Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Sound absorbing body, sound absorbing structural body, and method of manufacturing these bodies










Image Number 4 for United States Patent #7364014.

A sound absorbing body 40 has a molded body 44 including two unexpanded layers 41, 42 and an expanded layer 43 having a number of voids and held between these unexpanded layers 41, 42, a plurality of holes 41A of a depth that passes through the unexpanded layer 41 and does not reach the other unexpanded layer 42 are formed at any positions on the molded body 44, a cross-sectional area of the hole 41A is in the range from 0.785 to 314 mm.sup.2, and the pitch is 1 mm or larger. Laminating a plurality of materials is not required, and both the sound absorbing capability and sound insulating capability can be secured by integral molding, and further, only unpleasant sounds can selectively be absorbed.








 
 
  Recently Added Patents
Proximity search methods using tiles to represent geographical zones
Pointing device, display apparatus and pointing system, and location data generation method and display method using the same
Horizontal aggregations in a relational database management system
Semiconductor device and method for manufacturing the same
Combined high and low frequency stimulation therapy
Polarization preserving front projection screen microstructures
Manufacturing method for semiconductor device carrier and semiconductor package using the same
  Randomly Featured Patents
Objective lens
Slurry supplying device in a wet blasting system
Method and apparatus for measurement of jitter
Fuel feeding device for an internal combustion engine
Nonvolatile semiconductor memory and read method
Torchiere tree lamp
Method and apparatus for reducing quantization error in laser gyro test data through high speed filtering
Control of fluid carrier resistance and water concentration in an aquatron charging device
Cooking roaster
Compositions of Br or Cl containing polymers and polycarbodiimides