Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas with dimples such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules, the plural areas configured such that the golf ball exhibits a lift coefficient (CL) of less than about 0.230 over a range of Reynolds Number (Re) from about 120,000 to about 180,000 and at a spin rate of about 3,500 rpm.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least two groups of areas, a first group of areas containing a plurality of first dimples and a second group of areas containing a plurality of second dimples, the first and second groups of areas being arranged to form an Archimedean solid, the first and second groups of areas and dimple shapes and dimensions being configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules and such that the first and second groups of areas produce different aerodynamic effects, and the first dimples being of different dimensions from the second dimples.

Abstract: 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.

Abstract: The present invention relates to golf balls, specifically, to a golf ball with multifaceted depressions comprising two discrete geometries surrounded by a first perimeter. A second perimeter is circumscribed within the first and surrounds prismatoid depressions or protrusions. Primarily the first and second perimeters are circular and the depressions or protrusions are based on a polyhedral prismatoid having a minimum of three and a maximum of twelve edges, wherein the ratio of the first and second diameters is between 0.25 to 0.90.

Abstract: A kit comprising a golf ball having a lower trajectory than a conventional golf ball such as the ProV1 or TopFlight XL Straight golf balls and a golf club with a loft that is selected in order to increase and optimize the distance that the golf ball travels when hit. The ball may be conforming or non-conforming ball having a plurality of dimple areas designed to generate low lift, or a golf ball with higher drag, higher weight, or smaller size than a standard ball.

Abstract: A golf ball has uniform gaps between dimples even if the surface occupancy ratio of the dimples is high, and therefore the aerodynamic performance thereof is improved, whereby a longer flight distance can be obtained. In the golf ball having a plurality of dimples and land parts surrounded by the plurality of dimples, the land part has a shape having at least one vertex, the land part is connected to at least two adjacent land parts substantially by a point, and the area of the land part is in the range of about 0.05 mm2 to about 16.0 mm2.

Abstract: A golf ball mold having a non-planar parting surface formed by superimposing a base waveform with a least one shorter secondary waveform. The base waveform is defined by a series of concentric arcs wherein adjacent arcs are connected with a straight line segment that is tangent to the arcs and creates an acute angle. The length of the straight line segment being critical to the accuracy and predictability of the parting line.

Abstract: Golf balls include an exterior cover having a plurality of dimples arranged thereon, wherein from 5 to 95% of the dimples have a non-uniform dimple profile. At least a majority of the dimples having a non-uniform dimple profile on the golf ball body may be arranged in 2-24 repeating dimple clusters on the exterior surface of the ball. In some example structures, the exterior surface of the ball will include from 4-18 repeating dimple clusters, from 4-12 repeating dimple clusters, or even from 6-10 repeating dimple clusters.

Abstract: The invention provides a golf ball mold that includes a mold body configured as a plurality of mold parts which have at least a parting surface that defines a parting line at a golf ball equator and removably mate to form a cavity having an inner wall with a plurality of dimple-forming protrusions thereon, and a support pin which has an end face with a plurality of dimple-forming protrusions thereon and is extendable into and retractable from the cavity. The support pin extends into the cavity to support a center sphere and, when in a retracted state, the end face thereof defines a portion of the inner wall of the cavity. The end face of the support pin includes a pole of the cavity and has a peripheral edge which intersects a parallel of latitude at 10 degrees from the pole. Using the golf ball mold of the invention, good molded pieces which do not give rise to problems such as appearance defects and irregular flash can be easily and reliably obtained, helping to improve golf ball productivity.

Abstract: The present invention concerns a golf ball having dimple groupings comprised of multiple angular spiral shaped arms that are arrayed to form polygonal perimeters, wherein the number of arms equals the number of perimeter sides. This allows greater symmetry about the dimple grouping center, thereby improving the consistency of the aerodynamic performance of the ball. In another unique feature of the present invention, the angular shape of the arms facilitates the formation of polygonal shaped dimple groupings, which can fit closely together to cover a greater proportion of the ball's surface, preferably more than about 85% surface coverage, thereby further enhancing aerodynamic performance.

Abstract: The present invention provides a method for arranging dimples on a golf ball surface in which the dimples are arranged in a pattern derived from at least one irregular domain generated from a regular or non-regular polyhedron, and particularly a dipyramid. The method includes choosing control points of a polyhedron, generating an irregular domain based on those control points, packing the irregular domain with dimples, and tessellating the irregular domain to cover the surface of the golf ball. The control points include the center of a polyhedral face, a vertex of the polyhedron, a midpoint or other point on an edge of the polyhedron and others. The method ensures that the symmetry of the underlying polyhedron is preserved while minimizing or eliminating great circles due to parting lines.

Abstract: The present invention provides a method for arranging dimples on a golf ball surface in which the dimples are arranged in a pattern derived from at least one irregular domain generated from a regular or non-regular polyhedron. The method includes choosing control points of a polyhedron, generating an irregular domain based on those control points, packing the irregular domain with dimples, and tessellating the irregular domain to cover the surface of the golf ball. The control points include the center of a polyhedral face, a vertex of the polyhedron, a midpoint or other point on an edge of the polyhedron and others. The method ensures that the symmetry of the underlying polyhedron is preserved while minimizing or eliminating great circles due to parting lines.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, the first dimples comprising spherical dimples having a first, spherical chord depth and the second dimples comprising truncated spherical dimples having a second, truncated chord depth, and the second dimples are of larger radius than the first dimples and have a truncated chord depth which is less than the spherical chord depth of the first dimples.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas, a first group of areas containing a plurality of first dimples and a second group of areas containing a plurality of second dimples, each area of the second group abutting one or more areas of the first group, the first and second groups of areas and dimple shapes and dimensions being configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules, and such that the golf ball exhibits a lift coefficient (CL) of less than about 0.300 over a range of Reynolds Number (Re) from about 60,000 to about 230,000 and for a range of dimensionless spin parameter from about 0.10 to about 0.40.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, the first dimples comprising truncated spherical dimples having a first, truncated chord depth and the second dimples comprising spherical dimples having a second, spherical chord depth, the first dimples are of larger radius than the second dimples and have a truncated chord depth which is less than the spherical chord depth of the first dimples, and the total surface area of all first areas being less than the total surface area of all second areas.

Abstract: A golf ball includes an outer land surface and a plurality of dimples formed thereon. The dimples comprise protrusions on the inner surface of the dimple to energize or agitate the airflow over the dimpled surfaces to increase the aerodynamic performance of the golf ball. These protrusions include rotational elements arranged in various configurations and are fully contained within the dimple perimeter and do not extend beyond a chordal plane of the dimple. By improving the aerodynamic of the airflow over the dimpled surface of the golf ball, the outer land surface of the golf ball may remain robust to prevent premature wear and tear on the golf ball.

Abstract: A golf ball 2 has, on a surface thereof, a rugged pattern consisting of a land 10 and a large number of dimples 8. A method for designing the rugged pattern includes the steps of: (1) randomly arranging a large number of generating points on the surface of a phantom sphere; (2) assuming a large number of Voronoi regions on the surface of the phantom sphere based on the generating points; and (3) assigning a land to the vicinity of the contour of each Voronoi region and assigning a dimple to a portion of the surface of the phantom sphere other than the land.

Abstract: A golf ball 2 has, on a surface thereof, a plurality of types of dimples 8 having different diameters from each other. A standard deviation ye of the volumes of all the dimples 8 is equal to or less than 0.095 mm3. The ratio (V?/D?) of the standard deviation V? to a standard deviation D? of the diameters of all the dimples 8 is equal to or less than 0.35. Preferably, the shape of each dimple 8 is a portion of a spherical surface. The standard deviation V? is preferably equal to or less than 0.087 mm3. The ratio (V?/D?) is preferably equal to or less than 0.29.

Abstract: A method of making a golf ball having a secondary surface texture created on the fret areas by the dimple making procedure. The secondary surface is created on a hob prior to the primary dimple pattern being formed therein, and which largely obliterates the secondary surface texture except for the fret areas and the outer inside surface of the perimeter of the dimples where the depth of the dimple is less than the depth of the secondary surface texture.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least two groups of areas, a first group of areas containing a plurality of first dimples and a second group of areas containing a plurality of second dimples, the areas in the first group being triangular and the areas in the second group being square, the first and second groups of areas being arranged to form a cuboctahedron shape, the first and second groups of areas and dimple shapes and dimensions being configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules and such that the first and second groups of areas produce different aerodynamic effects, and the first dimples being of different dimensions from the second dimples.

Abstract: A golf ball provided with elliptical dimples. A golf ball provided with non-circular dimples, configured by forming the dimples in the surface of a sphere or of a pseudosphere which consists of a polyhedron. The dimples have a non-circular shape which has a major axis having a length at least 1.2 times greater than that of the minor axis of the shape, are each composed of a pair of circular arcs, and have a depth which causes the peripheral edges of the dimples to generate turbulence. The configuration reduces the separation width at the separation boundary to a level less than that of a golf ball having circular dimples, and this decreases the drag. The polyhedron can be substantially composed of triangles, pentagons, or hexagons.

Abstract: The invention provides a golf ball having, on a surface thereof, a plurality of circular dimples, a plurality of non-circular dimples, and a land area which is a non-dimple region composed of a plurality of arcuate first lands, each formed along an edge of one of the circular dimples, and a plurality of second lands, each arranged so as to bridge between two neighboring circular dimples and having a shape that is recessed at a center portion thereof. The non-circular dimples have an edge shape defined by a plurality of the first lands in combination with a plurality of the second lands. In this golf ball, by fashioning the lands on the ball surface into a unique shape, the surface area of the lands is minimized and the dimple surface coverage is made even larger, increasing the aerodynamic performance and thus enabling the ball to travel even farther.

Abstract: The present invention relates to golf balls, specifically, to a golf ball with multifaceted depressions comprising two discrete geometries surrounded by a first perimeter. A second perimeter is circumscribed within the first and surrounds prismatoid depressions or protrusions. Primarily the first and second perimeters are circular and the depressions or protrusions are based on a polyhedral prismatoid having a minimum of three and a maximum of twelve edges, wherein the ratio of the first and second diameters is between 0.25 to 0.90.

Abstract: A golf ball 2 has a large number of craters 8. A rugged pattern is formed on the golf ball 2 by the craters 8. A process for designing the rugged pattern includes the steps of: assuming a plurality of states; assuming a large number of cells on a spherical surface; assigning any one of the plurality of states to each cell; assigning, as an attribute, any one of INSIDE, OUTSIDE and BOUNDARY to the each cell based on the state of the each cell and states of a plurality of cells located adjacent to the each cell; assuming craters based on the attributes of the large number of cells; and updating the attribute of the each cell so as to enlarge the areas of the craters, based on the attribute of said each cell and the attributes of the plurality of cells located adjacent to the each cell.

Abstract: Disclosed herein is a golf ball which has not only an air resistance similar to or smaller than that of a dimpled golf ball, but also a significantly reduced area ratio of grooves relative to the total surface area of the golf ball, thereby achieving an enhanced carry distance and high accuracy in the directionality of putting. The golf ball has net-shaped grooves formed on an outer surface of a sphere.

Abstract: A method for manufacturing a golf ball includes the step of designing plural dimples on a surface of the golf ball so as to satisfy the following parameters. A total number N of the dimples is approximately 400 or less; a surface roughness Rda of the golf ball is approximately 0.085 mm or less; and a value obtained by dividing an average convex part surface area Srt in the first cross-section and the second cross-section by an average concave part cross-section Sru in the first cross-section and the second cross-section is approximately 0.9 or less. The golf ball surface roughness Rda is the average value of a first golf ball cross-section surface roughness Rp, a second golf ball cross-section surface roughness Rm, and a third golf ball cross-section surface roughness Rs.

Abstract: A golf ball has a cover and a core which is made as a single piece or of two or more parts (for example an inner core covered by an outer core or mantle layer). The ball has non-spherical aspects in at least some parts and may also have different specific gravities in different parts of the ball. The different shaped ball parts combined with the different specific gravities of the materials for different ball parts results in a differential between the moments of inertia of the different spin axes. The golf ball is spherical, but the inner layers are not necessarily completely spherical or symmetrical layers or parts.

Abstract: A golf ball includes an outer spherical surface and a plurality of dimples formed thereon. In accordance to one aspect of the invention, the dimples in accordance to the invention have a polygonal perimeter and a substantially spherical, concave depression. The substantially spherical depression comprises a spherical depression and a transitional portion bridging the area between the polygonal perimeter and the spherical depression. In accordance to another aspect of the invention, one or more sides of the polygonal perimeter may be non-linear or curved. The dimples of the present invention may fill the ball's entire outer surface, or the dimples may occupy a predetermined pattern on the ball. The predetermined pattern may also include one or more channels or raised beads on the surface of the ball.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas, a first group of areas containing a plurality of first dimples and a second group of areas containing a plurality of second dimples, each area of the second group abutting one or more areas of the first group, the first and second groups of areas and dimple shapes and dimensions being configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules, the plural areas configured such that the golf ball has a Drag Coefficient (CD) and a Lift Coefficient (CL) of less than about 0.330 and 0.270, respectively, at a Reynolds Number (Re) of about 80,000 and a spin rate of between about 2,900 rpm and about 3,000 rpm and a CD and CL of less than about 0.260 and 0.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, wherein the first dimples are spherical dimples and the second dimples are truncated spherical dimples, the first dimples having a first radius and a first, spherical chord depth, and the second dimples having a second radius larger than the first radius and having a second, truncated chord depth less than half the spherical chord depth of the first dimples.

Abstract: A golf ball formed from a single piece of material, the ball having an outer surface and a plurality of dimples formed on the outer surface, the outer surface being divided into plural areas, a first group of areas containing a plurality of first dimples and a second group of areas containing a plurality of second dimples, each area of the second group abutting one or more areas of the first group, the first and second groups of areas and dimple shapes and dimensions being configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules and such that the first and second groups of areas produce different aerodynamic effects, the first dimples being of different dimensions from the second dimples.

Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas, a first group of areas containing a plurality of first dimples and a second group of areas containing a plurality of second dimples, each area of the second group abutting one or more areas of the first group, the first and second groups of areas and dimple shapes and dimensions being configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules, and such that the golf ball exhibits a lift coefficient (CL) of less than about 0.250 over a range of Reynolds Number (Re) from about 120,000 to about 180,000 and at a spin rate of about 3,500 rpm.

Abstract: The invention provides a golf ball having a core formed by vulcanizing a rubber composition and a cover composed primarily of a polyurethane material. The rubber composition of the core includes 100 parts by weight of a base rubber, from 10 to 40 parts by weight of an unsaturated carboxylic acid or a metal salt thereof, a peroxyketal (a) and a monophenol-type antioxidant (b), the weight ratio (a)/(b) of the peroxyketal to the monophenol-type antioxidant being from 5 to 50. The ball has an excellent discoloration resistance and an outstanding distance and feel on shots taken with a middle iron.

Abstract: Golf balls include: (a) a golf ball body having a first set of construction specifications and a first dimple pattern formed on an outer surface of the golf ball body; and (b) a coating applied to the outer surface of the golf ball body to thereby produce a coated golf ball body having an exterior surface. At least one of the outer surface of the golf ball body and the coating includes a plurality of surface roughening particles to provide increased micro surface roughness as compared to golf balls having the same set of construction specifications and the same dimple pattern but without the micro surface roughening particles. The micro surface roughening affects the aerodynamic properties of the ball.

Abstract: The present invention is a golf ball which comprises dimples having a cross section defined by the superposition of two or more continuous and differentiable functions. Additionally, the dimples preferably have a circular boundary and maintain an axis coincident with the center of the circular boundary.

Abstract: A golf ball 2 has, on a surface thereof, a plurality of types of dimples 8 having different diameters from each other. The standard deviation of the curvature radii of cross sections of all the dimples 8 is 0.90 mm or less. The average of the curvature radii of the cross sections of all the dimples 8 is greater than 40% but 50% or less of the diameter of the golf ball 2. The sum of the volumes of all the dimples 8 is 280 mm3 or greater but 350 mm3 or less. The average of the diameters of all the dimples 8 is 3.9 mm or greater but 4.5 mm or less. The ratio of the sum of the areas of all the dimples 8 to the surface area of a phantom sphere of the golf ball 2 is 75% or greater but 95% or less.

Abstract: Generally disclosed is a golf ball having a core and a cover layer. The cover layer includes areas that are hard corresponding to the dimples, and areas that are soft corresponding to the land between the dimples. The cover layer may comprise two different materials, such as polyurethane and ionomer, that are laterally adjacent to each other in the cover layer. Alternatively, the cover layer may be selectively coated with a coating material having a different hardness, such as polyurethane or ionomer. As a result of the arrangement of the hard dimples and the soft land, the golf ball achieves reduced spin, and greater distances, when struck with a larger force (such as during a dive) while also achieving increased spin, and better control, when struck with a smaller force (such as during a chip).

Abstract: A golf ball 2 has, on a surface thereof, a plurality of types of dimples 10 having different diameters from each other. The standard deviation of the curvature radii of cross sections of all the dimples 10 is 0.90 mm or less. The average of the curvature radii of the cross sections of all the dimples 10 is 20% or greater but 40% or less of the diameter of the golf ball. The sum of the volumes of all the dimples is 300 mm3 or greater but 370 mm3 or less. The average of the diameters of all the dimples is 3.5 mm or greater but 4.5 mm or less. The ratio of the sum of the areas of all the dimples to the surface area of a phantom sphere of the golf ball is 75% or greater but 95% or less.

Abstract: A multi-piece solid golf ball has a core, at least one intermediate layer encasing the core, and a cover of at least one layer encasing the intermediate layer. The core is formed of a base rubber, and the intermediate layer and cover are each formed of a resin material. The intermediate layer has a thickness (a) and the cover has a thickness (b) such that the ratio a/b is from 0.7 to 1.9, and the core has a diameter (c) such that the ratio c/a with the intermediate layer thickness (a) is from 23 to 38. The intermediate layer has a material hardness (Shore D) of from 42 to 76, and the cover has a material hardness (Shore D) of from 41 to 69. The ball satisfies the following relationship: cover material hardness<intermediate layer material hardness>core surface hardness, and wherein a Shore D hardness at the core surface minus a Shore D hardness at the core center is not more than 17 units. This golf ball has an improved flight performance and a good, solid feel on impact.

Abstract: A non-conforming golf ball has a plurality of dimples formed on the outer surface of the ball in a predetermined dimple pattern, the outer surface comprising one or more first areas which include a plurality of first dimples which together have a first dimple volume and at least one second area having a dimple volume less that the first dimple volume, the first and second areas being configured to establish a preferred spin axis. The second area may be a band around the equator which has a lower dimple volume or no dimples, with the polar regions have a higher volume of dimples, creating a preferred spin axis through the poles.

Abstract: A golf ball having an improved surface pattern is disclosed. The golf ball has one or more bands on its surface. These bands may be either channels or raised beads. The bands have variable widths and/or heights/depths, either within the same band or between bands. These bands may decrease drag, or may increase lift. These bands may be linear, or may be curved, and may or may not fully circumscribe the golf ball. These channels or ridges may also be combined with traditional or non-traditional dimples.

Abstract: A golf ball having an improved surface pattern is disclosed. The golf ball has one or more channels or ridges on its surface. These ridges or channels may decrease drag, or may increase lift, and may increase or decrease flight symmetry. These channels or ridges may be linear, or may be curved, and may or may not fully circumscribe the golf ball. These channels or ridges may also be combined with traditional or non-traditional dimples.

Abstract: The present invention concerns a golf ball with dimples having a cross-sectional profile comprising a conical base shape and a spherical cap with a prescribed point of tangency to the cone sidewall. More particularly, the conical profiles of the present invention are defined by three independent parameters: dimple diameter (DD), edge angle (?EDGE), and saucer ratio (Sr) which is a measure of the relative curvature of the dimple bottom. These parameters fully define the dimple shape and allow for greater flexibility in constructing a dimple profile versus conventional spherical dimples. Further, conical dimples provide a unique dimple cross-section which is visually distinct.

Abstract: Golf balls may include a first pole, a second pole, and a seam located between the first and second poles. Dimples are formed on a surface of the ball in a pattern that includes a plurality of repeating sectors around each pole of the ball. The sectors on one ball half are rotationally offset across the seam line from the sectors on the other ball half. Additionally, each individual sector includes a line of symmetry over which the dimple pattern on one half of the sector is mirrored on the other half. A variety of different dimple types also may be arranged on a golf ball surface, e.g., within the sectors described above. Additional aspects of this invention relate to the features of various layers of a multi-piece golf ball and to methods of making golf balls having at least some of the features mentioned above.

Abstract: Golf balls may include a first pole, a second pole, and a seam located between the first and second poles. Dimples are formed on a surface of the ball in a pattern that includes a plurality of repeating sectors around each pole of the ball. The sectors on one ball half are rotationally offset across the seam line from the sectors on the other ball half Additionally, each individual sector includes a line of symmetry over which the dimple pattern on one half of the sector is mirrored on the other half. A variety of different dimple types also may be arranged on a golf ball surface, e.g., within the sectors described above. Additional aspects of this invention relate to the features of various layers of a multi-piece golf ball and to methods of making golf balls having at least some of the features mentioned above.

Abstract: Golf balls may include a first pole, a second pole, and a seam located between the first and second poles. Dimples are formed on a surface of the ball in a pattern that includes a plurality of repeating sectors around each pole of the ball. The sectors on one ball half are rotationally offset across the seam line from the sectors on the other ball half. Additionally, each individual sector includes a line of symmetry over which the dimple pattern on one half of the sector is mirrored on the other half. A variety of different dimple types also may be arranged on a golf ball surface, e.g., within the sectors described above. Additional aspects of this invention relate to the features of various layers of a multi-piece golf ball and to methods of making golf balls having at least some of the features mentioned above.

Abstract: Golf balls may include a first pole, a second pole, and a seam located between the first and second poles. Dimples are formed on a surface of the ball in a pattern that includes a plurality of repeating sectors around each pole of the ball. The sectors on one ball half are rotationally offset across the seam line from the sectors on the other ball half. Additionally, each individual sector includes a line of symmetry over which the dimple pattern on one half of the sector is mirrored on the other half. A variety of different dimple types also may be arranged on a golf ball surface, e.g., within the sectors described above. Additional aspects of this invention relate to the features of various layers of a multi-piece golf ball and to methods of making golf balls having at least some of the features mentioned above.

Abstract: Golf balls may include a first pole, a second pole, and a seam located between the first and second poles. Dimples are formed on a surface of the ball in a pattern that includes a plurality of repeating sectors around each pole of the ball. The sectors on one ball half are rotationally offset across the seam line from the sectors on the other ball half. Additionally, each individual sector includes a line of symmetry over which the dimple pattern on one half of the sector is mirrored on the other half. A variety of different dimple types also may be arranged on a golf ball surface, e.g., within the sectors described above. Additional aspects of this invention relate to the features of various layers of a multi-piece golf ball and to methods of making golf balls having at least some of the features mentioned above.

Abstract: A golf ball having an improved surface pattern is disclosed. The golf ball has one or more channels on its surface. The channels form spherical polygonal tiles that may include a plurality of dimples. These dimples may be circular or polygonal in shape.

Abstract: A golf ball having multiple sets of identical hemispheres created by multiple non-planar parting lines symmetrically arranged. The hemispheres are identical relating to dimple volume, distribution and location. The highest amplitude of a parting line, when measured from an equator, is less than 11% of the largest dimple diameter.