Abstract: The present invention relates to a grommet and a grommet strip for a ball game racket as well as to a specific ball game racket for receiving the grommet according to the invention or the grommet strip according to the invention.

Abstract: The present invention relates to a grommet and a grommet strip for a ball game racket as well as to a specific ball game racket for receiving the grommet according to the invention or the grommet strip according to the invention.

Abstract: The invention relates to a frame for a ball game racket comprising a handle region and a head region with a bridge, wherein a part of the head region and/or the handle region comprise(s) a carbon fiber composite material and wherein the bridge comprises magnesium and is formed as one part.

Abstract: The present invention relates to a ball game racket, a method for adjusting the length of the handle portion of a ball game racket and a handle shell for the handle portion of a ball game racket.

Abstract: The present invention relates to a ball game racket with strings that comprise at least one string comprising a superelastic material.

Abstract: The invention relates to a bridge for a ball game racket as well as to a frame for a ball game racket comprising a bridge.

Abstract: The present invention relates to a ball game racket, a method for adjusting the length of the handle portion of a ball game racket and a handle shell for the handle portion of a ball game racket.

Abstract: The present invention relates to a grommet strip for a racket for ball games, wherein the grommet strip comprises a longitudinal direction and a plurality of grommets 1 comprising grommet through-holes 2, wherein each of the grommets 1 defines a grommet axis A and each of the grommet through-holes 2 defines a hole axis B, wherein the grommet axes A and the hole axes B extend substantially parallel to each other and wherein the hole axes B of some grommets are offset with respect to the grommet axes A thereof in the longitudinal direction of the grommet strip.

Abstract: The invention relates to a frame for a ball game racket comprising a handle region and a head region with a bridge, wherein a part of the head region and/or the handle region comprise(s) a carbon fiber composite material and wherein the bridge comprises magnesium and is formed as one part.

Abstract: The invention relates to a bridge for a ball game racket as well as to a frame for a ball game racket comprising a bridge.

Abstract: The present invention relates to a ball game racket with strings that comprise at least one string comprising a superelastic material.

Abstract: A racket may include a frame including at least one prepreg layer. The at least one prepreg layer may include reinforcing fibers. The at least one prepreg layer may also include a matrix at least partially surrounding the reinforcing fibers. The at least one prepreg layer may also include graphene material.

Abstract: The present invention relates to a frame for a ball-game racket comprising a head portion and a handle portion, wherein the frame is configured as a hollow profile and comprises magnesium and wherein the wall thickness of the hollow profile varies along a cross-section through the hollow frame profile, as well as to a process for producing such a racket.

Abstract: The present invention is directed to a method for determining at least one first coordinate of the hitting point of an object on the surface of an article.

Abstract: A racket assembly may include a racket, and at least one sensor operatively coupled to the racket. The at least one sensor may be configured to generate a signal indicative of at least one parameter related to use of the racket. The racket assembly may also include a processor configured to receive the signal as an input and generate an output based on the signal.

Abstract: The present invention relates to a racket for ball games comprising a frame forming a head portion and a handle portion, wherein the head portion accommodates a string bed comprising strings and defining a string plane, wherein the strings of the string bed are passed through several holes in the head portion, wherein at least three strings are passed through three of said holes in such a way that the longitudinal axis of each of said three holes extends in a first direction and the string passed through the hole extends within the string bed in a second direction, wherein the first and the second direction include an angle having an absolute value between 0.5° and 15° and wherein the absolute values of the angles of these three strings differ by maximally 3°.

Abstract: The present invention relates to a racket for ball games having a frame comprising a head portion for receiving a stringing and a handle portion for gripping the racket, wherein the frame comprises at least one transparent or translucent portion formed from a transparent or translucent material, said transparent or translucent portion being integrally bonded to the remaining frame. Furthermore, a method for manufacturing such a racket is described.

Abstract: A tennis racket may include a handle with a butt end, and a head configured to support strings. The tennis racket may also include a throat connecting the handle and the head, wherein the racket may have a Power Maneuverability Ratio from about 4500 to about 7915, the Power Maneuverability Ratio governed by the equation: PMR= ( S ? ? W ) ? ( R ? ? W ) ( P ? ? U ? ? W ) , where SW=the moment of inertia in kilogram-centimeters squared of the tennis racket about a swingweight axis that is perpendicular to a longitudinal axis of the tennis racket, parallel to a tennis ball hitting surface contained by the head, and intersecting a point on the handle that is four inches from the butt end along the longitudinal axis, R ? ? W = S ? ? W - ( W ? ? t 1000 ) ? ( b 10 - 10.16 ) 2 , Wt=the weight of the racket in grams, b=the distance in millimeters between a center of gravity of the racket to the butt end.

Abstract: A racket may include a frame including at least one prepreg layer. The at least one prepreg layer may include reinforcing fibers. The at least one prepreg layer may also include a matrix at least partially surrounding the reinforcing fibers. The at least one prepreg layer may also include graphene material.

Abstract: A tennis racket may include a handle with a butt end, and a head configured to support strings. The tennis racket may also include a throat connecting the handle and the head, wherein the racket may have a Power Maneuverability Ratio from about 4500 to about 7915, the Power Maneuverability Ratio governed by the equation: P ? ? M ? ? R = ( SW ) ? ( RW ) ( PUW ) , where SW=the moment of inertia in kilogram-centimeters squared of the tennis racket about a swingweight axis that is perpendicular to a longitudinal axis of the tennis racket, parallel to a tennis ball hitting surface contained by the head, and intersecting a point on the handle that is four inches from the butt end along the longitudinal axis, RW = RW - ( Wt 1000 ) ? ( b 10 - 10.16 ) 2 , Wt=the weight of the racket in grams, b=the distance in millimeters between a center of gravity of the racket to the butt end.