Title:
NOISE SUPPRESSING DEVICE
Document Type and Number:
Japanese Patent JPH04246220
Kind Code:
A
Abstract:
PURPOSE:To obtain a noise suppressing device which can extend noise eliminating frequency area, simplify construction, miniaturize, and reduce cost. CONSTITUTION:A noise suppressing device of resonance type is provided with a resonant noise suppressing chamber 4 which is connected to an air hose 3 through a connecting hole 5. The resonant noise suppressing chamber 4 is divided into at least two chambers 41 and 42, and a partition film 6 which varies the volume of the chambers 41 and 42 by extending it to either one of the chambers due to a pressure difference between the chambers 41 and 42 is provided.
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Inventors:
FUJIWARA KAZUO
SATO JUNICHI
NAKAI AKEMI
SATO JUNICHI
NAKAI AKEMI
Application Number:
JP3233891A
Publication Date:
September 02, 1992
Filing Date:
January 31, 1991
Export Citation:
Assignee:
TOYODA GOSEI KK
International Classes:
F01N1/02; F02M35/12; (IPC1-7): F01N1/02; F02M35/12
Attorney, Agent or Firm:
Matsubara etc.