The present invention is directed to a racquet design with an inner and outer frame connected by an isolation system. Uniquely adapted to tennis racquets, the natural motion of the inner frame relative to the outer frame upon impact of the tennis ball on the inner frame will generate spin when the ball contacts the inner frame. The relationship between the inner frame, outer frame and isolation system can control the spin imparted to the ball for a given tennis swing. The tuning of the isolators relative to conventional racquet characteristics will increase the amount of ball spin caused by conventional racquets. The invention also increases the accuracy of the tennis ball's trajectory.

A tennis racket with a more-responsive string configuration is an apparatus that allows a user to hit a tennis ball with spin and power in a controlled manner. The apparatus includes a closed-shape beam, a throat, an elongated handle, and a plurality of lines. The elongated handle allows the user to firmly grasp the apparatus, and the throat connects the elongated handle to the closed-shape beam. The plurality of lines is tensionably mounted within the closed-shape beam in order to provide the present invention with an elastic contact area for the tennis ball. Each of the plurality of lines includes a first string and a second string, which are positioned along each other for each of the plurality of lines. In addition, a lateral surface of the first string is positioned tangent to a lateral surface of the second string.

A tennis racket with a more-responsive string configuration is an apparatus that allows a user to hit a tennis ball with spin and power in a controlled manner. The apparatus includes a closed-shape beam, a throat, an elongated handle, and a plurality of lines. The elongated handle allows the user to firmly grasp the apparatus, and the throat connects the elongated handle to the closed-shape beam. The plurality of lines is tensionably mounted within the closed-shape beam in order to provide the present invention with an elastic contact area for the tennis ball. Each of the plurality of lines includes a first string and a second string, which are positioned along each other for each of the plurality of lines. In addition, a lateral surface of the first string is positioned tangent to a lateral surface of the second string.

The present invention relates to a ball-striking device (1), in particular a tennis, squash, or badminton racket, having a head frame (2), which comprises a striking surface, is of a hollow design, and is produced from plastic, in particular from a fiber-reinforced plastic, and a shaft formed thereon with grip, wherein the striking surface (12) is defined by at least one string (8), which is tensioned in a crisscross manner and which forms string portions fastened substantially in parallel to one another on the head frame, wherein the anchoring of the string portions on the head frame (2) is performed via retainers (20) which are fastened on the inner side of the head frame so that they each extend substantially perpendicularly in relation to the striking surface, whereby the ends (10) of the string portions clamped in the retainers (20) can be laterally deflected upon impact of a ball. With the goal of specifying such a ball-striking device and a method for the production thereof, in which the anchoring of the string portions on the head frame is performed via retainers which may be arranged precisely and easily in the head frame and are also suitable for a mass production method, it is provided that the retainers (20) are open toward one of the two sides of the striking surface (12) and/or are freely accessible from one of the two sides of the striking surface (12) for clamping the string which defines the striking surface.

The present invention relates to a ball-striking device (1), in particular a tennis, squash, or badminton racket, having a head frame (2), which comprises a striking surface, is of a hollow design, and is produced from plastic, in particular from a fiber-reinforced plastic, and a shaft formed thereon with grip, wherein the striking surface (12) is defined by at least one string (8), which is tensioned in a crisscross manner and which forms string portions fastened substantially in parallel to one another on the head frame, wherein the anchoring of the string portions on the head frame (2) is performed via retainers (20) which are fastened on the inner side of the head frame so that they each extend substantially perpendicularly in relation to the striking surface, whereby the ends (10) of the string portions clamped in the retainers (20) can be laterally deflected upon impact of a ball. With the goal of specifying such a ball-striking device and a method for the production thereof, in which the anchoring of the string portions on the head frame is performed via retainers which may be arranged precisely and easily in the head frame and are also suitable for a mass production method, it is provided that the retainers (20) are open toward one of the two sides of the striking surface (12) and/or are freely accessible from one of the two sides of the striking surface (12) for clamping the string which defines the striking surface.

A racquet extending along a longitudinal axis and including a frame including a head portion, a handle portion, and a throat portion. The head portion forms a hoop that defines a string bed plane. At least the head portion and the throat portion of the frame are formed at least in part of a fiber composite material. When the racquet is tested under the racquet lateral bending test, the racquet has a lateral deflection of at least 6.0 mm when measured in a direction that is parallel to the string bed plane and perpendicular to the longitudinal axis. When the racquet is tested under the racquet torsional stability test, the racquet has an angular deflection of less than 5.5 degrees about the longitudinal axis. The head portion has a maximum beam height distance of at least 20 mm.

A racquet extending along a longitudinal axis and including a frame including a head portion, a handle portion, and a throat portion. The head portion forms a hoop that defines a string bed plane. At least the head portion and the throat portion of the frame are formed at least in part of a fiber composite material. When the racquet is tested under the racquet lateral bending test, the racquet has a lateral deflection of at least 6.0 mm when measured in a direction that is parallel to the string bed plane and perpendicular to the longitudinal axis. When the racquet is tested under the racquet torsional stability test, the racquet has an angular deflection of less than 5.5 degrees about the longitudinal axis. The head portion has a maximum beam height distance of at least 20 mm.