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US 2014/0231167 A1Published application
Muffler
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMitsuru Hiramatsu, Wataru Mizutani
Life of this patent
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Abstract
A muffler having a shell of a double-layer structure includes an inner shell that is formed by fixing ends of a tubularly rolled plate material to each other through a lock seam, and an outer shell that is formed substantially in the same manner as the inner shell. In this muffler, a through-hole is provided through the inner shell at a position where the inner shell overlaps with a lock seam portion of the outer shell.
Claims3
A muffler having a shell of a double-layer structure, comprising:
- an inner shell formed by fixing ends of a tubularly rolled plate material to each other through a lock seam;
- and
- an outer shell formed substantially in a same manner as the inner shell,
- the inner shell including a through-hole at a position where the inner shell overlaps with a lock seam portion of the outer shell.
1 more element
Dependencies are inferred from the claim text.