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
Generation, display, and manipulation of measurements in computer graphical designs
Electronic device, communication control method of electronic device, and information terminal device
Digital rights management for media streams
Information display
Electronic control apparatus
Alkaline battery
Bi-directional pattern dependent noise prediction
  Randomly Featured Patents
Method for testing electrical properties of silicon single crystal
Gerotor motor and brake assembly
Polarization beam separator and combiner
Treatment of arthritis and other similar conditions
6-Substituted 2-naphthyl acetic acid derivatives
Light-emitting diode
Write drive apparatus
Manganese oxide nanowires, films, and membranes and methods of making
Serial bus system and method for selection of bus subscribers
Method and system for assignment of numbers as addresses for stations on a switched network