Nike, Inc.

Che-Ching Lin

Chen-Tai Liu

Hideyuki Ishii

Arthur Parker Molinari

Yasushi Ichikawa

Chien-Hsin Chou

Chia-Chyi Cheng

A four piece golf ball includes several relationships among the values of the densities of its layers. Namely, the sum of the density of the inner core and the outer core is at least 2 g/cm, the sum of the density of the inner cover layer and the outer cover layer is at least 2.2 g/cm, and the difference between these two sums is at least 0.1 g/cm. The inner core is made of a highly neutralized acid polymer, the outer core is made of a polybutadiene rubber, and the inner and outer cover layers are made of a non-ionomeric thermoplastic material, such as thermoplastic polyurethane. The layers may have certain relationships among their hardness values. Finally, the golf ball exhibits certain physical properties, such as a certain moment of inertia.

Golf ball having relationships among the densities of various layers

The present disclosure provides to a kit for customizing and recycling golf balls, and related methods. The kit includes one or more sets of golf ball covers, may include one or more sets of golf ball cores, and may further include a golf ball cover removal device and a golf ball cover application device. A golfer may select a golf ball cover from a set based on a desired play characteristic. For example, the golfer may select a relatively hard cover from a set of golf ball covers having different hardness values. The golfer may then apply the selected golf ball cover to a golf ball core using the golf ball cover application device. The core may be selected from a set of cores in the kit, or the core may be obtained from a recycled golf ball using a golf ball cover removal device.

Kit and method for customization of golf balls

Growing community of inventors

Chiayi, Taiwan

Che-Ching Lin