Abstract: A golf swing training device for improving the swing of a golfer. The device includes a base block with a plurality of elongate guide rods extending therefrom whose tips demarcate the proper path of a head of a golf club when swinging the golf club at the golf ball. A spaced apart pair of generally rectangular stabilizing legs are outwardly extended from the distal face of the base block. The stabilizing legs each are positioned adjacent the bottom side of the base block such that the lower portions of the stabilizing legs and the bottom side of the base block are coplanar with one another.

Abstract: A golf practice aid which uses a pressure-sensitive double-sided tape for removably attaching the aid to the club face of prior art club without noticeably changing the characteristics of the club. The practice aid preferably includes a metal base, which at its center has a circular ball striking platform which is raised from the base by means of a beveled edge and, at each end thereof, a raised, linear, triangular, alignment rail. When properly stroked with the club, the ball hits on the circular striking platform thereby causing the golf ball to go in a straight line in the direction of the target. When the golf ball is improperly stroked it strikes on the beveled edge surface and is turned away from the target.

Abstract: A golf club head apparatus includes a ball-striker face portion and a main body portion underlying the ball-striker face portion. The ball-striker face portion is in a form of an automobile rear view mirror. The main body portion includes a top body surface and a bottom body surface, and the main body portion includes a pair of air foil surfaces. A handle is connected to the main body portion. The handle enters the main body portion through the top body surface which can be a simulated trunk lid. The handle is closer to a first air foil surface than to a second air foil surface in the pair of air foil surfaces. With the handle present, a complete golf club, such as a putter, is provided. Generally, the main body portion has a configuration which simulates a rear portion of an automobile. Alternatively, the main body portion has a configuration which simulates a front portion of an automobile. The pair of air foil surfaces are simulated automobile tail fin surfaces.

Abstract: A golf ball is composed of at least a pair of adjacent concentric solid layers or three adjacent concentric solid layers. In the former case, the outer solid layer is composed of a matrix and non-metallic high-hardness grains having hardness higher than that of the matrix which has a Shore D range of 36-40. In the later case, the intermediate solid layer is composed of a matrix and high-hardness grains having hardness higher than that of the matrix. The high-hardness grains have a Shore D hardness in the range of 50-70 and penetrate the corresponding solid layer in normal directions. The golf ball can provide a player with different feels on impact depending on the direction of an external force applied thereto when the golf ball is hit.

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: A golf ball has a coating layer formed by dispersion coating at the surface portion thereof. For example, a two-piece golf ball is produced by enclosing a solid core with a cover material; forming, by dispersion coating, a white coating layer made of a thermoplastic resin on the surface of the cover material; conducting mark stamping on the coating layer; forming, by dispersion coating, a transparent coating layer made of a thermosetting resin as an outermost layer; and then conducting dimple processing. The coatings have thicknesses in the range of 15-250 .mu.m. Even when the coating layer at a surface portion is formed relatively thick, the coating layer allows the dimples to be precisely shaped and sharp edged and can be given sufficient durability and functions to improve travel properties, spin properties, and feel on impact.

Abstract: A golf ball has a plurality of dimples in its spherical outer surface and its spherical outer surface is divided into the faces of an icosahedron consisting of 20 regular spherical triangles, and the golf ball's spherical outer surface is further divided by great circle paths which obtained by extending spherical straight lines connecting the midpoint of each side of the sperical triangles of icosahedron to its opposite apex, then large spherical pentagons will be created on the polar regions of the golf ball's spherical outer surface. The center of large pentagon as a pole, which is a common apex of 5 regular spherical triangles of the spherical icosahedron, from the pole, spherical straight lines extend along the both sides of each of the 5 spherical triangles to the equator. (Same thing happens on the opposite pole.) The spherical outer surface is further divided by the spherical straight lines into small sections to arrange the dimples.

Abstract: A multi piece solid golf ball comprising:a core (1),at least one intermediate layer (2) formed on the core (1) anda cover (3) covering the intermediate layer (2) consists essentially of (I) 100 to 10% by weight of a polyurthane thermoplastic elastomer and (ii) o to 90% by weight of an ionomer of ethylene-(meth) acrylic acid copolymer and having a flexural modiolus of 500 to 5,000 Kgf/cm.sup.2, and the cover (3) is formed from an ionomer resin of ethylene-(meth)acrylic copolymer and has a shore D hardness of 50 to 75 and the core (1) has a press deformation of 3.0 to 6.0 mm, the press deformation being obtained by applying an initial load of 10 Kg on the core to measure a deformation of core (Xmm) and then applying a final load of 130 Kg on the core to measure a deformation of core (Ymm), followed by calculating (Y-X)mm, which is the press deformation.

Abstract: A golf swing training system is provided including a light source such as a laser light that generates a light beam from the grip end of a golf club and a mat having disposed thereon graphics depicting a preferred light beam path. Upon swinging the golf club such that the light beam projects upon the mat following the light beam path golfers are taught how to swing the club along a preferred swing plane.

Abstract: Sports equipment "user's grip" enhancing device, especially functional for golf. A portable training device that is molded, cut or formed into a barrel shape that is slipped on the grip of the golf club and modifies the user's grip on the club itself. This device becomes the resting point for the thumb and index finger of the right hand for right handed golfers and the left hand for left-handers. Repositioning the thumb and index finger reduces the amount of unneeded control that these two fingers exert on the club. Traditionally for many golfers, these two fingers dominate the entire grip and trigger the major muscle groups of that side of the body to contribute unneeded, excessive participation throughout the entire golf swing. Thus, these two fingers attempt to total control the speed of the club and aperture of the club face during the swing and the resulting direction of the flight of the ball once struck.

Abstract: A golf swing training aid which has a base bar to align and position a user's feet in the proper position. A pair of bars are slidably attached to the base bar which allows the user to position the ball properly between his/her feet, to position his/her feet the proper distance apart on every swing, and a vertically telescoping assembly allows the golfer to position the golf ball the proper distance away from the user's body. The pair of bars and the vertically telescoping assembly have indicia thereon viewable through apertures in the base bar so the user will know exactly where to position his/her feet and the ball as well as aligning the clubface properly to the intended target.

Abstract: A golf swing training system that includes an arm securing mechanism for assisting a golfer to maintain the upper arm and elbow tucked against the chest during golf swing practice. The arm securing mechanism includes hook and pile fastener areas that allow for easy attachment of the upper arm and/or elbow areas of the user's arm to a natural location on the user's chest. The golf swing training system includes a chest strap assembly and an arm strap assembly that are securable together to restrict movement of the user's arm during practice golf swings.

Abstract: A golf training aid for teaching an individual correct ball positioning when in a golfer's stance. The inventive device includes a pliable U-shaped member dimensioned for securement to a heel of a golfer's shoe. An aiming rod extends from the U-shaped member.

Abstract: A golf ball having a plurality of dimples on its spherical surface molded by a mold which has a spherical cavity therein and is composed of a pair of mold sections being removably mated along with a parting surface at the position corresponding to an equator line of the spherical cavity of the mold, wherein at least one dimple lies across the equator line of the ball, such that a center of the dimple is displaced from the equator line, and the dimple is formed by a pin disposed at the parting surface of the mold sections such that a center axis passing the axial center of the pin is positioned below or above the parting line.

Abstract: The present invention is directed towards a low-spin multi-layer golf ball which comprises a soft core, a cover layer and a mantle layer disposed between the core and cover layer, wherein the mantle layer has a shore D hardness of greater than 60 and a specific gravity of greater than about 1.2. The invention is also directed towards a golf ball comprising a core, cover layer, and a mantle layer, in which the core has a sufficient amount of calcium oxide to reduce core compression by at least about 2 compression points compared to a core consisting of the same mixture wherein zinc oxide is substituted in place of the calcium oxide.

Abstract: A golf training and exercising device for exercising various muscles used in a golf swing, including an elongated elastic member having a loop type mounting means on one end and a flexible, soft grip attached to the opposite end.

Abstract: An adjustable golf swing training apparatus is disclosed, the apparatus comprising a support structure for supporting the golf swing training apparatus in a support plane, and a telescopic swing training arm connected to the support structure and further connectable to a golf club shaft. The telescopic swing training arm is magnetically biased toward a predetermined length, whereby the swing training arm is urged toward the predetermined length in response to axial movement thereof in either first or second directions away from the predetermined length. The predetermined length is such as to accommodate a preferred path of travel for a golf club through a portion of a golf swing.

Abstract: A horizontal tube 1 having a mark 6 for the left foot position, and having a sequence of preferably three marks 3-5 for the right foot position for three ranges of club numbers. A shaft 10 is inserted transversely through the tube via one of three horizontal transverse holes 7-9 corresponding to the ranges of clubs indicated for the right foot. The shaft is tapered from end to end, and stops in a transverse hole at a position depending on the diameter of the hole. This position is designed such that the shaft extends forward a distance appropriate for ball placement for the given range of clubs. For adjustment, the user need only move the shaft to one of three holes. This configures the device for both the lateral and longitudinal placement of the feet relative to the ball, with minimal distraction and concentration.

Abstract: The present invention provides a hollow golf ball having a spherical cavity in the center, which exhibits excellent durability and less impact strength to result in excellent shot feel without degrading flight performance, and the production of the same. The hollow golf ball includes: (a) hollow center formed from a material selected from the group consisting of rubber, thermoplastic resin and a mixture thereof, the hollow center having a hollow portion with a diameter of 5 to 30 mm; (b) at least one core rubber layer, formed on said hollow center, the core rubber layer being obtained by vulcanizing a rubber composition which comprises a base rubber, a metal salt of an unsaturated carboxylic acid, an organic peroxide and filler; and (c) a cover formed on said core rubber layer.

Abstract: A golf practice apparatus comprises a plurality of slope control cylinders which are hinged on corresponding cylinder supports adjacent to a central portion of a base frame with one end of each of the slope control cylinders and are swivelly connected on a lower surface of each corner of the platform with another end of each of the slope control cylinders, and a swiveller provided at the other end of the slope control cylinder; the swiveller comprising a bracket mounted on the lower surface of the platform, a barrel type drum rotatably assembled with a bracket by a through pin, and an eye end formed at the other end of the slope control cylinders and as a bearing encompassing said barrel surface of the drum.