Abstract: A grip is described in which longitudinal cavities are formed within the grip. The grip may be used on a golf club or tennis racket. When a golf club or racket strikes a ball, the club or racket undergoes an opposing force. This opposing force may produce various torsional or rotational vibrations within the club or racket. These forces can cause discomfort and damage to joints. The cavities act to permit material between the cavities to deform, preferentially dampening high frequency torsional vibrations and isolating the user. The cavities may also be formed to permit a user to experience low frequency oscillations while preferentially dampening the higher frequency vibrations that cause discomfort and pain. In this manner, users may experience much of the low frequency vibrations that are indicative of striking quality while avoiding discomfort associated with poor striking.

Abstract: A data disk holder for electronic data storage disks such as compact disks (CDs), includes two opposed, generally arcuate planar closure members which are joined together along a base portion by a living hinge. One of the closure members includes a circular flange defining a bore for receiving a boss projecting centrally from the disk support surface of the other closure member, the boss being an interference fit in the bore for securing the closure members together to retain a data disk in the holder. The holder may be injection molded of relatively light weight polypropylene or a similar moldable polymer and may include transverse walls and a double living hinge to provide the jewel box construction and thickness of conventional disk holders.

Abstract: A data disk holder for electronic data storage disks such as compact disks (CDs), includes two opposed, generally arcuate planar closure members which are joined together along a base portion by a living hinge. One of the closure members includes a circular flange defining a bore for receiving a boss projecting centrally from the disk support surface of the other closure member, the boss being an interference fit in the bore for securing the closure members together to retain a data disk in the holder. The holder may be injection molded of relatively light weight polypropylene or a similar moldable polymer and may include transverse walls and a double living hinge to provide the jewel box construction and thickness of conventional disk holders.