Golf ball having comma-shaped dimples
AssigneeVolvik Inc.
InventorsIn Hong Hwang, Kyung Ahn Moon
Life of this patent
Estimating the term…
Abstract
In a golf ball including dimples having coma shapes, the dimples are arranged such that one comma shaped dimple replaces a circular dimple, two or more comma shaped dimples of different sizes replace one circular dimple, comma shaped dimples having different shapes are arranged in a mixed type arrangement, circular dimples and comma shaped dimples are arranged in a mixed type arrangement, or a discontinuous annular dimple is added to the comma shaped dimples. Thus, a disadvantage of a large circular dimple may be removed and simultaneously a golf ball with stable flight capability and a long flight distance may be provided.
Claims8
A golf ball in which a surface of a sphere is divided into a spherical polyhedron and dimples are formed in each divided surface of the spherical polyhedron,
- wherein a plurality of circular unit cells are formed in each surface;
- each circular unit cell comprising at least two dimples having different sizes that are formed in each of the plurality of circular unit cells, each dimple having a comma shape, the comma shape comprises a circular head portion and a tail portion extending from the head portion and having a width that gradually decreases as the tail portion bends in one direction, and an outer contour of the comma shape, which comprises
- a first curved line formed of an arc coinciding with an outer contour of the circular unit cell;
- a second curved line extending from one end portion of two end portions of the first curved line with a radius of curvature ROC smaller than a ROC of the first curved line and forming an outer contour of the head portion;
- and
- a third curved line extending toward an end point of the comma shape to the other end portion of the second curved line and forming an outer contour of the tail portion with the first curved line,
- wherein, an inner land portion is between the at least two dimples, the inner land portion being lower than a sphere surface of the golf ball and higher than bottoms of the at least two dimples having comma shapes,
- wherein the end point of the comma shape of each dimple is proximate to a head portion of an adjacent dimple.
A golf ball in which a surface of a sphere is divided into a spherical polyhedron and dimples are formed in each divided surface of the spherical polyhedron, wherein a plurality of elliptical unit cells are formed in each surface;
- each elliptical unit cell comprising at least two dimples having different sizes that are formed in each of the plurality of elliptical unit cells, each dimple having a comma shape, the comma shape comprises a circular head portion and a tail portion extending from the head portion and having a width that gradually decreases as the tail portion bends in one direction, and an outer contour of the comma shape, which comprises
- a first curved line formed of an arc coinciding with an outer contour of the elliptical unit cell;
- a second curved line extending from one end portion of two end portions of the first curved line with a radius of curvature ROC smaller than a ROC of the first curved line and forming an outer contour of the head portion;
- and
- a third curved line extending toward an end point of the comma shape to the other end portion of the second curved line and forming an outer contour of the tail portion,
- wherein, an inner land portion is between at least two dimples, the inner land portion being lower than a sphere surface of the golf ball and higher than bottoms of the at least two dimples having comma shapes, wherein the end point of the comma shape of each dimple is proximate to a head portion of an adjacent dimple.
Dependencies are inferred from the claim text.