Plural chamber stamp formed muffler with single intermediate tub

Details Plural chamber stamp formed muffler with single intermediate tub Plural chamber stamp formed muffler with single intermediate tub

1988-08-03

1989-06-06

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181266, 181268, 181272, 181276, F01N 102, F01N 718

Patent

active

048363308

ABSTRACT:
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 internal plates such that at at least one location thereon a straight line extending entirely across said internal plates will intersect 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 separated 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 bulb. As a result, the crease is not provided with recesses that conceivably could retain corrosive materials.

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