Sound suppressing device for clean air tube

Details Sound suppressing device for clean air tube Sound suppressing device for clean air tube

1997-06-24

1999-10-05

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

55DIG30, 123198E, F02M 3500

Patent

active

059628200

ABSTRACT:
A modable acoustic tubular device is coupled internally in the clean air tube of a vehicle engine inlet assembly. The moldable acoustic tubular device is made of an acoustic absorbing material provided with controlled porosity or a set of acoustic materials having controlled porosity, superimposed and glued to each other. The tubular device has the shape thereof predetermined pursuant to the internal characteristics of the conventional clean air passage tube which is made of rubber or plastic and which interconnects the air filter and the carburetor of a vehicle engine. The tubular device absorbs sound waves caused by the inlet noises. The device is applied internally inside the inlet tube by gluing or other adhesion and may remain integral with the inside of the tube or be removable therefrom. The acoustic tubular device is capable of being applied partially or totally along the inside of the inlet tube, also with an end thereof extending or not beyond the limit of the tube in the latter's coupling with the nozzle of the air filter's clean air compartment.

REFERENCES:
patent: 4483413 (1984-11-01), Ohashi
patent: 4619344 (1986-10-01), Uesugi et al.
patent: 5548093 (1996-08-01), Sato et al.
patent: 5571242 (1996-11-01), Demorest
patent: 5649986 (1997-07-01), Mueller

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