Prince Manufacturing Corporation

Kenneth A Stevens

Stephen J Davis

David T Holland

A string for sports application, in particular for tennis, badminton, racquetball and squash racquets or the like comprises a center core and at least one ribbon-like wrap made of a highly abrasion resistant material which exhibits a higher melting point and at least one of a higher dynamic stiffness and a lower static stiffness than the core material. A preferred wrap material meeting the above criteria is poly(m-phenylene isophthalamide). The wrap should cover at least 25%, and preferably at least 50% of the center core's outer surface to reduce notching. Due to the reduced notching, superior combined properties of durability, playability and minimal loss of string tension are achieved.

Synthetic string for sporting application

A vibration absorber for tennis racquet strings includes a thin, flexible strip with a relatively massive donut shape member at either end. The device is weaved over and under the racquet main strings, so that the flexible strip contacts preferably between 4 and 6 of the center main strings, and the donut members engage, through a clamping groove, a pair of outlying strings. The device provides a good vibration dampening on the outer part of the string area, for dampening off center hits, whereas the center main strings remain lively and resilient.

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Lansdale, PA, United States of America

Kenneth A Stevens