Ohlandt, Greeley, Ruggiero & Perle
Drum head assembly
 An integral drum head assembly including a drum head frame, a skin adapted to be positioned about the frame, a mount for mounting the skin firmly to the frame, and a tensioning device for tensioning the skin. The skin tensioning device has a surface for pressing against the skin, and has an adjuster for moving the tensioning device surface relative to the frame. 
Latin Percussion, Inc.
G G
G10D G10D
inventional inventional
Richard D.
Simons