Patents by Inventor John G. Backus

John G. Backus 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: 4337683
    Abstract: A synthetic woodwind reed for use in woodwind instruments such as clarinets, oboes and bassoons. The reed is formed from a plurality of spaced longitudinal ribs fabricated of a graphite reinforced epoxy resin having a high modulus of elasticity and a low density. The spaces between the ribs are filled with a low density binder material such as a suitable epoxy resin preferably filled with small hollow plastic spheres, such as microballoons. A plastic film of a material such as Mylar is cemented to one or both sides of the reed to strengthen the structure. The width of the ribs, particularly at the tip portions thereof, and the number of ribs employed are chosen so that the finally formed and assembled reed has the proper modulus of elasticity and the proper density to provide an optimum natural vibration frequency for the reed, which should be 2000 Hz or higher.
    Type: Grant
    Filed: July 22, 1980
    Date of Patent: July 6, 1982
    Inventor: John G. Backus