F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
172/30
F01N 13/18 (2010.01) F01N 1/02 (2006.01) F01N 1/08 (2006.01)
Patent
CA 1302899
ABSTRACT OF THE DISCLOSURE A stamp formed muffler comprising a pair of internal plates and a pair of external shells is provided. The internal plates are stamp formed to define first and second spaced apart arrays of tubes and a single intermediate tube therebetween. Tubes in one array may have perforations or apertures to permit expansion of exhaust gases, while the other array may define at least one tuning tube. The tubes are disposed on the inter- nal plates such that at at least one location thereon a straight line extending entirely across said internal plates will inter- sect only the one intermediate tube. The external shells are stamp formed to define a plurality of chambers which cooperate with the tubes in the internal plates. The chambers are sepa- rated from one another by a crease disposed to align with the intermediate tube. The crease is characterized by a single outwardly convex portion to engage the single tube. As a result, the crease is not provided with recesses that conceiva- bly could retain corrosive materials.
581389
Harwood Jon W.
Kimmet Mark S.
Ap Parts Manufacturing Company
Moffat & Co.
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