Abstract: An improvement in the appearance of golf balls is disclosed. The "clear coat," i.e. the transparent coat which is the last put on the outer surface of the golf ball, has included in it an optical brightener, preferably one selected from the group consisting of stilbene derivatives, styryl derivatives of benzene and biphenyl, bis(benzazol-2-yl) derivatives, coumarins, carbostylrils, naphthalimides, derivatives of dibenzothiophene-5,5-dioxide, pyrene derivatives, and pyridotriazoles. Substantial improvements in appearance of the golf ball are obtained.

Abstract: A polyurethane covered golf ball is made by allowing the polyurethane cover stock material to partially cure in an open mold and subsequently molding a golf ball product. The molding is done by first molding a smooth-surfaced golf ball product in a smooth-walled fixed-pin mold and then, in a second molding step, using a compression mold to impart dimples onto the smooth-surfaced golf ball product. Between the two molding steps an intermediate curing step is employed. The initial curing time is an open mold and the intermediate curing time between the two molding steps is minimized through the use of a sufficient amount of catalyst, by keeping the smooth mold at an elevated temperature, or by using the fast-reacting chemical components.

Abstract: A tennis racket having a graphite fiber containing frame with an opening at the head end constituting a bow and with a handle pallet at the handle end. The handle pallet is formed of a soft, dense, indexable urethane. The bow is formed with a common cross-sectional configuration enlarged in the direction of the axis of the opening and located around the majority of the opening. The racket also includes a grommet strip formed of a soft, durable, wear resistant polyurethane-polycarbonate blend secured to the radially exterior edge of the bow around the majority of the opening.

Abstract: This invention is comprised of a golf club molded in a single piece including grip, shaft and head, preferably in the form of a putter or a wedge or in an alternative embodiment a golf club employing a flexible plastic shaft with a conventional grip and club head. These clubs are molded out of rubber or a flexible plastic material with appropriate physical properties to approximate the appearance and feel of a conventional golf club. However, the characteristics of rubber or rubber like material permit the club to be bent, twisted or deformed by violent contact with the ground or other objects. The material of construction permits a club after such distortion to be returned to its initial shape. These characteristics are designed primarily to permit a frustrated golfer to vent his feelings of frustration or dissatisfaction in a way that is non-destructive of his equipment.

Abstract: The invention is a novelty ball having a multiplicity of extending flexible whisker-like protrusions. The whiskers are generally within the range of about 0.5 to 2.5 times the diameter of the ball. Materials of construction may vary but sponge rubber has been found to be very satisfactory for the ball and very small diameter surgical rubber tubing for the whiskers. As an example, a ball about 21/2 inches in diameter may have about 14 to 20 whiskers. The balls when thrown will travel straight but roll to a stop very rapidly due to the whisker action. They are particularly useful for teaching children throwing and catching skills and for juggling since, when in the air, they appear considerably larger than their actual diameter.

Abstract: A ball for throwing having a generally spherical shape and balance has an axis, first and second convex surfaces defined about the axis at opposite poles, and at least one groove having a non-uniform depth defined in the surface of the ball between the first and second convex surfaces. The groove is arranged to extend through the equatorial region of the ball, between the first and second convex surfaces.

Abstract: There are disclosed foamable compositions comprising at least one polyisocyanate, at least one polyhydroxy compound and at least one blowing agent having evenly distributed therethrough discrete particles of cellular rubber. The resulting urethane foam-cellular rubber is suitable for use as a target backstop, e.g., archery target backstop.

Abstract: A far infrared ray radiating mattress has a three layer structure including a lower layer of plate-like resilient and foamed synthetic resin, a middle layer of foamed synthetic resin corrugated in a longitudinal direction and having a plurality of protrusions provided on the upper surface thereof; a sheet-like far infrared ray radiating heater is provided on the three layer structure; and a cover is provided so that the three layer structure and the sheet-like heater are surrounded thereby.

Abstract: A ball return/target for racquet sports includes a resilient pad and at least one disk suspended from the pad by a filament. The pad is flexible polyurethane open cell foam of a thickness to cause a projectile hitting it to be deflected back at the source. The disk is a double thickness of fabric or like material with two faces, each face visually distinguishable from the other. When a projectile hits the suspended disk on one face, the disk rotates 180.degree. exposing the other face to give evidence that the target had been hit.

Abstract: A bowling ball having a substantially large portion of the ball's weight concentrated toward the center of the ball, to form a bowling ball having a low moment of inertia. The ball comprises a solid inner core made from a mineral oxide such as lead oxide mixed with a binding resin such as polyester, an outer core surrounding the inner core and made from filled or unfilled elastomers such as polyurethane or polyester, and a low density syntactic foam cover encapsulating the outer core and made from polyurethane or other elastomers mixed with glass microballoons, and having a minimum Shore D hardness of 72 and a maximum specific gravity of 1. The inner core in conjunction with the outer core and cover has a calculated maximum moment of inertia of 0.184 in-ozs-sec.sup.2 per pound of ball weight, for providing a substantially high total kinetic energy output.

Abstract: A durable, composite safety ball is disclosed which is formed with a soft, resilient, substantially closed-cell plastic foam core. The safety ball, including the cover, has a type A durometer less than about 60 and preferably in the range of about 25 to about 45. Preferably the core is surrounded by an inner skin which is formed to substantially prevent the entry of water into the foam of the core and, together with an outer heavy, tightly knit nylon cover, to provide sufficient strength to hold the soft cellular plastic foam together as a unit. The soft foam core is preferably a urethane foam and enables the formation of balls which have a performance similar to regulation baseballs and softballs and yet will not produce a substantial risk of injury to players or risk of property damage. Examples of balls having a circumference ranging from 9 to 16 inches, a weight ranging from 3.25 to 8.

Abstract: A flexible weighted device for the purpose of practice or warm-up formed from a moldable plastic resin with an integrally molded weight at an outer portion and a stiffening device at an inner end. The configuration simulates a bat or the like with standard dimensional appearance with a grippable handle and an outer portion designed to strike a ball. The bat has a flexible intermediate portion with sufficient resiliency to bend and discharge substantial amounts of inertial momentum at the end of a swing, thereby preventing injury to the user.

Abstract: Disclosed is a unified set of golf clubs, from wood clubs through wedge clubs, in which loft and lie angles, face progression, and club lengths are coordinated and correlated. The center of gravity of each club is lower, further back and more centered on the club face than is usual. In addition, each golf club of the set features a sole width of at least 1.25 inches. The center of gravity of each club head is located no more than 0.7 inch above the sole and at least 0.5 inch from the centerline of the club shaft.The club heads of this invention may be fabricated as a hollow metal shell. Alternatively, the club heads may be formed of a low density, high strength material such as reaction injection molded polyurethane. In such an embodiment weighted inserts are molded into and encapsulated within the polyurethane.

Abstract: Tubular baseball bats are provided with optimized power zones by weighting the bats between the swing axis and the knob end. By adding a specified amount of weight at a location within this weighting region, the sweet spot of the bat, in effect, may be greatly enlarged so that the sweet spot comprises a power zone extending inwardly from the outer end of the bat. The power zone therefore comprises the portion of the bat which travels at maximum velocity as the bat is swung into the ball, and the ball impacts within the power zone effectively transfers less than 10% of the impact impulse to the hands. The hit ball therefore travels faster and further.

Abstract: The present invention provides a racket frame with a grip which includes an inner low rigidity layer embracing the rear end section of a shaft and an outer high rigidity layer embracing the inner low rigidity layer and partly in direct contact with the shaft, the direct contact being at the position of the node of the primary vibration transmitted through the shaft when striking a ball.

Abstract: Shock and vibration is suppressed in a racquet having a tubular frame of metal, graphite, fiberglass, or the like, by a bar or column of shock-and-vibration-absorbing material such as foam. The bar is 5 inches to 10 inches in length and is weaved over and under the vertical strings in the region, between the handle and the nearest cross or horizontal string, where a ball or shuttlecock would not impact in normal play. The ends of the bar are brought through the end spaces between the string and the frame of the racquet and tucked under the frame. The bar is composed of layers of the shock-and-frequency absorbing material. The material is soft, light and resilient. The inner layer or layers has a higher density than the outer layer. The frequency for which the maximum absorption occurs decreases progressively from the inner layer or layers outwardly. The resonant frequency of a typical racquet is about 650 hertz. The predominant absorption frequency of the outer layers of the bar is between 500 and 2000 hertz.

Abstract: A racket body formed of composite materials in which the shaft portion of the handle, two branches of a throat portion and a frame portion, which can be completed by a bridging portion, adjoin in end to end relationship and have cores and sheaths composed of different materials. The sheaths are comprised of fiber webs or braids impregnated with synthetic resin, the fibers differing along the length of the racket from at least one portion to another, while the orientations of the fibers with respect to the axes of the respective cores can differ from place to place as well. The end portions of thetwo branches of the throat are axially offset from one another so as to avoid the formation of a rupture zone.

Abstract: Cushioned baseball bats comprising a semi-rigid support structure and a resilient cushion portion surrounding at least a portion of the support structure are provided. The bats of this invention are of substantial enough weight and rigidity that they can be used in a game substantially similar to conventional baseball or softball, but the bats of this invention are less likely than conventional baseball bats (or bats designed to replace conventional bats) to cause serious injury when they strike a person. The bats of this invention are preferably used with lighter and softer balls so that a game that is substantially similar to conventional baseball or softball may be played with a reduced danger of serious injury.

Abstract: A fastener comprises a filament having two opposing heads. The heads have two ends defining non-parallel planes, forming acute angles which share a common ray. The fastener is installed by being driven through two needles having slotted bores.

Abstract: A dimpled golf ball for use after dark. The ball is made of translucent plastic and contains in a diametrical hole therein a chemiluminescent light stick which when activated renders the ball when used in the dark plainly visible in the air and on the ground. In a preferred form, the ball is made to comply with the rules of the United States Golf Association so that it may also be used for competitive daytime play. In a modified form, the resilience of the ball may be substantially diminished so that it will travel a much less distance than the preferred ball when hit with the same club.

Abstract: A baseball base incorporates an anchor defining a top surface and post or the like for inserting into the ground to secure the anchor in place, and a baseball base which has a ferromagnetic plate secured to the underside. The anchor incorporates a plurality of parallel, spaced elongate bands which constitute alternating north and south magnetic poles, so that the plate and baseball base can be secured and retained in place on the poles. By changing the size of the plate, the force required to separate the base from the anchor can be altered.

Abstract: A tagging stick has a long, solid, rod-like, cylindrical body composed of resiliently flexible cellular foam material, such as polyurethane foam, being stiff enough to allow grasping and swinging by a human without bending but soft enough to permit striking objects and human bodies. The stick body has an exterior surface configured to form a plurality of pockets of air which, upon impact of the body against an object, cause compression of the air and production of loud popping sounds. Preferably, the body surface which defines the air pockets has an undulating configuration composed of alternating ridges and troughs with respect to a cross section along a longitudinal axis of the body.

Abstract: An improved ice hockey stick is disclosed which is made with a handle component whose lower end tapers to fit closely into a closely conforming groove in the rear edge of a hardwood table. The handle component may be made of hardwood or it may be made of foam injected plastic material in accordance with another aspect of the subject matter disclosed. The foam injected handle component has a centrally located filler member and, on each side, a reinforcing strip of unidirectional strands of fibers in a suitable bonding agent mounted flush with the wide sides of the handle. A process for making a foam injected plastic component is disclosed as well as a method of making an ice hockey stick using the novel joint applicable to conventional hardwood handle components and to foam injected plastic handle components.

Abstract: A bat has a generally uniform outside diameter from its handle through its extension from the handle through to its opposite end. The outside of the bat beyond the handle is polished and it has an interior cavity. Reinforcing is providing in the cavity to increase resistance of the bat to bending upon impact. The reinforcing and bat body proper combine to attribute swing weight and feel to the bat which approximates that of a conventional flared bat.

Abstract: An artificial pitching pad device (A) is disclosed for being implanted in a natural pitcher's mound constructed or earthen material which includes a rigid base member (B) and a resilient friction pad (C) embedded within the base member having a contoured artificial pitching surface (18). A raised rear support pitching surface (20) is formed at a rear of the device and terminates in a depressed ledge (22) which receives a pitching abutment block (24). A lower pitching support surface (40) is disclosed below the raised rear support surface (20). The lower support surface includes a foot support surface (42) for receiving the foot of a pitcher abutting against the pitching block (24) in a pitching stance. The lower pitching support surface further includes a runway surface (48) of the resilient friction material which accommodates full movement of the pitcher after delivery.

Abstract: In construction of a golf club head having a fiber reinforced plastic shell, the neck section of the shell provides the first hold and an inward bulge on the sole side section of the shell provides the second hold, both for the club shaft so that presence of a dual hold joint structure enables effectual energy transmission at hitting balls and reliably prevents accidental separation of the club head from the club shaft.

Abstract: A playing ball for kicking, throwing, spinning, or rolling, and combinations of these having an outer skin formed by three geometric portions, a central cylindrical disc having a diameter of about nine units of measurement and a pair of flanking dome shaped parabolic portions connected to the cylindrical central portion and both of the domes on the same principal axis as the cylindrical center portion and smoothly connected thereto.

Abstract: A one-piece, hollow, moulded head for a golf-club of the "wood" or "driver" type is made by injecting a thermoplastics material around a fusible core having a melting-point below the injection temperature, allowing the injected material to set and melting out the core.One or more holes are provided, the holes extending completely through the core, so that the injected material fills each hole and sets therein to provide corresponding internal "struts" in the moulding.The injected material may be, e.g., a polyamide, a polycarbonate, a poly(phenylene oxide), an acetal resin or an ABS resin. The material may be reinforced with up to 50% by weight of glass and/or carbon fibres.The moulded head may optionally be filled with a polyurethane foam.The finished moulding may have the conventional face-pieces and/or sole-plates attached thereto.

Abstract: A game ball for playing baseball or softball, and the method for making the ball. The ball is formed of a hollow plastic shell filled with an expanded plastic material, and a cover completes the ball. The weight of the ball is provided by the weight of the shell, the expanded plastic filling the shell, and the cover. The COR, sound, and feel off the bat are provided almost entirely by the plastic shell. The material of the shell is an ionomer or a polyolefin, and the preferred material is an ethylene acid copolymer, the material for the shell being selected to have a hardness in the range of Shore D 30 to 65. The expanded plastic filling the shell may be any self-initiating material. The method for forming the ball is to mold two hemispheres, place a liquid mix for forming the expanded plastic into the lower hemisphere, weld the upper hemisphere to the lower hemisphere, the upper hemisphere having a vent hole at the top, and let the shell rest while the material expands to fill the shell.

Abstract: A vibration dampening device for use with hand held sporting rackets, particularly tennis rackets, having a face or striking surface formed of two intersecting sets of parallel strings. The device of this invention comprises a block of viscoelastic foam which is compressed and inserted between the strings on the striking surface. This block of foam is preferably in the shape of a cylinder and when it is inserted between two, adjacent parallel strings it assumes a generally spherical shape. Typically, this compressed block engages four adjacent strings of both sets of strings, or three strings and the racket frame. This block may be placed at various positions on the racket striking surface, and significantly reduces vibrations created in the racket by the striking of a projectile, such as a ball. The device may be constructed of various combinations of different types of foam, and may have any desired color or design.

Abstract: A game ball is comprised of an outer layer of foamed polyurethane plastic having a density of approximately 15 pounds per cubic foot, the layer having an external integral skin having a density of 20-30 pounds per cubic foot providing a protective cover and an integral inner skin having a density of 20-30 pounds per cubic foot providing a cavity in which a core ball of resilient material is contained. The core ball has a density of 70-76 pounds per cubic foot and a lesser degree of compressibility than the foamed layer of polyurethane plastic. The core ball is lubricated by carbon contained in the core ball when fabricated from natural rubber and by means of a lubricating film when fabricated from natural rubber and polybutadiene so that in either case the core ball is free to move or shift within the cavity when the baseball is impacted by a bat.

Abstract: The golf club head comprises a shaped core body of material selected from synthetic and natural rubber and an outer shell closely surrounding substantially the entire surface of the core body of polymeric thermoplastic material selected from the group of polycarbonate, polyamide and polybutylene-terephthalate. According to a preferred embodiment, the golf club head further comprises a center core body embedded within the core body and consisting of closed envelope completely filled with liquid.

Abstract: A molded composite racquet is provided, wherein the frame of the entire racquet is prepared using the combination of continuous graphite fibers longitudinal within the shape of the frame, wrapped in a bias arrangement with layers of fiberglass, that combination being covered by a protective resinous outerlayer. The presence of the graphite fiber in a unidirectional orientation around the hoop of the racquet in the plane of the strings increases the resistance against compression with minimal affect on the flexibility, bending or torsion, of the racquet. The concentric and bias orientation of the fiberglass layer supplies sturdiness to increase the resistance to torsion and bending stress. The molded composite racquet achieves a controlled impulse duration during impact with a game ball which provides greater control during impact and less shock to the user of the racquet during the recreation.

Abstract: A badminton racket comprises a tubular shaft and an oval shaped frame internally connected to the shaft by a T-shaped joint including a pair of horizontal extensions and a vertical extension. The frame has opposite end portions with opened end faces, each of which is recessed at the lower side thereof in a semi-circular shape, and abutted against each other except at the recessed portions. The horizontal extensions of the joint are fitted in the end portions of the frame while the vertical extension is fitted in the upper end of the shaft. The junction area of the racket is coated with FRP layers to provide external connection.

Abstract: A composite baseball bat has a unique tapered aluminum spar encased in polyurethane foam. The tapered spar is formed by swaging, starting with an aluminum tube whose outer diameter and wall thickness are those for the barrel section of the bat. A tapering portion is swaged to a decreasing outer diameter and increasing wall thickness, which is then constant over the handle portion of the bat. This construction yields far greater stiffness and freedom from objectionable vibrations.

Abstract: A baseball bat comprising a hollow metal core of varying diameter and a foam plastic body enveloping the core. The plastic body has a handle section and a hitting section that are separately molded so that said handle section is softer than said hitting section and can be of a different color when desired.

Abstract: A golf club head includes a core formed integrally with a sole of the head and extending upwardly therefrom in a triangular cross section. The core is formed of metal, such as soft iron or stainless steel. At least the front of the core is covered with fiber reinforced resin consisting principally of carbon fiber to form a clubface. The lower marginal edge of the clubface is formed flush with the sole.

Abstract: A golf game utilizing a series of incrementally weighted balls with a normal set of golf clubs such that the incremental changes in weight of the balls compensates for the varying changes in angle of the heads of their corresponding golf clubs to yield approximately the same distance in flight. This game contemplates the use of one or more targets for playing a simulated game of golf in which a player uses his normal swing.

Abstract: A ball for use in an indoor or outdoor baseball-type game played by a small number of players in a playing field of limited size. The ball is pitched by a defensive player to an offensive player who tries to strike the ball with an elongated bat. The ball weighs less than 2 ounces and is made of a resilient, low mass material of generally spherical configuration with an outside diameter of at least 2 inches, and having a plurality of interconnecting concave indentations thereon. The width of each of the indentations is at least 1/8 inch. The bat contains a longitudinal bore in the ball striking end thereof, and the dimensions of the bore and the ball are such that when the end of the bat is pressed against the ball, the ball is forced into the bore and retained therein until removed by a player.

Abstract: A kicker wheel roller assembly for an automatic bowling ball return mechanism comprising a permanent hub member and a replaceable contact surface member frictionally mounted thereof. The contact surface member is formed of an elastomeric resilient friction material, e.g. polyurethane, and has a non-circular opening, e.g. square, splined, etc., therethrough which is received on a matching non-circular driving portion of the hub member. The conformed non-circular mating surfaces provide a positive driving connection between the hub and contact surface members. The contact surface member is held on the hub only by its resiliency and can be easily positioned onto and removed from the hub which, in turn, is reuseable.

Abstract: The invention provides a ball for a game having a spherical soft polyurethane foam and a surface layer of foamed polyvinyl chloride formed on the surface of the spherical body. The ball is produced by first casting the surface layer in a mold to form a hollow foamed PVC body having closed cells, and then charging a foamed polyurethane composition into the hollow thus formed, to produce a sphere of polyurethane having open cells within the surface layer. Also provided is a ball for games having a spherical body of foamed polyvinyl chloride and having a spherical cavity at the center. The ball is safe, has proper flexibility, and is not subject to punctures.

Abstract: An inflatable padded game ball comprising an inner bladder assembly and an outer carcass enclosing the bladder assembly. The carcass comprises an outer cover of relatively tough durable material, padding on the inside of the cover, and a liner on the inside of the padding. The inner bladder assembly comprises an inflatable bladder of an elastic substantially air-impervious material, and a sheath around the bladder for restraining expansion of the bladder when it is inflated thereby to reduce the outward pressure on the carcass and thus increase the dimensional stability of the ball.

Abstract: A durable, composite safety ball is disclosed which is formed with a soft, resilient, substantially closed-cell plastic foam core. The safety ball, including the cover, has a type A durometer less than about 60 and preferably in the range of about 25 to about 45. Preferably the core is surrounded by an inner skin which is formed to substantially prevent the entry of water into the foam of the core and, together with an outer heavy, tightly knit nylon cover, to provide sufficient strength to hold the soft cellular plastic foam together as a unit. The soft foam core is preferably a urethane foam and enables the formation of balls which have a performance similar to regulation baseballs and softballs and yet will not produce a substantial risk of injury to players or risk of property damage. The composite safety ball is also sting-free and has a long useful life.

Abstract: The outer shell of a bowling ball, vulcanized in situ onto a spherical core, is formed of a mixture of sulfur-vulcanizable rubber, preferably SBR rubber, inert particulate filler such as rubber dust, sulfur, process oil, and polyurethane, with suitable accelerators and pigment. The polyurethane, comprising about two to about ten percent by weight of the shell, is preferably of a kind that is retarded in curing by the presence of the sulfur and is generally incompatible for polymerization with the rubber; the ball exhibits superior hooking and hitting characteristics and has high oil resistance.

Abstract: A golf club head comprises a shell of carbon fiber reinforced plastic, a polyulethane core embedded in the shell, a metal sole member having pointed pins extending through the shell into the core to position and retaining the core in the shell and an upwardly converging neck reinforcement embedded in the neck portion of the shell.

Abstract: A golf club head comprises a shell of carbon fiber reinforced plastic having a core embedded in the shell, the side and bottom of the shell are covered with a metal sole member including its integral side and sole portions, the core is positioned and retained in said shell by inserting a projection or projections on the sole member into the core and a pocket is provided in the sole member for containing weights to be used for weight adjustment of the head or balance adjustment.

Abstract: A gun for firing a resilient loop projectile, wherein the missile is stretched over a frame and discharged by a firing mechanism movable against the bias of on elastic member on an upwardly and rearwardly directed rectilinear path of travel. A combination plunger and rear sight has a forwardly curved surface to lift the loop upwardly off the firing groove to discharge the missile from the gun. The contour of the gun permits rapid movement of a missile from a ready position to a firing position and admits of the simultaneous loading with two missiles for rapid fire. The gun is constructed in a manner to resemble the feel and firing characteristics of a conventional hand gun. The projectiles for the gun are fabricated from a length of elastic tubing having a flexible polyurethane rod joining the tube ends to close the loop and enhance the firing accuracy and durability of the missile. The projectile is made of high visibility material and is floatable to insure recoverability after firing.

Abstract: A putter having a soft elastomeric striking face is described. The elastomer of the striking face has a hardness of at least 70 Durometer A and a hardness less than the hardness of a golf ball, and a high resiliency with controlled dampening. This hardness permits penetration of a golf ball into the elastomer when a ball is stroked with the elastomeric face, and the resiliency and controlled dampening causes the stroked ball to rebound from the face at a distance at least as great as the distance of the rebound of the ball when the ball is stroked with an equal force with a metal putter head of equal mass. Additionally, the resilient face imparts to the putter an improved sense of touch and feel without sacrificing distance.In FIGS. 1-5 of the drawing different species of the golf clubs of the present invention are disclosed. In FIG. 1 resilient face 6 extends across the front of the club head; in FIG. 2 the resilient face 6 is partially indented in the club head; in FIGS.

Abstract: An improved body-exercising device has a pair of dollies supported for movement along two guideways and permits a user to stand with one foot on each dolly and laterally separate the dollies to exercise the body. Foam pads are affixed to the dollies to receive the user's feet and to afford the freedom of movement necessary to the exercise while also affording control of the dolly. The device further includes an adjustable connection fixing the distance between the guideways and preventing their lateral movement. A compressible rolling surface may be provided on the guideways for use with rollable dollies to increase the rolling resistance encountered by the dollies.

Abstract: A novel structural member, such as a tennis racket, and the method for making same, provides a high strength to weight ratio. The structural member of this invention consists of a fiberglass shell which surrounds a syntactic foam core. The fiberglass shell may be further selectively reinforced with a ribbon which is formed from a high strength fiber such as boron fibers, graphite fibers, aramid fibers, etc. Because the structure of this invention incorporates a high strength to weight ratio it can be utilized in the manufacture of rackets of conventional and radical design.This invention relates to a structural member consisting of a tennis racket having a high strength to weight ratio.