuation in part of application No. 09/482336, filed on Jan. 14, 2000, granted, now 6,635,133. | ||
| Application 09/312480 is a continuation of application No. 08/902351, filed on Jul. 29, 1997, abandoned. | ||
| Application 08/902351 is a continuation in part of application No. 08/615346, filed on Mar. 11, 1996, granted, now 5,683,312. | ||
| Prior Publication US 2009/0075756 A1, Mar. 19, 2009 | ||
| Int. Cl. A63B 37/06 (2006.01) | ||
| U.S. Cl. 473—376 | 17 Claims |
| 1. A golf ball having a diameter and being comprised of a core and a cover, wherein the core is further comprised of a fluid
mass at the center of the ball, a shell encompassing the fluid mass, and a first, solid, non-wound mantle layer surrounding
the shell,
wherein the first mantle layer comprises a copolymer or terpolymer of ethylene and an α,β-unsaturated carboxylic acid, the
acid being neutralized at least 80% by a salt of an organic acid or a suitable base of the organic acid, and a less hydrophilic
cation source,
wherein the shell comprises a material selected from the group of polyolefin, polyethylene, polypropylene, polyurea, ionomer,
acid copolymer, thermoplastic polyetherester, thermoplastic polyetheramide, thermoplastic polyurethane, styrene butadiene
copolymer, polycarbonate, polyester elastomer, polyamide elastomer, dynamically vulcanized thermoplastic elastomer, metallocene
catalyzed polyolefinic copolymers, fluoropolymer, functionalized fluoropolymer, and thermoplastic polyester, and
wherein the liquid center shell has an inner diameter of about 0.25 to 1.5 inches and the mantle layer has an outer diameter
of about 1.3 to 1.65 inches.
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