Plastic muffler and method for making same

Details Plastic muffler and method for making same Plastic muffler and method for making same

2010-10-13

2011-11-01

Enad, Elvin G (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S228000, C181S265000, C181S282000, C138S113000

Reexamination Certificate

active

08047328

ABSTRACT:
A muffler adapted for connection with an exhaust pipe of an internal combustion engine which has an outer housing constructed of a plastic material. The housing has an inlet and at least one inwardly protruding rib extends around the interior of the housing inlet. The rib is constructed of a plastic material and forms an opening complementary in shape, but smaller in cross-sectional area, than the outer periphery of the exhaust pipe. The exhaust pipe is inserted into the inlet and the exhaust pipe and housing are vibrated relative to each other for a time period sufficient to at least partially melt the rib and cause the rib to seal around the exhaust pipe upon cooling.

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