Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2005-07-05
2005-07-05
Hsieh, Shih-Yung (Department: 2837)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S247000, C181S248000, C181S258000
Reexamination Certificate
active
06913112
ABSTRACT:
The present invention provides a noise attenuation assembly having at least one noise prevention pad disposed within an annular gap formed between a gas passage tube and an overlap tube. The noise prevention pad prevents the two tubes from coming in contact during thermal expansion of the tubes, and allows the tubes to contract without causing “tick and ping” noise, during a cool down.
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Arvin Technologies, Inc.
Carlson & Gaskey & Olds
Hsieh Shih-Yung
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