Strings for musical instruments

• US 5,907,113 A
• Filed: 12/20/1996
• Issued: 05/25/1999
• Est. Priority Date: 11/22/1995
• Status: Expired due to Term

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Myers, David J., Hebestreit, Charles G.
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Fletcher, Marlon T.
• Application Number:
  US08/772,664
• Time in Patent Office: 886 Days
• Field of Search: 84/199, 84/297 S, 84/297 R
• US Class Current: 84/297.00R
• CPC Class Codes: G10D 3/10 Strings

Abstract

An improved musical instrument string is provided. The string includes a polymer cover that protects the string, from contamination while maintaining the original "lively" sound of the musical string. By supplying the cover over a conventional string and preferable over a conventional wound string, the string is protected against contamination while also making the string easier to play. The preferred cover comprises at least one layer of expanded polytetrafluoroethylene (ePTFE) that is most preferably sealed with a polymer coating. In particularly preferred embodiments, a cover is applied over a portion of the length of the string having a relatively reduced variable mass. The result is that the string has relatively uniform mass along its entire length thereby assuring correct intonation.

Claims

1. A musical instrument string made through a process comprising

providing a wound string comprising a metal;

placing a cover over at least a portion of the wound metal string to form a covered string;

heating the covered wound string in an environment having a sufficiently low concentration of oxygen so as not to support combustion so as to produce a covered wound musical instrument string with little oxidation and discolorization under the cover.

2. The musical instrument string made in accordance with claim 1 that further comprises forming the cover with at least one layer of polymer material.

3. The musical instrument string made in accordance with claim 2 that further comprises covering the string with a polymer material comprising polytetrafluoroethylene.

4. The musical instrument string made in accordance with claim 3 that further comprises providing the polytetrafluoroethylene as a polytetrafluoroethylene having a microstructure of oriented fibrils.

5. The musical instrument string made in accordance with claim 1 that further comprises heating the string in an environment having increased concentration of inert gas.

6. The musical instrument string made in accordance with claim 5 that further comprises providing nitrogen as at least a portion of the inert gas.

7. The musical instrument string made in accordance with claim 1 that further comprises forming the cover with at least one layer of polymer material.

8. The musical instrument string made in accordance with claim 7 that further comprises covering the string with a polymer material comprising polytetrafluoroethylene.

9. The musical instrument string made in accordance with claim 8 that further comprises providing the polytetrafluoroethylene as a polytetrafluoroethylene having a microstructure of oriented fibrils.

10. The musical instrument string made in accordance with claim 1 that further comprises

heating the covered string in the environment including an inert gas.

11. The musical instrument string made in accordance with claim 1 that further comprises providing a cover that is substantially non-dampening.

12. The musical instrument string made in accordance with claim 1 that further comprises the string having a longitudinal axis and providing a cover that is deformable along the longitudinal axis of the string.

13. The musical instrument string made in accordance with claim 1 that further comprises heating the string in an environment of inert gas.

14. A musical instrument string made through the process comprising

providing a string having a length and comprising a metal;

covering the string with a polymeric cover to form a covered string; and

heating the covered string in an environment having a sufficiently low concentration of oxygen so as not to support combustion so as to produce a musical instrument string along its length following heating.

15. The musical instrument string made in accordance with claim 14 that further comprises providing nitrogen as at least a portion of the inert gas.

16. The musical instrument string made in accordance with claim 14 that further comprises providing a cover over only a portion of the string prior to heating and whereby the musical instrument string has a surface with little oxidation and discolorization on an uncovered portion and under the cover following heating.

17. The musical instrument string made in accordance with claim 16 that further comprises providing a cover that is substantially non-dampening.

18. The musical instrument string made in accordance with claim 16 that further comprises the string having a longitudinal axis and providing a cover that is deformable along the longitudinal axis of the string.

19. The musical instrument string made in accordance with claim 16 that further comprises heating the string and cover in an environment having a sufficiently low concentration of oxygen so as not to support combustion.