Patent · US Active

Exhaust-gastight decoupling element from stripwound hoses

US7571745B2 · kind B2 · utility

3Cited by

7References

13Claims

0Family size

Assignee

WESTFALIA METALLSCHLAUCHTECHNIK GMBH & CO. KG · DE

Inventors

Dietmar Baumhoff · Olpe, DE
Karl-Heinz Münker · Hilchenbach, DE
Frank Bender · Drolshagen, DE
Stefan Hauk · Hilchenbach, DE

Key dates

Filing date	May 27, 2005
Grant date	Aug 11, 2009
Priority date	—
Expiry date	Jul 24, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16L51/025
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

For connection of exhaust system pipe work, which is subject to vibration, a typical example of an application being in vehicle exhaust systems, a gas-tight decoupling element produced from stripwound hoses is used, which consists of two coaxially arranged, multi-layer stripwound metal hoses and axial edge elements. These elements form an annular cavity between the two stripwound hoses with a suitable pneumatic connection which is pressurized in the operating condition using ambient air or cleaned exhaust gas, the pressure being as high or higher than the dynamic pressure which is built up in the inside cylindrical exhaust system cavity as a result of exhaust gas flow.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.