Patents by Inventor Patrick C. Townshend

Patrick C. Townshend 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).

  • Acoustic drums
    Patent number: 4184407
    Abstract: A musical drum has a hollow elongate body of resin impregnated glass fibre, open at both ends. A membrane is stretched across one end and secured thereto. The said end is circular and the body has a cylindrical portion including the said end and then has a flared portion with a curved central axis. The flared portion terminates in a generally oval opening and includes a hollow ridge. In use of the drum, two notes are produced, one at the center of the open end and the other, an octave lower, in the ridge.A bass drum incorporating the invention is also described.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: January 22, 1980
    Inventor: Patrick C. Townshend