Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1996-12-20
1998-03-24
Dang, Khanh
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181252, 181257, F16K 4702
Patent
active
057315574
ABSTRACT:
A fluid guiding element for blocking and damping noises propagating in it has a main passage composed of a flexible inner hose jacket which is resistant to mechanical, chemical or calloric load by a fluid to be guided through the fluid guiding element, an outer hose jacket, and a material insert arranged between the hose jackets and composed of a flexible material which is resistant at least to calloric loads, the main passage having a fluid inlet and a fluid outlet and being provided with at least one turn of substantially 360 between the fluid inlet and the fluid outlet, and at least one auxiliary passage arranged in a cross-section of the main passage and having sound-soft walls, the at least one auxiliary passage being composed of an inner hose jacket, an outer hose jacket and a material insert arranged between the inner and outer hose jackets, the auxiliary passage being provided with at least one turn of substantially 360.degree..
REFERENCES:
patent: 978287 (1910-12-01), Grewe
patent: 3113635 (1963-12-01), Allen et al.
patent: 3374856 (1968-03-01), Wirt
patent: 3842940 (1974-10-01), Bonikowski
patent: 5198625 (1993-03-01), Borla
Norres Albert
Norres Richard
Dang Khanh
Striker Michael J.
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