Patents by Inventor Emerson L. DeFord

Emerson L. DeFord 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).

  • Split E flute and split E mechanism therefor
    Patent number: 4353281
    Abstract: A split E mechanism for flutes having a split G key mechanism is achieved by attaching of a short arm to the F-sharp key in a manner so as to partially overlie an adjacent G-A combination key of the split G key mechanism. According to a preferred embodiment, the arm is soldered to the side of the free end of the F-sharp key at a position such that the adjacent G-A combination key will be closed when the F-sharp key is closed without the G-A combination key interfering with closing of the F-sharp key.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: October 12, 1982
    Assignee: Emerson Musical Instruments Inc.
    Inventor: Emerson L. DeFord