Head Technology Gmbh

Design Blue Limited

Ralf Schwenger

Stefan Mohr

Harald Rosenkranz

Johan Kotze

Herfried J Lammer

Daniel Lau

Jürgen Wilke

Nathan Elliott

Wolfgang Schlor

Christos Tsangalis

Rob Cottey

Katja Förstner

Caroline Gillet

Gert Rhomberg

The invention relates to a ball game racket frame () including a head portion (), a shaft portion () and a grip portion (). The ball game racket frame () comprises a fiber composite material having fibers embedded in a matrix. At least 5% of the fibers are natural fibers in at least one cross-section () of a portion of the ball game racket frame (). The invention further relates to a ball game racket frame () in which the proportion of natural fibers in at least one cross-section () of the shaft portion () and/or the grip portion (), respectively, is greater than the proportion of natural fibers in at least one cross-section () of the head portion (). The invention further relates to a method for manufacturing such ball game racket frames ().

Ball game racket frame and method for manufacturing a ball game racket

The present invention relates to a method for characterizing a racket head of a ball game racket frame as well as to the representation of a racket head.

Characterization of a ball game racket frame

The present invention relates to a ball game racket frame with a head portion and a handle portion, wherein the ball game racket frame comprises a fiber composite with at least one multi-fiber roving that is at least partially twisted.

Ball game racket frame

The present invention relates to a method for characterizing a string pattern of a ball game racket frame as well as to the representation of a string pattern image of a strung ball game racket frame.

Characterization of a ball game racket string pattern

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.

Grommet and grommet strip for ball game racket

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.

Ball game racket with magnesium bridge

A sports product may include a support member and an impact region configured to impact an object. The impact region may be coupled to the support member. The sports product may also include a shear thickening material in at least one of the support member or the impact region. The shear thickening material may be configured to exhibit shear thickening behavior when an impact occurs between the impact region and the object.

System and method of using shear thickening materials in sports products

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.

Bridge for a ball game racket

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 grommetscomprising grommet through-holes, wherein each of the grommetsdefines a grommet axis A and each of the grommet through-holesdefines 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.

Grommet strip

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&#xb0; and 15&#xb0; and wherein the absolute values of the angles of these three strings differ by maximally 3&#xb0;.

Racket for ball games having sound

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.

Racket

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= 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, 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.

Tennis racket

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.

Methods and apparatuses for enhancing performance in racket sports

The present invention relates to an elastic grip sleeve for the grip of a ball game racket, the sleeve having an inner surface and an outer surface, wherein the inner surface is provided at least in parts with an adhesive strip. The present invention moreover relates to a retrofit kit for a ball game racket, comprising a grip sleeve and at least an adhesive strip. Moreover, according to the invention there is provided a method for attaching a grip sleeve to the grip portion of a ball game racket.

Elastic grip sleeve and grip cap for ball game racket

The invention relates to a racket for ball games, in particular a tennis or squash racket, comprising a head region for receiving a stringing as well as at least one joint which is provided in the head region and the joint axis of which is arranged essentially perpendicularly with respect to a stringing plane formed by the stringing.

Growing community of inventors

Weiler-Simmerberg, Germany

Ralf Schwenger