Strings of sport rackets and method for making the same
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United States of America Patent
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Issued Date -
Apr 24, 2008
app pub date -
May 9, 2007
filing date -
Oct 24, 2006
priority date (Note) -
Abandoned
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Abstract
A method for making strings for sport rackets includes a step of extruding two wires of different materials and a step of twining the two wires along an axis to form a string. The string includes a core wire of a first material and a sun-wire of a second material is twined to the core wire. No acid-wash is needed and the two steps can be completed within one machine.
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