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US 4,356,886 AGranted
External housing for an exhaust muffler for internal combustion engines
AssigneeAlcan Aluminiumwerke GmbH
InventorsOtto Daude, Heinz Peckmann
Life of this patent
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Abstract
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, projecting from that end into the interior of the pipe section.
Claims6
An exhaust muffler for internal combustion engines, comprising:
- a thin-walled external housing;
- at least two connecting pieces respectively disposed at the opposite ends of said housing;
- and
- a gas-permeable inner pipe component within said housing extending rigidly between and fixed at its opposite ends to said connecting pieces;
- and wherein said housing comprises:
- at least one pipe section which has at one end a seamlessly merging bottom, and at least one of said connecting pieces likewise seamlessly starting therefrom, said one pipe section with said bottom and said one connecting piece being of a malleable aluminum alloy extrusion molded in one piece with a relatively thin wall, and being mounted on and supported by said inner pipe component.
3 more elements
Dependencies are inferred from the claim text.