Abstract: A system and methods for creating a strong game racket using multiple inflation bladders. A strong game racket frame comprising a handle, a throat member coupled to the handle, a bridge portion coupled to the throat member and a head frame couple to the throat member. A method for creating a strong game racket comprising the acts of placing a pre-preg first bladder into a mold cavity shaped like a racket frame, placing various pre-formed members and/or secondary mold members into the cavity, and placing a second and/or third pre-preg bladder into the mold cavity above the first bladder and any pre-formed members and/or secondary mold members. After the mold is configured it is closed, pressurized, and heated so that the strong composite game racket can be cured.

Abstract: An institutional badminton racket including a head and a flexible plastic handle. The head has a metal rim around a shuttlecock striking face, and a neck rigidly secured to the rim, where the neck includes a hollow throat extending from the rim away from the striking face with lateral openings through the throat. The handle connecting end includes a first portion extending into the hollow throat, a second portion surrounding the throat, pin portions extending through the throat lateral openings and integral with the first and second portions, and a pair of wings extending generally in the plane in a lateral direction toward the head and including openings therethrough. A Y-clamp is secured around the handle connecting end and the head rim adjacent the head neck and including pins extending through the wing openings.

Abstract: An institutional badminton racket including a head and a flexible plastic handle. The head has a metal rim around a shuttlecock striking face, and a neck rigidly secured to the rim, where the neck includes a hollow throat extending from the rim away from the striking face with lateral openings through the throat. The handle connecting end includes a first portion extending into the hollow throat, a second portion surrounding the throat, pin portions extending through the throat lateral openings and integral with the first and second portions, and a pair of wings extending generally in the plane in a lateral direction toward the head and including openings therethrough. A Y-clamp is secured around the handle connecting end and the head rim adjacent the head neck and including pins extending through the wing openings.

Abstract: A sports racquet comprises a handle and a frame coupled to the handle. The frame includes an inner portion and an outer portion located substantially opposite the inner portion. The inner portion of the frame include a plurality of undulations that extend towards and away from a ball-hitting surface, the undulations reducing the unintended bunching and wrinkling of material that intermittently forms in the frame during the manufacturing process. The undulations can be varied by location, undulation length, undulation height, and frequency and can be used in racquets made from a variety of materials and methods.

Abstract: An aluminum tennis racket includes a head, a shaft and a handle. The head and the shaft are made of hollow aluminum tubing with a series of ripples. The ripples are defined on a sidewall of the hollow aluminum tubing, and the ripples increase the strength of the head and the shaft so the sidewall is lighter and thinner. The lighter tennis racket helps a player to quick react, and the increased strength allows the player to strike a ball powerfully.

Abstract: An aluminum tennis racket includes a head, a shaft and a handle. The head and the shaft are made of hollow aluminum tubing with a series of ripples. The ripples are defined on a sidewall of the hollow aluminum tubing, and the ripples increase the strength of the head and the shaft so the sidewall is lighter and thinner. The lighter tennis racket helps a player to quick react, and the increased strength allows the player to strike a ball powerfully.

Abstract: A racket of a metal tube combined with fiber material includes a metal frame having a hollow interior and two free ends with sloped end surfaces respectively inserted in with an air-filling tube wrapped around with a carbon fiber layer of a preset thickness, forming a length-preset connecting portion in the metal frame. Then, this metal frame is put in a mold and air is compressed into the air-filling tubes to expand them and at the same time fill up the entire mold chamber and the connecting portion in the metal frame and subsequently thermally solidified in shape, thus obtaining a racket of a metal tube combined with fiber material, possible to reinforce its structure and reducing shock caused by striking balls.

Abstract: A metal racket includes a shock removing member, a frame and a handle. The shock removing member has a fitting hole for a lower end of the frame having two shaft rods to fit through and into a hollow interior of the handle and fixed therein by rivets passing through rivet holes of the handle, the shock removing member and the shaft rods. Thus a shock reducing hollow space is formed between the lower end of the shock removing member and the lower end of the handle, When the racket receives shock in hitting a ball, the shock is firstly buffered by the shock removing member and then reduced by the shock reducing hollow space again.

Abstract: A racket frame of extruded aluminum with a common cross-section along its entire length. The frame has free ends with frame portions adjacent to the free ends shaped parallel with each other to constitute a handle. The frame is shaped in a curved configuration remote from the handle with a central opening therewithin to form a head. The opening has a central axis. The frame is shaped with a transition zone between the head and the handle. The cross-section of the frame is of an exterior closed configuration with a major axis parallel with the central axis and a minor axis perpendicular to the major axis. The cross-section of the frame has two interior ribs spaced from each other to divide the cross-sectional configuration into three linear openings with the ribs being angled equally and oppositely with respect to each other.