Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorKae IIZUKA
Life of this patent
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Abstract
The present invention is a golf ball with a spherical core and a cover with one or more than two layers which covers the core, wherein the core includes two layers including an inner core having a spherical shape with an area formed in the center thereof, and an outer core covering the inner core, wherein value A is equal to or larger than 10.5 and value C is equal to or smaller than 3.7, wherein the value A is the deformation amount (mm) of the ball when the initial load is 98 N (10 kgf) and the ending load is 5880 N (600 kgf), and the value C is the deformation amount (mm) of the ball when the initial load is 98 N (10 kgf) and the ending load is 1275 N (130 kgf). The area is filled with at least one substance being different from the material of the inner core.
Claims9
A golf ball comprising:
- a spherical core;
- and
- a cover with one or more than two layers covering the core, wherein
- the core including two layers, one of which is an inner core being spherical and having an area in the center thereof, and the other of which is an outer core covering the inner core, the area being filled with at least one substance being different from a material of the inner core,
- value A is larger than or equal to 10.5,
- value C is smaller than or equal to 3.7,
- the value A is a deformation amount (mm) of the golf ball when an initial load is 98 N (10 kgf) and an ending load is 5880 N (600 kgf), and
- the value C is a deformation amount (mm) of the golf ball when an initial load is 98 N (10 kgf) and an ending load is 1275 N (130 kgf).
Dependencies are inferred from the claim text.