| US 7,491,138 B2 | ||
| Golf ball covers and mantles comprising glass particles | ||
| Thomas J. Kennedy, III, Wilbraham, Mass. (US); and Mark L. Binette, Ludlow, Mass. (US) | ||
| Assigned to Callaway Golf Company, Carlsbad, Calif. (US) | ||
| Filed on Nov. 19, 2007, as Appl. No. 11/942,200. | ||
| Application 11/942200 is a continuation of application No. 11/687550, filed on Mar. 16, 2007, granted, now 7,297,075. | ||
| Application 11/687550 is a continuation of application No. 11/147866, filed on Jun. 07, 2005, granted, now 7,192,368. | ||
| Prior Publication US 2008/0064529 A1, Mar. 13, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A63B 37/12 (2006.01) | ||
| U.S. Cl. 473—378 | 10 Claims |
| 1. A golf ball having improved durability, the golf ball comprising:
a core;
a mantle disposed on the core, the mantle comprising a composition comprising a mixture of a plurality of glass particles
and a polyurethane material, each of the plurality of glass particles is an aminosilane surface treated glass particle having
a specific gravity ranging from 2.0 to 3.0, a particle size distribution ranging from 45 microns to 1700 microns and a thickness
ranging from 2 to 7 microns; and
a cover disposed on the mantle.
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