| US 7,531,603 B2 | ||
| Thin-layer-covered golf ball with improved velocity | ||
| Shenshen Wu, North Dartmouth, Mass. (US); Edmund A. Hebert, Fairhaven, Mass. (US); Laurent Bissonnette, Portsmouth, R.I. (US); David A. Bulpett, Boston, Mass. (US); Murali Rajagopalan, South Dartmouth, Mass. (US); Peter Voorheis, Fall River, Mass. (US); and Mark N. Wrigley, New Bedford, Mass. (US) | ||
| Assigned to Acushnet Company, Fairhaven, Mass. (US) | ||
| Filed on Sep. 17, 2007, as Appl. No. 11/898,852. | ||
| Application 10/828253 is a division of application No. 10/256011, filed on Sep. 27, 2002, granted, now 6,818,705. | ||
| Application 11/898852 is a continuation of application No. 11/434131, filed on May 16, 2006, granted, now 7,271,222. | ||
| Application 11/434131 is a continuation of application No. 10/828253, filed on Apr. 21, 2004, granted, now 7,105,610. | ||
| Application 10/256011 is a continuation of application No. 09/721740, filed on Nov. 27, 2000, granted, now 6,486,261. | ||
| Application 09/721740 is a continuation in part of application No. 09/461736, filed on Dec. 16, 1999, granted, now 6,465,578. | ||
| Application 09/461736 is a continuation in part of application No. 09/311591, filed on May 14, 1999, granted, now 6,210,294. | ||
| Application 09/311591 is a continuation in part of application No. 09/274015, filed on Mar. 22, 1999, granted, now 7,090,798. | ||
| Claims priority of provisional application 60/113949, filed on Dec. 24, 1998. | ||
| Prior Publication US 2008/0051221 A1, Feb. 28, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A63B 37/12 (2006.01); A63B 37/00 (2006.01); C08L 9/00 (2006.01) | ||
| U.S. Cl. 525—245 [525/261; 525/274; 473/372; 473/374; 473/377] | 20 Claims |
| 1. A golf ball comprising:
a center formed of a reaction product comprising:
polybutadiene;
a crosslinking material;
a free radical source;
a cis-to-trans catalyst present in an amount sufficient to produce a reaction product comprising at least about 32 percent
trans-polybutadiene, wherein the reaction product has a percent change in dynamic stiffness from 0° C. to −50° C. of less
than 125 percent; and
a cover comprising a thermoplastic or thermoset polyurethane.
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