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US 2004/0163253 A1Published application
Manufacturing method of a muffler assembly
OwnerI-Long Wu, Chia-Tien Wuinventors
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Abstract
A manufacturing method includes the steps as follow. Step 1: A pipe is cut to a length slightly longer than that of a muffling device. Step 2: The pipe has a lower end that is forged and formed as an exhaust pipe. Step 3: A muffling device that is wound as a spiral and received in a middle portion of the pipe. Step 4: The pipe has an upper end that is forged and formed as an inlet pipe. Step 5: The inlet pipe and the exhaust pipe are forged again to hold the muffling device in place in the middle portion of the pipe.
Claims11
A manufacturing method of a muffler assembly comprising the following steps:
- step 1:
- a cylinder cut to a length slightly longer than that of a muffling device;
- step 2:
- the cylinder having a lower end that forged and formed as an exhaust pipe;
- step 3:
- a muffling device that is wound as a spiral and received in a middle portion of the cylinder;
- step 4:
- the cylinder having an upper end that is forged and formed as an inlet pipe;
- and
- step 5:
- the inlet pipe and the exhaust pipe being forged again to hold the muffling device in place in the middle portion of the cylinder.
8 more elements
Dependencies are inferred from the claim text.