To enhance a resilience performance of a ball at hitting the ball, a grommet is configured to include a strip-shaped portion extending in a predetermined direction and a cylindrical portion projecting from one surface of the strip-shaped portion, the cylindrical portion being a portion through which a string passes. A bulge portion is formed on a part on another surface of the strip-shaped portion, the part being along an inner periphery of the cylindrical portion. The bulge portion has a shape bulged more than the other surface of the strip-shaped portion, and the string is folded back at the bulge portion. A plurality of the protrusions are formed between the cylindrical portions adjacent to one another, the plurality of the protrusions being portions to which the string contacts.

A set of racket cross-string guides which are pre-woven over a string guide holder in the same pattern used for inserting the racket cross-strings.

Devices systems and methods are disclosed. Among other things, the devices systems and methods can facilitate ergonomic gripping of a handle; conform to the shape of a wrist; enhance golf techniques or performance; enhance racket sport technique or performance; protect a head of a user engaged in contact sports or other hazardous activities; identify concussions, in some cases in substantially real time; provide sterilization of garments; control surgical robots; allow for medical treatment of multiple subjects without disrobing; provide biometric or other data; and/or be used to train muscles or body parts for, for example, performing specified tasks using a body part.

A sports racquet for supporting at least one racquet string and including a frame and at least one string support assembly. The frame includes handle and head portions separated by throat tubes. The head portion has grommet holes, and includes top, bottom, first side and second side regions. The string support assembly includes a grommet structure and at least one bearing element. The grommet structure includes a strip and at least two barrels extending from the strip. Each barrel includes a string hole extending along an axis of the barrel, and extends through a separate one of the grommet holes. The bearing element is coupled to the grommet structure, and includes an upper portion having a grooved rim engaging the string and a deflectable lower portion having opposing cutouts. The support assembly is positioned at one or more of the top, bottom, first side and second side regions.

An apparatus for stringing a traditional lacrosse pocket, comprising a substantially rectangular and concave shaped pocket form sized to fit inside a lacrosse head, a series of notches running along the longitudinal edges of the pocket form, a series of cutouts running along the longitudinal center of the pocket form, outside runner guides positioned in-between the notches along the longitudinal edges of the pocket form and a pair of middle runner guides positioned in-between each of the cutouts running along the longitudinal center of the pocket form, each of the pair of the pair of middle runner guides positioned on opposite sides of the longitudinal center.

An apparatus for stringing a traditional lacrosse pocket, comprising a substantially rectangular and concave shaped pocket form sized to fit inside a lacrosse head, a series of notches running along the longitudinal edges of the pocket form, a series of cutouts running along the longitudinal center of the pocket form, outside runner guides positioned in-between the notches along the longitudinal edges of the pocket form and a pair of middle runner guides positioned in-between each of the cutouts running along the longitudinal center of the pocket form, each of the pair of the pair of middle runner guides positioned on opposite sides of the longitudinal center.

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.

This is an improvement or change in tennis racket's strings position from the middle of the racket frame to the side of the tennis racket frame. An improvement in tennis racket to allow the player to create more and faster ball spins and to reduce errors in the game. A tennis racket with strings on both the sides of the frame, or only on one side of the tennis racket frame is my invention.

If not acceptable to the tennis authorities or player, a tennis racket frame with cross section diamond shape to allow the manufacturer to make the smallest possible size of tennis racket frame, so that players can create more and faster ball spins and reduce errors in their games.

This is an improvement or change in tennis racket's strings position from the middle of the racket frame to the side of the tennis racket frame. An improvement in tennis racket to allow the player to create more and faster ball spins and to reduce errors in the game. A tennis racket with strings on both the sides of the frame, or only on one side of the tennis racket frame is my invention.

If not acceptable to the tennis authorities or player, a tennis racket frame with cross section diamond shape to allow the manufacturer to make the smallest possible size of tennis racket frame, so that players can create more and faster ball spins and reduce errors in their games.

A solution is provided to enhance motion detection and recognition of moving objects associated with various sports by embedding motion sensors into sports instruments such as tennis rackets, badminton rackets, baseball bats and golf clubs, that are swung in a three-dimensional (3D) space. A motion sensor device inserted and locked inside a sports instrument is configured to detect motions associated with movements associated with the sports instrument. The device is shaped to be inserted into a sensor housing attached to a selected location inside the sports instrument. The device includes a motion sensor for detecting motion associated with the movement of the sports instrument, a cover for protecting the motion sensor, and a locking mechanism attached to the sensor housing for locking the motion sensor inside the sensor housing.