Wound golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsShinichi Kakiuchi, Junji Umezawa
Life of this patent
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Abstract
In a wound golf ball comprising a wound core (3) having thread rubber wound on a center (1) to form a thread rubber layer (2) thereon and a cover (4) around the wound core, the thread rubber layer (2) consists of an inner lamina (2a) of lightly wound thread rubber, an intermediate lamina (2b) of tightly wound read rubber, and an outer lamina (2c) of lightly wound thread rubber. The inner lamina occupies 10-35% of the tread rubber volume, the intermediate lamina 35-70% of the tread rubber volume and the outer lamina is 45% of the tread rubber volume. The inner and outer lamina have an elongation which is at least 40% lower than the elongation of the intermediate lamina.
Claims13
A wound golf ball comprising;
- a wound core having thread rubber wound on a center to form a thread rubber layer thereon and a cover around the wound core,
- said thread rubber layer consists essentially of three laminas, an inner lamina of lightly wound thread rubber, an intermediate lamina of tightly wound read rubber, and an outer lamina of lightly wound thread rubber, wherein said inner lamina, said intermediate lamina, and said outer lamina occupy 10 to 35%, 35 to 70%, and 15 to 45% by volume of the entire volume of the thread rubber layer, respectively, and said inner lamina and said outer lamina have an elongation which is at least 40% lower than the elongation of said intermediate lamina.
Dependencies are inferred from the claim text.