Title:
SOUND ARRESTER
Document Type and Number:
Japanese Patent JP2004060176
Kind Code:
A
Abstract:
To provide a miniaturizable sound arrester by further developing a thinking way for the sound arrester including acoustic pipes.
A plurality of outwardly opening acoustic pipes 3 and 21 to 28 are arranged outward along a wall surface or an upper part of walls 1 and 10 and the other structure, and sheets 4 and 40 are stretched over an opening of these acoustic pipes. Since a frequency band having a muffling effect shifts to the low frequency side by stretching the sheet 40, the length of the acoustic pipes can be shortened.
Inventors:
FUJIWARA KYOJI
TASHIRO MOTOJI
TASHIRO MOTOJI
Application Number:
JP2002216553A
Publication Date:
February 26, 2004
Filing Date:
July 25, 2002
Export Citation:
Assignee:
TOKYO SEIKO CO LTD
International Classes:
E01F8/00; G10K11/16; (IPC1-7): E01F8/00; G10K11/16
Attorney, Agent or Firm:
Kenji Ushiku
Tadashi Inoue
Takaaki Teiaki
Tadashi Inoue
Takaaki Teiaki