Adjustable venturi for a drum

Details Adjustable venturi for a drum Adjustable venturi for a drum

2007-11-06

2007-11-06

Donovan, Lincoln (Department: 2837)

Music

Instruments

Drums

Reexamination Certificate

active

10993476

ABSTRACT:
A vent for a drum or drum head is provided. The vent includes a valve which is mounted on the side of the drum or drum head which can be adjusted between fully open and fully closed positions and may provide a range of settings between those two positions. A number of embodiments of adjustable throttle valve types that are applicable including but not limited to: globe valve, gate valve, ball valve, plug valve butterfly valve, diaphragm valve, check valve, one, two or three way valves, pinch valve, flap valve, needle valve or safety valve.

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