Resources Contact Us Home
Apparatus for and method of attenuating acoustic energy

Image Number 3 for United States Patent #6033756.

A sound attenuating element is provided which comprises a closed cell foam layer (2) having a plurality of channels (4) formed therein. The element is, in use, placed adjacent a surface such that an air gap is formed between the foam layer and the surface. The channels couple to the air gap to form a plurality of Helmholtz resonators.

  Recently Added Patents
Partial poly amorphization for channeling prevention
High NA catadioptric imaging optics for imaging A reticle to a pair of imaging locations
Vibration-type driving device
Duplex web printer system registration technique
Devices and methods for processing images using scale space
Method, combiner and system for transmitting signals
Semiconductor device
  Randomly Featured Patents
Dental flossing system
Scissors and grip
Commercial LED fixture with main reflector having a pair of oppositely disposed wall washes
Multi-range fiber-optic reflective displacement micrometer
Generic emulator of devices in a device communications protocol
Method for reticle inspection using aerial imaging
Optical switch and adjustment method thereof
Method of separating a suspension of activated sludge and sewage water
Dome sheet unit and membrane switch having the same