Abstract: The present invention relates to a method for manufacturing at least a portion of a sports racquet frame that comprises a step a) of providing a moldable tube structure containing a first inflatable bladder and a second inflatable bladder. The first and second inflatable bladders are positioned on opposite first and second regions of the moldable tube structure. At an intermediate region, the tube structure comprises one or more cross channels, which pass through the moldable tube structure. The method according to the present invention comprises also a further step b) of inserting said tube structure inside a mold forming a mold cavity of a desired shape. Mold members are inserted into the cross channels of the tube structure, so that the outer surface of the mold member faces the inner surface of the corresponding cross channel.

Abstract: A sports stick structure (10) comprising a handle (12) and a striking end (34) adapted to contact and propel an object The handle comprises a hollow tube having one or more ports (58) extending through opposite faces of said hollow tube. Each port is defined at partially by internal walls formed at the opposite faces of said hollow tube.

Abstract: A handle is adapted to be held by a player and a striking end is adapted to contact and propel an object. A structure for a hockey stick is described by using a single, hollow tube of composite material, wherein tubular “ports” extend through the hollow tube. The ends of the ports are bonded to the walls of the hollow tube. The ports improve the stiffness, strength, aerodynamics and comfort of the hockey stick.

Abstract: A handle end is adapted to be held by a player and a striking end is adapted to contact and propel an object. The stick includes a shaft coupling the handle end and the striking end. The shaft is fabricated of a relatively rigid material with limited flexibility. The shaft has a hole extending there through with a cylindrical wall defining the hole for varying the playing characteristics of the system.

Abstract: A structure for a bicycle frame system is described by using multiple composite tubes bonded to one another, wherein apertures, or “ports,” are molded between the tubes to improve the stiffness, strength, aerodynamics and comfort of bicycle frame component.

Abstract: A bat preferably is formed of a single, hollow tube of composite material, wherein tubular “ports” extend through the hollow tube. The ends of the ports are bonded to the walls of the hollow tube. The ports improve the stiffness, strength, aerodynamics and comfort of the bat.

Abstract: A fishing rod system comprising multiple composite tubes bonded to one another, wherein apertures, or “ports,” are molded between the tubes to improve the stiffness, strength, aerodynamics, comfort and appearance of the fishing rod.

Abstract: A sports racquet frame is formed from a plurality of frame sections, some sections formed of a single tubular member and other sections formed of double tubular members. The double tube sections preferably contain string port holes. Also, different frame sections can be made of different materials, e.g., carbon fiber-reinforced composites and aluminum.

Abstract: An archery bow is formed of multiple composite tubes bonded to one another along a common wall, wherein apertures, or “ports,” are molded between the tubes to improve the stiffness, strength, resiliency, control, and aerodynamics of the bow.

Abstract: A racquet frame has one or more string holes formed therein and a string bed plane, along which the string holes extend. The racquet frame is preferably formed by providing a frame bearing structure, which is aimed at providing flexural stiffness to said racquet frame, and structurally integrating the frame bearing structure with a frame binding structure, which is aimed at providing torsional stiffness to the racquet frame. The mutual integration of the frame bearing structure and the frame binding structure forms a composite frame structure, in which one or more of said string holes may be provided.

Abstract: A method of manufacturing a structure using a single, hollow primary tube, preferably of a composite material, wherein ports are bonded to the walls of the hollow tube through aligned holes on opposite sides of the hollow tube. The ports improve the stiffness, strength, aerodynamics, and aesthetics of the structure.

Abstract: A drumstick is formed of multiple composite tubes bonded to one another along a common wall, wherein apertures are molded between the tubes to improve the stiffness, strength, resiliency, aerodynamics and comfort of the drumstick.

Abstract: A fishing rod has a single, hollow, primary tube, preferably of composite material, wherein one or more open ports extend through aligned holes on opposite sides of the hollow tube. The ends of the ports are bonded to the walls of the hollow tube. The ports improve the stiffness, strength, aerodynamics, and aesthetics of the fishing rod.

Abstract: The sides of a sports racquet, and optionally the tip and throat bridge, include axially extending cutout portions. An insert member, having a plurality of string port holes and optionally conventional string holes, is seated in each cutout portion. The frame and insert member are preferably formed of different materials.

Abstract: The sides of a sports racquet, and optionally the tip and throat bridge, include axially extending cutout portions. An insert member, having a plurality of string port holes and optionally conventional string holes, is seated in each cutout portion. The frame and insert member are preferably formed of different materials.

Abstract: A sports racquet has a plurality of opposed string holes for anchoring the ends of the strings, at least one pair of contiguous string holes are replaced with an enlarged string hole having opposed bearing surfaces for securing the ends of a pair of contiguous string segments. Preferably, a plurality of contiguous enlarged string holes are employed along the sides, tip, and heel or throat bridge of the racquet, in order to reduce the weight of the racquet head. Also, preferably, the enlarged string holes are defined by a pair of opposed interior walls of the frame extending between the frame's inner and outer surfaces, thereby forming a truss-like internal structure for stiffening the frame. Moreover, the frame preferably has interior wall portions that extend between the string holes. Such wall portions lie in the string bed plane and underlie the string portions on the exterior of the frame.

Abstract: A handle is adapted to be held by a player and a striking end is adapted to contact and propel an object A structure for a hockey stick is described by using a single, hollow tube of composite material, wherein tubular “ports” extend through the hollow tube. The ends of the ports are bonded to the walls of the hollow tube. The ports improve the stiffness, strength, aerodynamics and comfort of the hockey stick.

Abstract: A handle end is adapted to be held by a player and a striking end is adapted to contact and propel an object. The stick includes a shaft coupling the handle end and the striking end. The shaft is fabricated of a relatively rigid material with limited flexibility. The shaft has a hole extending there through with a cylindrical wall defining the hole for varying the playing characteristics of the system.