Abstract: A racket frame, such as for a tennis racket, has a head portion, a handle portion and a throat portion extending between and interconnecting the head and handle portions. The head portion encompasses an open region and has a plurality of stringing holes for attaching stringing to the head portion and across the open region. The throat portion is in the form of a pair of legs in a generally V-shaped configuration. Different cross-sectional dimensional relationships are incorporated in the racket frame to tailor racket frame stiffness. A first cross-sectional dimensional relationship relates to location of the maximum cross-sectional height of the racket frame in a lower extent of the head portion thereof so as to define a dual reverse tapered profile along the cross-sectional height of the racket frame.

Abstract: A racket frame, such as for a tennis racket, has a head portion, a handle portion and a throat portion extending between and interconnecting the head and handle portions. The head portion encompasses an open region and has a first plurality of stringing holes for attaching stringing to the head portion and across the open region. The throat portion is in the form of a pair of legs in a generally V-shaped configuration. The frame also includes a second plurality of non-stringing holes defined in one or both of the head and throat portions for forming voids in the material thereof to reduce the weight and tailor the stiffness thereof in a manner which reduces axial and torsional deflections of the head portion upon striking a ball by the stringing across the open region of the head portion.

Abstract: Weight-and-balance adjusting assemblies for use with a racquet for racquet sports. The adjusting assemblies in each case includes a weight having an adhesive formed of an acrylic foam, with very high-bonding properties, secured to its base surface. The unbonded face of the adhesive is secured when an adjusting assembly is in use, secured to a selected part of the racquet. The weight is composed of lead which has a low melting point and is readily moldable to mate with the surface of the part of the racquet to which it is secured or is to be secured. Because of the bonding to the racquet by the adhesive, an adjusting assembly and its weight form an integral part of the racquet. The package includes a card to which a plurality of adjusting assemblies are removably secured. The card carries adjusting assemblies with weights of different magnitudes for the same parts of a racquet and adjusting assemblies for different parts of a racquet.