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US 5,414,775 AGranted
Noise attenuation system for vibratory feeder bowl
AssigneeNoise Cancellation Technologies, Inc.
InventorsKelvin Scribner, Doug Hodgson
Life of this patent
Estimating the term…
Abstract
Active system for both attenuating mechanical vibration and the noise occasioned by the operation of vibratory feeder bowls in manufacturing having accelerometer (20) adjacent feeder bowl (21) and an inertial actuator (57) and a controller (59) to control both disturbances.
Claims17
A system for attenuation of tonal noise in a vibratory feeder bowl mounted atop a support means, said system comprising
- a noise attenuation system means associated with said vibratory feeder bowl for canceling acoustic noise emanating from said bowl during operation,
- a vibration attenuation system means associated with said support means and for reducing vibration on said support means to attenuate tonal noise caused by mechanical vibration of said support means during bowl operation, and
- control means for sensing said acoustic noise and mechanical vibration and to provide signals to said noise attenuation and vibration attenuation means to effect operation thereof.
Dependencies are inferred from the claim text.