A golf ball (20) approaching zero land area is disclosed herein with a plurality of indentations positioned on the lattices of a plurality of multi-faceted polygons. The golf ball (20) has an innersphere with a plurality of lattice members (40). Each of the plurality of lattice members (40) has an apex and the golf ball (20) of the present invention conforms with the 1.68 inches requirement for USGA-approved golf balls.

A golf ball includes: a land portion; and a plurality of dimples each provided to be recessed with respect to the land portion. Each of the dimples has a dimple edge and a dimple plane surrounded by the dimple edge. The dimples include a plurality of eccentric dimples each having a deepest portion that is not located on a line connecting a center point of the dimple plane of a corresponding one of the eccentric dimples and a center point of the golf ball. The eccentric dimples have respective dimple axes that are oriented randomly in the golf ball, and each of the dimple axes is obtained in a plan view of the corresponding one of the eccentric dimples by connecting the center point of the dimple plane and the deepest portion of the corresponding one of the eccentric dimples.

The present invention is directed to golf balls having improved aerodynamic performance due, at least in part, to the alteration of the dimple surfaces. In particular, the present invention relates to a golf ball that includes at least a portion of its dimples having circular perimeters and dimple profiles having a concentric groove or a non-concentric groove on the surface of the dimple. The golf ball dimples of the present invention provide golf ball surfaces having unique appearances, while maintaining ideal aerodynamic characteristics.

The present invention relates to golf balls, specifically, to a golf ball with multifaceted dimples comprising two discrete geometries including a circular perimeter and a depression or protrusion based on a polyhedral prismatoid.

Golf ball comprising dimple(s) incorporating three or more linear channels having the same channel length L and same channel width CW; all linear channels extend radially outward from a centroid of the dimple toward a perimeter of the dimple without intersecting the dimple's centroid. Each linear channel may extend radially outward from a location on the dimple that is a distance Cd from the dimple's centroid, wherein Cd>0. Alternatively, at least one of the three or more linear channels has a different channel length L and/or a different channel width CW than at least one other linear channel. Dimple may have circular or non-circular plan shape; channels may not intersect each other; at least one linear channel may intersect the dimple's perimeter; and linear channels may be spaced by n separation angles .sub.S, wherein n is number of linear channels, which may be equal, or at least two differ.

The present invention is a golf ball which comprises spherical-cosine dimples on the surface thereof. The spherical-cosine dimples have a cross-sectional shape defined by the superposition of a spherical function and a cosine function. Each of the spherical-cosine dimples preferably has a dimple diameter of 0.180 inches or greater.

A golf ball has a large number of exposed portions 22 on a surface thereof. An average value Hav of heights H of these exposed portions 22 is not less than 0.5 m and not greater than 50 m. The surface of the golf ball has one or more first zones and one or more second zones. An average value Hav1 of the heights H of the exposed portions 22 on these first zones is higher than an average value Hav2 of the heights H of the exposed portions 22 on these second zones. Preferably, the average value Hav1 and the average value Hav2 satisfy the following mathematical formula.

3(Hav1Hav2)50

The present invention is directed to golf balls having improved aerodynamic performance due, at least in part, to the alteration of the dimple surfaces. In particular, the present invention relates to a golf ball that includes at least a portion of its dimples having circular perimeters and dimple profiles having a concentric groove or a non-concentric groove on the surface of the dimple. The golf ball dimples of the present invention provide golf ball surfaces having unique appearances, while maintaining ideal aerodynamic characteristics.

A golf ball has a plurality of dimples on a surface thereof. Each dimple has a center portion and an edge portion. The center portion has a bowl shape. The edge portion has a ring shape and is smoothly continuous with the center portion. A cross-sectional shape of the edge portion is a curved line that is convex outward in a radial direction of the golf ball. A sum Vc of volumes of the center portions and a sum Vd of volumes of the dimples satisfy the following mathematical formula: (VdVc)/Vc2.15. A ratio of a number of the dimples, the center portion of each dimple having a circular contour and the edge portion of each dimple having a non-circular contour, to a total number of the dimples, is not less than 50%.

A golf ball 2 has a plurality of dimples 10 on a surface thereof. Each dimple 10 has a center portion 16 and an edge portion 18. The center portion 16 has a bowl shape. The edge portion 18 has a ring shape. The edge portion 18 is smoothly continuous with the center portion 16. A cross-sectional shape of the edge portion 18 is a curved line that is convex outward in a radial direction of the golf ball 2. A ratio P1 of a number N1 of the dimples each having an edge portion 18 that is adjacent to another edge portion 18 such that the edge portion 18 shares a boundary line with the other edge portion 18, to a total number N of the dimples, is not less than 50%.