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US 5,783,293 AGranted
Golf ball with a multi-layered cover
AssigneeAcushnet Company
InventorRobert N. Lammi
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AssigneeAcushnet Company
InventorRobert N. Lammi
Estimating the term…
The present invention is directed towards a multi-layer golf ball cover formed by a sandwich injection molding process, wherein said golf ball cover comprises an inner layer and an outer layer of a first material and an intermediate layer therebetween of a second material. The present invention is directed towards a sandwich injection molding process for forming a multi-layer golf ball cover involving the steps of pushing a measured amount of a plasticized first material into one end of an accumulation cylinder, pushing a measured amount of a plasticized second material into the opposite end of the accumulation cylinder, and injecting both materials in a single plunging step, so that the first material substantially coats the surface of the mold while the second material substantially fills the interior of the first material.
A golf ball comprising a core and a cover surrounding the core, the cover comprising an inner layer and an outer layer of a first material comprising one or more polymers, and an intermediate layer between the inner and outer layers of a second material comprising one or more polymers wherein the second material is harder than the first material.
A method of increasing the spin rate of a golf ball at low swing speeds by providing a core and forming a cover about the core, said cover having inner and outer layers of a first material comprising one or more polymers and an intermediate layer of a second material comprising one or more polymers wherein the second material is harder than the first material.
A golf ball comprising a core and a cover surrounding the core, the cover comprising an inner layer and an outer layer of a first material comprising one or more polymers, and an intermediate layer between the inner and outer layers of a second material comprising one or more polymers wherein the second material has different physical properties than the first material.
Dependencies are inferred from the claim text.