Patents by Inventor David M. Spinazzola

David M. Spinazzola 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).

  • Drumhead tightening and tuning apparatus
    Patent number: 7138574
    Abstract: An apparatus for tightening a drumhead having a rim and a skin set on a drum body portion. The apparatus utilizes an annular member having a track. A fastener is also employed for holding the annular member relative to the drum body. A retainer is provided and includes a surface for engaging the rim of the drumhead with at least one projection which engages the track of the annular member. The retainer is capable of rotating to move the projection along the track to loosen or tighten the skin of the drumhead through contact with the drum body.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: November 21, 2006
    Inventor: David M. Spinazzola