Patents by Inventor Jeffrey E. Landtroop

Jeffrey E. Landtroop 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).

  • Patent number: 8283539
    Abstract: A musical instrument string with hyper elliptical wound cover wire includes a wound musical string assembly (10) having a center string (12) and a shaped cover wire (24) wrapped in a spiral winding pattern (18). The shaped cover wire (24) is shaped to have a wire height (30) which is greater than a wire width (32) and is wound such that the wire height (30) is aligned perpendicularly to the longitudinal axis (14) of the center string (12) while the wire sides (26) abut tightly against those of adjacent iterations (20). The shaped cover wire (24) is shaped during the winding process by passing between pinch rollers (38) while under extrusion pressure.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: October 9, 2012
    Inventor: Jeffrey E. Landtroop
  • Publication number: 20110005365
    Abstract: A musical instrument string with hyper elliptical wound cover wire includes a wound musical string assembly (10) having a center string (12) and a shaped cover wire (24) wrapped in a spiral winding pattern (18). The shaped cover wire (24) is shaped to have a wire height (30) which is greater than a wire width (32) and is wound such that the wire height (30) is aligned perpendicularly to the longitudinal axis (14) of the center string (12) while the wire sides (26) abut tightly against those of adjacent iterations (20). The shaped cover wire (24) is shaped during the winding process by passing between pinch rollers (38) while under extrusion pressure.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 13, 2011
    Inventor: Jeffrey E. Landtroop
  • 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
  • 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
  • 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