Title:
EMBOSSED SHELL FOR SPUN MUFFLERS
Document Type and Number:
WIPO Patent Application WO2004075623
Kind Code:
A3
Abstract:
An exhaust muffler with a single-wall shell having a first end and a second end features a plurality of embossments formed on the shell and extending from the first end of the muffler to the second end of the muffler. The embossments are arranged in a pattern such that any straight line extending from the first end to the second end intersects at least one of the embossments, thereby imparting increased stiffness to the muffler shell. Each of the embossments preferably have an elliptical shape and are arranged in rows extending substantially parallel to a longitudinal axis of the muffler. The embossments in any given row are rotated ninety degrees from the embossments in preceding and succeeding rows and are spaced to provide an interlocking pattern.
Inventors:
WARMENHOVEN JOHN LEWIS (US)
Application Number:
PCT/US2004/005386
Publication Date:
December 23, 2004
Filing Date:
February 23, 2004
Export Citation:
Assignee:
TENNECO AUTOMOTIVE OPERATING (US)
WARMENHOVEN JOHN LEWIS (US)
WARMENHOVEN JOHN LEWIS (US)
International Classes:
F01N1/02; F01N13/18; (IPC1-7): F01N7/08
Foreign References:
| US4941545A | 1990-07-17 | |||
| US2151084A | 1939-03-21 | |||
| USD180896S |
Other References:
See also references of EP 1597460A4
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