Noise attenuating drying apparatus for motor vehicles

Drying and gas or vapor contact with solids – Apparatus – Houses – kilns – and containers

Reexamination Certificate

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Reexamination Certificate

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07028416

ABSTRACT:
An air duct for a motor vehicle air dryer has an outer shell defining an inner surface. A porous, fluid permeable lining for attenuating noise caused by turbulent air flow through the air duct is positioned on the shell inner surface, and defines an inner surface. The lining is retained in place by a relatively rigid expanded mesh adjacent the inner surface of the lining. The interior lining and mesh is preferably removable from the outer shell, but may be permanently mounted therein.

REFERENCES:
patent: 2770496 (1956-11-01), Wilson
patent: 3918171 (1975-11-01), Hull
patent: 4919245 (1990-04-01), Braden
patent: 4947958 (1990-08-01), Snyder
patent: 6192604 (2001-02-01), Morrison
patent: 6672424 (2004-01-01), Gadefait et al.
patent: 6857502 (2005-02-01), Naito

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