Title:
SILENCER
Document Type and Number:
WIPO Patent Application WO/1999/061762
Kind Code:
A1
Abstract:
A silencer, wherein a plurality of dot-shaped projected parts (15) and dot-shaped recessed parts (16) are provided on at least one of an inner plate and an outer plate so as to reduce the emission noise of high frequency components which is offensive to the ears as the emission noise from a vehicle in order to moderate the uncomfortableness caused by the emission noise, the projected parts (15) and recessed parts (16) are disposed alternately to each other so that they are surrounded by each other, and the projected parts (15) and recessed parts (16) are connected on their curved surfaces.
Inventors:
YOKOI MASAYUKI (JP)
MAENO MASAHIRO (JP)
TANGE MASAYOSHI (JP)
MAENO MASAHIRO (JP)
TANGE MASAYOSHI (JP)
Application Number:
PCT/JP1999/002771
Publication Date:
December 02, 1999
Filing Date:
May 26, 1999
Export Citation:
Assignee:
SANGO CO LTD (JP)
YOKOI MASAYUKI (JP)
MAENO MASAHIRO (JP)
TANGE MASAYOSHI (JP)
YOKOI MASAYUKI (JP)
MAENO MASAHIRO (JP)
TANGE MASAYOSHI (JP)
International Classes:
F01N1/02; F01N1/08; (IPC1-7): F01N1/08
Foreign References:
| JPH0240914U | 1990-03-20 | |||
| JPH04314913A | 1992-11-06 | |||
| JPS6279918U | 1987-05-22 |
Other References:
See also references of EP 1088968A4
Attorney, Agent or Firm:
Asamura, Kiyoshi (Ohtemachi 2-chome Chiyoda-ku Tokyo, JP)
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