Percussion musical instrument drum-head tensioning assembly...

Details Percussion musical instrument drum-head tensioning assembly... Percussion musical instrument drum-head tensioning assembly...

G - Physics

01

D

84/60

G01D 13/02 (2006.01) G10D 13/02 (2006.01)

Patent

CA 1264240

ABSTRACT PERCUSSION MUSICAL INSTRUMENT DRUM-HEAD SKIN TENSIONING ASSEMBLY AND DRUM SHELL CONSTRUCTION THEREFOR One of a pair of concentric ring hoops overlaps the other and holds the perimeter edge of a drum head vibratile element in tension between the mating overlapping faces of the hoops. The hoops are held together by a tensioning bolt threadable into a bracket connected to a lower hoop which has another skin stretched between a stepped inner annular grove on its inner face edge. A drum shell made of a composite of ridgid foam interior spaced apart by a pair of epoxy impregnated carbon fibresheets is held by the lower second drum skin into enclosing engagement on its upper perimeter edge with an inner stop flange and vertical wall face of the inner hoop ring of the drum head vibratile skin assembly.

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