A pad structure applied to a damping device and a racket frame or a racket frame with a through hole and a string includes a first slider having an end corresponding to the bottom of the damping device or the string or the racket frame and another end having a primary junction, a second slider installed to the other end of the first slider, and an end of the second slider having a secondary junction opposite to the primary junction, and the other end of the second slider being corresponding to the racket frame or the string; the first or second slider being in a trapezium shape and includes a lower level portion at a lower triangle of the first slider or a substrate portion at a lower triangle of the second slider.

The present invention provides a game racquet including an integrated circuit capable of supporting a low-voltage energy current. An embodiment of the invention provides a game racquet including one or more enhancements attached or integrated on the racquet frame. These enhancements may include but are not limited to: one or more LEDs, a sound amplification device, and an electromagnetic vibration emitter. In a further embodiment, the game racquet responds electronically to ball impact on at least one of the strings, and subsequently performs and action or actions including but not limited to making a sound or sounds, triggering lights, triggering LEDs, triggering another type of automation on the racquet such as a vibration emitter within the handle. The game racquet frame comprising at least one string channel in the frame head, bridge, or other area, which houses an actuator responds mechanically to a string movement triggering electronic connection.

The present invention provides a game racquet including an integrated circuit capable of supporting a low-voltage energy current. An embodiment of the invention provides a game racquet including one or more enhancements attached or integrated on the racquet frame. These enhancements may include but are not limited to: one or more LEDs, a sound amplification device, and an electromagnetic vibration emitter. In a further embodiment, the game racquet responds electronically to ball impact on at least one of the strings, and subsequently performs and action or actions including but not limited to making a sound or sounds, triggering lights, triggering LEDs, triggering another type of automation on the racquet such as a vibration emitter within the handle. The game racquet frame comprising at least one string channel in the frame head, bridge, or other area, which houses an actuator responds mechanically to a string movement triggering electronic connection.

Provided is a racket including a head portion connected to a handle portion. The head portion includes a beam including string holes and at least one string looped through the string holes, the racket further includes at least one tensioning device rotatably arranged on a support surface on the exterior surface of the beam relative to which it can be rotated between a first and a second position. The tensioning device includes a through hole arranged parallel and offset to the rotation axis and extending through the tensioning device. The at least one string is looped from a first string hole through the through hole to a second string hole, so that the tension of the at least one string can be varied by rotation of the tensioning device between the first and second position, and where the outer circumference of the tensioning device further includes a mating surface for mating with the support surface. The mating surface extends from a first mating patch which contacts the support surface in the first position to a second mating patch which contacts the support surface in the second position and where the cross section of the mating surface perpendicular to the rotation axis has an arched shape.

Provided is a racket including a head portion connected to a handle portion. The head portion includes a beam including string holes and at least one string looped through the string holes, the racket further includes at least one tensioning device rotatably arranged on a support surface on the exterior surface of the beam relative to which it can be rotated between a first and a second position. The tensioning device includes a through hole arranged parallel and offset to the rotation axis and extending through the tensioning device. The at least one string is looped from a first string hole through the through hole to a second string hole, so that the tension of the at least one string can be varied by rotation of the tensioning device between the first and second position, and where the outer circumference of the tensioning device further includes a mating surface for mating with the support surface. The mating surface extends from a first mating patch which contacts the support surface in the first position to a second mating patch which contacts the support surface in the second position and where the cross section of the mating surface perpendicular to the rotation axis has an arched shape.

The subject disclosure relates to a racket apparatus and method for tuning string tension of the string elements of a racket apparatus. Furthermore, the racket apparatus can be a tunable sport racket in which players can monitor, adjust, and lock a desired string tension without replacing racket strings. In an aspect, the racket apparatus can comprise a throat element through which strings are threaded. Furthermore, the throat element can comprise contact points along an indented track of an outer frame element of the racket apparatus by which a tuning mechanism can be initiated to shift the throat element and adjust a string tension of the racket apparatus.

The subject disclosure relates to a racket apparatus and method for tuning string tension of the string elements of a racket apparatus. Furthermore, the racket apparatus can be a tunable sport racket in which players can monitor, adjust, and lock a desired string tension without replacing racket strings. In an aspect, the racket apparatus can comprise a throat element through which strings are threaded. Furthermore, the throat element can comprise contact points along an indented track of an outer frame element of the racket apparatus by which a tuning mechanism can be initiated to shift the throat element and adjust a string tension of the racket apparatus.

Provided is a racket including a head portion connected to a handle portion. The head portion includes a beam including string holes and at least one string looped through the string holes, the racket further includes at least one tensioning device rotatably arranged on a support surface on the exterior surface of the beam relative to which it can be rotated between a first and a second position. The tensioning device includes a through hole arranged parallel and offset to the rotation axis and extending through the tensioning device. The at least one string is looped from a first string hole through the through hole to a second string hole, so that the tension of the at least one string can be varied by rotation of the tensioning device between the first and second position, and where the outer circumference of the tensioning device further includes a mating surface for mating with the support surface. The mating surface extends from a first mating patch which contacts the support surface in the first position to a second mating patch which contacts the support surface in the second position and where the cross section of the mating surface perpendicular to the rotation axis has an arched shape.

Provided is a racket including a head portion connected to a handle portion. The head portion includes a beam including string holes and at least one string looped through the string holes, the racket further includes at least one tensioning device rotatably arranged on a support surface on the exterior surface of the beam relative to which it can be rotated between a first and a second position. The tensioning device includes a through hole arranged parallel and offset to the rotation axis and extending through the tensioning device. The at least one string is looped from a first string hole through the through hole to a second string hole, so that the tension of the at least one string can be varied by rotation of the tensioning device between the first and second position, and where the outer circumference of the tensioning device further includes a mating surface for mating with the support surface. The mating surface extends from a first mating patch which contacts the support surface in the first position to a second mating patch which contacts the support surface in the second position and where the cross section of the mating surface perpendicular to the rotation axis has an arched shape.

Performance of a racket can be adjusted. A racket includes a grip, an annular frame that is provided with a plurality of through holes that penetrate from an inner circumferential face to an outer circumferential face, and a shaft that connects the grip and the frame in a shaft axis direction, the frame having a rear end side attachment part, on the outer circumferential face of the frame and on a side closer to the shaft in the shaft axis direction, where there is mounted a rear end side attachment to which a string tensely provided to the frame is routed, and the rear end side attachment being made of a material different from the frame.