Golf ball
AssigneeSRI Sports Limited
InventorTakahiro Sajima
Life of this patent
Estimating the term…
Abstract
Golf ball 28 has a first side face 32, a second side face 34 and a third side face 36. The first side face 32 is positioned between an edge E and a point P. The second side face 34 is positioned between the point P and a point Q. The third side face 36 is positioned between the point Q and a point R. Each side face 32, 24, 36 is inclined in the in-depth direction toward the inward side. An angle α1 of the first side face 32 is 2.0° or greater and 11.0° or less. An angle α2 of the second side face 34 and an angle α3 of the third side face 36 are equal to or less than 30.0°. The angle α3 is greater than the angle α2. The angle α2 is greater than the angle α1. The golf ball 28 also has a curved face 38. The curved face 38 is a part of a spherical surface.
Claims9
A golf ball having numerous dimples on the surface thereof,
- said dimple comprising a truncated cone part having a side face inclined in the in-depth direction from the edge toward the inward side,
- an angle α1 of said side face with respect to the radial direction being 2.0° or greater and 10.0° or less, and
- wherein said dimple has a bowl-shaped part which is positioned at the center thereof.
A golf ball having numerous dimples on the surface thereof, said dimple comprising:
- (1) a first truncated cone part having a side face inclined in the in-depth direction from the edge toward the inward side;
- (2 ) a second truncated cone part having a side face inclined in the in-depth direction toward the inward side, and continuing to the first truncated cone part;
- and
- (3) a bowl-shaped part which is positioned at the center thereof,
- an angle α1 of said side face of the first truncated cone part with respect to the radial direction being 2.0° or greater and 11.0° or less, and
- wherein an angle α2 of said side face of the second truncated cone part with respect to the radial direction is greater than the angle α1, and the angle α2 is equal to or less than 30.0°.
A golf ball having numerous dimples on the surface thereof, said dimple comprising:
- (1) a first truncated cone part having a side face inclined in the in-depth direction from the edge toward the inward side;
- (2) a second truncated cone part having a side face inclined in the in-depth direction toward the inward side, and continuing to the first truncated cone part;
- (3) a third truncated cone part having a side face inclined in the in-depth direction toward the inward side, and continuing to the second truncated cone part;
- and
- (4) a bowl-shaped part which is positioned at the center thereof,
- an angle α1 of said side face of the first truncated cone part with respect to the radial direction being 2.0° or greater and 11.0° or less, and
- wherein an angle α2 of said side face of the second truncated cone part with respect to the radial direction is greater than the angle α1, and the angle α2 is equal to or less than 30.0°,
- an angle α3 of said side face of the third truncated cone part with respect to the radial direction is greater than the angle α2, and the angle α3 is equal to or less than 30.0°.
Dependencies are inferred from the claim text.