External housing for an exhaust muffler for internal combustion engines

Abstract From the Canadian patent

Abstract of the Disclosure An external housing for an exhaust muffler comprising at least one pipe section having one seamlessly converging end and at least one connecting piece seamlessly extending from the converging end, produced as a one-piece extrusion molded body of a malleable aluminum alloy The housing may include a second pipe section joined undetachably to the first in alignment therewith. A seating part, e.g. a pipe socket may be formed, integrally with the converging end of the pipe section project-, ing from that end into the interior of the pipe section.