Back-fire resistant lock seam for muffler shells

Details Back-fire resistant lock seam for muffler shells Back-fire resistant lock seam for muffler shells

F - Mech Eng,Light,Heat,Weapons

01

N

113/1, 26/151, 1

F01N 13/18 (2010.01) B21D 39/02 (2006.01)

Patent

CA 1181351

BACK-FIRE RESISTANT LOCK SEAM FOR MUFFLER SHELLS ABSTRACT OF THE DISCLOSURE A muffler wherein the shell comprises a metal sheet the ends of which are retained together in an interlocked joint has a shielding strip on the interior of the tube secured thereto in overlapping relation to the interlock. Preferably the sheet is a two ply, one end of the inner ply being retained in the joint, the other end forming the shielding strip, the edge of which is spot welded to the interior surface of the shell. The muffler is resistant to damage from back-fires.

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