Abstract: A racket structure to be used in a tennis and the like racket and a method for producing it, where the handle section and the head frame section are made of a one-piece composite member including an inner lightweight soft plastic core member having a central prestressed multifilament cord member and a glass fibers reinforced hard plastic, outer surrounding layer, anchored on said core member within the head frame section, said surrounding layer being covered on opposite faces with respective resilient flow cover members which also sheath part of the height of said head frame section on the inside face, facing the netting, defining the striking surface stretched in the oval space defined by the head frame section of the racket.

Abstract: A tennis practice backboard is provided that allows a tennis ball hit against the practice backboard to return to approximately the same spot at about the same height every time. The system is constructed at the tennis court from a plurality of panels. The panels are concaved and formed of structural polyurethane foam material, the top of the backboard is tilted backwardly with respect to the bottom by a small positive angle, adjacent panels of the backboard are fastened to one another, brackets are fastened to the panels, horizontal members are connected to the brackets whereby the horizontal members are mounted to posts of a tennis court fence, the panels are not affected by humidity, wind, rain, cold, heat or other adverse weather conditions.

Abstract: A paddle apparatus (10) for use in a paddle ball game is disclosed. The apparatus (10) includes a generally planar paddle member (14) mounted at one end of an elongated handle (20) or grasping member. At the opposite end of the handle (20) a frame (34) having a stocking member (40) suspended therefrom is mounted. In a preferred embodiment, the frame (34) and paddle member (14) can be substantially coplanar.

Abstract: A hollow injection moulded thermoplastics games racket frame comprising a head (21) and a shaft (20), the head (21) having integrally-formed internal supports (25) containing the stringing holes (23) and the moulding being polyurethane foam-filled. The foam filling is provided in two parts, a lighter filling (32) for the head and a denser filling (33) for the shaft. The shaft filling (33) is integrally-formed with a foam handle portion (34). The handle end of the shaft is preferably provided with moulded-in holes (31) through which filling (33) can flow during its foaming.

Abstract: A hand grip for a hand-held implement, e.g., a golf club, that consists of a rigid cap and a one-piece flexible foam tubular sleeve. The cap is structured to cooperate with the implement's handle shaft for locating and retaining the grip on that shaft, and for protecting the end of the shaft and the outer end of the foam sleeve. The one-piece flexible foam sleeve, preferably with an outer skin thereon to resist abrasion, provides a cushioned grip to the user. A novel method is also provided by which the rigid cap and foam sleeve grip are fabricated.

Abstract: In order to improve a touch, this invention provides a ball of the inflatable type comprising a rubber tube used as a ball substrate which is introduced with gas under pressure therewithin, a reinforcing winding layer formed by simultaneously winding the combination of a nylon thread and either an elastic rubber or urethane elastomer thread around the outer periphery of the rubber tube, and a surface cover layer made of a natural or synthetic leather stock which covers the reinforcing winding layer therewith through an adhesive with or without interposing an intermediate rubber layer formed by molding and vulcanization on the peripheral surface of the reinforcing winding layer.

Abstract: High performance one-piece solid molded polyurethane vulcanizate golf club heads having a unitary body including the entire front striking face and exhibiting specific properties by virtue of the vulcanizate; and golf clubs comprising the combination of said heads each with a golf shaft.

Abstract: A polyurethane gripping material for hand held implements. The material is an adhesive backed polyurethane sheet which includes a plurality of small pores on the surface of the sheet. The pores are formed by sprinkling salt on the surface of the sheet while it is in a softened state. The sheet is then cured and sanded down to expose and remove some of the salt granules. Many small pores are exposed by the removal of the salt. The pores act as suction cups to increase the performance of the grip.

Abstract: A dartboard safety surround for receiving badly-aimed darts which narrowly miss the dartboard comprises an annular element of an elastomeric material such as, for example, a polyether urethane elastomer, which is dense enough to hold darts piercing the element and which resiliently grips the periphery of the dartboard. The rear face of the annular element defines a recess which is occupied by a filler having a density less than the elastomer of the annular element.

Abstract: The subject invention relates to a golf ball having a cover which is completely or partially formed from a cellular polymeric material. By incorporating the subject invention into a golf ball structure, it is possible to selectively alter its "feel" characteristics, the physical properties and flight characteristics. The subject invention can be utilized with golf balls having either solid or wound cores. The subject golf ball cover can be formed from a plurality of natural and synthetic polymeric materials. It is preferred that the golf ball cover be formed from ionic copolymers of polyolefins and unsaturated monocarboxylic acids wherein said ionomers incorporate zinc or sodium ions. Mixtures of said ionic copolymers may likewise be utilized.

Abstract: A golf game playable in an area of reduced size but closely simulating regulation golf using an enlarged ball having a scuff-resistant outer shell and a single dual faced golf club. The golf club has a head defining a first blade or ball striking surface which is curved or inclined to impart various degrees of loft to the ball depending on the location along the blade surface at which the ball is struck. The club head is provided with a second striking surface at the front edge of the first surface which is used for imparting a low, long distance trajectory to the ball as when driving the golf ball and which surface may also be used for putting the ball towards the target pin. The object is to advance the ball into a cup or specially designed target pin. The target pin includes a circular base ring which defines the target area and the base also supports an upstanding pin carrying an indicia bearing flag.

Abstract: A weight member to be mounted on a ball bat to be used in making practice swings prior to becoming a batter in a ball game, has two substantially symmetrical relatively dense members each having a hole therein aligned with the hole in the other for passage of a baseball bat therethrough. The members are fastened together in fixed spaced positions with an intermediate resilient member fixed in spaced relation with each of them and having a hole therethrough aligned with the holes in the dense members for passage of the bat therethrough and for frictionally engaging the bat to removably secure the weight member to the bat.

Abstract: A baseball suitable for continuous use in a pitching machine comprises a molded, resilient polyurethane foam sphere having a type A-2 shore durometer hardness of less than about eighty to eighty-five. The sphere has a smooth polyurethane surface skin, with the surface of the sphere being provided with a regular pattern comprising a multiplicity of cup-like or hemispherical depressions substantially covering the surface. The baseball has the advantage of durability as well as the advantage of being formed economically in one operation from a homogeneous composition. The cup-like depressions enable the ball to travel greater distances than would be expected for the resilient material, and enhance the accuracy with which the ball can be pitched, bringing the ball substantially within the range of initial performance of a conventional or regulation baseball.

Abstract: A detachable quiver for bow mounting on a bow having a pair of mounting members mounted on the bow and formed integrally with a plastic quiver are maintained in connected condition by a resilient biasing arrangement formed integrally with one of the plastic mounting members.

Abstract: Golf balls are provided having a thermoplastic polyesterurethane cover comprising the reaction product of a polyester having a molecular weight from about 800 to 1500 reacted with para-phenylene diisocyanate or 1,4-cyclohexane diisocyanate, which is thereafter molded around a golf ball core.

Abstract: A pliant hollow screw of thermo plastic material for threaded engagement in a bow handle section to adjustably space an arrow from the adjacent side of the bow. The screw has a cluster of integrally formed flexible pins projecting longitudinally from its closed, arrow engaging end and a harder metal expanding screw entered therein. The harder expanding screw being larger than the inside diameter of the hollow arrow spacing screw thereby to expand and lock it in an adjusted position. A modified form of the arrow spacing screw has a cluster of flexible filaments extending longitudinally from and attached to the arrow engaging end of the screw.

Abstract: Hockey puck structure is disclosed to include a generally cylindrical impact member of translucent material and a plug means disposed within the impact member containing a light source.

Abstract: A game footbag designed to be kicked repeatedly into the air discloses a durable, flexible cover having a generally spherical shape when fully expanded and partially filled with material having substantially fluid characteristics. The cover consists of two dogbone-shaped pieces of flexible material attached together at their peripheries so as to form a collapsible ball. The fluid material includes a large plurality of small polythylene particles having low resilience. The interaction of the cover with the fluid-like material results in a footbag having a slow-action and uniform response to kicking.

Abstract: A ball is disclosed formed with a spherical core of polyurethane foam covered with a thin winding of cotton yarn and with a hand stitched outer cover; the ball is formed in a mold by providing a polymeric isocyanate with a mixture of water and a polyol crosslinking catalyst with the ratio between the isocyanate and the mixture of the catalyst and the water being variable to provide a ball of desired weight, resilience and density so that the ball formed by the method can duplicate such characteristics as found in regulation baseballs and softballs, for example.

Abstract: A lightweight, non-injurious amusement ball designed for use in a restricted area or where it is desirable to prevent injury to the surroundings and participants from impact with the ball. The ball is fabricated from resilient, cellular plastic foam strips of rectangular cross section compressed in a central core and extending radially into an essentially spherical periphery. The periphery is impact absorbent and wind resistant for non-injurious activity and limited flight. A core is used to tie and compress the strips in the central core, providing increased density for stable trajectory.

Abstract: A polyurethane golf ball is disclosed. The golf ball comprises a core and a cover at least one of which is a polyether urethane prepolymer with a curing agent selected from the group consisting of trifunctional polyols, tetrafunctional polyols and amine-type curing agents having at least two reactive amine groups.

Abstract: An indoor football (soccer) match set including at least one gate or goal, but preferably two goals, and a ball. A movable plate within the goal is responsive to a ball entering the goal. A movement of the plate is transmitted to a counter mechanism through a latch element having a cam which contacts the rear face of the plate. The counter mechanism comprises a bar having numbered marker panels arranged thereon, which bar is adapted to move downwards by one panel each with every movement of the plate. The downward movement of the bar is controlled by latches of the latch element which engage teeth in the bar.

Abstract: There is disclosed a removable hand grip that is received over the hand gripping portion of a handle of a tool, particularly of a tennis racket and the like. The hand grip comprises a tubular sleeve of an open-celled, noncapillary, porous material having an uncompressed wall thickness no greater than about 5/16 inch. Most preferably a material of a reticulated structure such as a non-woven fibrous material is used. This material, in contrast with sponge and sponge-like materials has a low water holding capacity, less than about 20 volume percent. Preferably, the hand grip has a high degree of compressibility, typically with a compression resistance at about 80 percent deflection no greater than 1.5 to about 4 pounds per square inch. The low capillary and open-celled structure of the sleeve insures breathing of the sleeve under repeated compression which is adequate to expel most moisture during use. This breathing action is accentuated by the high compressibility of the foam.

Abstract: A target made of interchangeable sections each comprising a multiplicity of membranes or plies of penetrable, elastomeric or resilient, tear resistant sheet resin material, the membranes being separated by intervening layers of porous or low density, resilient material such as foam resin material.

Abstract: An improved golf ball is made from a composition comprising an unsaturated elastomer cross linked with a chain comprising the reaction product of a monohydric alkenyl ester and a diisocyanate or a diisothiocyanate.

Abstract: A composite molded baseball bat is provided using a tubular, high yield strength aluminum core surrounded by a foam plastic body having a density of from 30-50 pounds per cubic foot and an integral outer skin. The tubular aluminum core has an outside diameter of from three-quarters to 1 inch and a wall thickness of from 0.062 to 0.125 inch.

Abstract: The invention provides tennis balls which comply in their behavior with the requirements of the "Rules of the International Lawn Federation" and which consist wholly or partially of a rubber based on natural and/or synthetic rubber which contains 15 to 50 parts by weight of a finely powdered aminoplast resin with a specific surface area of >5m.sup.2 /g. Suitable fillers for the rubber are urea/formaldehyde and melamine/formaldehyde polycondensation products. The tennis balls according to the invention can either have an internal gas pressure of 1.4 to 2.3 kg/cm.sup.2 (absolute) or they can be non-inflated, i.e. internally they have atmospheric pressure. The good behavior of these tennis balls is retained over an extended period of play. The tennis balls according to the invention are either provided with a textile or felt covering or they have no covering.

Abstract: A solid plastic polyurethane golf ball is disclosed. The golf ball comprises a polyether urethane prepolymer with a curing agent.

Abstract: A ball is disclosed formed with a spherical core of polyurethane foam covered with a thin winding of cotton yarn and with a hand stitched outer cover; the ball is formed in a mold by providing a polymeric isocyanate with a mixture of water and a polyol crosslinking catalyst with the ratio between the isocyanate and the mixture of the catalyst and the water being variable to provide a ball of desired resilience and density so that the ball formed by the method can duplicate such characteristics as found in conventional baseballs and softballs.

Abstract: Golf clubs are provided with polyurethane inserts on the striking face. These golf clubs have been found to have advantage over standard golf clubs in that a golf ball hit with these clubs travels a greater distance, all other conditions being equal.

Abstract: A throwing device made of a light weight, resilient foam material, such as urethane, having a generally hemispheroidal shape with a rounded base. The throwing device has an outer surface formed of major and minor surfaces which have a common axis of symmetry and are convex relative to a plane perpendicular to the common axis. The major and minor sub-surfaces each have an extremal point along the axis with the major sub-surface point being farther from the plane than the minor sub-surface point. The major sub-surface is a segment of a substantially spherical segment.