Patents by Inventor Darrell D. Hafford

Darrell D. Hafford 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: 6120341
    Abstract: A unique three sound chamber game call is presented, which creates a wide variety of game calls and sounds utilized in detecting the location of game. The game call has a first sound chamber or mouthpiece barrel in which a vibrating reed is located. The cylindrical portion of the reed carrier may connect the first mouthpiece barrel sound chamber to a second middle baffle sound chamber. The aperture of the second middle sound chamber reduces the exit area of the air blown over the reed and thus changes the pitch of the call. A trombone-like third baffle or sound chamber is placed over the end of the second sound chamber. The third sound chamber can be taken off completely, increasing the volume of the call or may slide up and down the outer end of the second sound chamber varying the tone, pitch and volume of the call.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: September 19, 2000
    Inventor: Darrell D. Hafford