Abstract: A system and method for improving a golfer's putt is provided. Included is a ball, putter, and ball marker, each of which bear directional indicia, such as arrows or triangles. The indicia of the various elements are aligned toward the hole, with the indicia of each element creating a desired directional path. The golfer uses the directional path created by the proper alignment of one or more elements to aim his or her putt. Furthermore, the directional indicia of the golf ball are designed to blend together when the ball is hit in the direction of the indicia, but create a swirl pattern when the ball is mis-hit for visualization of proper and improper putting.

Abstract: A golfing aid having a body that includes two partially spherical ends with the same radii as each other, whereby the contact points are positioned between 4 and 20 millimetres apart, and methods of producing and using such a golfing aid.

Abstract: Hit and Stick Golf Ball and Sleeve measures the golf swing accuracy of a golfer. The golf club head, driver or iron, is inserted into the sleeve. When the ball is hit during golf practice swing, the ball sticks to the sleeve at the point of impact. The ball position on the golf club head tells how good or bad the golf swing is. The ball can easily be pulled off by hand.

Abstract: A golf ball having direction-sighting indications, with which a golfer can easily sight a direction for the golf ball to fly when he/she strikes the ball with one of golf clubs, and a mold for manufacturing such golf balls. The golf ball according to the present invention has a first indicating line having a plurality of indicating holes distinguishable in shape and dimension from normal dimples formed on an outer surface of the golf ball. The first indicating line establishes a straight line extending along an equator on the surface of the golf ball to form a first direction indicating line, on which a starting point and an ending point are identical. A second indicating line, having a plurality of indicating holes identical in shape and dimension to those of the first indicating line, is formed on the surface of the golf ball.

Abstract: A golfing aid having a body that includes two partially spherical ends with the same radii as each other, whereby the contact points are positioned between 4 and 20 millimetres apart, and methods of producing and using such a golfing aid.

Abstract: An aid for teaching a user how to improve their stroke that is not limited to use with any particular game but is usable for any sport in which the user strikes an object toward a target. Wherein we provide a simple apparatus, including a ball and a striking member with each having attachment means thereon. Thus the ball when struck with the striking member automatically adheres thereon. Whereby, the ball upon impact compresses and retains memory of impact in a manner that suggests to the user the implied trajectory when visually examined.

Abstract: Non-standard sport projectiles, in accordance with this invention, include at least one linear through hole. As this non-standard sport projectile passes through the air, after being hit by, for example, a golf club, the non-standard sport projectile spins. When the above-mentioned through hole is generally aligned with the projectile's direction of flight, air passes through the through hole, and the aerodynamic characteristics of the non-standard sport projectile are enhanced. When the through hole is not aligned with the projectiles direction of flight the aerodynamic characteristics are reduced. As a result, the non-standard sport projectile experiences rapidly repeating intervals of relatively high aerodynamic flight and relatively low aerodynamic flight as the non-standard sport projectile spins around the center cross section of the through hole.

Abstract: An improved golf ball marker comprises a cap having a generally hemispherical hollow, the hollow having approximately the same dimensions as one half of a standard golf ball, the cap having first and second linear slits forming a “T” shaped slit configuration for marking a golf ball inserted in the hollow with a “T” mark comprising a seam indicator line and a club alignment line. The golf ball is positioned and oriented in the hollow of the cap such that the seam is aligned with the first linear slit for making the seam indicator line on the ball with a marker and the second linear slit is perpendicular to the seam for making the club alignment line on the ball.

Abstract: Alignment markings on a golf ball for 3 dimensional putting alignment comprise a first, second and third dimensional alignment markings. The first dimensional alignment marking facilitates a vertical alignment of player's eyes along the centerline of golf ball vertical to ground. The second dimensional alignment marking facilitates a horizontal alignment of the ball roll direction along a ball-to-target line. The third dimensional alignment marking facilitates a horizontal alignment of putter's striking face in a direction perpendicular to the ball-to-target line. The first dimensional alignment marking consists of a circumferential in a form of a circle. The second and third dimensional alignment markings consist of diagonal markings in a form of two diagonal lines, intersecting each other at right angle at the centerline of the first dimensional alignment marking.

Abstract: A golf ball having a surface with an alignment indicia which includes a longitudinal segment and a latitudinal segment is disclosed herein. Preferably, the longitudinal segment extends along a pole of the golf ball and has a length ranging from 1.00 inch to 1.5 inches.

Abstract: Any instructional information related to the act of playing the game of golf, provided on a golf ball, by any means, including, but not limited to: illustrations, images, and text, by any method, including, but not limited to printing and/or engraving.

Abstract: A system and method for improving a golfer's putt is provided. Included is a ball, putter, and ball marker, each of which bear directional indicia, such as arrows or triangles. The indicia of the various elements are aligned toward the hole, with the indicia of each element creating a desired directional path. The golfer uses the directional path created by the proper alignment of one or more elements to aim his or her putt. Furthermore, the directional indicia of the golf ball are designed to blend together when the ball is hit in the direction of the indicia, but create a swirl pattern when the ball is mis-hit for visualization of proper and improper putting.

Abstract: A golf ball having a surface with an alignment indicia which includes a longitudinal segment and a latitudinal segment is disclosed herein. Preferably, the longitudinal segment extends along a pole of the golf ball and has a length ranging from 1.00 inch to 1.5 inches.

Abstract: A large, resilient, hollow ball, of a size between that of a softball and a basketball, preferably a soccer ball or a volleyball, having a vent that allows restricted exit of air upon the ball being struck by a golf club and allows air to re-enter the hollow interior upon reflexing of the ball after being struck by a golf club. The ball may be combined with a target assembly that serves to return the ball to the striking position at which it has been struck.

Abstract: A golf ball and putter alignment combination is disclosed herein. The golf ball has a surface with alignment indicia which includes a longitudinal segment and a latitudinal segment. Preferably, the longitudinal segment extends along a pole of the golf ball and has a length ranging from 1.00 inch to 1.5 inches. The putter has an alignment indicia that is aligned with the alignment indicia of the golf ball to allow for a more accurate putt.

Abstract: A practice golf ball is produced by sewing up at least two pieces of preferably symmetrical surface cloth to form a ball shell defining a spherical space therein and evenly stuffing fibrous material into the spherical inner space via an opening left on a seam between the sewed-up surface cloths. The opening is then sewed up to seal the fibrous material in the ball shell. A thermosetting resin is injected into a geometrical center of the ball shell. When the resin is cooled and set, it binds the fibrous material at the geometrical center and forms a weighted core that provides a stable center of gravity for the completed practice golf ball.

Abstract: The present invention is to a projected laser beam in a method for aligning a golf ball prior to hitting it with a golf club and a method for determining the proper feet position of a golfer prior to that golfer's hitting the golf ball. The laser beam is used to project a linearly extending light path across the ball. The laser has suitable optical means to also project a second light beam parallel to the first linearly extending light path and horizontally displaced therefrom. Additionally, the laser assembly includes a third light path that intersects the first and second light paths. The golfer may position his/her feet on either side of the intersecting light path. The laser is manually manipulated so that the first path of light is aligned in the direction of the pin at the end of the fairway.

Abstract: An alignment aid for golfers consisting of a rigid hemispherically shaped body having two intersecting slits therein for making a mark on a golf ball which indicates the intended path of the golf ball and the preferred orientation of the club face for obtaining the intended path of the golf ball.

Abstract: A putt training device is provided which preferably includes a body having substantially the shape of a cylinder and a moment of inertia about its longitudinal axis substantially in the range of 79.31 to 84.21 grams-centimeters squared. The body also has first and second substantially flat ends and a substantially continuous outer surface extending between the first and second ends. The body is adapted to be positioned so that substantially the entire continuous length of the body abuttingly contacts a putting surface during rolling movement of the body on a putting surface to thereby provide a visual indication of which position the face of a golf putting club strikes after contact with the body.

Abstract: The present invention provides a putting training apparatus (10) which, when used repeatedly by a golfer, permits him to develop a consistent stroke and accurate putting shot. The putting training apparatus (10) includes a pair of balls (12), preferably regulation golf balls, with a pivotal assembly (16) disposed between the balls (12) which permits relative rotation between the balls (12). The pivotal assembly (16) is positioned along a common axis (24) which passes through the center of the balls (12). The pivotal assembly (16) includes a shaft (30) having opposing ends (43) and at least one bearing (32) proximate to each of the opposing ends (43). A retainer (43') is utilized on each of the ends of the shaft to retain the bearings thereupon.

Abstract: A device for assisting a golfer in improving his or her golf swing. The device includes an impact detector mounted to the club head of a golf club. The impact detector provides an instantaneous visual or audible indicator of when a predetermined area, e.g., the "sweet spot", of the club head face strikes the golf ball.

Abstract: A practice golf ball having a multiplicity of dimples formed in its surface has a weight of 46.5-49.0 grams and undergoes a distortion of 2.5-4.0 mm under a constant load of 100 kg. Those dimples having a diameter/depth (Dm/Dp) ratio between 10/1 and 15/1 occupy at least 80% of the total number of dimples. The ball offers a good feel upon shots, follows a low trajectory without substantial shortage of a flight distance, and is thus suited for use in urban golf practice pits of limited space.

Abstract: A practice golf ball having a multiplicity of dimples formed in its surface has a weight of 46.5-49.0 grams and undergoes a distortion of 2.5-4.0 mm under a constant load of 100 kg. A percent dimple volume Vr is in the range of 0.7%.ltoreq.Vr.ltoreq.1.1% wherein the percent dimple volume Vr is the sum of the volumes of the entire dimples divided by the volume of a phantom sphere given on the assumption that the ball surface is free of dimples. The ball offers a good feel upon shots, follows a low trajectory without substantial shortage of a flight distance, and is thus suited for use in urban golf practice pits of limited space.

Abstract: A pitching/throwing device comprising a first ball, a second ball, and connector for connecting the first and second balls to each other. In the preferred embodiment, the balls are standard baseballs and the connector comprises a dowel screw. During use, the student holds the device by either ball and grips the ball in the appropriate manner for the pitch being thrown. Then, depending on the pitch to be thrown, the student flips or throws the ball to another while trying to impart the appropriate rotation to the ball. Because of the changed center of gravity resulting from the interconnection of the two balls, the act of imparting the desired rotation is made easier and the rotation of the ball is readily observable. This process is performed in several steps to first focus on the appropriate wrist/hand action and then to focus on the full arm delivery. The device can also be used by the student alone, by flipping the ball into the air while imparting the appropriate rotation to the ball.

Abstract: A golf club cover practice device, suitable for attaching to the head of a golf club, driver (11) that allows one to practice accuracy while swinging a golf club towards a golf ball size practice disk (22). In a preferred embodiment the device generally includes a flexible type material that has been formed into the shape of a golf club head (13) and has the ability to be opened, closed, and tightened. Attached to the device is a piece of hook and loop fastener that will lay over the club face when the cover is in position on the club. The opposite piece of hook and loop fastener will cover a golf ball size practice disk (22). The union of the two opposite pieces of hook and loop fastener, brought about by swinging the golf club toward the golf ball shaped practice disk (22) concludes with the disk adhering to the face of the golf club. Once accomplished one can see exactly where he is striking a golf ball with the face of his golf club.

Abstract: A golf training ball comprising at least two cloth stuffed elements each element featuring a sealing point and, stitching to combine the cloth stuffed elements into a unitary ball, where the stuffing comprises a soft fiber, and the cloth elements and stitching are so arranged such that the unitary ball has a core and a periphery with a density gradient between the core and periphery where the golf training ball has a heavier mass in the core and a lesser mass of a soft structure at its periphery to provide a high shock absorbing ability.

Abstract: A golf ball having a multiplicity of dimples in its surface is adjusted to a weight of 40 to 45 grams and a diameter of 43 to 47 mm. The dimples occupy at least 60% of the ball surface and satisfy 0.35.ltoreq.V.sub.0 .ltoreq.0.60 wherein V.sub.0 is the volume of the dimple space below a circular plane circumscribed by a dimple edge, divided by the volume of a cylinder whose bottom is the circular plane and whose height is the maximum depth of the dimple from the bottom. The ball is improved in flying performance in that it offers an adequate trajectory and an increased flying distance when hit by an ordinary golfer with a head speed of about 40 m/sec. with a driver or long iron. Hitting feel is also improved.

Abstract: A golf practice device includes a tethered practice ball which enables the user to practice full-swing golf shots in an area as small as 25-30 feet in length and which when hit properly immediately returns the practice ball toward the user for re-hitting. The golf practice device includes a low resilient urethane foam practice ball, generally of the size of a conventional golf ball, which is attached to an elastic cord. The elastic cord is attached to a swivel element which is, in turn, attached to a non-elastic cord. The non-elastic cord is attached to a bag which is weighted down with a removable weight element, such as sand, pennies or the like. In use, the weighted bag weighs the golf practice device down, the elastic cord functions to return the ball, and the swivel element permits relative rotation of the elastic and non-elastic cords.

Abstract: A golf putting aid comprising first and second golf balls connected together in an abutting relationship by a threaded connector that extends into holes formed in the first and second golf balls. The first golf ball includes a center formed by a thin wall, an elastic cover wound around the thin wall, a hard cover enclosing the center and elastic cover, wherein the hole formed in the ball extends through the hard cover and terminates adjacent the center. The second golf ball also comprises a center formed by a thin wall, an elastic cover wound around the thin wall, a hard cover enclosing the center and elastic cover, wherein the hole formed in the ball extends through the hard cover and terminates adjacent the center. The threaded connector has first and second threaded ends extending into the holes and urges the first ball to abut the second ball, such that centers of the first and second golf balls are spaced apart a distance less than the length of the face of the putter.

Abstract: A golf ball and method include providing a number of indicators for properly aligning a golf ball, a golfer and a golf club relative to an intended path of travel. The indicators include a ball-travel indicator for alignment with the intended path, a ball-to-ground indicator for positioning the golf ball in relation to the surface on which the ball is positioned, a foot-to-ball indicator for aligning the golfer, and a putter-alignment indicator for properly positioning a striking face of the golf club. In the preferred embodiment, the indicators are stenciled onto the golf ball.

Abstract: A system for enabling golf practice to be held in a limited space including:a cylindrical, PVC, pipe casing containing weight means and having a first end with an end cap fastened thereon, an eye bolt fastened to said first end cap, and a second end having an end cap fastened thereon, forming a sealed container for said weight means,a golf ball having a bore formed therethrough at the diameter, said bore countersunk at one end, anda tethering cord having a first end and a second end, said cord secured at said first end to said golf ball, said cord passing through said bore and secured therein, and shaped to conform to the outer surface of said golf ball at said first end, and said tethering cord secured at a second end to said eye bolt, said second end passing through said eye bolt, and secured to itself by a clamp, thereby forming a loop,whereby when said golf ball, said cord and said pipe casing are strung out in alignment and said ball is struck by a golf club, said ball will travel along its natural traje