Title:
SOUNDPROOF PANEL
Document Type and Number:
WIPO Patent Application WO/2007/040265
Kind Code:
A1
Abstract:
A soundproof panel capable of exhibiting excellent sound absorbing performance
in a wide frequency band and facilitating recycling of a sound absorbing material.
The soundproof panel (2) is formed by receiving the sound absorbing material
in a case (2a), and the case (2a) has a rectangular frame section, a rear plate (2c)
attached to one side of the frame section, and a detachable front plate (2d) for
covering the opening on the other side of the frame section and having sound wave
passages allowing a sound wave to pass therethrough. The sound absorbing material
is formed by alternately layering longitudinally corrugated thin aluminum
sheets (2e) and laterally corrugated thin aluminum sheets (2f) over each other.
The longitudinally corrugated thin aluminum sheets (2e) have corrugations
oriented to extend in one direction of the case (2a) and have a large number of through
holes. The laterally corrugated thin aluminum sheets (2f) have corrugations
oriented to extend in the other direction perpendicular to the direction of the
corrugations formed in the longitudinally corrugated thin aluminum sheets
(2e) and also have a large number of fine through holes.
Inventors:
HATAYAMA TADASHI (JP)
YAMAGUCHI ZENZO (JP)
YAMAGIWA ICHIRO (JP)
TANAKA TOSHIMITSU (JP)
TSUBOTA KENSUKE (JP)
YAMAGUCHI ZENZO (JP)
YAMAGIWA ICHIRO (JP)
TANAKA TOSHIMITSU (JP)
TSUBOTA KENSUKE (JP)
Application Number:
PCT/JP2006/319974
Publication Date:
April 12, 2007
Filing Date:
October 05, 2006
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
HATAYAMA TADASHI (JP)
YAMAGUCHI ZENZO (JP)
YAMAGIWA ICHIRO (JP)
TANAKA TOSHIMITSU (JP)
TSUBOTA KENSUKE (JP)
HATAYAMA TADASHI (JP)
YAMAGUCHI ZENZO (JP)
YAMAGIWA ICHIRO (JP)
TANAKA TOSHIMITSU (JP)
TSUBOTA KENSUKE (JP)
International Classes:
G10K11/16; B32B3/28; E01F8/00; G10K11/172
Domestic Patent References:
| WO2004099646A2 | 2004-11-18 | |||
| WO2003001501A1 | 2003-01-03 | |||
| WO2005106840A1 | 2005-11-10 |
Foreign References:
| JP2004184667A | 2004-07-02 | |||
| JPH10219868A | 1998-08-18 | |||
| JP2004359114A | 2004-12-24 | |||
| JPH0218133A | 1990-01-22 | |||
| JPS52132402U | 1977-10-07 | |||
| JP2004062074A | 2004-02-26 | |||
| JPS524615A | 1977-01-13 |
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (2-2 Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka, JP)
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