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US 4,289,056 AGranted
Percussion kit
OwnerStephen F. Shierinventor
Life of this patent
Estimating the term…
Abstract
A collapsible drum, the drum having flexible side walls formed of a pair of generally parallel walls, the walls being adapted to be inflated to hold the drum in erected condition and deflated to allow the drum to collapse for transportation and storage.
Claims4
A percussion instrument having an upper playing surface supported by an upper ring, a lower ring, and a wall interconnecting said rings, characterized in that said wall comprises a flexible inflatable wall, and means to admit air to said inflatable wall to pressurize the wall for erection, and release said air for said wall to collapse to move said rings toward each other for transport and storage.
Dependencies are inferred from the claim text.