Patents by Inventor Donald A. Dykstra

Donald A. Dykstra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Musical instrument string with auto wound cover wire
    Patent number: 6465721
    Abstract: The improved musical string includes a prior art core wire assembly including a core wire and a terminal end. The cover wire has an end portion that is bent around the terminal end portion of the core wire, and the cover wire is then wound the core wire to form the musical string. The improved cover wire winding machine includes a headstock with a rotatable spindle and a core wire terminal end mounting hook. A cover wire mounting sleeve is slidably and rotatably engaged to the spindle and functions to mechanically engage an end of the cover wire and to bend it into engagement with the core wire terminal end following engagement, the cover wire is wound around the core wire to produce the improved musical string.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: October 15, 2002
    Inventors: Jeffrey E. Landtroop, Donald A. Dykstra
  • Guitar string manufacturing auto start winding process
    Publication number: 20010039722
    Abstract: The improved musical string includes a prior art core wire assembly including a core wire and a terminal end. The cover wire has an end portion that is bent around the terminal end portion of the core wire, and the cover wire is then wound the core wire to form the musical string. The improved cover wire winding machine includes a headstock with a rotatable spindle and a core wire terminal end mounting hook. A cover wire mounting sleeve is slidably and rotatably engaged to the spindle and functions to mechanically engage an end of the cover wire and to bend it into engagement with the core wire terminal end following engagement, the cover wire is wound around the core wire to produce the improved musical string.
    Type: Application
    Filed: June 18, 2001
    Publication date: November 15, 2001
    Inventors: Jeffrey E. Landtroop, Donald A. Dykstra
  • Guitar string manufacturing auto start winding process
    Patent number: 6256872
    Abstract: The improved musical string includes a prior art core wire assembly including a core wire and a terminal end. The cover wire has an end portion that is bent around the terminal end portion of the core wire, and the cover wire is then wound the core wire to form the musical string. The improved cover wire winding machine includes a headstock with a rotatable spindle and a core wire terminal end mounting hook. A cover wire mounting sleeve is slidably and rotatably engaged to the spindle and functions to mechanically engage an end of the cover wire and to bend it into engagement with the core wire terminal end following engagement, the cover wire is wound around the core wire to produce the improved musical string.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: July 10, 2001
    Inventors: Jeffrey E. Landtroop, Donald A. Dykstra