Golf balls having a dimple pattern arranged in an octahedral layout are disclosed. The dimple pattern has eight substantially identical dimple sections, where each dimple section is defined by a spherical triangle. The dimples in each of the eight dimple sections have at least three different dimple diameters including a minimum dimple diameter, a maximum dimple diameter, and at least one additional dimple diameter. The resulting dimple pattern has a surface coverage of about 70 percent or less. The reduced surface coverage helps to reduce the flight of the golf balls.

The present invention is directed to a golf ball having a non-planar parting line on its spherical surface. The non-planar parting line includes a plurality of arcuate segments, including at least one elliptical arc segment.

The present invention is directed to a golf ball having a non-planar parting line on its spherical surface.

Golf balls having dimple patterns arranged in dipyramid layouts are disclosed. The patterns may be arranged in triangular dipyramid, quadrilateral dipyramid, pentagonal dipyramid, or hexagonal dipyramid layouts. The dipyramid patterns have six, eight, ten, or twelve substantially identical dimple sections, where each dimple section is defined by a spherical triangle. The dimples in each of the identical dimple sections have at least two different dimple diameters including a minimum dimple diameter and a maximum dimple diameter. The resulting dimple patterns have a surface coverage of about 70 percent or less. The reduced surface coverage helps to reduce the flight of the golf balls.

Golf balls having core formulations including polybutadiene, butyl rubber, or a blend thereof, and low surface coverage dimple patterns are disclosed. The combination of low surface coverage with particular rubber formulations helps to reduce the flight of the ball while also providing improved aerodynamic consistency and maintaining the appearance of a high-performance trajectory.

Golf balls according to the present invention achieve flight symmetry and overall satisfactory flight performance due to a dimple surface volume ratio that is equivalent between opposing hemispheres despite the use of different dimple geometries, different dimple arrangements, and/or different dimple counts on the opposing hemispheres.

A golf ball having a North pole and a South pole, an equator and a primary meridian, the equator and primary meridian divide the ball into North, South, East and West hemispheres, and Northeast, Northwest, Southeast and Southwest quadrants. A grid pattern projected on the ball surface divides the ball laterally and longitudinally into a number of overlapping zones. The dimples within the zones have average depths hex, hsx, hpx, hei, hsi and hpi and selected values of Δe, Δs and Δp which are the difference between the minimum and maximum values of the relative ratios of the dimple depths, hex.sub.r/hei.sub.r, hsx.sub.r/hsi.sub.r and hpx.sub.r/hpi.sub.r determined when the ball is rotated by a value of θ from 0 to 360° about its polar axis.

The present disclosure is generally directed to a dimple pattern for a golf ball. In one aspect, the present disclosure is directed to a specific arrangement of maximum and minimum diameter dimples. In more specific aspects, (i) the maximum diameter dimples are nearest neighbors with each other, (ii) the minimum diameter dimples are nearest neighbors with each other, (iii) the minimum and maximum diameter dimples are not nearest neighbors with each other, and (iv) the maximum diameter dimples only appear in one domain while the minimum diameter dimples only appear in the other domain.

Golf balls include dimples for generating a turbulent boundary layer. At least some of the dimples include a fan-shape. The fan-shaped dimple has a plurality of blades. Each blade has a trailing edge flush with a land area of a spherical surface of the golf ball, a leading edge, and a side wall connected to the leading edge. The dimple also has a sloped floor extending from the trailing edge to the leading edge, a blade tip connecting the leading edge to the trailing edge at a distal end of the blade, and a blade root connecting the leading edge to the trailing edge at a proximal end of the blade.

The present disclosure is generally directed to a dimple pattern for a golf ball. In one aspect, the present disclosure is directed to a specific arrangement of first and second domains each consisting of perimeter dimples and interior dimples. The dimples have at least three different dimple diameters, including a minimum dimple diameter, a maximum dimple diameter, and at least one additional dimple diameter. In a specific aspect, the dimples having the maximum dimple diameter are only present in the first domains, the dimples having the minimum dimple diameter are only present in the second domains, and none of the perimeter dimples in the first domain are maximum dimple diameters.