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
Method of requesting CQI reports
PC secure video path
Computer device with digitizer calibration system and method
Optoelectronic component and method for producing an optoelectronic component
Ice data collection system
Modified and stabilized GDF propeptides and uses thereof
Radio communication system, base station apparatus, terminal apparatus, and radio communication method for radio communication system
  Randomly Featured Patents
Use of drug combinations for treating insulin resistance
Optical disk apparatus operative with optimal recording power setting
Aqueous treatment process and bath for aluminiferous surfaces
Video signal processing systems
Method and device for optimising the adjustment time of an adjustable filter
Compressor valve arrangement
Method and apparatus for achieving thermal stability in a press
Container and foldable blank for forming the container itself
Golf club holder
Method and system for exposing a photoresist in a magnetic device