Patents by Inventor Michael J. Downing

Michael J. Downing 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: 6417432
    Abstract: A musical drum 40 which utilizes a principle of physics to achieve an unequal tensioning of the upper head 20 and the lower head 36 without the need of physical attachments or piercing of the drum shell 24. The shell of the drum 24 remains suspended by shell's bearing edge 26, in contact only with the upper and lower heads 20 and 36 respectively. This allows the shell 24 of the drum to resonate freely and unencumbered by any attachments of hardware.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: July 9, 2002
    Inventor: Michael J. Downing