Patents Examined by Deborah Lamblin
  • Patent number: 5327714
    Abstract: 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.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: July 12, 1994
    Assignee: Prince Manufacturing, Inc.
    Inventors: Kenneth A. Stevens, David T. Holland