Multi-layer tube of a muffler for an internal combustion engine

Details Multi-layer tube of a muffler for an internal combustion engine Multi-layer tube of a muffler for an internal combustion engine

1988-06-13

1989-07-25

McDowell, Robert

Stock material or miscellaneous articles

All metal or with adjacent metals

Workpiece with longitudinal passageway or stopweld material

138142, 138149, 138151, 138163, 138171, 181222, 181227, 181244, 181252, 428594, 428653, 428659, 428683, 428685, B32B 1518

Patent

active

048512982

ABSTRACT:
A tube of a muffler for an internal combustion engine includes at least two generally rectangular sheets which are joined together at one end by crimping and wound in a tubular configuration to constitute two consecutive layers. In the tubular configuration, the other end of each of the two sheets overlaps the sheet itself and welded to the latter straddling a coupling portion where the two sheets are joined. While one of the sheets which constitutes an inner layer of the tube is made of a material which is resistive to corrosion due to chemical reactions with combustion gas and others flowing through the tube, the other which constitutes an outer wall of the same is made of a material which withstands adverse ambient conditions such as briny air and high humidity.

REFERENCES:
patent: 2966226 (1960-12-01), Kalis
patent: 3337939 (1967-08-01), Parkinson
patent: 4010886 (1977-03-01), Santos
patent: 4333545 (1982-06-01), Roberts
patent: 4413657 (1983-11-01), Sasaki et al.
patent: 4428420 (1984-01-01), Blakely

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