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

1980-09-15

1982-06-08

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

138151, 138163, 29157R, F01N 718

Patent

active

043335454

ABSTRACT:
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.

REFERENCES:
patent: 2187431 (1940-01-01), Powell
patent: 2845889 (1958-08-01), Jones
patent: 2966226 (1960-12-01), Kalis
patent: 3064336 (1962-11-01), Powers et al.
patent: 3581842 (1971-06-01), Hall

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