Abstract: A hollow monofilament of a high temperature spinnable thermoplastic such as Polyetheretherketone (PEEK) which is substantially hollow by up to about 80% by volume and has an outer diameter in the range from about 0.07 to 0.80 mm. is used in the construction of braiding in substitution for solid monofilaments with the advantage of lower cost and increased abrasion resistance.
Type:
Grant
Filed:
May 26, 1998
Date of Patent:
October 17, 2000
Assignee:
Zyex Limited
Inventors:
Bruce Murray McIntosh, Noel Anthony Briscoe, Kevin James Artus
Abstract: A string for a musical instrument comprises a thermoplastic aromatic polyetherketone and has a value of E/.rho..sup.2 which is not greater than 5.times.10.sup.3, where E is Young's modulus of the string material measured in N/m.sup.2 and .rho. is the density of the string material measured in kg/m.sup.3. Such a musical instrument string may have significantly lower internal damping than previously available strings, may show low inharmonicity, and may be unaffected by ambient humidity changes.
Type:
Grant
Filed:
October 10, 1995
Date of Patent:
December 24, 1996
Assignee:
Zyex Limited
Inventors:
Bruce M. McIntosh, Francis S. Smith, Noel A. Briscoe