An automatically braking tensioner for a racket stringing machine is disclosed. The tensioner comprises a tensioner housing, a drum connected to the tensioner housing, a string gripper connected to the drum, a disk brake having an axle extending from an axis of the disc brake, a lever disposed in the tensioner housing, and a brake lever disposed in the tensioner housing. The disk brake is connected to a stringing machine body and is rotably stationary relative to the stringing machine body. As the tensioner is rotated about the disk brake, the brake lever is engaged with the disk brake when the tensioning force is equal to a desired force which can be established my means of a compression spring. In some embodiments the tension can be altered by varying the tension or position of the spring.

A dual tension racket string tensioning system and methods for implementing the same are disclosed. Embodiments of the disclosure include a tensioner equipped with two or more receptacles to releasably grip two or more portions of string simultaneously, and simultaneously apply a force at each portion of the string held in the receptacles. Embodiments of the present disclosure include a turntable rotatably coupled to a base structure, a mounting support adjustably coupled to the turntable (the mounting support configured to receive and hold a racket), and a dual tensioner, as disclosed herein, coupled with the base and operable to apply force (1) at a first portion of the string via the first receptacle; and (2) at a second portion of the string via the second receptacle. Some embodiments further include a stationary dual-string clamp. Further embodiments include a gear dial for fine tuning the force applied to the string portions. And still further embodiments employ a frequency meter to measure the frequency/pitch/tension of individual string segments throughout the stringing process.

A dual tension racket string tensioning system and methods for implementing the same are disclosed. Embodiments of the disclosure include a tensioner equipped with two or more receptacles to releasably grip two or more portions of string simultaneously, and simultaneously apply a force at each portion of the string held in the receptacles. Embodiments of the present disclosure include a turntable rotatably coupled to a base structure, a mounting support adjustably coupled to the turntable (the mounting support configured to receive and hold a racket), and a dual tensioner, as disclosed herein, coupled with the base and operable to apply force (1) at a first portion of the string via the first receptacle; and (2) at a second portion of the string via the second receptacle. Some embodiments further include a stationary dual-string clamp. Further embodiments include a gear dial for fine tuning the force applied to the string portions. And still further embodiments employ a frequency meter to measure the frequency/pitch/tension of individual string segments throughout the stringing process.

A dual tension racket string tensioning system and methods for implementing the same are disclosed. Embodiments of the disclosure include a tensioner equipped with two or more receptacles to releasably grip two or more portions of string simultaneously, and simultaneously apply a force at each portion of the string held in the receptacles. Embodiments of the present disclosure include a turntable rotatably coupled to a base structure, a mounting support adjustably coupled to the turntable (the mounting support configured to receive and hold a racket), and a dual tensioner, as disclosed herein, coupled with the base and operable to apply force (1) at a first portion of the string via the first receptacle; and (2) at a second portion of the string via the second receptacle. Some embodiments further include a stationary dual-string clamp. Further embodiments include a gear dial for fine tuning the force applied to the string portions. And still further embodiments employ a frequency meter to measure the frequency/pitch/tension of individual string segments throughout the stringing process.

A dual tension racket string tensioning system and methods for implementing the same are disclosed. Embodiments of the disclosure include a tensioner equipped with two or more receptacles to releasably grip two or more portions of string simultaneously, and simultaneously apply a force at each portion of the string held in the receptacles. Embodiments of the present disclosure include a turntable rotatably coupled to a base structure, a mounting support adjustably coupled to the turntable (the mounting support configured to receive and hold a racket), and a dual tensioner, as disclosed herein, coupled with the base and operable to apply force (1) at a first portion of the string via the first receptacle; and (2) at a second portion of the string via the second receptacle. Some embodiments further include a stationary dual-string clamp. Further embodiments include a gear dial for fine tuning the force applied to the string portions. And still further embodiments employ a frequency meter to measure the frequency/pitch/tension of individual string segments throughout the stringing process.

A device is provided for stringing a racket having a racket frame with holes in the racket frame. The device includes a frame and a cradle rotationally coupled to the frame and configured to mechanically secure the racket via the racket frame. The device also includes multiple elements coupled to at least one of the frame and cradle, including a grasping element configured to engage a string and modify the position and/or tension of the string, a clamp configured to engage the string and maintain the position and tension of the string, an imagining device, and a processor, the processor capable of receiving information from the imaging device indicative of a racket position, hole position, and/or string position, and providing instructions for operating the grasping element, clamp, and/or cradle.

A device is provided for stringing a racket having a racket frame with holes in the racket frame. The device includes a frame and a cradle rotationally coupled to the frame and configured to mechanically secure the racket via the racket frame. The device also includes multiple elements coupled to at least one of the frame and cradle, including a grasping element configured to engage a string and modify the position and/or tension of the string, a clamp configured to engage the string and maintain the position and tension of the string, an imagining device, and a processor, the processor capable of receiving information from the imaging device indicative of a racket position, hole position, and/or string position, and providing instructions for operating the grasping element, clamp, and/or cradle.

This system (S) for tensioning a racket string (C) comprises a traction module (1) suitable for exerting a traction force (T) on a string (C) of a racket, including a grip (3) comprising two opposite jaws (32) suitable for gripping the string (C) between them when it is tensioned, and a traction head (5) on which the grip (3) is mounted, the jaws (32) being translatable simultaneously relative to the traction head (5) and arranged such that the translation of the jaws (32) causes them to tighten around the string (C), a rail (7) on which the traction head (5) of the traction module (1) is mounted translatably, and a traction motor able to translate the traction head (5) of the traction module (1) on the rail (7), via a driving system (13). The system comprises means (15) for transmitting movement between the driving system (13) of the traction head (5) and the jaws (32), this transmission means being able to initiate the translation of the jaws (32) relative to the traction head (5) in the direction gripping the string (C).

This system (S) for tensioning a racket string (C) comprises a traction module (1) suitable for exerting a traction force (T) on a string (C) of a racket, including a grip (3) comprising two opposite jaws (32) suitable for gripping the string (C) between them when it is tensioned, and a traction head (5) on which the grip (3) is mounted, the jaws (32) being translatable simultaneously relative to the traction head (5) and arranged such that the translation of the jaws (32) causes them to tighten around the string (C), a rail (7) on which the traction head (5) of the traction module (1) is mounted translatably, and a traction motor able to translate the traction head (5) of the traction module (1) on the rail (7), via a driving system (13). The system comprises means (15) for transmitting movement between the driving system (13) of the traction head (5) and the jaws (32), this transmission means being able to initiate the translation of the jaws (32) relative to the traction head (5) in the direction gripping the string (C).