Patents by Inventor Robert R. Worthing

Robert R. Worthing 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: 4151778
    Abstract: A string tensioning device for use on stringed musical instruments such as violins, guitars, and cellos. More particularly, a device capable of adjusting the tension on the strings of musical instruments at two different ratios while the device is in place on the musical instrument. Said device having as one of its components a worm screw, said screw being easily interchangeable with another similar screw with different spacings of the threads on the screw so as to give the user any desired tension adjusting ration.
    Type: Grant
    Filed: April 4, 1978
    Date of Patent: May 1, 1979
    Inventors: Lawrence E. Beattie, Robert R. Worthing