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: A three-piece wound golf ball having improved characteristics of moment of inertia, initial spin and total flight distance with minimal dispersion, the ball comprising:a solid center core portion which is substantially spherical, is composed mainly of polybutadiene having a core diameter of 1.35-1.50 inches (34.3-38.1 mm), a specific gravity of 1.23-1.24; and a Shore D durometer hardness of 55-75 and a compression of 59-75 on an Atti compression tester;an intermediate thread-wound portion wound with an elastomeric thread material upon the core portion to a diameter of 1.540-1.600 inches (39.1-40.6 mm), the thread having an elongation of 800-1000%, a tensile strength of 4000-5000 psi, and a rectangular cross-section configuration of 0.0625 (+/-0.002) inch .times.0.024(+/-0.

Abstract: A golf ball is provided which changes color or other indicia after significant immersion in water to indicate that the ball has been recovered from a water hazard and may not have predictable flight characteristics which may result in loss of carry and roll. In one embodiment, a microencapsulated dye layer is formed immediately below the final gloss coat, with controlled dye release causing a stained look to the ball after significant immersion in water.

Abstract: A finished, regulation long range, solid construction, multi-piece golf ball including a discrete cover and a core. The core has an inner and an outer portion. Either the outer portion or the entire core has a plurality of gas containing compressible cells dispersed therein, and either the outer portion or the entire core the a specific gravity greater than 1.The compressible cells are produce by a method selected from the group consisting of foaming, using a blowing agent, injecting a gas and incorporating a plurality of microspheres having a flexible outer surface.

Abstract: A wound golf ball comprising a center, a thread rubber layer and a cover has a weight of 40-45 grams and a distortion of 2.6-3.6 mm under a load of 100 kg. The center has an outer diameter of 30-35 mm and a distortion of 1.6-4 mm under a load of 30 kg. The cover has a Shore D hardness Hd of 50-68 and a gage of 1.2-2.2 mm. A percent overall dimple volume Vr which is defined as the sum of the volumes of dimple spaces each below a circular plane circumscribed by the dimple edge divided by the volume of the ball satisfies: (0.985-0.002 Hd).ltoreq.Vr.ltoreq.(1.085-0.002 Hd). The ball launches at a greater launch angle and initial velocity upon driver full shots at low head speed, traveling a longer distance.

Abstract: A golf ball is prepared by forming a cover of two layer structure consisting of an inner layer and a thin outer layer on a core by heat compression molding. A color difference .DELTA.E in Lab color space between the inner and outer layers is up to 3. Tracks of seams and streaks on the inner layer at the parting line are visually unperceivable, and the ball is good looking.

Abstract: The current invention is a non-restrictive wrist break feedback apparatus for producing feedback concerning wrist joint position. The invention is useful in monitoring wrist motion for any sport but particularly useful for monitoring the "breaking" motion of the wrist during the play of golf. The device provides feedback in the form of an audible signal when the position of the hand in relation to the position of the forearm deviates from a desirable range, in respect to the forearm. The wrist break feedback apparatus of the current invention includes a frame with a first member, that generally aligns with the back of the hand, and a second member, that is pivotally connected to the first member. Feedback is produced when the first member deviates from the second member by more than a predetermined amount in a transverse direction relative to the forearm due to dorsiflexion.

Abstract: A golf putter leveling system including a shoe level adapted for securement to a golf shoe. A putter level is provided that is adapted for securement to a shaft of a golf putter. The putter level includes a base portion having a lower arcuate recess and an upper arcuate recess. The lower arcuate recess has a pair of detents disposed on opposing sides thereof. The lower arcuate recess snapidly engages the shaft of the golf putter. The upper arcuate recess has a level portion disposed therein. A putter leveler is adapted for securement to the shaft of the golf putter. The putter leveler has an upper portion defined by an arcuate recess for engaging the shaft of the golf putter. The putter leveler has a lower portion defined by outwardly extending legs for supporting the golf putter at an even level so as to zero the putter level.

Abstract: A solid golf ball having a good shot feel and controllability as well as an excellent flight performance and durability which comprises a core and a cover covering the core, wherein the cover has a two layer structure composed of an outer cover and an inner cover, wherein the inner cover is prepared from a resin composition having a flexural modulus of 5,000 to 12,000 Kgf/cm.sup.2 and comprising a polyamide resin having a flexural modulus of 6,000 to 30,000 Kgf/cm.sup.2 with a thermoplastic elastomer having a JIS/A hardness of 30 to 98, in a weight ratio of polyamide: thermoplastic elastomer within the range of 95:5 to 50:50.

Abstract: A three-piece solid golf ball of the three-layer structure comprising a solid core, an intermediate layer, and a cover is provided. When hardness is expressed by JIS-C scale hardness, the core surface hardness is higher than the core center hardness by 8-20 degrees, the intermediate layer hardness is higher than the core surface hardness, and the cover hardness is higher than the intermediate layer hardness. The ball has a weight of 41-44.5 grams. The golf ball exhibits consistent performance independent of head speeds.

Abstract: The present invention refers to a golf ball having projections in a form of dome, in a form of cut sphere, in a form of polyhedron, in a form of spherical polyhedron, in a form of which the base is in polygon and the sides are round and plane like the side of cut cone, in a form of which the base is in circle and the sides are round and plane like the side of cut cone or with a small dome put on each of cut top. The surface of the said inner cover can be made of projections of one kind on the whole or projections of a different kind. Meanwhile, it is possible to make the projections of one kind or more than two kinds that are different in a size or height. The said projections also may be apart from each other at regular intervals or may be in contact with each other, and in some cases, some projections may be in contact and some projections apart from each other.

Abstract: A golf ball comprising a solid core, and a cover enclosing the core and having a multiplicity of dimples formed therein has a diameter of 42.70.+-.0.05 mm and a specific gravity of 1.05.+-.0.05. The cover is composed mainly of an ionomer resin and has a Shore D hardness of at least 60, and the dimples satisfy the condition of 0.80.ltoreq.V.sub.R .ltoreq.1.16 wherein V.sub.R is a percent overall dimple volume given by the formula: ##EQU1## wherein Vs is a sum of the volumes of the dimple spaces each below a circular plane circumscribed by the dimple edge and R is a radius of the ball. The ball has a weight of 40.5 grams to less than 44.5 grams, and a cover thickness of 1.4 to 2.4 mm. The core undergoes a distortion of 2.4 to 4.3 mm under a load of 100 kg. Those golf players with a slow head speed can enjoy the advantages of the ball including an increased flying distance and a pleasant hitting feel.

Abstract: A non-wound golf ball, comprising a central core, a cover having a thickness of at least about 30 mils and comprising a member selected from the group consisting of ionomers, acrylic acid, methacrylic acid and polyethylene surrounding the core, and a moisture barrier surrounding the core and being located between the cover and the core. The moisture barrier has a lower water vapor transmission rate than the cover and an average thickness substantially less than the cover thickness. The moisture barrier has a water vapor transmission rate which is sufficiently low to reduce the loss of coefficient of restitution of the golf ball by at least 5% if the ball is stored at 100.degree. F. and 70% relative humidity for six weeks as compared to the loss in coefficient of restitution of a golf ball which does not include the moisture barrier, has the same type of core and cover, and is stored under substantially identical conditions.

Abstract: A tiltable platform suitable for a golf practice stand provides a rigid stable platform and is easily tiltable in all directions. The platform has a first guide track and a second guide track arranged in a cruciform configuration thereunder with a centre intersection. A base is provided under the platform and supports a first frame member under the first guide track and a second frame member under the second guide track with opposite sloped linkage arms. First and second linear actuators tilt the platform in two planes representing the first guide track and the second guide track by pivoting the linkage arms and an operating control for the actuators permits adjustment of the slope of the platform.

Abstract: A golf ball comprising:a core comprising a diene polymer having a Riehle compression of at least 0.075; anda cover having a Shore D hardness of at least 65, wherein the cover is comprised of at least one high acid ionomer resin comprising a copolymer of greater than 16% by weight of an alpha, beta-unsaturated carboxylic acid, and an alpha olefin of which about 10 to about 90% of the carboxyl groups of the copolymer are neutralized with a metal cation. The golf ball has a diameter of 1.700-1.800 inches. The thickness of the cover is in the range of 0.08 to 0.13 inches.

Abstract: A golf aid for use by a golfer to improve ball addressing and shot aligning techniques. The aid is generally comprised of an elongated cord having opposite first and second ends, a pin and a ring fixedly secured to the first and second ends, respectively, and a back foot position indicator embodied in the form of a cord engaging clamp mounted for slidable movement along the length of the cord. In use, a golfer would first analyze a shot to determine the best direction for the ball to travel. Following the shot analysis, the golfer would then take the pin attached to the cord's first end and insert it into the ground adjacent the rear of the golf ball. The cord could then be pulled taut and positioned on the ground in a line approximating the line in which it is desired for the ball to travel. The cord engaging clamp may then be adjusted to the position along the length of the cord that will be laterally aligned with the appropriate position for the back foot.

Abstract: Disclosed is a solid golf ball having good shot feel and controllability as well as excellent flight performance and durability. The golf ball comprises a core and a cover covering the core, wherein the core has a diameter of not more than 36.7 mm, a hardness (JIS-C hardness) of 50 to 80 and the cover has a thickness of 3 to 5 mm and a hardness (Shore-D scale hardness) of 50 to 60.

Abstract: A golf club head (H) having a head body (10) adapted to be secured to a club shaft (12) includes a first vertically oriented surface (14) that defines a ball striking face containing a sweet spot (16) thereon. A first sighting indicia (42) has a plurality of stepped surfaces (46) having an elongated longitudinal axis (52) extending parallel to the first vertically oriented surface (14). A second sighting indicia (44) has an elongated slender stripe (54) having a longitudinal axis (56) perpendicular to the elongated longitudinal axis (52) of the stepped surfaces (46) and intersecting the sweet spot (16). The first and second sighting indicia (42, 44) enable a user 58) of the club to visually align the sweet spot (16) of the first vertically oriented surface (14) relative to a golf ball (B) to be struck and a desired direction of travel 28) for the golfball (B).

Abstract: A wound golf ball is constructed by winding thread rubber on a center ball and enclosing with a cover. The center ball consists of a center core having a diameter of 20-37 mm and experiencing a distortion of 1-5 mm under a load of 100 kg and an enclosure layer having a Shore D hardness of 33-54 and has a diameter of 33-38 mm. The center core comprises a rubber composition comprising a base rubber, a co-crossing linking agent and a peroxide and being free of an oily substance. The cover consists of an inner layer having a Shore D hardness of 55-68 and an outer layer having a Shore D hardness of 30-58, the inner layer being harder than the outer layer by at least 5 in Shore D hardness. The ball is not only improved in spin, control, and flight distance on driver and approach shots, but also gives pleasant hitting feel with click.

Abstract: A new golf swing training device has a club with an elongated shaft with a hand grip at one end and a club head at the other end. A hinge is interposed between the first and second ends to allow the club head to break both rearwardly and forwardly. A spring biased projection cooperates with a recess so that different forces are required to break the club head in one direction, i.e., rearwardly, relative to a second force required to break the club in a second direction, i.e., forwardly. The tension of the hinge may also be adjusted. Access to the adjusting member is accessible from a location adjacent and non-aligned with the longitudinal axis of the club. In one embodiment, the hinge may be defined by a male/female assembly. In another embodiment, the hinge is defined by substantially identical side-by-side members.