Multipiece solid golf ball
First Claim
1. A multipiece solid golf ball comprising;
 a solid core and a cover consisting of inner and outer layers surrounding the core, the outer cover layer having a surface formed with a plurality of dimples,said solid core having a distortion of 2.8 to 6.5 mm under an applied load of 100 kg, and a product of the Shore D hardnesses of said inner cover layer multiplied by the Shore D hardness of said outer cover layer and a proportion V_{R }(%) of the total of the volumes of dimple spaces each defined below a plane circumscribed by the dimple edge to the overall volume of a phantom sphere given on the assumption that the golf ball surface is free of dimples satisfy any one of the following combinations (1) to (5);
(1) the product of Shore D hardnesses of inner and outer cover layers;
1,500 to less than 2,000 V_{R};
0.8 to 0.93% (2) the product of Shore D hardnesses of inner and outer cover layers;
2,000 to less than 2,500 V_{R};
0.75 to 1.05% (3) the product of Shore D hardnesses of inner and outer cover layers;
t2,500 to less than 3,000 V_{R};
0.7 to 1% (4) the product of Shore D hardnesses of inner and outer cover layers;
3,000 to less than 3,500 V_{R};
0.65 to 0.95% (5) the product of Shore D hardnesses of inner and outer cover layers;
3.500 to 4,000 V_{R};
0.6 to 0.9%, and said dimples include at least three types of dimples which are different in at least one of, diameter, depth, and value V_{0 }which is the volume of one dimple space defined below a plane circumscribed by the dimple edge divided by the volume of a cylinder whose bottom is the plane and whose height is the maximum depth of the dimple from the bottom; and
wherein both the hardness of the inner and outer cover layers are up to 63 in Shore D hardness.
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Accused Products
Abstract
A multipiece solid golf ball comprises a solid core and a cover of two inner and outer layers surrounding the core. The outer cover layer has a surface formed with a plurality of dimples is characterized in that a product of the Shore D hardnesses of the inner cover layer multiplied by the Shore D hardnesses of the outer cover layer and a proportion V_{R }(%) of the total of the volumes of dimple spaces each defined below a plane circumscribed by the dimple edge to the overall volume of a phantom sphere given on the assumption that the golf ball surface is free of dimples satisfy any one of the following combinations (1) to (5):
(1) 1,500 to less than 2,000
V_{R}: 0.8 .to 1.1%
(2) 2,000 to less than 2,500
V_{R}: 0.75 to 1.05%
(3) 2,500 to less than 3,000
V_{R}: 0.7 to 1%
(4) 3,000 to less than 3,500
V_{R}: 0.65 to 0.95%
(5) 3,500 to 4,000
V_{R}: 0.6 to 0.9%. The dimples include at least three types of dimples which are different in at least one of a diameter, a depth, and a value V_{0 }which is the volume of one dimple space defined below a plane circumscribed by the dimple edge divided by the volume of a cylinder whose bottom is the plane and whose height is the maximum depth of the dimple from the bottom.
10 Citations
14 Claims

1. A multipiece solid golf ball comprising;
 a solid core and a cover consisting of inner and outer layers surrounding the core, the outer cover layer having a surface formed with a plurality of dimples,
said solid core having a distortion of 2.8 to 6.5 mm under an applied load of 100 kg, and a product of the Shore D hardnesses of said inner cover layer multiplied by the Shore D hardness of said outer cover layer and a proportion V_{R }(%) of the total of the volumes of dimple spaces each defined below a plane circumscribed by the dimple edge to the overall volume of a phantom sphere given on the assumption that the golf ball surface is free of dimples satisfy any one of the following combinations (1) to (5);
(1) the product of Shore D hardnesses of inner and outer cover layers;
1,500 to less than 2,000V_{R};
0.8 to 0.93%(2) the product of Shore D hardnesses of inner and outer cover layers;
2,000 to less than 2,500V_{R};
0.75 to 1.05%(3) the product of Shore D hardnesses of inner and outer cover layers;
t2,500 to less than 3,000V_{R};
0.7 to 1%(4) the product of Shore D hardnesses of inner and outer cover layers;
3,000 to less than 3,500V_{R};
0.65 to 0.95%(5) the product of Shore D hardnesses of inner and outer cover layers;
3.500 to 4,000V_{R};
0.6 to 0.9%,and said dimples include at least three types of dimples which are different in at least one of, diameter, depth, and value V_{0 }which is the volume of one dimple space defined below a plane circumscribed by the dimple edge divided by the volume of a cylinder whose bottom is the plane and whose height is the maximum depth of the dimple from the bottom; and
wherein both the hardness of the inner and outer cover layers are up to 63 in Shore D hardness.
 a solid core and a cover consisting of inner and outer layers surrounding the core, the outer cover layer having a surface formed with a plurality of dimples,

2. A multipiece solid golf ball comprising;
 a solid core and a cover consisting of inner and outer layers surrounding the core, the outer cover layer having a surface formed with a plurality of dimples,
said solid core having a distortion of 2.8 to 3.0 mm under an applied load of 100 kg, and a product of the Shore D hardnesses of said inner cover layer multiplied by the Shoe D hardness of said outer cover layer and a proportion V_{R }(%) of the total of the volumes of dimple space each defined below a plane circumscribed by the dimple edge to the overall volume of a phantom sphere given on the assumption that the golf ball surface is free of dimples satisfy any one of the following combinations (1) to (5);
(1) the product of Shore D hardnesses of inner and outer cover layers;
1,500 to less than 2,000V_{R};
0.8 to 1.1%(2) the product of Shore D hardnesses of inner and outer cover layers;
2,000 to less than 2,500V_{R};
0.75 to 1.05%(3) the product of Shore D hardnesses of inner and outer cover layers;
2,500 to less than 3,000V_{R};
0.7 to 1%(4) the product of Shore D hardnesses of inner and outer cover layers;
3,000 to less than 3,500V_{R};
0.65 to 0.95%(5) the product of Shore D hardnesses of inner and outer cover layers;
3,500 to 4,000V_{R};
0.6 to 0.9%,and said dimples include at least three types of dimples which are different in at least one of, diameter, depth, and value V_{0 }which is the volume of one dimple space defined below a plane circumscribed by the dimple edge divided by the volume of a cylinder whose bottom is the plane and whose height is the maximum depth of the dimple from the bottom.  View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
 a solid core and a cover consisting of inner and outer layers surrounding the core, the outer cover layer having a surface formed with a plurality of dimples,
1 Specification