Patents by Inventor Ronald R. Spercel

Ronald R. Spercel 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: 6444886
    Abstract: An improved musical instrument includes a plurality of strings which are connected string posts of tuning devices on a head portion of the musical instrument. The string posts of the tuning devices are disposed in a linear array on the head portion of the musical instrument. A linear edge of the head portion extends parallel to a plane containing the central axes of the string posts in the linear array. In addition, the head portion has a nonlinear edge with arcuate recesses. Actuators for some of the tuning devices are movable in the recesses along the nonlinear edge during manual rotation of the actuators. Actuators for some of the tuning devices are disposed along the linear edge. At least some of the actuators along the nonlinear edge are longer than actuators along the linear edge.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: September 3, 2002
    Inventors: Ronald R. Spercel, Robert J. Sperzel
  • Patent number: 5962797
    Abstract: An improved musical instrument includes a plurality of strings which are connected string posts of tuning devices on a head portion of the musical instrument. The string posts of the tuning devices are disposed in a linear array on the head portion of the musical instrument. A linear edge of the head portion extends parallel to a plane containing the central axes of the string posts in the linear array. In addition, the head portion has a nonlinear edge with arcuate recesses. Actuators for some of the tuning devices are movable in the recesses along the nonlinear edge during manual rotation of the actuators. Actuators for some of the tuning devices are disposed along the linear edge. At least some of the actuators along the nonlinear edge are longer than actuators along the linear edge.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: October 5, 1999
    Inventors: Ronald R. Spercel, Robert J. Sperzel