Multi-layer golf ball

US6824476B2 · kind B2 · utility

Assignee

• Callaway Golf Company · US

Inventors

• Michael J. Sullivan · Old Lyme, US
• Thomas J. Kennedy, III · Wilbraham, US
• Michael J. Tzivanis · Chicopee, US
• Mark L. Binette · Mattapoisett, US
• Viktor Keller · Bradenton, US
• William M. Risen, Jr. · Rumford, US

Key dates

• Filing date: Apr 25, 2001
• Grant date: Nov 30, 2004
• Expiry date: May 24, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A unique set of preferred embodiment golf balls is disclosed as follows. In one aspect, a multi-layer golf ball utilizes a particular blend of ionomers in either or both of the cover layers. Preferably, the blend includes a minor percentage of high acid ionomers with a major percentage of low acid ionomers. In another embodiment, golf balls having relatively thin multi-layer cover assemblies are provided. The thicknesses of these cover layer assemblies range from about 0.015 inches to about 0.045 inches. Also, cover assemblies utilizing one or more thermoplastic polyurethanes are disclosed. The multi-layer core assembly used in the golf balls preferably exhibits a PGA compression of less than 85.