Golf ball and method of manufacture
AssigneeBridgestone Sports Co., Ltd.
InventorAtsushi KOMATSU
Life of this patent
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Abstract
A golf ball is provided which suppresses twisting due to external forces while maintaining sufficient deflection at the time of impact, reduces the spin rate without lowering ball rebound, and is thus able to effectively increase the distance traveled by the ball, particularly on shots with a driver. In the golf ball, which includes a core and a cover, the core has a core body made of a first polybutadiene rubber and having a surface with a plurality of groves or holes thereon, which grooves or holes are filled with a second polybutadiene rubber of a differing composition from the first polybutadiene rubber. The polybutadiene rubber-filled groove portions or hole portions have a higher surface hardness than the core body.
Claims13
A golf ball comprising a core and a cover, wherein the core has a core body made of a first polybutadiene rubber and having a surface with a plurality of groves or holes thereon, which grooves or holes are filled with a second polybutadiene rubber of a differing composition from the first polybutadiene rubber, and wherein the polybutadiene rubber-filled groove portions or hole portions have a higher surface hardness than the core body.
Dependencies are inferred from the claim text.