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
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Radio communication system, base station device and mobile station device utilizing an intermittent reception
Evolutionary clustering algorithm
Method for detecting motion of an electrical device or apparatus
SONOS stack with split nitride memory layer
Lubricating oil with enhanced protection against wear and corrosion
  Randomly Featured Patents
Methods and combinations for sealing corked bottles
Structure for electrical connections and panel assembly
Yarn finish applicator with internal finish heating capability
Retaining device for a wheel alignment analyzer
Tick repellant carcass bag kit
Lockable key with luminescent display for office typewriters and teleprinters
High-power multi-device liquid cooling
Method, system and computer program product for controlling the graphical display of multi-field text string objects
Low voltage differential signal transmitting circuit and optical disc recording apparatus
Icon for a portion of a display screen