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
Synchronous rectifier network unit circuit and method
Millimeter wave imaging method and system to detect concealed objects
Electrical terminal
Transducer displacement protection
Reconfigurable barrel shifter and rotator
Vehicle battery with cell balancing current paths and method of charging the same
Method and system for prioritizing points of interest for display in a map using category score
  Randomly Featured Patents
Voltage control apparatus for electric generator of vehicle
Fungicidal mixtures
Portable electro-mechanical signal system
Loveseat
O-phenylenediamines containing fluoroalkyl(ene) groups
Urethane photosensitive resinous composition
Eyeglasses
Axial void fraction distribution measurement method and neutron multiplication factor evaluating method
Method and apparatus for accessing electronic data via a familiar printed medium
Aryloxy-alkyl-dialkylamines