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: Golf balls including at least one modified dimple group are disclosed. The modified dimple group comprises one or more modified dimples forming an axially symmetric pattern about a Correction Area Centroid located on an axis of symmetry at a latitude greater than 0°, where 0° represents the hemispherical pole and 90° represents the equator. The modified dimples can be altered, for example, by changing dimple coverage, dimple diameter, dimple depth, dimple edge angle, dimple volume, dimple cross-sectional shape, and/or dimple plan shape. Optionally, the dimples have a catenary cross-sectional shape and the modified dimples are altered by changing the shape factor and/or chord depth. Such modifications preferably produce a golf ball that flies more consistently regardless of orientation when struck than a corresponding golf ball without such modifications.

Abstract: The present invention relates to golf balls, specifically to a golf ball comprising an aerodynamic pattern having novel shaped dimple structures which reduce the variation in airflow turning angle thereby improving the golf ball's flight performance. The dimple structures have a conical shaped base with a dimple in the center and reduced or no flat land areas between the dimples.

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: The present invention provides a golf ball wherein each hemisphere has a dimple pattern based on a pyramid having dissimilar sides. The resulting overall dimple pattern is not based on preexisting polyhedral, and is not attainable using conventional dimple packing methods.

Abstract: A golf ball 2 has a large number of dimples 8 on a surface thereof. A trajectory of the golf ball 2 is divided into first to fourth segments. An average CD1 of drag coefficients CD and an average CL1 of lift coefficients CL in the first segment are equal to or less than 0.225 and 0.180, respectively. An average CD2 of drag coefficients CD and an average CL2 of lift coefficients CL in the second segment are equal to or less than 0.250 and 0.220, respectively. An average CD3 of drag coefficients CD and an average CL3 of lift coefficients CL in the third segment are equal to or greater than 0.260 and 0.220, respectively. An average CD4 of drag coefficients CD and an average CL4 of lift coefficients CL in the fourth segment are equal to or greater than 0.250 and 0.200, respectively.

Abstract: Disclosed are manufacturing of a golf ball. A golf ball has a plurality of circular dimples in its spherical outer surface, dividing into the faces of a spherical polyhedron by a plurality of division lines, wherein border lines are formed at the position of ±1˜2 latitudinal degrees to the division lines, the circular dimples are arranged by using the border lines as an occupation limit line of the circular dimples positioned opposite to the division lines, and the golf ball has no dimple on the pole in the center of the spherical polyhedron is provided, thereby increasing the performance such as a carry distance by raising the proper amount of area ratio of dimples, obtaining the uniformity thickness cover molding without the inferior product due to the balanced gates with uniform size.

Abstract: Non-circular dimples such as oval form dimples are provided on the spherical surface of a ball body. A golf ball includes a spherical land surface of the ball body and a dimple pattern of a plurality of dimples formed on the spherical land surface, the spherical surface of the ball body being divided into a plurality of spherical surface parts (land surfaces) with each polygon faces of polyhedron which is virtually inscribed in said spherical surface of ball body, by a projection method from each polygon faces of the inscribed polyhedron, on each spherical surface parts some or all of the dimples being formed as non-circular dimple having a width of more than 1.5 mm and a length of more than 2 times of the width and the dimple pattern is disposed so as to make vortices generated in the non-circular dimples flow out in at least two different directions.

Abstract: The present invention provides a method for arranging dimples on a golf ball surface that significantly improves aerodynamic symmetry and minimizes parting line visibility by arranging the dimples in a pattern derived from at least one irregular domain generated from a regular or non-regular polyhedron. One or more irregular domains may have an initial dimple sub-pattern of nearest neighbor dimples wherein the dimple sub-pattern is packed in one or more irregular domains; and the unfilled regions of the irregular domains are packed with dimples and the irregular domains are tessellated around the golf ball surface.

Abstract: The present invention is directed to a golf ball comprising of non-concentric arcs defining a non-planar parting line on its spherical surface resulting in having a large size disparity between dimples in one hemisphere and adjacent dimples from the opposing hemisphere. The parting line is produced by a pair of adjacent dimples, wherein D indicates dimples and N indicates dimples from the Northern hemisphere and those from the Southern hemisphere are indicated by S. A large disparity may be created, if the following condition is satisfied: D ? ( N ) D ? ( S ) > 1.25 ? ? or ? ? D ? ( N ) D ? ( S ) < 0.80 .

Abstract: A golf ball has a plurality of dimples, wherein: (1) the dimples have a peripheral edge with a radius of curvature R from 0.5 mm to 2.5 mm; (2) the surface coverage SR of the dimples, expressed as a percentage of the surface area of a hypothetical sphere representing the ball if it had no dimples, is from 60% to 74%; and (3) the ratio ER of a collective number of dimples RA having a radius of curvature R to diameter D ratio (R/D) of at least 20%, divided by a total number of dimples N on the surface of the ball, is from 15% to 95%. This combination of features enables damage to the paint film on the surface of the ball to be minimized, improves the durability of markings on the surface of the ball, and prevents a decline in ball performance.

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 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.

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. 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, 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 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: A golf ball that is formed by a mold developed from a computerized modeling system such as CAD or CAE in combination with a CNC machine tool which superimposes a short waveform, or multiple waveforms, onto a longer base waveform to create a non-planar parting line that is functionally dependent on the underlying dimple geometry. The non-planar parting line is comprised of a plurality of peaks and valleys that are offset from the dimple perimeters, as not to bisect any dimple edge. Also, dimples on one side of the parting line interdigitate with dimples on the other side to form a more uniform distribution of dimples over the entire golf ball surface. Still further, the non-planar parting line has a amplitude which is less than 0.02 inch from an axis substantially coincident with the equator of the ball and the length of the parting line is less than 110 percent of the length of a curve defined by the circumference of the equator.

Abstract: A golf ball is provided with a dimple pattern comprising two substantially identical elongated dimple pattern elements which fit together to form the complete dimple pattern. The dimple pattern can contain 344 dimples covering about 70.4% of the golf ball surface or 392 dimples covering about 73.3%, or other combinations of dimple count and coverage. The sizes of the dimples can be varied among either four distinct dimple sizes ranging from about 0.14 inches to about 0.17 inches or eight distinct dimple sizes ranging from about 0.11 inches to about 0.175 inches, or other dimple size combinations. The arrangement of dimples on the golf ball can be divided into a plurality of triangles having identical dimple arrangements with bilateral symmetry.

Abstract: A golf ball includes, on a surface thereof, a first dimple (1) having a diameter of 4.50 mm, a second dimple (2) having a diameter of 4.00 mm, a third dimple (3) having a diameter of 3.60 mm, a fourth dimple (4) having a diameter of 2.80 mm and a fifth dimple (5) having a diameter of 2.30 mm. A region surrounded by a circle (C) in a phantom spherical surface is a crown portion and other region are non-crown portion. The total area of the crown portions and that of the on-crown portion are equal to each other. The difference between a dimple occupation ratio Yc (%) in the crown portions and a dimple occupation ratio Yn (%) in the non-crown portion is 5% to 30%.

Abstract: By three great circle-shaped compacting lines (L) formed by projecting the sides of an inscribed regular octahedron, a surface of a golf ball is compared into eight spherical regular triangles (T1) to (T8). A dimple (1) is arranged over the surface of the golf ball, and furthermore, there is no great circle path to be a great circle which does not intersect the dimple (1). Any of the three compacting lines (L) is not coincident with an equator line (E). The equator line (E) is coincident with a great circle obtained by connecting middle points of sides of the spherical regular triangles (T1) to (T8). Any dimple (1) intersecting the equator line (E) does not centrally intersect the equator line (E).

Abstract: A two piece golf ball has a core compression in the range of 77 PGA to 87 PGA, a core diameter in the range of about 1.532 inches to 1.548 inches, a cover hardness in the range of 66 to 72 Shore D, and a dimple pattern based on the geometry of a truncated octahedron. A ball having such characteristics exhibits superior distance performance without compromising shot-making feel.

Abstract: A golf ball comprising a substantially spherical outer surface and a plurality of polygonal dimples formed thereon is provided. The dimples are arranged such that the sides of adjacent dimples are substantially parallel to each other, and wherein the outer surface comprises first spacings and second spacings between adjacent dimples. The first spacings and the second spacings have substantially constant width between any two adjacent dimples and the width of the first spacings is different than the width of the second spacings. The plurality of polygonal dimples is arranged in a plurality of identifiable sections and the first spacings comprise inter-dimple spacings between dimples within one identifiable section and the second spacings comprise inter-sectional spacings between identifiable sections of dimples.

Abstract: A resin composition comprising, in admixture, (A) a specific thermoplastic resin component, (B) at least one wax component selected from among (b-1) a fatty acid having 20-80 carbon atoms and/or a derivative thereof and (b-2) an oxidized natural wax and/or derivative having a neutralization value of 60-190 mg KOH/g, and optionally, (C) a basic inorganic metal compound capable of neutralizing acid groups in the thermoplastic resin component (A) and/or the wax component (B) is improved in flow, moldability and heat resistance and thus suitable to form a layer of a golf ball which exhibits improved rebound and distance properties.

Abstract: Disclosed is a golf ball including: a plurality of dimples arranged overall on the spherical surface of the golf ball by assuming the spherical surface of the golf ball as a spherical octahedron and using, as dimple arrangement units, eight spherical triangles constituting the spherical octahedron, on each of which a specific number of the dimples are arranged. In this golf ball, at least the four dimples are arranged on each of three sides of the spherical triangle; there is no great circle with which none of the dimples intersects; and the total number of the dimples is in a range of 380 to 450.

Abstract: A surface is comparted into eight spherical regular triangles (T1 to T8) through twelve comparting lines formed by projecting twelve sides of a regular octahedron inscribed on the surface onto the surface. A dimple is arranged for each spherical regular triangle. In each of six apexes (P1 to P6), dimple patterns of four spherical regular triangles sharing the apexes are not identical to each other. Moreover, the dimple patterns of the two spherical regular triangles sharing each of the apexes and opposed to each other are neither line symmetrical nor point symmetrical with each other. In each of the twelve comparting lines, furthermore, the dimple patterns of two spherical regular triangles sharing the comparting line are neither line symmetrical nor point symmetrical. In such a golf ball, it is possible to prevent dimple effects from being reduced when one of comparting great circles (L1, L2 and L3) is coincident with the highest speed portion.

Abstract: A surface is comparted into eight spherical regular triangles (T1 to T8) through twelve comparting lines formed by projecting, onto the surface, twelve sides of a regular octahedron inscribed on the surface. Dimples are arranged in the spherical regular triangles (T1 to T8) so as not to intersect any of the comparting lines. Consequently, three great circle paths (L1), (L2) and (L3) are formed. Each of four spherical regular triangles sharing each of six apexes (P1 to P6) has different dimple pattern from those of three other spherical regular triangles, respectively. In the golf ball, it is possible to prevent dimple effects from being reduced when one of the three great circle paths (L1), (L2) and (L3) is coincident with the highest speed portion.

Abstract: Golf balls are disclosed having novel dimple patterns determined by a pentagonal hexecontahedron. A method of packing dimples according to a pentagonal hexecontahedron is also disclosed. For each disclosed dimple pattern, a pentagonal hexecontahedron extend from a pole of the golf ball and dimples are positioned on the golf ball surface according to a pentagonal hexecontahedron.

Abstract: An ionomer resin component containing (a) a ternary ionomer resin and optionally (b) a binary ionomer resin, optionally blended with (c) a non-neutralized olefin-unsaturated carboxylic acid random copolymer, is blended with (d) a metal soap of a fatty acid neutralized with a Ca, Mg or Zn cation in a weight ratio from 95:5 to 80:20. A golf ball cover composition based on this mixture has a melt index of 1-10 dg/sec. The cover composition is drastically improved in moldability, resilience and paint coating adhesion. A golf ball having a cover made of the composition is improved in feel and flight performance.

Abstract: A golf ball has plural types of dimples on a spherical surface, which is assumed to be a regular icosahedron having twenty triangles. Apexes of five triangles join together at a vertex. Those dimples arranged in each triangle constitute an arrangement unit. A first dimple having a smallest diameter is located at the vertex, and second dimples having a greater diameter are equidistantly arranged around the first dimple. When a pentagon which circumscribes the second dimples is drawn, an average depth of those dimples located within the pentagon is up to 85% of the average depth of those dimples located in the remaining areas.

Abstract: A spherical ball and a method of making the spherical ball wherein the ball has a plurality of elongated dimples substantially covering the outer surface of the ball without any dimple overlap. The elongated dimples are of at least two types including a first plurality of dimples having a minor axis and a major axis which together form the long axis of the first plurality of dimples. The minor axis being less than the major axis. A second plurality of dimples has a minor axis equal to that of the first plurality of dimples and a major axis less than the major axis of the first plurality of dimples but greater than the minor axis.

Abstract: A golf ball is molded in a mold comprising a pair of removably joined mold sections. The golf ball has a plurality of dimples, the dimples being arranged in a polyhedral arrangement. The golf ball is free of a great circle which does not intersect with the dimples. The dimples (D2) lying across the parting line (P) between the mold sections, except for the dimples (D1) whose center lies on the parting line, are shifted upward or downward from the parting line or reduced in diameter so that these dimples are located outside the parting line (P). The dimple surface coverage is at least 71%. A golf ball having high symmetry and excellent flight performance can be prepared using a simple mold.

Abstract: A putter blade is attached to a pneumatic cylinder mounted in a putter head. Also attached to the head are a sealed hollow shaft (serving as a compressed gas reservoir) and a cleated foot. Mounted on the shaft are a pressure gauge, a pressure relief valve, a compressed air fill valve, a pneumatic switch, a hand grip, and pneumatic tubing and fittings connecting the shaft/reservoir, switch, and cylinder. Also attached to the shaft (removable) is a bicycle pump, used to fill the reservoir. After pressurizing the shaft/reservoir, pressing the pneumatic switch will stroke a golf ball without requiring the operator to swing the putter.

Abstract: A golf ball having an outside surface with a plurality of dimples formed thereon that form at least four spherical-triangular regions. Each of the regions has a first set of dimples formed in a large triangle and a second set of dimples formed in a small triangle inside of and adjacent to the large triangle. The diameters of the first set of dimples vary such that at least one diameter of the first set of dimples is equal to or greater than adjacent dimples nearer to the dimples on the points of the large triangle, and the dimples cover more than 80% of the outer surface with diameters of 0.11 inches or greater. The total number of dimples on the golf ball is about 300 to 500.

Abstract: In a golf ball having a parting line formed at the junction between a pair of mold sections and a plurality of dimples some of which lie across the parting line and being free of a great circle which does not intersect with the dimples, the crossing dimples lying across the parting line have a greater edge angle than those dimples of the same diameter as the crossing dimples disposed near the poles. The ball is improved in symmetry in that the flight distance is substantially equal between seam hitting and pole hitting.

Abstract: In a golf ball having a multiplicity of dimples of the same type arranged thereon and an equator, 6-12 dimples are arranged along the equator at an equal spacing and centered at the equator. The remaining dimples are arranged such that a great circle which does not intersect the dimples does not exist. A space where a dimple of the same size as the dimples can be formed is not left between the dimples. Due to a uniform arrangement of dimples including equator-centered ones, the golf ball is symmetrical enough to provide an increased carry and consistent flight independent of impact points.

Abstract: In a solid golf ball comprising a solid core and a cover and having a weight of 41-44.5 grams, the cover has a Shore D hardness of 40-53 degrees. The relationship between core hardness and cover hardness is optimized for shots at low head speeds of less than 40 m/sec.

Abstract: A golf ball having an octahedral pattern about its surface with four identical quadrants in each hemisphere. Each quadrant includes a circular area which fills the quadrant as completely as possible without crossing the quadrant boundaries. A dimple is located at each pole. Each circular area is substantially filled with dimples and the remaining interstitial areas between the circular areas and the poles are substantially filled with dimples while leaving a dimple free equatorial line.

Abstract: The present invention refers to an arrangement of dimples on a golf ball which has a plurality of dimples on its spherical surface, The arrangement of dimples is made by dividing sphere's surface of a golf ball by great circles to form an octahedron, making the center of a spherical triangle in the said octahedron as a pole, and dividing again the said sphere's surface by great circles to form a new octahedron at the position turning on the said pole as a center in an angle of 60 degrees, and dividing again the said sphere's surface by great circles made by extending the lines connecting the adjacent midpoints of the sides of spherical triangle with a pole to one another, and dividing again the said sphere's surface by great circles made by extending the lines connecting the adjacent midpoints of the sides of spherical triangle at the position turning on the said pole as a center in an angle of 60 degrees to one another, and arranging dimples in the spherical polygons formed in dividing the said sphere's surf

Abstract: The invention relates to a golfball having a plurality of dimples in its outer spherical surface The dimples have various sizes and depths and are configured in a pattern that is based upon dividing the golfball's surface into a spherical octahedron having eight octahedral triangles and a spherical hexaoctahedron having eight hexaoctahedral triangles and six hexaoctahedral quadrangles. The two poles of the golfball are located within centers of oppositely facing octahedral triangles ("pole triangles"). The remaining six octahedral triangles ("equator triangles") are intersected by the golfball's equator through the two of their three midpoints that are not in contact with the pole triangles.Six dimples of equal size (having equivalent diameters) are placed in a circle around the centers of each of the eight octahedral triangles.