Patent Number: 6,253,873

Title: Gas guide element with sound-absorbent walls for blocking and damping noise spreading from it into main conduits

Abstract: A gas guide element with sound absorbent walls for blocking or damping noise spreading into main conduits, the gas guide element comprising a guide element body including a flexible sound absorbent inner hose resistant to mechanical, chemical and caloric load exerted by a gas to be guided; an outer hose; and a soft and flexible sound absorbent intermediate layer of material disposed between said sound absorbent inner and outer hose, said inner hose being composed of a flexible material and having an outer side provided with weighted metal elements, said sound absorbent intermediate layer being composed of a randomly oriented pile of materials, and said guide element body having a gas inlet and a gas outlet and at least one convolution between said gas inlet and said gas outlet.

Inventors: Norres; Richard (D-45896 Gelsenkirchen, DE), Norres; Albert (D-45896 Gelsenkirchen, DE)


International Classification: F16L 59/00 (20060101); F16L 59/153 (20060101); F16L 9/00 (20060101); F16L 9/21 (20060101); E04F 017/04 (); F01N 001/12 ()

Expiration Date: 07/03/2018