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
Door-activated entry light fixture
Flexure with insulating layer isolating a portion of a metal substrate
Pattern identification apparatus, control method and program thereof
Monitoring heap in real-time by a mobile agent to assess performance of virtual machine
Adaptive analog echo/next cancellation
Apparatus for counting particles in a gas
Vacuum cleaner filter adapter ring
  Randomly Featured Patents
Low voltage differential swing interconnect buffer circuit
Tool setting apparatus
Venting device for mold
Process for the preparation of perylene
Pyridyl substituted spirodienes for the treatment of inflammation
Razor blade unit
Dry etching apparatus for rectangular substrate comprising plasma bar generation means
Ink reservoir element for use in a marking instrument, and method and apparatus for producing same
Fluid spray system having a replaceable cartridge
Sailboat wing spar structure