Patents by Inventor Douglas M. Conroy

Douglas M. Conroy 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).

  • Double pocket drum mute
    Patent number: 5581030
    Abstract: A double pocket drum mute having a structure which is made of three layers, namely an outer sheet (22), an inner sheet (24), and a padding sheet (20). The inner sheet exhibits a slot dividing the inner sheet into two parts. Each part of the inner sheet together with the padding sheet form a pocket. The slot allows to put an ingot into each pocket. The structure exhibits two holes disposed near edges running parallel to each other. A latchet string is threaded through the holes and tied. The double pocket drum mute is bound to the drum by the latchet string to mute the undesirable overtones.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: December 3, 1996
    Inventor: Douglas M. Conroy