Golf balls having dual-layered cores with metal-containing centers and thermoplastic outer cores
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United States of America Patent
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Jan 30, 2018
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app pub date -
May 14, 2015
filing date -
Sep 7, 2012
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Abstract
Multi-piece golf balls containing a dual-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof dispersed in a thermoset polymeric matrix. The outer core layer is preferably formed from a thermoplastic composition such as an ethylene acid copolymer ionomer resin. The resulting ball has high resiliency and good spin.
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