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US 5,830,087 AGranted
Multi-layer golf ball
AssigneeLisco, Inc.
InventorsMichael J. Sullivan, Dennis Nesbitt, Mark Binette
Life of this patent
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AssigneeLisco, Inc.
InventorsMichael J. Sullivan, Dennis Nesbitt, Mark Binette
Estimating the term…
Disclosed herein is a multi-layer golf ball having a central core, an inner cover layer containing a non-ionomeric polyolefin material, preferably a plastomer, and an outer cover layer comprising a thermoplastic material. The combined thickness of the inner and outer cover layer preferably is at least about 0.10 inches. The golf ball has a coefficient of restitution of at least about 0.780. When the inner cover layer contains a non-ionomeric material such as a metallocene-catalyzed polyolefin and the outer cover layer contains ionomer, the golf ball of the invention can be configured to have playability properties comparable to those of golf balls which contain substantially higher quantities of ionomer. A method for forming the golf ball described above also is disclosed.
A golf ball, comprising
A golf ball comprising
A method of making a golf ball with a coefficient of restitution of at least 0.780, the golf ball having a core and having an outer cover layer comprising a thermoplastic material, the method comprising positioning an inner cover layer which includes a metallocene-catalyzed polyolefin and which has a different composition than the outer cover layer between the core and the outer cover layer.
A method of making a golf ball having a core, an outer cover layer comprising a thermoplastic material, and a coefficient of restitution of at least 0.780, comprising positioning an inner cover layer between the core and the outer cover layer, the inner cover layer containing at least 50 wt % of a non-ionomeric polyolefin material, having a different composition than the outer cover layer and having a thickness of at least 0.030 inches, the sum of the thickness of the inner cover layer and outer cover layer being at least 0.10 inches.
Dependencies are inferred from the claim text.