Method for producing a device for muffling sound or...

Details Method for producing a device for muffling sound or... Method for producing a device for muffling sound or...

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 13/18 (2010.01) F01N 13/14 (2010.01) F01N 1/24 (2006.01) F01N 3/28 (2006.01) F01N 7/18 (2006.01) F01N 7/14 (2006.01)

Patent

CA 2072947

-17- Abstract The invention is directed to a method for producing a device forming a muffler 1 or a catalytic converter comprising a casing having an outer wall part 4 and an inner wall part 5. The two wall parts 4, 5 are connected with one another at least at the ends of the casing and are constructed in such a way that there is an intermediate space 16 between them at least in some places. This intermediate space 16 is produced in that a pressure is generated between the inner wall part 5 and the outer wall part 4 by a substance in order to bend one wall part 4, 5 away from the other wall part 4, 5 at least in some places.

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