Low noise hose

Details Low noise hose Low noise hose

1994-04-29

1996-08-20

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

138121, E04F 1704

Patent

active

055480934

ABSTRACT:
A low noise hose including a hollow cylindrical sound absorption member made of soft foam material, a synthetic resin net and/or a spiral wire therein, and a sound insulation tube that is made of soft rubber and has a bellow-like shape disposed about the sound absorption member. The sound insulation tube intercepts the hose internal noise, and it is thicker than a conventional hose so that it is resilient to heat, oil or gas. The sound insulation tube has a bellow-like shape so that it shrinks following the pulsation of intake air, and absorbs it.

REFERENCES:
patent: 3903928 (1975-09-01), Sykes et al.
patent: 4315558 (1982-02-01), Katayama
patent: 4993513 (1991-02-01), Inoue et al.
patent: 5092122 (1992-03-01), Bainbridge

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