Sheet metal tubular exhaust gas element deformed to provide elbow
United States Patent 3259149
US Patent References:
/1302300.html
- - 1302300

Muffler
- - 2047443

Device damping the disturbances propagated in fluid
- - 2096260

Expansion bend
- - 2157564

Rectangularly bent "square" tubing
- - 3081795


Inventors:
Curtis, Myron C.
Straw, Eldred G.
Publication Date:
07/05/1966
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Assignee:
WALKER MFG CO
Primary Class:
138/178
Other Classes:
138/44, 181/228, 72/307, 180/309, 285/183
International Classes:
F01N7/18; F16L43/00; F01N7/02; F01N7/00
US Patent References:
3104735Sound attenuating gas pipe
3133612Sound deadening laminated engine exhaust pipe